Temporary Equity Disclosure [Abstract] Redeemable Preferred Stock Redeemable Preferred Stock [Text Block] The full disclosure for redeemable preferred stock. Investments, Debt and Equity Securities [Abstract] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Axis] Major Types of Debt and Equity Securities [Domain] Major Types of Debt and Equity Securities [Domain] U.S. Government US Government Agencies Debt Securities [Member] State and local government US States and Political Subdivisions Debt Securities [Member] Corporate debt Corporate Debt Securities [Member] Asset-backed securities Asset-backed Securities [Member] Mortgage-backed securities Collateralized Mortgage Backed Securities [Member] Commercial mortgage-backed securities Commercial Mortgage Backed Securities [Member] Collateralized mortgage obligations Collateralized Debt Obligations [Member] Debt securities Debt Securities [Member] Common Stock Common Stock [Member] Schedule of Available-for-sale Securities [Line Items] Schedule of Available-for-sale Securities [Line Items] Less than 12 months, number of issues Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year Greater than 12 months, number of issues Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year Number of Issues Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions Fair Value of Investments with Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] Less than 12 months, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Greater than 12 months, fair value Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Fair Value Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value Gross Unrealized Losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] Less than 12 months, unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Greater than 12 months, unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unrealized losses Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss Proceeds from sales of investments Proceeds from Sale of Available-for-sale Securities Deposits in trust accounts to meet requirements of state insurance departments Deposits, Held In Trust For State Insurance Departments Funds held in trust accounts to meet deposit requirements by state insurance departments. Deposits in trust accounts to meet collateral requirements with reinsurers Deposits, Held In Trust For Collateral Requirements Deposits, Held In Trust For Collateral Requirements Insurance [Abstract] Number of insurance company subsidiaries Statutory Accounting Practices, Number of Subsidiaries Statutory Accounting Practices, Number of Subsidiaries Debt Disclosure [Abstract] Debt Long-term Debt [Text Block] Earnings Per Share [Abstract] Schedule of Earnings Per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Income Tax Disclosure [Abstract] Operating Loss Carryforwards [Table] Operating Loss Carryforwards [Table] Income Tax Authority [Axis] Income Tax Authority [Axis] Income Tax Authority [Domain] Income Tax Authority [Domain] Domestic Tax Authority Domestic Tax Authority [Member] State and Local Jurisdiction State and Local Jurisdiction [Member] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Axis] Income Tax Authority, Name [Domain] Income Tax Authority, Name [Domain] Internal Revenue Service (IRS) Internal Revenue Service (IRS) [Member] Operating Loss Carryforwards [Line Items] Operating Loss Carryforwards [Line Items] Current income taxes receivable Income Taxes Receivable, Current Adjustment to deferred tax assets Effective Income Tax Rate Reconciliation, Net Operating Loss Write off Effective Income Tax Rate Reconciliation, Net Operating Loss Write off Decrease in net deferred tax assets Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Decrease In Deferred Tax Asset Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Decrease In Deferred Tax Asset Deferred income tax expense Tax Cuts and Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Tax Cuts and Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Deferred Tax Asset, Provisional Income Tax Expense Decrease in valuation allowance Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Decrease In Valuation Allowance Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Decrease In Valuation Allowance Deferred income tax benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Valuation Allowance, Provisional Income Tax Benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Provisional Income Tax Benefit Income tax benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Provisional Deferred Income Tax Benefit Tax Cuts And Jobs Act Of 2017, Incomplete Accounting, Change In Tax Rate, Provisional Deferred Income Tax Benefit Net operating loss carryforwards Operating Loss Carryforwards Net operating loss carryforwards subject to limitations Operating Loss Carryforwards, Subject to Limitations Operating Loss Carryforwards, Subject to Limitations Valuation allowance Deferred Tax Assets, Valuation Allowance Equity [Abstract] Accumulated Other Comprehensive Income (Loss) Comprehensive Income (Loss) Note [Text Block] Income Taxes Income Tax Disclosure [Text Block] Equity securities Equity Securities [Member] Gross realized gains Available-for-sale Securities, Gross Realized Gains Gross realized losses Available-for-sale Securities, Gross Realized Losses Total net realized investment gains Available-for-sale Securities, Gross Realized Gain (Loss) Reinsurance Disclosures [Abstract] Reinsurance Reinsurance [Text Block] Stockholders' Equity Note [Abstract] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Sale of Stock [Axis] Sale of Stock [Axis] Sale of Stock [Domain] Sale of Stock [Domain] Private Placement Private Placement [Member] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Share Repurchase Program [Domain] Share Repurchase Program [Domain] Stock Repurchase Program, February 2016 Stock Repurchase Program, February 2016 [Member] Stock Repurchase Program, February 2016 [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Common stock, shares issued (in shares) Common Stock, Shares, Issued Common equity issued Proceeds from Issuance of Private Placement Common equity issued (in shares) Sale of Stock, Number of Shares Issued in Transaction Price per share (in dollars per share) Shares Issued, Price Per Share Authorized amount of stock repurchase program (in shares) Stock Repurchase Program, Authorized Amount Stock repurchased during period, shares (in shares) Stock Repurchased and Retired During Period, Shares Stock repurchased during period, value Stock Repurchased and Retired During Period, Value Common stock voting rights, number of votes per share Common Stock, Voting Rights, Per Share Common Stock, Voting Rights, Per Share Accounting Policies [Abstract] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table] IPO IPO [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Chief Executive Officer Chief Executive Officer [Member] Subsidiary, Sale of Stock [Line Items] Subsidiary, Sale of Stock [Line Items] Number of business classes Number Of Business Classes Number Of Business Classes Number of states in which entity operates Number of States in which Entity Operates Stock issued during period (in shares) Stock Issued During Period, Shares, New Issues Ownership percentage Noncontrolling Interest, Ownership Percentage by Parent Unrecognized tax benefits Unrecognized Tax Benefits Income tax penalties and interest accrued Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued Unrealized investment gains (losses), net of tax Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Net of Tax Insurance Loss Reserves [Abstract] Short-duration Insurance Contracts, Historical Claims Duration [Table] Short-duration Insurance Contracts, Historical Claims Duration [Table] Insurance Product Line [Axis] Products and Services [Axis] Insurance Product Line [Domain] Products and Services [Domain] Commercial Lines Property and Casualty, Commercial Insurance Product Line [Member] Personal Lines Property and Casualty, Personal Insurance Product Line [Member] Short-duration Insurance Contracts, Historical Claims Duration [Line Items] Short-duration Insurance Contracts, Historical Claims Duration [Line Items] Year 1 Short-duration Insurance Contracts, Historical Claims Duration, Year One Year 2 Short-duration Insurance Contracts, Historical Claims Duration, Year Two Year 3 Short-duration Insurance Contracts, Historical Claims Duration, Year Three Year 4 Short-duration Insurance Contracts, Historical Claims Duration, Year Four Year 5 Short-duration Insurance Contracts, Historical Claims Duration, Year Five Year 6 Short-duration Insurance Contracts, Historical Claims Duration, Year Six Year 7 Short-duration Insurance Contracts, Historical Claims Duration, Year Seven Year 8 Short-duration Insurance Contracts, Historical Claims Duration, Year Eight Year 9 Short-duration Insurance Contracts, Historical Claims Duration, Year Nine Year 10, and onwards Short-duration Insurance Contracts, Historical Claims Duration, Year Ten and Thereafter Short-duration Insurance Contracts, Historical Claims Duration, Year Ten and Thereafter Amortized Cost Available-for-sale Securities, Debt Maturities, Amortized Cost Basis, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis Securities with contractual maturities Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis Commercial mortgage and asset backed Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis Total debt securities available for sale Available-for-sale Debt Securities, Amortized Cost Basis Estimated Fair Value Available-for-sale Securities, Debt Maturities, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value Due after one year through five years Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value Due after five years through ten years Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value Due after ten years Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value Securities with contractual maturities Available-for-sale Securities, Debt Maturities, Single Maturity Date Commercial mortgage and asset backed Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value Total debt securities, estimated fair value Available-for-sale Securities, Debt Securities Statement of Cash Flows [Abstract] Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Depletion and Amortization Amortization of bond premium and discount, net Amortization of Debt Discount (Premium) Net realized investment gains Gain (Loss) on Investments, Excluding Other than Temporary Impairments Other (gains) losses Deconsolidation, Gain (Loss), Cash, Amount Deconsolidation, Gain (Loss), Cash, Amount Restricted stock unit expenses Share-based Compensation Other Other Noncash Income (Expense) Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Premiums, agents' balances and other receivables Increase (Decrease) in Premiums Receivable Reinsurance recoverables Increase (Decrease) in Reinsurance Recoverable Prepaid reinsurance premiums Increase (Decrease) in Prepaid Reinsurance Premiums Deferred policy acquisition costs Increase (Decrease) in Deferred Policy Acquisition Costs Other assets Increase (Decrease) in Other Operating Assets Unpaid losses and loss adjustment expenses Increase (Decrease) in Liability for Claims and Claims Adjustment Expense Reserve Unearned premiums Increase (Decrease) in Unearned Premiums Reinsurance premiums payable Increase (Decrease) in Reinsurance Payables Accounts payable and other liabilities Increase (Decrease) in Accounts Payable and Accrued Liabilities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Cash Flows From Investing Activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Purchases of investments Payments to Acquire Investments Proceeds from maturities and redemptions of investments Proceeds from Maturities, Prepayments and Calls of Available-for-sale Securities Proceeds from sales of investments Proceeds From Sale Of Short-Term Investments And Available For Sale Securities Proceeds From Sale Of Short-Term Investments And Available For Sale Securities Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Deconsolidation of affiliate Deconsolidation of affiliate The increase (decrease) during the reporting period in an owned affiliate. 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, Continuing Operations [Abstract] Proceeds received from issuance of shares of common stock Proceeds from Issuance of Common Stock Repurchase of common stock Payments for Repurchase of Common Stock Repurchase of preferred stock Payments for Repurchase of Preferred Stock and Preference Stock Borrowings under debt arrangements Proceeds from Long-term Lines of Credit Repayment of borrowings under debt arrangements Repayments of Long-term Lines of Credit Dividends paid to preferred shareholders Payments of Ordinary Dividends, Preferred Stock and Preference Stock Payout of contingent consideration Payments of Contingent Consideration The cash outflow for payments of contingent consideration. Stock and debt issuance costs Payments of Debt Issuance Costs Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Net increase (decrease) in cash Cash and Cash Equivalents, Period Increase (Decrease) Cash at beginning of period Cash and Cash Equivalents, at Carrying Value Cash at end of period Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Information [Abstract] Interest paid Interest Paid Net income taxes paid Income Taxes Paid, Net Paid-in-kind dividends Dividends Payable Payable for securities - non cash item Payable for Securities, Noncash Payable for Securities, Noncash Statutory Financial Data, Risk-Based Capital and Dividend Restrictions Insurance Disclosure [Text Block] Segment Reporting [Abstract] Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Consolidation Items [Axis] Consolidation Items [Axis] Consolidation Items [Domain] Consolidation Items [Domain] Operating Segments Operating Segments [Member] Corporate & Other Corporate, Non-Segment [Member] Operating Segments and Corporate Non Segment Operating Segments And Corporate Non Segment [Member] Operating Segments And Corporate Non Segment [Member] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Commercial Lines Commercial Lines [Member] The commercial lines segment which offers coverage for property, liability, automobile and other miscellaneous coverage primarily to owner-operated small and mid-sized businesses, professional organizations and hospitality businesses such as restaurant, bars and taverns. Personal Lines Personal Lines [Member] Personal lines segment which offers coverage for low-value dwelling, wind-exposed homeowners and automobile. Included within personal insurance business are the following key products Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Gross written premiums Premiums Written, Gross Net written premiums Premiums Written, Net Net earned premiums Premiums Earned, Net Other income Other Income Total revenue Revenues Losses and loss adjustment expenses, net Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Policy acquisition costs Deferred Policy Acquisition Costs, Amortization Expense Operating expenses Operating Expenses Total expenses Benefits, Losses and Expenses Segment underwriting gain (loss) Operating Income (Loss) Investment income Net Investment Income Net realized investment gains Realized Investment Gains (Losses) Other gains (losses) Deconsolidation, Gain (Loss), Amount Interest expense Interest Expense Income (loss) before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest Deferred policy acquisition costs Deferred Policy Acquisition Costs Unearned premiums Unearned Premiums Loss and loss adjustment expense reserves Liability for Claims and Claims Adjustment Expense Condensed Financial Information of Parent Company Only Disclosure [Abstract] Condensed Balance Sheet Statement [Table] Condensed Balance Sheet Statement [Table] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Parent Company Parent Company [Member] Condensed Balance Sheet Statements, Captions [Line Items] Condensed Balance Sheet Statements, Captions [Line Items] Assets Assets [Abstract] Investment in subsidiaries Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Equity Securities Available-for-sale Securities, Equity Securities Cash Cash Due from subsidiaries Due from Related Parties Due from affiliate Due from Affiliates Other assets Other Assets Total assets Assets Liabilities and Shareholders' Equity Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Debt Long-term Debt Other liabilities Other Liabilities Total liabilities Liabilities Shareholders' equity: Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Common stock, no par value (100,000,000 shares authorized; 8,520,328 and 7,633,070 issued and outstanding, respectively) Common Stock, Value, Issued Accumulated deficit Retained Earnings (Accumulated Deficit) Accumulated other comprehensive income (loss) Accumulated Other Comprehensive Income (Loss), Net of Tax Total shareholders' equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and shareholders' equity Liabilities and Equity Schedule of Available-for-sale Securities Schedule of Available-for-sale Securities Reconciliation [Table Text Block] Schedule of Securities in Unrealized Loss Positions Schedule of Unrealized Loss on Investments [Table Text Block] Summary of Investment Income Investment Income [Table Text Block] Summary of Gross Realized Gains and Losses on Securities Realized Gain (Loss) on Investments [Table Text Block] Summary of Amortized Cost and Fair Value of Securities Investments Classified by Contractual Maturity Date [Table Text Block] Summary of Key Balances of the Affiliate Equity Method Investments [Table Text Block] Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Subordinated Debt Subordinated Debt [Member] Secured Debt Secured Debt [Member] Credit Facility [Axis] Credit Facility [Axis] Credit Facility [Domain] Credit Facility [Domain] Revolver Revolving Credit Facility [Member] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Term Note Term Note [Member] Debt instrument classified as term note. 2014 Term Note 2014 Term Note [Member] Debt instrument classified as 2014 term note. Debt Instrument [Line Items] Debt Instrument [Line Items] Debt Quarterly Financial Information Disclosure [Abstract] Net written premiums Net earned premiums Net investment income Net realized gains Losses and loss adjustment expenses, net Interest expense Income tax (benefit) expense Income Tax Expense (Benefit) Equity earnings (losses) in affiliates, net of tax Income (Loss) from Equity Method Investments Net income (loss) Net income (loss) allocable to common shareholders Net Income (Loss) Available to Common Stockholders, Basic Diluted earnings (loss) per common share (in dollars per share) Earnings Per Share, Diluted Combined ratio (percentage) Combined Ratio Effects of Reinsurance [Table] Effects of Reinsurance [Table] Property product line Property, Liability and Casualty Insurance Product Line [Member] Other insurance product line Other Insurance Product Line [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Reinsurance Policy, Type [Axis] Reinsurance Policy, Type [Axis] Reinsurance Policy [Domain] Reinsurance Policy [Domain] Workers Compensation and Casualty Clash Workers Compensation and Casualty Clash [Member] Workers Compensation and Casualty Clash [Member] Property Reinsurance Policy Property Reinsurance Policy [Member] Property Reinsurance Policy [Member] Multiple Line Reinsurance Policy Multiple Line Reinsurance Policy [Member] Multiple Line Reinsurance Policy [Member] Quota Share Reinsurance Agreement Quota Share Reinsurance Agreement [Member] Represents the quota share reinsurance agreement. Adverse Development Cover Reinsurance Agreement Adverse Development Cover Reinsurance Agreement [Member] Adverse Development Cover Reinsurance Agreement [Member] Quota Share Reinsurance Agreement, Other Arrangements Quota Share Reinsurance Agreement, Other Arrangements [Member] Arrangement with another reinsurer for the small number of equipment breakdown, employment practices liability and data compromise and identity recovery 2014 Assumption 2014 Assumption [Member] Represents the 2014 assumption. 2015 Assumption 2015 Assumption [Member] Represents the 2015 assumption. Insurance Fronting Arrangement Insurance Fronting Arrangement [Member] Insurance fronting arrangements with unaffiliated issuers. Counterparty Name [Axis] Counterparty Name [Axis] Counterparty Name [Domain] Counterparty Name [Domain] Citizens Property and Casualty Corporation Citizens Property and Casualty Corporation [Member] The entity Citizens Property and Casualty Corporation. Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Amount retained (excess of) Reinsurance Retention Policy, Amount Retained Reinsurance retention policy carried reserves threshold Reinsurance Retention Policy, Excess Retention, Carried Reserves, Threshold Reinsurance Retention Policy, Excess Retention, Carried Reserves, Threshold Unpaid losses and loss adjustment expenses Amount reinsured Reinsurance Retention Policy, Excess Retention, Amount Reinsured Contingent recovery (percentage) Contingent Recovery, Percentage Contingent Recovery, Percentage Payments for Reinsurance Payments for Reinsurance Insured property value Reinsurance Retention Policy, Insured Property Value Threshold Reinsurance Retention Policy, Insured Property Value Threshold Reinsurance agreement, quota share (percentage) Reinsurance Retention Policy, Reinsured Risk, Percentage Amount ceded Ceded Premiums Earned Assumed premiums written Assumed Premiums Written Return of premiums Return Of Premiums Written premiums the Company returned to the cedent for cancelled policies and policy adjustments. U.S. federal income tax rate Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, Amount [Abstract] Effective Income Tax Rate Reconciliation, Amount [Abstract] Income (loss) before income taxes Statutory U.S. federal income tax rate Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount State income taxes, net of federal benefit Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount Tax‑exempt investment income and dividend received deduction Effective Income Tax Rate Reconciliation, Tax Exempt Investment Income and Dividend Deduction, Amount Effective Income Tax Rate Reconciliation, Tax Exempt Investment Income and Dividend Deduction, Amount Nondeductible meals and entertainment Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Amount Valuation allowance on deferred tax assets Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount Net operating loss write-off Change in federal tax rate Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount Other Effective Income Tax Rate Reconciliation, Other Adjustments, Amount Total income tax expense (benefit) Effective tax rate Effective Income Tax Rate Reconciliation, Percent Variable Rate Period [Axis] Variable Rate Period [Axis] Variable Rate Period [Axis] Variable Rate Period [Domain] Variable Rate Period [Domain] [Domain] for Variable Rate Period [Axis] Period One Period One [Member] Period One [Member] Period Two Period Two [Member] Period Two [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] Swap rate Federal Funds Effective Swap Rate [Member] Private placement, subordinated note Private Placement Subordinated Note [Member] Private Placement Subordinated Note [Member] Face amount of debt Debt Instrument, Face Amount Bearing fixed annual interest rate (percentage) Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate Derivative, basis spread on variable rate Derivative, Basis Spread on Variable Rate Debt issuance costs Debt Issuance Costs, Gross Number of debt instruments Debt Instrument, Number of Instruments Debt Instrument, Number of Instruments Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Disclosure of Compensation Related Costs, Share-based Payments [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 [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] 2015 Omnibus Incentive Plan 2015 Omnibus Incentive Plan [Member] Represents the 2015 Omnibus Incentive Plan. Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] 2018 Vesting Share-based Compensation Award, Tranche Two [Member] 2019 Vesting Share-based Compensation Award, Tranche Three [Member] 2020 Vesting Share-based Compensation Award, Tranche Four [Member] Share-based Compensation Award, Tranche Four [Member] 2021 Vesting Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Award, Tranche Five [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Scheduled vesting - RSUs (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Valuation and Qualifying Accounts [Abstract] Valuation and Qualifying Accounts Disclosure [Table] Valuation and Qualifying Accounts Disclosure [Table] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves Type [Axis] Valuation Allowances and Reserves [Domain] Valuation Allowances and Reserves [Domain] Valuation for Deferred Tax Assets Valuation Allowance of Deferred Tax Assets [Member] Valuation and Qualifying Accounts Disclosure [Line Items] Valuation and Qualifying Accounts Disclosure [Line Items] Movement in Valuation Allowances and Reserves [Roll Forward] Movement in Valuation Allowances and Reserves [Roll Forward] Balance at Beginning of Period Valuation Allowances and Reserves, Balance Charged to Expense Valuation Allowances and Reserves, Additions for Charges to Cost and Expense Decrease to Other Comprehensive Income Valuation Allowances and Reserves, Additions for Charges to Other Accounts Deductions from Allowance Account Valuation Allowances and Reserves, Deductions Balance at End of Period Commitments and Contingencies Disclosure [Abstract] Schedule of Future Minimum Rental Payments for Operating Leases Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] Schedule V - Valuation and Qualifying Accounts Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] Statement of Financial Position [Abstract] Debt securities, at fair value (amortized cost of $137,004 and $113,915, respectively) Equity securities, at fair value (cost of $8,629 and $4,283, respectively) Short-term investments, at fair value Short-term Investments Total investments Investments Premiums and agents' balances receivable, net Premiums Receivable, Net Receivable from Affiliate Reinsurance recoverables on unpaid losses Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Reinsurance recoverables on paid losses Reinsurance Recoverable for Paid Claims and Claims Adjustments Prepaid reinsurance premiums Ceded unearned premiums Premium paid, but not yet earned, to reinsurers under reinsurance treaties to transfer a portion of the insurer's risk. Total assets Reinsurance premiums payable Reinsurance Payable Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Commitment and contingencies Commitments and Contingencies Shareholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Common stock, no par value (100,000,000 shares authorized; 8,520,328 and 7,633,070 issued and outstanding, respectively) Statement of Comprehensive Income [Abstract] Net income (loss) Other comprehensive income (loss), net of tax: Other Comprehensive Income (Loss), Net of Tax [Abstract] Unrealized investment gains (losses): Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Tax, [Abstract] Unrealized investment gains (losses) during the period Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax Income tax expense (benefit) Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax Unrealized investment gains (losses), net of tax Less: reclassification adjustments to: Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] Net realized investment gains included in net income (loss) Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax Income tax expense Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax Total reclassifications included in net income (loss), net of tax Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax Other comprehensive income (loss) Other Comprehensive Income (Loss), Net of Tax Total comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Less comprehensive income (loss) attributable to noncontrolling interest Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest Comprehensive income (loss) attributable to Conifer Comprehensive Income (Loss), Net of Tax, Attributable to Parent Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Gross Written Premiums Gross Written Premiums [Member] Represents gross written premiums. Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Geographic Concentration Risk Geographic Concentration Risk [Member] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Florida, Michigan, Texas and Pennsylvania Florida, Michigan, Texas and Pennsylvania [Member] Represents the states Florida, Michigan, Texas and Pennsylvania. Number of reportable segments Number of Reportable Segments Concentration percentage Concentration Risk, Percentage Earnings Per Share Earnings Per Share [Text Block] Current tax expense (benefit) Current Income Tax Expense (Benefit) Deferred tax expense (benefit) Deferred Income Tax Expense (Benefit) Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Unpaid Losses and Loss Adjustment Expenses Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Summary of the Effects of Reinsurance Effects of Reinsurance [Table Text Block] Fair Value Disclosures [Abstract] Fair Value Measurements Fair Value, Measurement Inputs, Disclosure [Text Block] Statutory Accounting Practices [Table] Statutory Accounting Practices [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Conifer Conifer Insurance [Member] Conifer Insurance [Member] American Colonial American Colonial [Member] American Colonial [Member] White Pine White Pines [Member] White Pines [Member] Statutory Accounting Practices [Line Items] Statutory Accounting Practices [Line Items] Statutory capital and surplus Statutory Accounting Practices, Statutory Capital and Surplus, Balance RBC authorized control level Statutory Accounting Practices, Risk Based Capital Requirements, Authorized Control Level Statutory Accounting Practices, Risk Based Capital Requirements, Authorized Control Level Statutory net income (loss) Statutory Accounting Practices, Statutory Net Income Amount RBC % (percentage) Statutory Accounting Practices, Risk Based Capital, Percentage Statutory Accounting Practices, Risk Based Capital, Percentage Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Common stock, shares authorized (in shares) Common Stock, Shares Authorized Fixed maturity securities, amortized cost Equity securities, amortized cost Available-for-sale Equity Securities, Amortized Cost Basis Temporary Equity, by Class of Stock [Table] Temporary Equity, by Class of Stock [Table] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Redeemable Preferred Stock Redeemable Preferred Stock [Member] Temporary Equity [Line Items] Temporary Equity [Line Items] Shares outstanding Temporary Equity, Shares Outstanding Liquidation event, percentage of holders with consent (more than) Holders Of The Preferred Stock, Liquidation Event, Percentage Percentage of holders of the preferred stock who consented to change the definition of a liquidation event. Redemption price (in dollars per share) Temporary Equity, Redemption Price Per Share Number of shares repurchased during the period Temporary Equity, Stock Repurchased During Period, Shares Temporary Equity, Stock Repurchased During Period, Shares Stock repurchased during period (percentage) Temporary Equity, Stock Repurchased During Period, Percentage The percent of preferred stock holders which agreed to reinvest their cash proceeds from the sale of their preferred stock into The Company's common stock offered in the Company's IPO. Payments of dividends Payments of Dividends Proceeds from issuance of common stock Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) [Table] Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] AOCI Attributable to Parent, Net of Tax [Roll Forward] AOCI Attributable to Parent, Net of Tax [Roll Forward] Balance at beginning of period Other comprehensive income (loss) before reclassifications Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Less: amounts reclassified from accumulated other comprehensive income (loss) Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Balance at end of period Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Liability for Claims and Claims Adjustment Expense [Table] Liability for Claims and Claims Adjustment Expense [Table] Catastrophic Event [Axis] Catastrophic Event [Axis] Catastrophic Event [Domain] Catastrophic Event [Domain] Hurricane Hurricane [Member] Catastrophe Reinsurance Treaty Catastrophe Reinsurance Treaty [Member] Catastrophe Reinsurance Treaty [Member] Personal Automobile Line Personal Automobile Line [Member] Product line consisting of insurance policies issued for personal automobile lines. Commercial Automobile Line Commercial Automobile Line [Member] Product line consisting of insurance policies issued for commercial automobile. Wind-exposed Homeowners Wind-exposed Homeowners [Member] Wind-exposed homeowners (previously known as Specialty homeowners) — provides coverage in niche homeowners markets that have special risk characteristics, including coastal exposure to wind. Commercial Multi-peril Commercial Multi-peril [Member] Product line consisting of insurance policies issued for commercial multi-peril lines. Florida Homeowners Florida Homeowners [Member] Florida Homeowners [Member] Liability for Claims and Claims Adjustment Expense [Line Items] Liability for Claims and Claims Adjustment Expense [Line Items] Prior year adjustments Prior Year Claims and Claims Adjustment Expense Ceded Premiums Payable Ceded Premiums Payable Catastrophe losses incurred (percentage) Loss From Catastrophes, Percent Loss From Catastrophes, Percent Offset amount Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claim and Claims, Offset Amount Supplemental Information For Property Casualty Insurance Underwriters Prior Year Claim and Claims, Offset Amount Debt securities: Available-for-sale Debt Securities, Amortized Cost Basis [Abstract] Fixed maturity securities, Gross Unrealized Gain Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax Fixed maturity securities, Gross Unrealized Loss Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax Equity securities: Available-for-sale Equity Securities, Amortized Cost Basis [Abstract] Equity securities, Amortized Cost Equity securities, Gross Unrealized Gain Available-for-sale Equity Securities, Accumulated Gross Unrealized Gain, before Tax Equity securities, Gross Unrealized Loss Available-for-sale Equity Securities, Accumulated Gross Unrealized Loss, before Tax Equity securities, Estimated Fair Value Securities, Cost or Amortized Cost Available-for-sale Securities, Amortized Cost Basis Securities, Gross Unrealized Gain Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Securities, Gross Unrealized Loss Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Securities, Estimated Fair Value Available-for-sale Securities Income Statement [Abstract] Revenue Revenues [Abstract] Gross earned premiums Direct and Assumed Premiums Earned Direct and Assumed Premiums Earned Ceded earned premiums Net earned premiums Expenses Benefits, Losses and Expenses [Abstract] Income tax expense (benefit) Less net loss attributable to noncontrolling interest Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Conifer Net Income (Loss) Attributable to Parent Earnings (loss) per common share, basic and diluted (in dollars per share) Earnings Per Share, Basic and Diluted Weighted average common shares outstanding, basic and diluted (in shares) Weighted Average Number of Shares Outstanding, Basic and Diluted Basis of Presentation and Management Representation Basis of Accounting, Policy [Policy Text Block] Affiliate Consolidation, Policy [Policy Text Block] Use of Estimates Use of Estimates, Policy [Policy Text Block] Cash and Short-term Investments Cash and Cash Equivalents, Policy [Policy Text Block] Investment Securities and Other-than-temporary Impairments Marketable Securities, Policy [Policy Text Block] Recognition of Premium Revenues Insurance Premiums Revenue Recognition, Policy [Policy Text Block] Reinsurance Reinsurance Accounting Policy [Policy Text Block] Deferred Policy Acquisition Costs Deferred Policy Acquisition Costs, Policy [Policy Text Block] Unpaid Losses and Loss Adjustment Expenses Unpaid Policy Claims and Claims Adjustment Expense, Policy [Policy Text Block] Income Taxes Income Tax, Policy [Policy Text Block] Other Income Other Income, Policy [Policy Text Block] Other Income, Policy [Policy Text Block] Operating Expenses Operating Expenses, Policy [Policy Text Block] Operating Expenses, Policy [Policy Text Block] Recently Issued Accounting Guidance New Accounting Pronouncements, Policy [Policy Text Block] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Gross reserves - beginning of period Less: reinsurance recoverables on unpaid losses Net reserves - beginning of period Liability for Unpaid Claims and Claims Adjustment Expense, Net Add: incurred losses and loss adjustment expenses, net of reinsurance Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Current period Current Year Claims and Claims Adjustment Expense Prior period Net Loss and loss adjustment expenses Deduct: loss and loss adjustment expense payments, net of reinsurance Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Current period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Prior period Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Total net loss and loss adjustment expense payments Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Net reserves - end of period Plus: reinsurance recoverables on unpaid losses Gross reserves - end of period Shareholders' Equity Stockholders' Equity Note Disclosure [Text Block] Net income (loss) attributable to Conifer Preferred stock dividends Dividends, Preferred Stock, Cash Paid-in-kind dividends Dividends, Common Stock, Paid-in-kind Net income (loss) allocable to common shareholders Earnings (loss) per share allocable to common, basic and diluted (in dollars per share) Net Earned Premium Net Earned Premiums [Member] Represents net premiums earned. Schedule of Information by Reportable Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Related Party Transactions [Abstract] Related Party Transactions Related Party Transactions Disclosure [Text Block] Summary of Assets and Liabilities Measured at Fair Value Fair Value Measurements, Recurring and Nonrecurring [Table Text Block] Schedule of the Changes in the Reserves for Losses and Loss Adjustment Expense Schedule of Liability for Unpaid Claims and Claims Adjustment Expense [Table Text Block] Short-duration Insurance Contracts, Claims Development Short-duration Insurance Contracts, Claims Development [Table Text Block] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table Text Block] Loss Duration Schedule Short-duration Insurance Contracts, Schedule of Historical Claims Duration [Table Text Block] Schedule of Income Tax Expense (Benefit) Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] Summary of Income Tax Expense (Benefit) Reconciliation Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] Schedule of Deferred Tax Assets and Liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] Fair Value, Concentration of Risk [Table] Fair Value, Concentration of Risk [Table] Fair Value, Hierarchy [Axis] Fair Value, Hierarchy [Axis] Fair Value Hierarchy [Domain] Fair Value Hierarchy [Domain] Quoted Prices in Active Markets for Identical Assets (Level 1) Fair Value, Inputs, Level 1 [Member] Significant Other Observable Inputs (Level 2) Fair Value, Inputs, Level 2 [Member] Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] Fair Value, Concentration of Risk, Financial Statement Captions [Line Items] Percentage of the fair value of the total investment portfolio (percentage) Investment Portfolio Percentage Represents a percentage of the investment portfolio. Summary of Statutory Basis Information Statutory Accounting Practices Disclosure [Table Text Block] Investment Income [Table] Investment Income [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Cash and short-term investments Cash and Cash Equivalents [Member] Net Investment Income [Line Items] Net Investment Income [Line Items] Investment income Gross Investment Income, Operating Investment expenses Investment Income, Investment Expense Net investment income Written premiums: Premiums Written, Net [Abstract] Direct Direct Premiums Written Assumed Ceded Ceded Premiums Written Net written premiums Earned premiums: Premiums Earned, Net [Abstract] Direct Direct Premiums Earned Assumed Assumed Premiums Earned Ceded Loss and loss adjustment expenses: Direct Direct Claims And Claims Adjustment Expense Amount of expense for direct claims incurred. Assumed Assumed Claims And Claims Adjustment Expense Amount of expense for assumed claims incurred. Ceded Ceded Claims And Claims Adjustment Expense Amount of expense for ceded claims incurred. Reinsurance reinstatement cost Reinsurance Recoverables, Including Reinsurance Premium Paid Schedule of Nonvested Restricted Stock Units Activity Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Vesting Schedule for Restricted Stock Units Share-based Compensation Arrangements by Share-based Payment Award, Restricted Stock Units, Vested and Expected to Vest [Table Text Block] Schedule II - Condensed Financial Information of Registrant - Statement of Cash Flows Condensed Financial Information of Parent Company Only Disclosure [Text Block] Retirement Benefits [Abstract] Maximum employee contribution amount, percentage of gross compensation Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent Employee matching contribution, percentage of employee gross compensation Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay Plan expense Defined Contribution Plan, Cost Number of Units Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward] Beginning period, outstanding (in shares) Units granted (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Units vested (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Units forfeited (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Ending period, outstanding (in shares) Weighted Average Grant-Date Fair Value Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Beginning period, outstanding (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Units granted (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Units vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Units forfeited (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Ending period, outstanding (in dollars per share) Schedule II - Condensed Financial Information of Registrant - Balance Sheets Stock-based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Unpaid losses and ALAE, net of reinsurance Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net ULAE Expense Short-duration Insurance Contracts, Liability for Unpaid Claims and Claims Adjustment Expense, Accumulated Unallocated Claim Adjustment Expense Segment Information Segment Reporting Disclosure [Text Block] Number of shares authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Vesting period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Number of shares issued upon conversion, per share Conversion of Stock, Number of Shares Issued Upon Conversion Conversion of Stock, Number of Shares Issued Upon Conversion Stock issued during period Stock granted, value Stock Granted, Value, Share-based Compensation, Gross Compensation expense Allocated Share-based Compensation Expense Total compensation cost not yet recognized Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized Ownership percentage Equity Method Investment, Ownership Percentage Total assets Equity Method Investment, Summarized Financial Information, Assets Total liabilities Equity Method Investment, Summarized Financial Information, Liabilities Total shareholder's equity Equity Method Investment Summarized Financial Information, Equity Total Revenue Equity Method Investment, Summarized Financial Information, Revenue Net Income Equity Method Investment, Summarized Financial Information, Net Income (Loss) Short-duration Insurance Contracts, Claims Development [Table] Short-duration Insurance Contracts, Claims Development [Table] Short-duration Insurance Contracts, Accident Year [Axis] Short-duration Insurance Contracts, Accident Year [Axis] Short-duration Insurance Contracts, Accident Year [Domain] Short-duration Insurance Contracts, Accident Year [Domain] Accident Year 2009 Short-duration Insurance Contracts, Accident Year 2009 [Member] Accident Year 2010 Short-duration Insurance Contracts, Accident Year 2010 [Member] Accident Year 2011 Short-duration Insurance Contracts, Accident Year 2011 [Member] Accident Year 2012 Short-duration Insurance Contracts, Accident Year 2012 [Member] Accident Year 2013 Short-duration Insurance Contracts, Accident Year 2013 [Member] Accident Year 2014 Short-duration Insurance Contracts, Accident Year 2014 [Member] Accident Year 2015 Short-duration Insurance Contracts, Accident Year 2015 [Member] Accident Year 2016 Short-duration Insurance Contracts, Accident Year 2016 [Member] Accident Year 2017 Short-duration Insurance Contracts, Accident Year 2017 [Member] Claims Development [Line Items] Claims Development [Line Items] Incurred Short-duration Insurance Contracts, Incurred Claims and Allocated Claim Adjustment Expense, Net Total IBNR Short-duration Insurance Contracts, Incurred but Not Reported (IBNR) Claims Liability, Net Cumulative number of reported claims Short-duration Insurance Contracts, Number of Reported Claims Cumulative Paid Short-duration Insurance Contracts, Cumulative Paid Claims and Allocated Claim Adjustment Expense, Net Unpaid losses and ALAE - years 2009 through 2017 Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Excluding Not Separately Presented Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Excluding Not Separately Presented Unpaid losses and ALAE - prior to 2009 Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net, Not Separately Presented Unpaid ADC Short-Duration Insurance Contracts, Liability For Unpaid Claims And Claim Adjustment Expense, Adverse Development Cover Reinsurance Short-Duration Insurance Contracts, Liability For Unpaid Claims And Claim Adjustment Expense, Adverse Development Cover Reinsurance Unpaid losses and ALAE, net of reinsurance Condensed Cash Flow Statement [Table] Condensed Cash Flow Statement [Table] Condensed Cash Flow Statements, Captions [Line Items] Condensed Cash Flow Statements, Captions [Line Items] Dividends received from subsidiaries during period Cash Dividends Paid to Parent Company Statement of Stockholders' Equity [Abstract] Statement [Table] Statement [Table] Pre IPO Pre IPO [Member] Transaction before the first sale of stock by a private company to the public. Former Preferred Stockholders Former Preferred Stockholders [Member] Represents former preferred stockholders. Preferred Stock Preferred Stock [Member] Retained Earnings (Accumulated deficit) Retained Earnings [Member] Total Conifer Holdings Shareholders' Equity Parent [Member] Noncontrolling Interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Redeemable preferred stock, beginning balance (in shares) Redeemable preferred stock, beginning balance Temporary Equity, Carrying Amount, Attributable to Parent Reclassification of redeemable preferred stock to permanent equity (in shares) Reclassification of Redeemable Preferred Stock to Permanent Equity (in shares) Amount of shares reclassified from temporary to permanent equity during the period. Reclassification of redeemable preferred stock to permanent equity Reclassifications of Temporary to Permanent Equity Redeemable preferred stock, ending balance (in shares) Redeemable preferred stock, ending balance Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Balance (in shares) Shares, Outstanding Issuance of stock (in shares) Issuance of stock Stock Issued During Period, Value, New Issues Paid-in-kind dividends Dividends, Paid-in-kind Cash dividends paid on preferred stock Reclassification of redeemable preferred stock to permanent equity (in shares) Reclassification of redeemable preferred stock to permanent equity IPO expenses Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Repurchase of preferred stock (in shares) Repurchase of preferred stock RSU expense (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross RSU expense Stock Issued During Period, Value, Restricted Stock Award, Gross Deconsolidation of affiliate RSU expense, net (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures RSU expense, net Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Other comprehensive income (loss) Balance (in shares) Other Commitments [Table] Other Commitments [Table] Other Commitments [Axis] Other Commitments [Axis] Other Commitments [Domain] Other Commitments [Domain] Agreement to Design and Implement New Systems Agreement to Design and Implement New Systems [Member] Agreement to Design and Implement New Systems [Member] Other Commitments [Line Items] Other Commitments [Line Items] Minimum monthly payment Other Commitment, Minimum Monthly Payment Other Commitment, Minimum Monthly Payment Number of lease renewal options Lessee Leasing Arrangements, Operating Leases, Number of Lease Renewals Lessee Leasing Arrangements, Operating Leases, Number of Lease Renewals Lease renewal term Lessee, Operating Lease, Renewal Term Rent expense under operating leases Operating Leases, Rent Expense, Net Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] 2018 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2019 Operating Leases, Future Minimum Payments, Due in Two Years 2020 Operating Leases, Future Minimum Payments, Due in Three Years 2021 Operating Leases, Future Minimum Payments, Due in Four Years 2022 Operating Leases, Future Minimum Payments, Due in Five Years 2023 and thereafter Operating Leases, Future Minimum Payments, Due Thereafter Total future minimum rental payments Operating Leases, Future Minimum Payments Due Summary of Quarterly Financial Results Quarterly Financial Information [Table Text Block] Cash Flows from Operating Activities Net Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net income (loss) to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Depreciation and amortization Depreciation, Amortization and Accretion, Net Deferred income taxes Deferred Income Taxes and Tax Credits Equity in undistributed (income) loss of subsidiaries Income (Loss) from Subsidiaries, Net of Tax Incentive awards expenses - vesting of RSUs Due from subsidiaries Increase (Decrease) in Due from Related Parties Due from affiliates Increase (Decrease) Due from Affiliates Other assets Other liabilities Increase (Decrease) in Other Operating Liabilities Cash Flows From Investing Activities Net Cash Provided by (Used in) Investing Activities [Abstract] Contributions to subsidiaries Payments to Acquire Businesses and Interest in Affiliates Dividends received from subsidiaries Purchases of investments Payments for (Proceeds from) Investments Purchases of property and equipment Cash Flows From Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Repurchase of preferred stock Repayment of borrowings under debt arrangements Dividends paid to preferred shareholders Stock and debt issuance costs Supplemental Disclosure of Cash Flow Information: Supplemental Cash Flow Elements [Abstract] Interest paid Non-cash dividend received from subsidiaries Other Significant Noncash Transaction, Dividend Received from Subsidiary Other Significant Noncash Transaction, Dividend Received from Subsidiary Deferred Policy Acquisition Costs Disclosures [Abstract] Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward] Balance at beginning of period Deferred policy acquisition costs Deferred Policy Acquisition Costs, Additions Amortization of policy acquisition costs Net change Deferred Policy Acquisition Costs, Period Increase (Decrease) Balance at end of period Deferred tax assets: Components of Deferred Tax Assets [Abstract] Discounted unpaid losses and loss adjustment expenses Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Loss Reserves Unearned premiums Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Unearned Premiums Reserve Net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, Domestic State net operating loss carryforwards Deferred Tax Assets, Operating Loss Carryforwards, State and Local Other Deferred Tax Assets, Other Gross deferred tax assets Deferred Tax Assets, Gross Less valuation allowance Total deferred tax assets, net of allowance Deferred Tax Assets, Net of Valuation Allowance Deferred tax liabilities: Components of Deferred Tax Liabilities [Abstract] Investment basis difference Deferred Tax Liabilities, Investments Unrealized gains on investments Deferred Tax Liabilities, Unrealized Gains (Losses) on Investments Deferred Tax Liabilities, Unrealized Gains (Losses) on Investments Deferred policy acquisition costs Deferred Tax Liabilities, Deferred Expense, Deferred Policy Acquisition Cost Intangible assets Deferred Tax Liabilities, Intangible Assets Property and equipment Deferred Tax Liabilities, Property, Plant and Equipment Other Deferred Tax Liabilities, Other Total deferred tax liabilities Deferred Tax Liabilities, Gross Net deferred tax liability Deferred Tax Liabilities, Net Fair Value Measurements, Recurring and Nonrecurring [Table] Fair Value Measurements, Recurring and Nonrecurring [Table] Partnership Interest Partnership Interest [Member] Significant Unobservable Inputs (Level 3) Fair Value, Inputs, Level 3 [Member] Eligible Item or Group for Fair Value Option [Axis] Financial Instrument [Axis] Fair Value, Option, Eligible Item or Group [Domain] Financial Instruments [Domain] Debt Senior Debt Obligations [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] Short-term investments Total investments measured at fair value Investments, Fair Value Disclosure Total investments measured at NAV Alternative Investment, Fair Value Disclosure Total assets measured at fair value Assets, Fair Value Disclosure Debt Debt Instrument, Fair Value Disclosure Total Liabilities measured at fair value Financial and Nonfinancial Liabilities, Fair Value Disclosure Summary of Deferred Policy Acquisition Costs Deferred Policy Acquisition Costs [Table Text Block] Schedule of Outstanding Senior Debt Schedule of Debt [Table Text Block] Quarterly Financial Data (Unaudited) Quarterly Financial Information [Text Block] Deferred Policy Acquisition Costs Deferred Policy Acquisition Costs [Text Block] Schedule II - Condensed Financial Information of Registrant - Statements of Comprehensive Income (Loss) Condensed Statement of Comprehensive Income [Table] Condensed Statement of Comprehensive Income [Table] Condensed Statement of Income Captions [Line Items] Condensed Statement of Income Captions [Line Items] Management fees from subsidiaries Management Fees Revenue Income (loss) before equity in earnings (losses) of subsidiaries and income tax benefit Income (Loss) from Continuing Operations, before Income Taxes and Income (Loss) From Subsidiaries Income (Loss) from Continuing Operations, before Income Taxes and Income (Loss) From Subsidiaries Income (loss) before equity earnings (losses) of subsidiaries Income (Loss) from Continuing Operations, before Income (Loss) From Subsidiaries, Net of Tax Income (Loss) from Continuing Operations, before Income (Loss) From Subsidiaries, Net of Tax Equity earnings (losses) in subsidiaries Less net loss attributable to noncontrolling interest Other Comprehensive Income Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] Equity in other comprehensive income (loss) of subsidiaries Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Employee Benefit Plans Defined Contribution Plan Disclosures [Table Text Block] Document And Entity Information Entity Registrant Name Entity Central Index Key Trading Symbol Current Fiscal Year End Date Entity Filer Category Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Common Stock, Shares Outstanding Entity Public Float Entity Public Float Document Type Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Amendment Flag