Entity Central Index Key Represents the fees and commission. Non-interest income within the scope of other GAAP topics. Equity securities, FV-NI, gross unrealized gain before tax. Equity securities, FV-NI, gross unrealized loss before tax. This element represents amount of unrecognized gain before loss on investment. This element represents amount of unrecognized loss before gain on investment. This element represents fair value of investment. This item represents the aggregate fair value of investments in debt and equity securities categorized as securities that have been in a continuous unrealized loss position for less than twelve months. This item represents the aggregate fair value of investments in debt and equity securities categorized as securities that have been in a continuous unrealized loss position for twelve months or longer. Amount of accumulated pre-tax unrealized loss on investments in securities that have been in a loss position for less than twelve months impacting investments. Amount of accumulated pre-tax unrealized loss on investments in securities that have been in a loss position for twelve months or longer impacting investments. Equity securities, FV-NI maturities after ten years amortized cost. Derivative liability fair value amount offset. Represents as other comprehensive income loss accretion of unrealized holding losses on securities transferred from available for sale to held to maturity net of tax. Amount of tax expense (benefit) allocated to other comprehensive income (loss). Total Deposits before Certificate accounts Cover [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Document Type Document Type Document Period End Date Document Period End Date Amendment Flag Amendment Flag Current Fiscal Year End Date Current Fiscal Year End Date Entity Filer Category Entity Filer Category Entity Common Stock, Shares Outstanding Entity Common Stock Shares Outstanding Document Fiscal Period Focus Document Fiscal Period Focus Document Fiscal Year Focus Document Fiscal Year Focus Entity Small Business Entity Small Business Entity Emerging Growth Company Entity Emerging Growth Company Entity Current Reporting Status Entity Current Reporting Status Entity Interactive Data Current Entity Interactive Data Current Entity Shell Company Entity Shell Company Entity Incorporation, State or Country Code Entity Incorporation State Country Code Entity File Number Entity File Number Entity Tax Identification Number Entity Tax Identification Number Entity Address, Address Line One Entity Address Address Line1 Entity Address, City or Town Entity Address City Or Town Entity Address, State or Province Entity Address State Or Province Entity Address, Postal Zip Code Entity Address Postal Zip Code City Area Code City Area Code Local Phone Number Local Phone Number Document Quarterly Report Document Quarterly Report Document Transition Report Document Transition Report Title of each class Security12b Title Trading Symbol(s) Trading Symbol Name of each exchange on which registered Security Exchange Name Statement Of Financial Position [Abstract] ASSETS Assets [Abstract] Cash and due from depository institutions Cash And Due From Banks Interest bearing deposits in depository institutions Interest Bearing Deposits In Banks Cash and Cash Equivalents Cash And Cash Equivalents At Carrying Value Investment securities available for sale, at fair value (amortized cost of $32,704 and $18,522, respectively) Available For Sale Securities Debt Securities Investment securities held to maturity (fair value of $16,507 and $22,609, respectively) Held To Maturity Securities Other investments Equity Securities Fv Ni Restricted stock, at cost Federal Home Loan Bank Stock Loans receivable, net of allowance for loan losses of $11,067 and $10,095, respectively Loans And Leases Receivable Net Reported Amount Other real estate owned Other Real Estate Accrued interest receivable Interest Receivable Operating lease right-of-use assets Operating Lease Right Of Use Asset Property and equipment, net Property Plant And Equipment Net Deferred income taxes Deferred Income Tax Assets Net Bank-owned life insurance Bank Owned Life Insurance Other assets Other Assets Total Assets Assets LIABILITIES AND SHAREHOLDERS’ EQUITY Liabilities And Stockholders Equity [Abstract] Liabilities Liabilities [Abstract] Deposits: Deposits [Abstract] Deposits-non-interest-bearing Noninterest Bearing Deposit Liabilities Domestic Deposits-interest-bearing Interest Bearing Deposit Liabilities Domestic Total Deposits Deposits FHLB advances Federal Home Loan Bank Advances Long Term Subordinated debt Subordinated Debt Advances from borrowers for taxes and insurance Advance Payments By Borrowers For Taxes And Insurance Accrued interest payable Interest Payable Current And Noncurrent Operating lease liabilities Operating Lease Liability Other liabilities Other Liabilities Total Liabilities Liabilities Commitments and Contingencies Commitments And Contingencies Shareholders’ Equity Stockholders Equity [Abstract] Preferred stock, $0.01 par value, 10,000,000 shares authorized, none issued Preferred Stock Value Common stock, $0.01 par value, 50,000,000 shares authorized; 7,804,469 and 7,609,953 shares issued and outstanding, respectively, at June 30, 2020 and 7,782,258 and 7,765,395 shares issued and outstanding, respectively, at September 30, 2019 Common Stock Value Additional paid-in-capital Additional Paid In Capital Common Stock Retained earnings Retained Earnings Accumulated Deficit Unearned Employee Stock Ownership Plan (ESOP) shares Unearned E S O P Shares Accumulated other comprehensive loss Accumulated Other Comprehensive Income Loss Net Of Tax Treasury stock, at cost: 194,516 shares and 16,863 shares at June 30, 2020 and September 30, 2019, respectively Treasury Stock Value Total Shareholders’ Equity Stockholders Equity Total Liabilities and Shareholders’ Equity Liabilities And Stockholders Equity Investment securities available for sale, amortized cost Available For Sale Debt Securities Amortized Cost Basis Investment securities held to maturity, fair value Held To Maturity Securities Fair Value Allowance for loan losses Loans And Leases Receivable Allowance Preferred stock, par value (in dollars per share) Preferred Stock Par Or Stated Value Per Share Preferred stock, authorized Preferred Stock Shares Authorized Preferred stock, shares issued Preferred Stock Shares Issued Common stock, par value (in dollars per share) Common Stock Par Or Stated Value Per Share Common stock, authorized Common Stock Shares Authorized Common stock, issued Common Stock Shares Issued Common stock, outstanding Common Stock Shares Outstanding Treasury stock, shares Treasury Stock Shares Interest expense subordinated debt. Federal deposit insurance corporation premiums (recovery). Other real estate income expense. Shares tax expense. Income Statement [Abstract] Interest and Dividend Income Interest And Dividend Income Operating [Abstract] Loans, including fees Interest And Fee Income Loans And Leases Investment securities, taxable Interest Income Securities Taxable Investment securities, tax-exempt Interest Income Securities Tax Exempt Dividends, restricted stock Dividend Income Operating Interest-bearing cash accounts Interest Income Deposits With Financial Institutions Total Interest and Dividend Income Interest And Dividend Income Operating Interest Expense Interest Expense [Abstract] Deposits Interest Expense Deposits Short-term borrowings Interest Expense Short Term Borrowings Long-term borrowings Interest Expense Long Term Debt Subordinated debt Interest Expense Subordinated Debt Total Interest Expense Interest Expense Net Interest Income Interest Income Expense Net Provision for Loan Losses Provision For Loan And Lease Losses Net Interest Income after Provision for Loan losses Interest Income Expense After Provision For Loan Loss Other Income Noninterest Income [Abstract] Service charges and other fees Fees And Commissions Depositor Accounts1 Rental income Rental Income Nonoperating Net gains on sale and call of investments Debt Securities Available For Sale Realized Gain Loss Net gains on sale of loans Gain Loss On Sales Of Loans Net Earnings on bank-owned life insurance Bank Owned Life Insurance Income Total Other Income Noninterest Income Other Expenses Noninterest Expense [Abstract] Salaries and employee benefits Labor And Related Expense Occupancy expense Occupancy Net Federal deposit insurance premium Federal Deposit Insurance Corporation Premiums Recovery Advertising Advertising Expense Data processing Information Technology And Data Processing Professional fees Professional Fees Other real estate owned expense, net Other Real Estate Income Expense Pennsylvania shares tax Shares Tax Expense Other operating expenses Other Noninterest Expense Total Other Expenses Noninterest Expense Income before income tax expense Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest Income tax expense Income Tax Expense Benefit Net Income Net Income Loss Earnings Per Common Share: Earnings Per Share Basic And Diluted [Abstract] Basic Earnings Per Share Basic Diluted Earnings Per Share Diluted Weighted Average Common Shares Outstanding: Earnings Per Share Basic And Diluted Other Disclosures [Abstract] Basic Weighted Average Number Of Shares Outstanding Basic Diluted Weighted Average Number Of Diluted Shares Outstanding Represents as a amortization of unrealized holding losses on securities available-for-sale transferred to held-to-maturity. Amount of tax expense (benefit) related to accretion of unrealized holding losses on securities transferred from available for sale to held to maturity. Statement Of Income And Comprehensive Income [Abstract] Net Income Other Comprehensive Income (Loss), Net of Tax: Other Comprehensive Income Loss Before Tax Period Increase Decrease [Abstract] Unrealized holding (losses) gains on available-for-sale securities Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax Tax effect Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax Net of tax amount Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax Reclassification adjustment for net gains arising during the period Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Before Tax Tax effect Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Tax Net of tax amount Other Comprehensive Income Loss Reclassification Adjustment From A O C I For Sale Of Securities Net Of Tax Adjustment for loss recorded on replacement of derivative Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments Tax Amortization of unrealized holding losses on securities transferred from available-for-sale to held-to-maturity Other Comprehensive Income Loss Accretion Of Unrealized Holding Losses On Securities Transferred From Available For Sale To Held To Maturity Before Tax Tax effect Other Comprehensive Income Loss Accretion Of Unrealized Holding Losses On Securities Transferred From Available For Sale To Held To Maturity Tax Net of tax amount Other Comprehensive Income Loss Accretion Of Unrealized Holding Losses On Securities Transferred From Available For Sale To Held To Maturity Net Of Tax Fair value adjustments on derivatives Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax Tax effect Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax Net of tax amount Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax Total other comprehensive loss Other Comprehensive Income Loss Net Of Tax Total comprehensive income Comprehensive Income Net Of Tax Statement Of Stockholders Equity [Abstract] Statement [Table] Statement [Table] Equity Components Statement Equity Components [Axis] Equity Component Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid-in Capital [Member] Additional Paid In Capital [Member] Retained Earnings [Member] Retained Earnings [Member] Represents the unearned ESOP shares. Unearned ESOP Shares [Member] Unearned E S O P Shares [Member] Accumulated Other Comprehensive Income (Loss) [Member] Accumulated Other Comprehensive Income [Member] Treasury Stock [Member] Treasury Stock [Member] Statement [Line Items] Statement [Line Items] Balance at beginning Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase Decrease In Stockholders Equity Roll Forward Net Income Other comprehensive loss Treasury stock activity Treasury Stock Value Acquired Cost Method Stock issuance (net of issuance of proceeds of $25,000) Stock Issued During Period Value New Issues Committed to be released ESOP shares Amortization Of E S O P Award Stock based compensation Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value Balance at ending Proceeds from net of issuance cost Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Committed to be released ESOP shares Employee Stock Ownership Plan E S O P Shares Contributed To E S O P Amortization of unearned esop award. Represents amount associated with loan origination (the process when securing a mortgage for a piece of real property) or lease origination. Increase decrease in operating lease liability payments. Amount of amortization expense attributable to subordinated debt. The net cash inflow or outflow for the increase (decrease) associated with restricted stock. Right of Operating lease liability. Impact of ASC 842 adoption Statement Of Cash Flows [Abstract] Cash Flows from Operating Activities Net Cash Provided By Used In Operating Activities [Abstract] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities [Abstract] Depreciation expense Depreciation Deferred income tax benefit Deferred Income Tax Expense Benefit ESOP expense Amortization Of Unearned E S O P Award Stock based compensation Share Based Compensation Amortization of premiums and discounts on investments securities, net Accretion Amortization Of Discounts And Premiums Investments Amortization (accretion) of loan origination fees and costs Amortization Of Deferred Loan Origination Fees Net Amortization of mortgage servicing rights Amortization Of Mortgage Servicing Rights M S Rs Net gain on sale and call of investments securities available-for-sale Net loss on sale of fixed assets Gain Loss On Disposition Of Assets1 Net gain on sale of secondary market loans Gain Loss On Sale Of Mortgage Loans Proceeds from sale of secondary market loans Proceeds From Sale Of Mortgage Loans Held For Sale Originations of secondary market loans Originations Of Secondary Market Loans Earnings on bank-owned life insurance Increase in accrued interest receivable Increase Decrease In Accrued Interest Receivable Net Increase in accrued interest payable Increase Decrease In Interest Payable Net Operating lease liability payments Increase Decrease In Operating Lease Liability Payments Increase in other liabilities Increase Decrease In Other Operating Liabilities Increase in other assets Increase Decrease In Other Operating Assets Amortization of subordinate debt Amortization Of Subordinated Debt Net Cash Provided by Operating Activities Net Cash Provided By Used In Operating Activities Cash Flows from Investing Activities Net Cash Provided By Used In Investing Activities [Abstract] Investment securities available-for-sale: Available For Sale Securities [Abstract] Purchases Payments To Acquire Available For Sale Securities Debt Sales Proceeds From Sale Of Available For Sale Securities Debt Maturities, calls and principal repayments Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities Investment securities held-to-maturity: Held To Maturity Securities [Abstract] Maturities, calls and principal repayments Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities Net increase in loans Payments For Proceeds From Loans Receivable Net decrease (increase) in restricted stock Increase Decrease In Restricted Stock Purchase of property and equipment Payments To Acquire Property Plant And Equipment Net Cash Used in Investing Activities Net Cash Provided By Used In Investing Activities Cash Flows from Financing Activities Net Cash Provided By Used In Financing Activities [Abstract] Net (decrease) increase in deposits Increase Decrease In Savings Deposits Proceeds for long-term borrowings Proceeds From Issuance Of Other Long Term Debt Repayment of long-term borrowings Repayments Of Other Long Term Debt Repayment of other borrowed money Repayments Of Other Short Term Debt Increase in advances from borrowers for taxes and insurance Increase Decrease In Advance Payments By Borrowers For Taxes And Insurance Net proceeds from issuance of common stock Proceeds From Issuance Of Common Stock Acquisition of treasury stock Payments For Repurchase Of Common Stock Net Cash (Used in) Provided by Financing Activities Net Cash Provided By Used In Financing Activities Net (Decrease) Increase in Cash and Cash Equivalents Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect Cash and Cash Equivalents - Beginning Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Including Disposal Group And Discontinued Operations Cash and Cash Equivalents - Ending Supplemental Cash Flows Information Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Net Income taxes paid Income Taxes Paid Net Non-cash transfer to other real estate owned Transfer To Other Real Estate Non-cash transfer of loans to loans held for sale Transfer Of Portfolio Loans And Leases To Held For Sale1 Impact of ASC 842 adoption: Impact Of A S C842 Adoption Right-of-use asset Right Of Use Asset Obtained In Exchange For Operating Lease Liability Operating lease liability Right Of Operating Lease Liability Organization Consolidation And Presentation Of Financial Statements [Abstract] The Company Nature Of Operations Accounting Policies [Abstract] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Significant events. Significant events. Significant Events [Abstract] Significant Events Significant Events [Text Block] The entire disclosure for non interest income. Non-Interest Income Non Interest Income Disclosure [Text Block] Earnings Per Share [Abstract] Earnings Per Share Earnings Per Share [Text Block] Employee Stock Ownership Plan (ESOP), Shares In ESOP [Abstract] Employee Stock Ownership Plan Disclosure Of Compensation Related Costs Share Based Payments [Text Block] Investments Debt And Equity Securities [Abstract] Investment Securities Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure [Text Block] Receivables [Abstract] Loans Receivable and Related Allowance for Loan Losses Loans Notes Trade And Other Receivables Disclosure [Text Block] Regulatory matters disclosure. Regulatory Matters Disclosure [Abstract] Regulatory Matters Regulatory Capital Requirements Under Banking Regulations [Text Block] Derivative Instruments And Hedging Activities Disclosure [Abstract] Derivatives and Hedging Activities Derivative Instruments And Hedging Activities Disclosure [Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Equity [Abstract] Comprehensive Income (Loss) Comprehensive Income Note [Text Block] The entire disclosure for equity based incentive compensation plan. Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] Equity Based Incentive Compensation Plan Equity Based Incentive Compensation Plan [Text Block] Deposits Deposit Liabilities Disclosures [Text Block] Leases [Abstract] Leases Lessee Operating Leases [Text Block] Basis of financial statement presentation Basis Of Accounting Policy Policy [Text Block] Leases Lessee Leases Policy [Text Block] Recently Adopted Accounting Pronouncements and Recent Accounting Pronouncements Yet to Be Adopted New Accounting Pronouncements Policy Policy [Text Block] Tabular disclosure for non-interest income of banks. Schedule of Company's Non-Interest Income Schedule Of Non Interest Income Table [Text Block] Schedule of composition of weighted average shares (denominator) used in earnings per share computations Schedule Of Earnings Per Share Basic And Diluted Table [Text Block] Schedule of Investment securities Unrealized Gain Loss On Investments Table [Text Block] Schedule of aggregate investments in an unrealized loss position Available For Sale Securities Continuous Unrealized Loss Position Fair Value Table [Text Block] Schedule of amortized cost and fair value of debt securities by contractual maturity Investments Classified By Contractual Maturity Date Table [Text Block] Schedule of loans receivable Schedule Of Accounts Notes Loans And Financing Receivable [Text Block] Schedule of allowance for loan losses Allowance For Credit Losses On Financing Receivables Table [Text Block] Schedule of impaired loans Impaired Financing Receivables Table [Text Block] Average Impaired Financing Receivables Table [Text Block] Schedule of average recorded investment in impaired loans and related interest income recognized Average Impaired Financing Receivables Table [Text Block] Schedule of classes of loan portfolio Financing Receivable Credit Quality Indicators Table [Text Block] Schedule of loans that are no longer accruing interest by portfolio class Schedule Of Financing Receivables Non Accrual Status Table [Text Block] Schedule of classes of loan portfolio summarized by aging categories Past Due Financing Receivables Table [Text Block] Schedule of TDR loans Troubled Debt Restructurings On Financing Receivables Table [Text Block] Troubled Debt Restructurings Performing Status Table [Text Block] Schedule of performing status of TDR loans Troubled Debt Restructurings Performing Status Table [Text Block] Troubled Debt Restructurings Activity Table [Text Block] Schedule of new TDR's Troubled Debt Restructurings Activity Table [Text Block] Schedule of actual capital amounts and ratios Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Text Block] Schedule of effects of derivative instruments on the Consolidated Financial Statements Schedule Of Derivative Liabilities At Fair Value Table [Text Block] Schedule of offsetting of derivative assets and liabilities. Schedule of offsetting of derivative assets and liabilities Schedule Of Offsetting Of Derivative Assets And Liabilities Table [Text Block] Schedule of net gains (losses) recorded in accumulated other comprehensive income and the Consolidate Statements of Operations Schedule Of Derivative Instruments Effect On Other Comprehensive Income Loss Table [Text Block] Schedule of effects of derivative instruments on Consolidated Statements of Operations Schedule Of Other Derivatives Not Designated As Hedging Instruments Statements Of Financial Performance And Financial Position Location Table [Text Block] Schedule of balances of assets measured at fair value on a recurring basis Fair Value Assets Measured On Recurring Basis [Text Block] Schedule of securities available-for-sale measured at fair value on a recurring basis using significant unobservable inputs Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block] Schedule of assets measured at fair value on a non recurring basis Fair Value Assets Measured On Nonrecurring Basis [Text Block] Schedule of carrying amount and estimated fair value of the Company's financial instruments Fair Value By Balance Sheet Grouping [Text Block] Schedule of components of accumulated other comprehensive income (loss) Schedule Of Accumulated Other Comprehensive Income Loss Table [Text Block] Schedule of other comprehensive loss and related tax effects Schedule Of Comprehensive Income Loss Table [Text Block] Schedule of assumptions used in determining fair value of stock option Schedule Of Share Based Payment Award Stock Options Valuation Assumptions Table [Text Block] Schedule of stock option activity Schedule Of Share Based Compensation Stock Options Activity Table [Text Block] Schedule of restricted stock outstanding Schedule Of Sharebased Compensation Restricted Stock And Restricted Stock Units Activity Table [Text Block] Schedule of deposits classified by type with percentages to total deposits Deposit Liabilities Type Table [Text Block] Schedule Of Interest Expense On Deposits Table [Text Block] Schedule of interest expense on deposits Schedule Of Interest Expense On Deposits Table [Text Block] Schedule of certificates of deposit maturities Time Deposit Maturities Table [Text Block] Components of Lease Expense Lease Cost Table [Text Block] Schedule of Supplemental Information of Leases. Schedule of Supplemental Information of Leases Schedule Of Supplemental Information Of Leases Table [Text Block] Schedule of Maturities of Lease Liabilities Lessee Operating Lease Liability Maturity Table [Text Block] Summary of significant accounting policies. Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Accounting Standards Update Adjustments For New Accounting Pronouncements [Axis] Accounting Standards Update Type Of Adoption [Member] ASU 2016-02 [Member] Accounting Standards Update201602 [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Operating lease, ROU assets Operating lease, liabilities Provision for loan and lease losses before tax. Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Collaborative Arrangement and Arrangement Other than Collaborative Type Of Arrangement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative Arrangements And Nonarrangement Transactions [Member] Loan modification agreements. Loan Modification Agreements [Member] Loan Modification Agreements [Member] COVID-19 modified loans. COVID-19 Modified Loans [Member] C O V I D19 Modified Loans [Member] Loan Restructuring Modification Loan Restructuring Modification [Axis] Loan Restructuring Modification Loan Restructuring Modification [Domain] Original contractual monthly payments. Original Contractual Monthly Payments [Member] Original Contractual Monthly Payments [Member] Interest only payments. Interest Only Payments [Member] Interest Only Payments [Member] Loan Restructuring Modification Name Loan Restructuring Modification Name [Axis] Loan Restructuring Modification Name Loan Restructuring Modification Name [Domain] Initial forbearance period. Initial Forbearance Period [Member] Initial Forbearance Period [Member] Second forbearance period. Second Forbearance Period [Member] Second Forbearance Period [Member] Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Provision for loan losses, pre-tax Provision For Loan And Lease Losses Before Tax Initial payment and deferrals forbearance period. Maximum additional period of second forbearance. Percentage of loans outstanding. Initial payment and deferrals forbearance period Initial Payment And Deferrals Forbearance Period Maximum additional period of second forbearance Maximum Additional Period Of Second Forbearance Number of loan modification agreements Financing Receivable Modifications Number Of Contracts2 Loans outstanding Loans And Leases Receivable Gross Carrying Amount Percentage of loans outstanding Percentage Of Loans Outstanding Number of loans obtained. Loans and leases receivable amount. Number of employees estimated to retain. Loans and leases receivable average amount. Interest and fee income generated from all commercial, industrial, and agricultural loans. Cares act initial amount of loan funded. Loans Insured or Guaranteed by Government Authorities Loans Insured Or Guaranteed By Government Authorities [Axis] Loans Insured or Guaranteed by Government Authorities Loans Insured Or Guaranteed By Government Authorities [Domain] Paycheck protection program loans. Paycheck Protection Program Loans [Member] Paycheck Protection Program Loans [Member] Initial amount of loan funded Cares Act Initial Amount Of Loan Funded Number of loans obtained Number Of Loans Obtained Total loans obtained Loans And Leases Receivable Amount Average loan size Loans And Leases Receivable Average Amount Estimated employees to retain Number Of Employees Estimated To Retain Loans, fee income expected to generate Fee Income Of Commercial And Industrial Loans Expected To Generate Gain (loss) on sale and call of investments, net. Product and Service Product Or Service [Axis] Product and Service Products And Services [Domain] ATM. ATM Fees [Member] A T M [Member] Credit Card Fee Income [Member] Credit Card [Member] DDA. DDA Fee Income [Member] D D A Fee [Member] DDA Service fee. DDA Service Fees [Member] D D A Service Fee [Member] Debit Card Fees [Member] Debit Card [Member] Member stands for other loan fee income. Other Loan Fee Income [Member] Other Loan Fee Income [Member] Member stands for other fee income. Other Fee Income [Member] Other Fee Income [Member] Member stands for other non-interest income. Other Non-interest Income [Member] Other Non Interest Income [Member] Rental income Net gains on sale and call of investments Gain Loss On Sale And Call Of Investments Net Non-interest income within the scope of other GAAP topics Non Interest Income Other Than Amounts From Contracts With Customers Non-interest income from contracts with customers Revenue From Contract With Customer Excluding Assessed Tax Recognition of swap fees. Net swap fees Recognition Of Swap Fees Restricted shares issued Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Stock options Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross Weighted average shares outstanding Weighted Average Number Of Shares Issued Basic Average unearned ESOP shares Weighted Average Number Of Shares Employee Stock Ownership Plan Shares Not Committed To Be Released Basic weighted average shares outstanding Plus: effect of potential dilutive common stock equivalents - stock options Incremental Common Shares Attributable To Call Options And Warrants Diluted weighted average common shares outstanding The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require unallocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested. Employee Stock Ownership Plan E S O P Shares In E S O P [Abstract] Employee stock ownership plan (ESOP), shares purchased Employee Stock Ownership Plan E S O P Shares In E S O P Employee stock ownership plan (ESOP), amount borrowed Employee Stock Ownership Plan E S O P Debt Structure Direct Loan Amount Average price of shares purchased (in dollars per share) Employee Stock Ownership Plan E S O P Weighted Average Purchase Price Of Shares Purchased Employee stock ownership plan (ESOP), debt structure, direct loan, description Employee Stock Ownership Plan E S O P Debt Structure Direct Loan Description Number of unallocated shares Employee Stock Ownership Plan E S O P Number Of Unallocated Shares Number of allocated shares held by the ESOP Employee Stock Ownership Plan E S O P Number Of Allocated Shares Aggregate fair value of shares held by the ESOP Employee Stock Ownership Plan E S O P Deferred Shares Fair Value This element represents investment securities amortized cost. Schedule of available-for-sale securities and cost-method investments. Schedule Of Available For Sale Securities [Table] Schedule Of Available For Sale Securities [Table] Financial Instrument Financial Instrument [Axis] Financial Instruments Transfers And Servicing Of Financial Instruments Types Of Financial Instruments [Domain] U. S. Government Agencies [Member] U S Government Agencies Debt Securities [Member] State And Municipal Obligations [Member] U S States And Political Subdivisions [Member] Single issuer trust preferred security. Single Issuer Trust Preferred Security [Member] Single Issuer Trust Preferred Security [Member] Corporate Debt Securities [Member] Corporate Debt Securities [Member] Mutual Fund [Member] Mutual Fund [Member] Collateralized Mortgage Obligations [Member] Collateralized Mortgage Obligations [Member] Investment Type Investment Type [Axis] Investments Investment Type Categorization [Member] Fixed Rate [Member] Fixed Rate [Member] Fixed Rate [Member] Schedule of available-for-sale securities and cost-method investments [Line Items] Schedule Of Available For Sale Securities And Cost Method Investments [Line Items] Amortized Cost Gross Unrealized Gains Available For Sale Debt Securities Accumulated Gross Unrealized Gain Before Tax Gross Unrealized Losses Available For Sale Debt Securities Accumulated Gross Unrealized Loss Before Tax Fair value Amortized Cost Gross Unrealized Gains Held To Maturity Securities Accumulated Unrecognized Holding Gain Gross Unrealized Losses Held To Maturity Securities Accumulated Unrecognized Holding Loss Fair value Amortized Cost Equity Securities Fv Ni Cost Gross Unrealized Gains Equity Securities F V N I Gross Unrealized Gain Before Tax Gross Unrealized Losses Equity Securities F V N I Gross Unrealized Loss Before Tax Fair value Total investment securities Amortized Cost Investment Securities Amortized Cost Total investment securities Gross Unrealized Gains Investment Securities Gross Unrealized Gains Total investment securities Gross Unrealized Losses Investment Securities Gross Unrealized Losses Total investment securities Fair Value Investment Securities Fair Value Marketable Securities [Table] Marketable Securities [Table] Marketable Securities [Line Items] Marketable Securities [Line Items] Gain on sale of securities available for sale Debt Securities Available For Sale Gain Loss Proceeds from call of securities, associated with sale Proceeds From Sale And Maturity Of Available For Sale Securities Amount of accumulated pre-tax unrealized loss on securities classified as securities impacting investments. This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized as securities. Less than 12 Months: Fair Value Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Less than 12 Months: Unrealized Losses Debt Securities Available For Sale Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss 12 Months or longer: Fair Value Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer 12 Months or longer: Unrealized Losses Debt Securities Available For Sale Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss Total: Fair Value Debt Securities Available For Sale Unrealized Loss Position Total: Unrealized Losses Debt Securities Available For Sale Unrealized Loss Position Accumulated Loss Less than 12 Months: Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Less than 12 Months: Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position Less Than12 Months Accumulated Loss 12 Months or longer: Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value 12 Months or longer: Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position12 Months Or Longer Accumulated Loss Total: Fair Value Held To Maturity Securities Continuous Unrealized Loss Position Fair Value Total: Unrealized Losses Held To Maturity Securities Continuous Unrealized Loss Position Accumulated Loss Total investment securities in an unrealized loss position less than 12 months fair value Investment Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value Total investment securities in an unrealized loss position less than 12 months gross unrealized loss Investment Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses Accumulated In Investments Total investment securities in an unrealized loss position 12 months or more fair value Investment Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value Total investment securities in an unrealized loss position 12 months or more gross unrealized loss Investment Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses Accumulated In Investments Total investment securities in an unrealized loss position fair value Investment Securities Continuous Unrealized Loss Position Fair Value Total investment securities in an unrealized loss position gross unrealized loss Investment Securities Continuous Unrealized Loss Position Aggregate Losses Accumulated In Investments Number of portfolio investments. Number of portfolio investments Number Of Portfolio Investments Deposit liabilities collateral short term borrowings issued financial instruments. Carrying value of investment securities Pledged against hedge. Fair value of available for sale securities transferred Deposit Liabilities Collateral Issued Financial Instruments Fair value of available for sale securities short-term borrowings transferred Deposit Liabilities Collateral Short Term Borrowings Issued Financial Instruments Carrying value of investment securities pledged against hedge Carrying Value Of Investment Securities Pledged Against Hedge Equity securities, FV-NI maturities amortized cost. Equity securities, FV-NI maturities after ten years fair value. The abstract of held to maturity mortgage backed securities. Available for Sale, Amortized Cost: Available For Sale Securities Debt Maturities Amortized Cost [Abstract] Within 1 year Available For Sale Securities Debt Maturities Within One Year Amortized Cost Over 1 year through five years Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost After 5 years through ten years Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost Over 10 years Available For Sale Securities Debt Maturities After Ten Years Amortized Cost Held-to-Maturity, Amortized Cost: Held To Maturity Securities Debt Maturities Net Carrying Amount [Abstract] Over 1 year through five years Held To Maturity Securities Debt Maturities After One Through Five Years Net Carrying Amount After 5 years through ten years Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount CMO, fixed-rate Held To Maturity Securities Debt Maturities Without Single Maturity Date Net Carrying Amount Held-to-Maturity, Amortized Cost, Total Held To Maturity Securities Amortized Cost Before Other Than Temporary Impairment Equity, Amortized Costs: Equity Securities F V N I Maturities Amortized Cost [Abstract] Over 10 years Equity Securities F V N I Maturities After Ten Years Amortized Cost Equity securities, FV-NI maturities fair value. Available-for-Sale, Fair Value: Available For Sale Securities Debt Maturities Fair Value Rolling Maturity [Abstract] Within 1 year Available For Sale Securities Debt Maturities Within One Year Fair Value Over 1 year through five years Available For Sale Securities Debt Maturities After One Through Five Years Fair Value After 5 years through ten years Available For Sale Securities Debt Maturities After Five Through Ten Years Fair Value Over 10 years Available For Sale Securities Debt Maturities After Ten Years Fair Value Available-for-sale, Fair Value, Total Available For Sale Securities Held-to-Maturity, Fair Value: Held To Maturity Securities Debt Maturities Fair Value [Abstract] Over 1 year through five years Held To Maturity Securities Debt Maturities Next Rolling Twelve Months Fair Value After 5 years through ten years Held To Maturity Securities Debt Maturities Rolling Year Six Through Ten Fair Value Mortgage-backed securities: Held To Maturity Mortgagebacked Securities [Abstract] CMO, fixed-rate Held To Maturity Securities Debt Maturities Without Single Maturity Date Fair Value Held-to-Maturity, Fair Value, Total Equity, Fair Value: Equity Securities F V N I Maturities Fair Value [Abstract] Over 10 years Equity Securities F V N I Maturities After Ten Years Fair Value Equity, Fair Value, Total Total investment securities, Fair Value Schedule Of Impaired Financing Receivable [Table] Schedule Of Impaired Financing Receivable [Table] Class of Financing Receivable Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis] Class of Financing Receivable Financing Receivable Recorded Investment Class Of Financing Receivable [Domain] Residential Mortgage [Member] Residential Portfolio Segment [Member] Residential And Commercial [Member] Construction and Development - Residential and Commercial Receivables [Member] Residential And Commercial [Member] Construction And Development Land [Member] Construction and Development - Land Receivable [Member] Construction And Development Land [Member] Construction And Development [Member] Construction And Development Receivable [Member] Construction And Development [Member] Commercial Real Estate [Member] Commercial Real Estate Portfolio Segment [Member] Farmland [Member] Commercial Farmland [Member] Farmland [Member] Commercial multi family. Commercial Multi Family Receivable [Member] Commercial Multi Family [Member] Commercial Other Loan [Member] Commercial - Other Receivable [Member] Commercial Other Loan [Member] Commercial [Member] Commercial Portfolio Segment [Member] Consumer - Home Equity Lines of Credit [Member] Home Equity [Member] Consumer Second Mortgages [Member] Consumer - Second Mortgages Receivable [Member] Consumer Second Mortgages [Member] Consumer Other Loan [Member] Consumer - Other Receivable [Member] Consumer Other Loan [Member] Consumer Receivable [Member] Consumer Portfolio Segment [Member] Industry Sector Equity Securities By Industry [Axis] Industry Sector Equity Securities Industry [Member] Commercial and Industrial [Member] Commercial And Industrial Sector [Member] Financing Receivable, Impaired [Line Items] Financing Receivable Impaired [Line Items] Total loans Deferred loan fees and costs, net Loans And Leases Receivable Deferred Income Allowance for loan losses Total loans receivable, net Unallocated [Member] Unallocated Financing Receivables [Member] Allowance for Loan and Lease Losses [Roll Forward] Allowance For Loan And Lease Losses Roll Forward Allowance for credit losses, Beginning balance Charge-offs Allowance For Loan And Lease Losses Write Offs Recoveries Allowance For Loan And Lease Loss Recovery Of Bad Debts Provisions Allowance for credit losses, Ending Balance Allowance for credit losses: Ending balance: individually evaluated for impairment Financing Receivable Allowance For Credit Losses Individually Evaluated For Impairment1 Allowance for credit losses: Ending balance: collectively evaluated for impairment Financing Receivable Allowance For Credit Losses Collectively Evaluated For Impairment Loans receivable Loans receivable: Ending balance: individually evaluated for impairment Financing Receivable Individually Evaluated For Impairment Loans Receivable: Ending balance: collectively evaluated for impairment Financing Receivable Collectively Evaluated For Impairment Potential impairment evaluated Reversal of interest income. Internal Credit Assessment Internal Credit Assessment [Axis] Internal Credit Assessment Internal Credit Assessment [Domain] Substandard [Member] Substandard [Member] Financing receivable, collateral dependent TDR loan Financing Receivable Modifications Recorded Investment Charge-off of TDR loan Financing Receivables Impaired Troubled Debt Restructuring Write Down Provision for loan losses Reversal of interest income Reversal Of Interest Income Number of loans Impaired financing receivable Impaired Financing Receivable Recorded Investment Construction and Development - Land Receivable [Member] Impaired Loans With Specific Allowance, Recorded Investment Impaired Financing Receivable With Related Allowance Recorded Investment Impaired Loans With Specific Allowance, Related Allowance Impaired Financing Receivable Related Allowance Impaired Loans With No Specific Allowance, Recorded Investment Impaired Financing Receivable With No Related Allowance Recorded Investment Total Impaired Loans Recorded Investment Total Impaired Loans Unpaid Principal Balance Impaired Financing Receivable Unpaid Principal Balance Average Impaired Loans Impaired Financing Receivable Average Recorded Investment Interest Income Recognized on Impaired Loans Impaired Financing Receivable Interest Income Accrual Method Pass [Member] Pass [Member] Special Mention [Member] Special Mention [Member] Doubtful [Member] Doubtful [Member] Loans and Leases, gross Total non-accrual loans Financing Receivable Recorded Investment Nonaccrual Status Interest Income Non Accrual Loans Non-accrual loans interest income Interest Income Non Accrual Loans Loans past due 90 days or more and still accruing interest Financing Receivable Recorded Investment90 Days Past Due And Still Accruing Financial Asset, Period Past Due Financing Receivables Period Past Due [Axis] Financial Asset, Period Past Due Financing Receivables Period Past Due [Domain] 30 to 59 Days Past Due [Member] Financing Receivables30 To59 Days Past Due [Member] 60 to 89 Days Past Due [Member] Financing Receivables60 To89 Days Past Due [Member] Equal to Greater than 90 Days Past Due [Member] Financing Receivables Equal To Greater Than90 Days Past Due [Member] Current Financing Receivable Recorded Investment Current Past Due Financing Receivable Recorded Investment Past Due Total Loans Receivable Accruing 90 Days or More Past Due Real estate through foreclosure Real Estate Acquired Through Foreclosure Total Troubled Debt Restructurings, Number of Loans Total Troubled Debt Restructurings, Recorded Investment Troubled Debt Restructured Loans That Have Defaulted on Modified Terms Within The Past 12 Months, Number of Loans Financing Receivable Modifications Subsequent Default Number Of Contracts1 Troubled Debt Restructured Loans That Have Defaulted on Modified Terms Within The Past 12 Months, Recorded Investment Financing Receivable Modifications Subsequent Default Recorded Investment1 Performing Financing Receivable [Member] Performing Financing Receivable [Member] Nonperforming Financing Receivable [Member] Nonperforming Financing Receivable [Member] Recorded Investment Number of financing receivables that have been modified by troubled debt restructurings. Number of Contracts Financing Receivable Modifications Number Of Contracts3 Pre-Modifications Outstanding Recorded Investment Financing Receivable Modifications Pre Modification Recorded Investment2 Post-Modification Outstanding Recorded Investment Financing Receivable Modifications Post Modification Recorded Investment2 Percentage of repurchase of outstanding common stock as condition warrant. Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Table] Schedule Of Compliance With Regulatory Capital Requirements Under Banking Regulations [Table] Statistical Measurement Range [Axis] Statistical Measurement Range [Member] Maximum [Member] Maximum [Member] Minimum [Member] Minimum [Member] Consolidated Entities Consolidated Entities [Axis] Consolidated Entities Consolidated Entities [Domain] Malvern Federal Savings Bank [Member] Subsidiaries [Member] Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] Stock repurchase plan, number of shares authorized Stock Repurchase Program Number Of Shares Authorized To Be Repurchased Percentage of repurchase of outstanding common stock as condition warrant Percentage Of Repurchase Of Outstanding Common Stock As Condition Warrant Stock repurchased during period, shares Treasury Stock Shares Acquired Average cost per share Treasury Stock Acquired Average Cost Per Share Shares remain available for issuance Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Grant The minimum amount of Tier 1 Common Capital for capital adequacy purposes divided by average assets as defined in the regulations used for buffer. The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. Common equity Tier 1 capital ratio Common Equity Tier One Capital Ratio Tier 1 capital ratio Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Tier 1 Capital conservation buffer Tier One Capital Required For Capital Conservation Buffer Total capital ratio Capital To Risk Weighted Assets Capital conservation buffer percentage of risk-weighted assets Tier One Capital Conservation Buffer Percentage Of Risk Weighted Assets Tier 1 Common Capital as defined in the regulations. Also called Core Capital. Parent Company [Member] Parent Company [Member] Capital (to adjusted tangible assets): Actual Amount Tier One Leverage Capital Common equity Tier 1(to risk-weighted assets): Actual Amount Tier One Common Equity Tier 1 Capital (to risk-weighted assets): Actual Amount Tier One Risk Based Capital Total Capital (to risk-weighted assets): Actual Amount Capital Tier 1 Common Capital divided by average assets as defined in the regulations. Capital (to adjusted tangible assets): Actual Ratio Tier One Leverage Capital To Average Assets Common equity Tier 1(to risk-weighted assets): Actual Ratio Tier One Capital Equity To Average Assets Tier 1 Capital (to risk-weighted assets): Actual Ratio Tier One Risk Based Capital To Risk Weighted Assets Total Capital (to risk-weighted assets): Actual Ratio The minimum amount of Tier 1 Common Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. Capital (to adjusted tangible assets): For Capital Adequacy Purposes Amount Tier One Leverage Capital Required For Capital Adequacy Common Equity Tier 1 Capital (to risk weighted assets) Tier One Capital Equity Required For Capital Adequacy Tier 1 Capital (to risk weighted assets) Tier One Risk Based Capital Required For Capital Adequacy Total Capital (to risk weighted assets) Capital Required For Capital Adequacy The minimum amount of Tier 1 Common Capital for capital adequacy purposes divided by average assets as defined in the regulations. Capital (to adjusted tangible assets): For Capital Adequacy Purposes Ratio Tier One Leverage Capital Required For Capital Adequacy To Average Assets Common Equity Tier 1 Capital (to risk weighted assets) Tier One Capital Equity Required For Capital Adequacy To Average Assets Tier 1 Capital (to risk weighted assets) Total Capital (to risk weighted assets) Capital Required For Capital Adequacy To Risk Weighted Assets The amount of Tier 1 Common Capital required to be categorized as well capitalized under the regulatory framework for prompt corrective action. Capital (to adjusted tangible assets): To be Well Capitalized under Prompt Corrective Action Provisions Capital Amount Tier One Leverage Capital Required To Be Well Capitalized Common Equity Tier 1 Capital (to risk weighted assets) Tier One Capital Equity Required To Be Well Capitalized Tier 1 Capital (to risk weighted assets) Tier One Risk Based Capital Required To Be Well Capitalized Total Capital (to risk weighted assets) Capital Required To Be Well Capitalized The amount of Tier 1 Common Capital required to be categorized as well capitalized divided by average assets as defined in the regulatory framework for prompt corrective action. Capital (to adjusted tangible assets): To be Well Capitalized under Prompt Corrective Action Provisions Ratio Tier One Leverage Capital Required To Be Well Capitalized To Average Assets Common Equity Tier 1 Capital (to risk weighted assets) Tier One Capital Equity Required To Be Well Capitalized To Average Assets Tier 1 Capital (to risk weighted assets) Tier One Risk Based Capital Required To Be Well Capitalized To Risk Weighted Assets Total Capital (to risk weighted assets) Capital Required To Be Well Capitalized To Risk Weighted Assets Estimated derivative interest expense. Derivative [Table] Derivative [Table] Derivative Instrument Derivative Instrument Risk [Axis] Derivative Contract Derivative Contract Type [Domain] Interest Rate Swap [Member] Interest Rate Swap [Member] Derivative [Line Items] Derivative [Line Items] Estimated interest expense Estimated Derivative Interest Expense Hedging Designation Hedging Designation [Axis] Hedging Designation Hedging Designation [Domain] Designated as Hedging Instrument [Member] Designated As Hedging Instrument [Member] Derivatives Not Designated As Hedging Instrument [Member] Nondesignated [Member] Interest Rate Swap Agreements [Member] Balance Sheet Location Balance Sheet Location [Axis] Balance Sheet Location Balance Sheet Location [Domain] Other Assets [Member] Other Assets [Member] Other Liabilities [Member] Other Liabilities [Member] Notional Amount, Asset Derivatives Derivative Asset Notional Amount Notional Amount, Liability Derivatives Derivative Liability Notional Amount Fair Value Derivative Fair Value Of Derivative Net Derivative asset fair value amount offset. Derivative fair value of derivative liability net offset against collateral. Offsetting of Derivative Assets Offsetting Derivative Assets [Abstract] Gross Amounts of Recognized Assets Derivative Fair Value Of Derivative Asset Gross Amounts Offset in the Statement of Financial Condition Derivative Asset Fair Value Amount Offset Net Amounts of Assets presented in the Statement of Financial Condition Derivative Assets Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments Derivative Collateral Obligation To Return Securities Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Received Derivative Collateral Obligation To Return Cash Gross Amounts Not Offset in the Statements of Financial Condition, Net Amount Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral Offsetting of Derivative Liabilities Offsetting Derivative Liabilities [Abstract] Gross Amounts of Recognized Liabilities Derivative Fair Value Of Derivative Liability Gross Amounts Offset in the Statement of Financial Condition Derivative Liability Fair Value Amount Offset Net Amounts of Liabilities presented in the Statement of Financial Condition Derivative Liabilities Gross Amounts Not Offset in the Statements of Financial Condition, Financial Instruments Derivative Collateral Right To Reclaim Securities Gross Amounts Not Offset in the Statements of Financial Condition, Cash Collateral Posted Derivative Collateral Right To Reclaim Cash Gross Amounts Not Offset in the Statements of Financial Condition, Net Amount Derivative Fair Value Of Derivative Liability Net Offset Against Collateral Amount of Loss Recognized in OCI on Derivative Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax Amount of Gain (Loss) Reclassified from OCI to Interest Expense Derivative Instruments Gain Loss Reclassified From Accumulated O C I Into Income Effective Portion Net Income Statement Location Income Statement Location [Axis] Income Statement Location Income Statement Location [Domain] Other Income [Member] Other Income [Member] Amount of Gain (Loss) Recognized in Income on derivatives Derivative Gain Loss On Derivative Net Minimum collateral posting thresholds with derivative counterparties. Minimum collateral posting thresholds with derivative counterparties Minimum Collateral Posting Thresholds With Derivative Counterparties Measurement Frequency Fair Value By Measurement Frequency [Axis] Measurement Frequency Fair Value Measurement Frequency [Domain] Fair Value, Measurements, Recurring [Member] Fair Value Measurements Recurring [Member] Fair Value Hierarchy and NAV Fair Value By Fair Value Hierarchy Level [Axis] Fair Value Hierarchy and NAV Fair Value Measurements Fair Value Hierarchy [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value Inputs Level1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value Inputs Level2 [Member] Fair Value, Inputs, Level 3 [Member] Fair Value Inputs Level3 [Member] Mutual Funds [Member] Assets Investment securities available for sale, at fair value Equity investment securities Derivative instruments Derivative instruments Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Balance, October 1, 2019 Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value Payments received Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements Included in earnings Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings Included in other comprehensive income Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income Purchases Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases Transfers in and/or out of Level 3 Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Transfers Net Balance, June 30, 2020 Fair Value, Measurements, Nonrecurring [Member] Fair Value Measurements Nonrecurring [Member] Asset Class Fair Value By Asset Class [Axis] Asset Class Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation By Asset Class [Domain] Other real estate owned. Other Real Estate Owned [Member] Other Real Estate Owned [Member] Impaired loans net. Impaired Loans Net [Member] Impaired Loans Net [Member] Weighted Average [Member] Weighted Average [Member] Assets, fair value, nonrecurring basis Assets Fair Value Disclosure Other Real Estate Owned, Measurement Input Other Real Estate Owned Measurement Input Impaired Loans, Measurement Input Loans Held For Sale Measurement Input Impaired financing receivable with related allowance recorded investment includes impaired loans were partially charged-off. Impaired Loans with aggregate balance Impaired Financing Receivable With Related Allowance Recorded Investment Includes Impaired Loans Were Partially Charged Off Impaired Loans with specific loan loss allowance Impaired Loans with aggregate balance Fair value portion of accrued interest receivable assets held by the entity, Fair value portion of restricted stock assets held by the entity, Fair value portion of savings accounts liabilities held by the entity, Fair value portion of Checking and NOW accounts liabilities held by the entity, Fair value portion of money market accounts liabilities held by the entity, Fair value portion of certificates of deposit liabilities held by the entity, Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] Measurement Basis Fair Value By Measurement Basis [Axis] Fair Value Disclosure Item Amounts [Default] Portion At Fair Value Fair Value Disclosure [Member] Fair Value Measurement Fair Value Disclosure Item Amounts [Domain] Carrying Amount [Member] Carrying Reported Amount Fair Value Disclosure [Member] Fair Value [Member] Estimate Of Fair Value Fair Value Disclosure [Member] Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items] Financial assets: Financial Instruments Financial Assets Balance Sheet Groupings [Abstract] Cash and cash equivalents Cash And Cash Equivalents Fair Value Disclosure Investment securities available-for-sale Investment securities held-to-maturity Loans receivable, net (including impaired loans) Loans Receivable Fair Value Disclosure Accrued interest receivable Accrued Interest Receivable Fair Value Disclosure Restricted stock Restricted Stock Fair Value Disclosure Mortgage servicing rights (included in Other Assets) Mortgage Backed Securities Available For Sale Fair Value Disclosure Derivatives (included in Other Assets) Financial liabilities: Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract] Savings accounts Savings Accounts Fair Value Disclosure Checking and NOW accounts Checking And N O W Accounts Fair Value Disclosure Money market accounts Money Market Accounts Fair Value Disclosure Certificates of deposit Certificates Of Deposit Fair Value Disclosure Borrowings (excluding sub debt) Federal Home Loan Bank Borrowings Fair Value Disclosure Subordinated debt Fair Value Liabilities Measured On Recurring Basis Subordinated Debt Obligations Accrued interest payable Accrued Liabilities Fair Value Disclosure Represents information related to other comprehensive income loss available for sale securities adjustment before tax. Reprents as a total accumulated other comprehensive income loss net of tax. Net unrealized holding losses on available-for-sale securities Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax Tax effect Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax1 Net of tax amount Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax Fair value adjustments on derivatives Other Comprehensive Income Loss Derivative Excluded Component Increase Decrease Adjustments After Tax Tax effect Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax Net of tax amount Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax Total accumulated other comprehensive loss Total Accumulated Other Comprehensive Income Loss Net Of Tax Other comprehensive income loss adjustment for loss recorded on replacement of derivative. Net realized gain on securities available-for-sale Amortization of unrealized holding losses on securities transferred from available-for-sale to held-to-maturity Adjustment for loss recorded on replacement of derivative Other Comprehensive Income Loss Adjustment For Loss Recorded On Replacement Of Derivative Other comprehensive loss before taxes Other Comprehensive Income Loss Before Tax Tax effect Other Comprehensive Income Loss Tax1 Equity Based Incentive Compensation Plan Details 1 [Abstract] Equity Based Incentive Compensation Plan Details1 [Abstract] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Plan Name Plan Name [Axis] Plan Name Plan Name [Domain] Malvern Bancorp, Inc. 2014 Long term incentive compensation plan (the 2014 Plan) Malvern Bancorp, Inc. 2014 Long Term Incentive Compensation Plan (the 2014 Plan) [Member] Malvern Bancorp Inc2014 Long Term Incentive Compensation Plan [Member] Vesting Vesting [Axis] Vesting Vesting [Domain] First Year Anniversary [Member] Share Based Compensation Award Tranche One [Member] Award Type Award Type [Axis] Award Type Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Restricted Stock [Member] Restricted Stock [Member] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Share Based Compensation Arrangement By Share Based Payment Award [Line Items] Maximum number of shares available for grants Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized Number of remaining shares available for future grants Common Stock Capital Shares Reserved For Future Issuance Description of vesting right Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Rights First vesting percentage Sharebased Compensation Arrangement By Sharebased Payment Award Award Vesting Rights Percentage First vesting period Share Based Compensation Arrangement By Share Based Payment Award Award Requisite Service Period1 Granted shares Share-based compensation Granted shares Forfeited shares Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period Stock Option [Member] Stock Option [Member] Weighted Average Fair Value of Awards Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Risk Free Rate Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate Dividend Yield Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate Volatility Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Expected Life Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Roll Forward Outstanding, beginning of year Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number Granted Exercised Stock Issued During Period Shares Stock Options Exercised Forfeited/cancelled/expired Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Outstanding, end of year Exercisable, end of year Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number Nonvested, at end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Number Of Shares Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Rollforward Outstanding, beginning of year Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price Granted Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price Exercised Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price Forfeited/cancelled/expired Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price Outstanding, end of year Exercisable, end of year Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price Nonvested, at end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Remaining Contractual Life [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures [Abstract] Outstanding, end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 Exercisable, end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 Share based compensation arrangement by share based payment award options forfeitures and expirations intrinsic value. Share based compensation arrangement by share based payment award options additional disclosures 1. Share-based Compensation Arrangement by Share-based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Options Additional Disclosures1 [Abstract] Outstanding, beginning of year Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value Forfeited/cancelled/expired Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations Intrinsic Value Outstanding, end of year Exercisable, end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 Nonvested, at end of year Share Based Compensation Arrangement By Share Based Payment Award Options Vested And Expected To Vest Outstanding Aggregate Intrinsic Value Compensation cost not yet recognized Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Weighted average period Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Roll Forward Outstanding, beginning of year Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number Granted Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Forfeited/cancelled/expired Outstanding, end of year Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Roll Forward Outstanding, beginning of year Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value Granted Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value Forfeited/cancelled/expired Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value Outstanding, end of year Percentage of total deposits before certificate accounts to total deposits Percentage of non-interest bearing demand accounts to total deposits Offsetting [Abstract] Savings Interest Bearing Domestic Deposit Savings Money market accounts Interest Bearing Domestic Deposit Money Market Interest-bearing demand Interest Bearing Domestic Deposit Demand Non-interest-bearing demand Noninterest Bearing Domestic Deposit Demand Total deposits before certificates of deposit Total Deposits Before Certificate Accounts Certificates of deposit Interest Bearing Domestic Deposit Certificates Of Deposits Percentage of savings Percentage Of Interest Bearing Domestic Deposits To Deposits Savings Percentage of money market accounts Percentage Of Interest Bearing Domestic Deposits To Deposits Money Market Percentage of interest bearing demand Percentage Of Interest Bearing Domestic Deposits To Deposits Demand Percentage of non-interest bearing demand Percentage Of Non Interest Bearing Demand Accounts To Total Deposits Percentage of total deposits before certificates of deposit Percentage Of Total Deposits Before Certificate Accounts To Total Deposits Percentage of certificates of deposit Percentage Of Interest Bearing Domestic Deposits To Deposits Certificates Of Deposit Percentage of total deposits Percentage Of Interest Bearing Domestic Deposits To Deposits Deposits By Type [Abstract] Certificates of deposit of $250,000 and greater Time Deposits100000 Or More Brokered deposits Interest Bearing Domestic Deposit Brokered Savings accounts Interest Expense Domestic Deposit Liabilities Savings Money market accounts Interest Expense Domestic Deposit Liabilities Money Market Interest-bearing demand Interest Expense Domestic Deposit Liabilities Demand Certificates of deposit Interest Expense Domestic Deposit Liabilities Certificates Of Deposit Total Time deposit maturities after rolling year four. 2021 Time Deposit Maturities Next Rolling Twelve Months 2022 Time Deposit Maturities Rolling Year Two 2023 Time Deposit Maturities Rolling Year Three 2024 Time Deposit Maturities Rolling Year Four Thereafter Time Deposit Maturities After Rolling Year Four Total Time Deposits Number of offices. Number of leases. Number of office leases included in option to extend. Lessee Lease Description [Table] Lessee Lease Description [Table] Geographical Statement Geographical [Axis] Geographical Segment Geographical [Domain] New Castle County, Montchanin, Delaware DELAWARE Morris County, Morristown, New Jersey NEW JERSEY Palm Beach County, Palm Beach, Florida FLORIDA Allentown, Pennsylvania PANAMA Name of Property Real Estate And Accumulated Depreciation Description Of Property [Axis] Name of Property Real Estate And Accumulated Depreciation Name Of Property [Domain] Private banking office. Private Banking Office Private Banking Office [Member] Representative office. Representative Office Representative Office [Member] Short-term leases. Short-term Leases [Member] Short Term Leases [Member] Lessee Lease Description [Line Items] Lessee Lease Description [Line Items] Number of offices Number Of Offices Number of leases Number Of Leases Number of office leases included in option to extend Number Of Office Leases Included In Option To Extend Lessee, Operating Lease, Existence of Option to Extend [true false] Lessee Operating Lease Existence Of Option To Extend Lessee, operating lease, renewal term Lessee Operating Lease Renewal Term Finance lease cost. Operating lease cost Operating Lease Cost Finance lease cost Finance Lease Cost Short-term lease cost Short Term Lease Cost Total Lease Cost Supplemental balance sheet information. Supplemental balance sheet information Supplemental Balance Sheet Information [Abstract] Weighted average remaining lease term Operating Lease Weighted Average Remaining Lease Term1 Weighted average discount rate Operating Lease Weighted Average Discount Rate Percent Supplemental cash flow information Operating cash flows from operating leases Operating Lease Payments ROU assets obtained in exchange for lease obligations Remainder of 2020 Lessee Operating Lease Liability Payments Remainder Of Fiscal Year 2021 Lessee Operating Lease Liability Payments Due Year Two 2022 Lessee Operating Lease Liability Payments Due Year Three 2023 Lessee Operating Lease Liability Payments Due Year Four 2024 Lessee Operating Lease Liability Payments Due Year Five Thereafter Lessee Operating Lease Liability Payments Due After Year Five Total lease payments Lessee Operating Lease Liability Payments Due Less: imputed interest Lessee Operating Lease Liability Undiscounted Excess Amount Total