Entity Central Index Key Represents the fees and commission. Non-interest income within the scope of other GAAP topics. 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. Amount of tax expense (benefit) allocated to other comprehensive income (loss). Total investment securities Gross Unrealized Gains Document And Entity Information [Abstract] Entity Registrant Name Entity Registrant Name Entity Central Index Key Document Type Document Type Trading Symbol Trading Symbol 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 Shell Company Entity Shell Company 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 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 $23,783 and $24,804, respectively) Available For Sale Securities Debt Securities Investment securities held to maturity (fair value of $23,309 and $28,968, respectively) Held To Maturity Securities Restricted stock, at cost Federal Home Loan Bank Stock Loans receivable, net of allowance for loan losses of $10,106 and $9,021, respectively Loans And Leases Receivable Net Reported Amount Other real estate owned Other Real Estate Accrued interest receivable Interest Receivable Property and equipment, net Property Plant And Equipment Net Deferred income taxes Deferred Tax Assets Liabilities 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-noninterest-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 Other short-term borrowings Other Short Term Borrowings 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 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; 7,782,258 and 7,765,395 shares issued and outstanding, respectively, at June 30, 2019 and 6,580,879 shares issued and outstanding at September 30, 2018 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) income Accumulated Other Comprehensive Income Loss Net Of Tax Treasury stock, at cost: 16,863 shares at June 30, 2019 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 Other real estate income 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 Notes And Debentures 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 gain on sale of investments Debt Securities Available For Sale Realized Gain Loss Net gains on sale of real estate Gains Losses On Sales Of Other Real Estate 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 Premium Expense 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 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 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 gains (losses) 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 Realized Investment Gains Losses Tax effect Other Comprehensive Income Loss Tax Net of tax amount Extinguishment Of Debt Gain Loss Net Of Tax Accretion of unrealized holding losses on securities transferred from available-for-sale to held-to-maturity Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred To Available For Sale 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 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), income 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 Reclassification of certain tax effects from accumulated other comprehensive income Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax Other comprehensive income 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 (10,800 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 Committed to be released ESOP shares Employee Stock Ownership Plan E S O P Shares Contributed To E S O P Proceeds from net of issuance cost Adjustments To Additional Paid In Capital Stock Issued Issuance Costs Represents amount associated with loan origination (the process when securing a mortgage for a piece of real property) or lease origination. Amount of amortization expense attributable to subordinated debt. The net cash inflow or outflow for the increase (decrease) associated with restricted stock. 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) expense Deferred Income Tax Expense Benefit ESOP expense Employee Stock Ownership Plan E S O P Compensation Expense Stock based compensation Share Based Compensation Amortization of premiums and discounts on investments securities, net Accretion Amortization Of Discounts And Premiums Investments 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 of investments securities available-for-sale Net gain on sale of real estate Gain Loss On Sale Of Property Plant Equipment 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 Increase (decrease) 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 And Maturity Of Available For Sale Securities 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 Mortgage Backed Securities M B S Net increase in loans Payments For Proceeds From Loans Receivable Net increase in restricted stock Increase Decrease In Restricted Stock Proceeds from sale of real estate Proceeds From Sale Of Property Plant And Equipment 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 increase (decrease) in deposits Increase Decrease In Savings Deposits Net increase in short-term borrowings Proceeds From Repayments Of Short Term Debt 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 Provided by Financing Activities Net Cash Provided By Used In Financing Activities Net Increase (Decrease) in Cash and Cash Equivalents Cash And Cash Equivalents Period Increase Decrease Cash and Cash Equivalents - Beginning 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 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] 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] Banking And Thrift [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] Basis of financial statement presentation Basis Of Accounting Policy Policy [Text Block] Loans Held-For-Sale Finance Loan And Lease Receivables Held For Sale Policy Treasury stock, policy. Treasury stock Treasury Stock Policy Policy [Text Block] Recently Issued Accounting Pronouncements 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 Schedule Of Fair Value Assets And Liabilities Measured On Recurring Basis Table [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 income 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 Nonvested Share Activity Table [Text Block] Gross proceeds from issuance of common stock. Gross proceeds of common stock Gross Proceeds From Issuance Of Common Stock Net proceeds of common stock Number of commercial real estate loans held for sale. Number of loans held for sale. Summary of significant accounting policies. Summary of significant accounting policies. Summary Of Significant Accounting Policies [Table] Summary Of Significant Accounting Policies [Table] Adjustments for New Accounting Pronouncements Adjustments For New Accounting Pronouncements [Axis] Type of Adoption 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] Number of commercial real estate loans held for sale Number Of Commercial Real Estate Loans Held For Sale Commercial real estate loan held for sale Loans Receivable Held For Sale Net Not Part Of Disposal Group Commercial Real Estate Number of loans held for sale Number Of Loans Held For Sale Operating lease, right-of-use assets Operating Lease Right Of Use Asset Operating lease, liabilities Operating Lease Liability 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] Net gains on sales of investments Net gains on sale of real estate Gain Loss On Disposition Of Assets 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 Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Schedule Of Antidilutive Securities Excluded From Computation Of Earnings Per Share [Table] Award Type Award Type [Axis] Equity Award Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Stock Option [Member] Stock Option [Member] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items] Restricted shares issued Stock Issued During Period Shares Employee Stock Ownership Plan Granted shares 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 share 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 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] Mortgage-Backed Securities [Member] Mortgage Backed Securities [Member] Marketable Securities [Line Items] Marketable Securities [Line Items] Proceeds from sale of securities available for sale Proceeds From Sale Of Available For Sale Securities Debt Gain on sale of securities available for sale Debt Securities Available For Sale Gain Loss 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 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 Held-to-Maturity, Amortized Cost: Held To Maturity Securities Debt Maturities Net Carrying Amount [Abstract] Within 1 year Held To Maturity Securities Debt Maturities Within One Year Net Carrying Amount After 5 years through ten years Held To Maturity Securities Debt Maturities After Five Through Ten Years Net Carrying Amount Over 10 years Held To Maturity Securities Debt Maturities After 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 The abstract of held to maturity mortgage backed securities. 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 Available-for-sale, Fair Value, Total Available For Sale Securities Held-to-Maturity, Fair Value: Held To Maturity Securities Debt Maturities Fair Value [Abstract] Within 1 year Held To Maturity Securities Debt Maturities Within One Year Fair Value After 5 years through ten years Held To Maturity Securities Debt Maturities Rolling Year Six Through Ten Fair Value Over 10 years Held To Maturity Securities Debt Maturities Rolling After Ten Years 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 Total investment securities, Fair Value Schedule Of Impaired Financing Receivable [Table] Schedule Of Impaired Financing Receivable [Table] Class of Financing Receivable, Type Financing Receivable Recorded Investment By Class Of Financing Receivable [Axis] Class of Financing Receivable, Type 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 real estate. Multi-Family Real Estate [Member] Commercial Multi Family Real Estate [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 Loans And Leases Receivable Gross Carrying Amount Deferred loan fees and costs, net Loans And Leases Receivable Deferred Income Allowance for loan losses Total loans receivable, net Increase (decrease) in provision for loan losses. Number of commercial real estate loans held for sale sold. Subsequent Event Type Subsequent Event Type [Axis] Subsequent Event Type Subsequent Event Type [Domain] Subsequent Event [Member] Subsequent Event [Member] One commercial real estate loan One Commercial Real Estate Loan [Member] One Commercial Real Estate Loan [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] Internal Credit Assessment Internal Credit Assessment [Axis] Internal Credit Assessment Internal Credit Assessment [Domain] Nonperforming Financing Receivable [Member] Nonperforming Financing Receivable [Member] Aggregate book balance, loans receivable Gain on sale of loans Loans And Leases Receivable Gain Loss On Sales Net Net proceeds from sale Proceeds From Sale Of Loans Held For Sale Increase (decrease) in provision for loan losses Increase Decrease In Provision For Loan Losses Number of commercial real estate loans held for sale sold Number Of Commercial Real Estate Loans Held For Sale Sold Construction and Development - Land Receivable [Member] Commercial Real Estate [Member] 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 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 Impaired Financing Receivable 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] Substandard [Member] Substandard [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 Financing Receivables, Period Past Due Financing Receivables Period Past Due [Axis] Financing Receivables, 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 Number of peer banks. Number of loans Financing Receivable Modifications Number Of Contracts2 Recorded Investment Financing Receivable Modifications Recorded Investment Allowance for loan losses Allowance For Loan And Lease Losses Loans Acquired Amount of loans charged down Financing Receivables Impaired Troubled Debt Restructuring Write Down Loans charged down, fair value Financing Receivable Allowance For Credit Losses Write Offs Number of peer banks Number Of Peer Banks Increase (decrease) in recorded Investment Increase Decrease In Finance Receivables 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] 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] Range Range [Axis] Range 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 The minimum amount of Tier 1 Common Capital for capital adequacy purposes divided by average assets as defined in the regulations. 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 Tier One Capital Equity Required For Capital Adequacy To Average Assets Tier 1 capital ratio Tier One Risk Based Capital Required For Capital Adequacy To Risk Weighted Assets Tier 1 Capital coservation 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 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 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 liability fair value amount offset. 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 Received Derivative Collateral Right To Reclaim Cash Gross Amounts Not Offset in the Statements of Financial Condition, Net Amount Derivative Fair Value Of Derivative Liability Amount Offset Against Collateral Amount of Gain (Loss) Recognized in OCI on Derivative Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax Amount of Gain 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 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] Fair Value, 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] U.S. Treasury Notes [Member] U S Treasury Securities [Member] Assets Investment securities available for sale, at fair value Derivative assets 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, Measurements, Nonrecurring [Member] Fair Value Measurements Nonrecurring [Member] Loans held for sale member. Loans Held For Sale Loans Held For Sale [Member] Impaired loans net. Impaired Loans Net [Member] Impaired Loans Net [Member] Weighted Average [Member] Weighted Average [Member] 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] 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 Loans with aggregate balance Impaired Loans with specific loan loss allowance 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 Loans held for sale (included in Other Assets) Loans Held For Sale Fair Value Disclosure 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 Derivatives (included in Other Liabilities) 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) income Total Accumulated Other Comprehensive Income Loss Net Of Tax Represents as a amortization of unrealized holding losses on securities available-for-sale transferred to held-to-maturity. 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 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 Other comprehensive (loss) income 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] 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 Share-based compensation 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 The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. 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 In Period Outstanding, end of year Exercisable, end of year Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number1 Nonvested, at end of year Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number1 The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. 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 Arrangements By Share Based Payment Award Options Forfeitures 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 Price1 Nonvested, at end of year Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value1 Weighted average remaining contractual term for fully vested and expected to vest options outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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 Vested And Expected To Vest Outstanding Weighted Average Remaining Contractual Term3 Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. 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 Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value2 Outstanding, end of year Exercisable, end of year Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value 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 Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Vested Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Forfeited/cancelled/expired Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period 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