Earnings Per Share [Abstract] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Securities of subsidiaries Securities of subsidiaries [Member] Securities of subsidiaries [Member] Adjustments to income relating to exchangeable interests, net of tax Adjustments to income relating to exchangeable interests, net of tax [Member] Adjustments to income relating to exchangeable interests, net of tax [Member] Class of Stock [Axis] Class of Stock [Axis] Class of Stock [Domain] Class of Stock [Domain] Common Stock - Class A Common Class A [Member] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] Net income (loss) from continuing operations Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income from continuing operations attributable to non-controlling interests Income (Loss) from Continuing Operations, Net of Tax, Attributable to Noncontrolling Interest Net income allocated to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Net income (loss) from continuing operations attributable to Tiptree Inc. Class A common shares Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net income (loss) from discontinued operations attributable to non-controlling interests Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Noncontrolling Interest Net income (loss) from discontinued operations attributable to Tiptree Inc. Class A common shares Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent Net income (loss) attributable to Tiptree Inc. Class A common shares - basic Net Income (Loss) Available to Common Stockholders, Basic Dilutive Securities, Effect on Basic Earnings Per Share Dilutive Securities, Effect on Basic Earnings Per Share Net income (loss) attributable to Tiptree Inc. Class A common shares - diluted Net Income (Loss) Available to Common Stockholders, Diluted Weighted Average Number of Shares Outstanding, Basic Weighted Average Number of Shares Outstanding, Basic [Abstract] Weighted average number of shares of Common Stock outstanding - basic Weighted Average Number of Shares Outstanding, Basic Weighted average number of incremental shares of Common Stock issuable from exchangeable interests and contingent considerations Incremental Common Shares Attributable to Dilutive Effect of Equity Unit Purchase Agreements Weighted Average Number of Shares Outstanding, Diluted Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average number of shares of Common Stock outstanding - diluted Weighted Average Number of Shares Outstanding, Diluted Basic: Earnings Per Share, Basic [Abstract] Basic, continuing operations, net Income (Loss) from Continuing Operations, Per Basic Share Basic, discontinued operations, net Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share Basic earnings per share Earnings Per Share, Basic Diluted: Earnings Per Share, Diluted [Abstract] Diluted, continuing operations, net Income (Loss) from Continuing Operations, Per Diluted Share Diluted, discontinued operations, net Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Diluted Share Diluted earnings per share Earnings Per Share, Diluted Disclosure of Compensation Related Costs, Share-based Payments [Abstract] Summary of Changes to Issuances under 2017 Equity Plan Share-based Compensation, Activity [Table Text Block] Summary of Changes to Issuances of RSUs under the 2017 Equity Plan Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of Changes to Issuances of Subsidiary RSU's under Subsidiary Incentive Plan Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] Schedule of Assumptions Used to Estimate the Fair Values of the Stock Options Granted Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Schedule of Stock-based Compensation Expense and Related Income Tax Benefit Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] Schedule of Additional Information on Total Non-vested Stock-based Compensation Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] Receivables [Abstract] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Subsequent Events [Abstract] Subsequent Event [Table] Subsequent Event [Table] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Subsequent Event Subsequent Event [Member] Subsequent Event [Line Items] Subsequent Event [Line Items] Dividends declared per share (in usd per share) Common Stock, Dividends, Per Share, Declared Revenue Recognition [Abstract] Disaggregation of Revenue from Contracts with Customers by Product Type Disaggregation of Revenue [Table Text Block] Schedule of Activity in Deferred Assets and Liabilities Related to Revenue from Contracts with Customers Contract with Customer, Asset and Liability [Table Text Block] Equity [Abstract] Reclassification out of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Income Statement Location [Axis] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Interest Expense Interest Expense [Member] Provision for income taxes provision for income taxes [Member] provision for income taxes [Member] Equity Components [Axis] Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Available for sale securities Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] Interest rate swaps Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Amount reclassified from AOCI Reclassification out of Accumulated Other Comprehensive Income [Member] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Unrealized gains (losses) on available for sale securities Gain (Loss) on Investments, Excluding Other than Temporary Impairments Unrealized gains (losses) on interest rate swaps Interest Income (Expense), Net Reclassification of AOCI - interest rate swaps Discontinued Operation, Gain (Loss) from Disposal of Discontinued Operation, before Income Tax Related tax (expense) benefit Income Tax Expense (Benefit) Net income (loss) from continuing operations Derivative Instruments, Income Statement Location of Gain (Loss) Reclassified from Accumulated OCI Derivative Instruments, Income Statement Location of Gain (Loss) Reclassified from Accumulated OCI Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Vesting [Axis] Vesting [Axis] Vesting [Domain] Vesting [Domain] Three year vesting period, Starting April 2017 Three year vesting period, Starting February 2018 [Member] Three year vesting period, Starting February 2018 Amount vesting in February 2020 Amount vesting in February 2021 [Member] Amount vesting in February 2021 RSU’s and restricted stock vesting - first tranche Share-based Compensation Award, Tranche One [Member] RSU’s and restricted stock vesting - second tranche Share-based Compensation Award, Tranche Two [Member] RSU’s and restricted stock vesting - third tranche Share-based Compensation Award, Tranche Three [Member] Title of Individual [Axis] Title of Individual [Axis] Relationship to Entity [Domain] Relationship to Entity [Domain] Director Director [Member] Employees Employees [Member] Employees [Member] Plan Name [Axis] Plan Name [Axis] Plan Name [Domain] Plan Name [Domain] Tiptree Inc. 2017 Omnibus Incentive Plan Tiptree Financial Inc. 2017 Omnibus Incentive Plan [Member] Tiptree Financial Inc. 2017 Omnibus Incentive Plan Award Type [Axis] Award Type [Axis] Equity Award [Domain] Equity Award [Domain] Restricted Stock Units (RSUs) Restricted Stock Units (RSUs) [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] 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, Number of Shares [Roll Forward] Number of shares issuable [Roll Forward] Number of shares issuable [Roll Forward] Number of shares issuable [Roll Forward] Unvested units as of December 31, 2017 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 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Unvested units as of September 30, 2018 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 [Abstract] Unvested units as of December 31, 2017 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 Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Unvested units as of September 30, 2018 Shares Paid for Tax Withholding for Share Based Compensation Shares Paid for Tax Withholding for Share Based Compensation Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Insurance [Abstract] Net income of statutory insurance companies Statutory Accounting Practices, Statutory Net Income Amount Income Tax Disclosure [Abstract] Total income tax expense (benefit) from continuing operations Effective tax rate (ETR) Effective Income Tax Rate Reconciliation, Percent Income tax expense (benefit) from discontinued operations Discontinued Operation, Tax Effect of Income (Loss) from Discontinued Operation During Phase-out Period Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Commitments and Contingencies Disclosure [Abstract] Other Commitments [Table] Other Commitments [Table] Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Axis] Property Subject to or Available for Operating Lease [Domain] Property Subject to or Available for Operating Lease [Domain] Operating lease obligations Property Subject to Operating Lease [Member] Other Commitments [Line Items] Other Commitments [Line Items] Operating lease obligations Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Less than one year Operating Leases, Future Minimum Payments Due, Next Twelve Months 1-3 years Operating Leases, Future Minimum Payments, Due in Two and Three Years 3-5 years Operating Leases, Future Minimum Payments, Due in Four and Five Years More than 5 years Operating Leases, Future Minimum Payments, Due Thereafter Total Operating Leases, Future Minimum Payments Due Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Employee compensation and benefits Payroll and employee commissions [Member] Payroll and employee commissions [Member] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Employee compensation and benefits Allocated Share-based Compensation Expense Income tax benefit Employee Service Share-based Compensation, Tax Benefit from Compensation Expense Net stock-based compensation expense Allocated Share-based Compensation Expense, Net of Tax Investments, Debt and Equity Securities [Abstract] Amortized Cost Debt Securities, Available-for-sale, Amortized Cost, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Amortized Cost Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Amortized Cost Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost Due after ten years Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost Asset-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Amortized Cost Amortized Cost Debt Securities, Available-for-sale, Amortized Cost Fair Value Debt Securities, Available-for-sale, Fair Value, Fiscal Year Maturity [Abstract] Due in one year or less Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value Due after one year through five years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after One Through Five Years, Fair Value Due after five years through ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value Due after ten years Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value Asset-backed securities Debt Securities, Available-for-sale, Maturity, without Single Maturity Date, Fair Value Fair Value Debt Securities, Available-for-sale Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Table] Product and Service [Axis] Product and Service [Axis] Product and Service [Domain] Product and Service [Domain] Non-Standard Auto Non-Standard Auto [Member] Non-Standard Auto [Member] Credit Protection Credit Protection [Member] Credit Protection [Member] Warranty Warranty [Member] Warranty [Member] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Short-duration Insurance Contracts, Reconciliation of Claims Development to Liability [Line Items] Prior Year Claims and Claims Adjustment Expense Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) Liability for Unpaid Claims and Claims Adjustment Expense, Reported Claims, Amount Liability for Unpaid Claims and Claims Adjustment Expense, Incurred but Not Reported (IBNR) Claims, Amount Debt Disclosure [Abstract] Schedule of Debt Schedule of Debt [Table Text Block] Schedule of Interest Expense Incurred on Debt Schedule of Other Nonoperating Income (Expense) [Table Text Block] Schedule of Maturities of Long-term Debt Schedule of Maturities of Long-term Debt [Table Text Block] Schedule of Available-for-sale Securities [Table] Schedule of Available-for-sale Securities [Table] Financial Instrument [Axis] Financial Instrument [Axis] Financial Instruments [Domain] Financial Instruments [Domain] U.S. Treasury securities and obligations of U.S. government authorities and agencies US Treasury and Government [Member] Obligations of states and political subdivisions US States and Political Subdivisions Debt Securities [Member] Corporate securities Corporate Debt Securities [Member] Asset-backed Securities Asset-backed Securities [Member] Equity securities Equity Securities [Member] Obligations of foreign governments Debt Security, Government, Non-US [Member] Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-sale [Line Items] Fair Value, Less Than or Equal to One Year Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value Gross Unrealized Losses, Less Than or Equal to One Year Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Number of Securities, Less Than or Equal to One Year Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year Fair Value, More Than One Year Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value Gross Unrealized Losses, More Than One Year Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Number of Securities, More Than One Year Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Minimum Minimum [Member] Maximum Maximum [Member] Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Secured corporate credit agreements Secured Debt [Member] Junior subordinated notes Junior Subordinated Debt [Member] Preferred trust securities Trust Preferred Securities Subject to Mandatory Redemption [Member] Corporate Debt Payable Corporate Debt Payable [Member] Corporate Debt Payable [Member] Asset based revolving financing (1) (2) Revolving Credit Facility [Member] Residential mortgage warehouse borrowings (3) Line of Credit [Member] Asset Backed Debt Payable Asset Backed Debt Payable [Member] Asset Backed Debt Payable [Member] Variable Rate [Axis] Variable Rate [Axis] Variable Rate [Domain] Variable Rate [Domain] London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Debt Instrument [Line Items] Debt Instrument [Line Items] Debt instrument, maximum borrowing capacity Debt instrument, maximum borrowing capacity Debt instrument, maximum borrowing capacity Long-term Debt, Gross Long-term Debt, Gross Unamortized discount, net Debt Instrument, Unamortized Discount Unamortized deferred financing costs Debt Issuance Costs, Net Debt, net Long-term Debt Long-term Debt, Weighted Average Interest Rate, at Point in Time Long-term Debt, Weighted Average Interest Rate, at Point in Time Debt Instrument, Description of Variable Rate Basis Debt Instrument, Description of Variable Rate Basis Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Interest Rate, Stated Percentage Debt Instrument, Interest Rate, Stated Percentage Goodwill and Intangible Assets Disclosure [Abstract] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Segments [Axis] Segments [Axis] Segments [Domain] Segments [Domain] Specialty Insurance Specialty Insurance [Member] Specialty Insurance [Member] Mortgage Mortgage [Member] Mortgage [Member] Corporate and Other Corporate and Other [Member] Goodwill [Line Items] Goodwill [Line Items] Goodwill [Roll Forward] Goodwill [Roll Forward] Balance at December 31, 2017 Goodwill Balance at September 30, 2018 Goodwill, Impaired, Accumulated Impairment Loss [Abstract] Goodwill, Impaired, Accumulated Impairment Loss [Abstract] Accumulated impairments Goodwill, Impaired, Accumulated Impairment Loss Goodwill, Impaired [Abstract] Goodwill, Impaired [Abstract] Impairment of goodwill Goodwill, Impairment Loss Impairment of Intangible Assets (Excluding Goodwill) Impairment of Intangible Assets (Excluding Goodwill) Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Legal Entity [Axis] Legal Entity [Axis] Entity [Domain] Entity [Domain] Tiptree Financial Partners, L.P. Tiptree Financial Partners, L.P. [Member] Tiptree Financial Partners, L.P. [Member] Tiptree Operating Company, LLC Tiptree Operating Company, LLC [Member] Tiptree Operating Company, LLC [Member] Class of Stock [Line Items] Class of Stock [Line Items] Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Subsidiary of Limited Liability Company or Limited Partnership, Ownership Interest Partnership Units', Conversion Rate Partnership Units', Conversion Rate Partnership Units', Conversion Rate Stock issued to limited partner (in shares) Stock Issued During Period, Shares, Other Warrants to acquire shares of common stock to holders of the canceled TFP warrants (shares) Class of Warrant or Right, Number of Securities Called by Each Warrant or Right Exercise price per warrant (in USD per share) Class of Warrant or Right, Exercise Price of Warrants or Rights Shares of common stock held by subsidiary, canceled (in shares) Treasury Stock, Shares Canceled Treasury Stock, Shares Canceled Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Insurance policies and contracts acquired Intangible Assets Arising from Insurance Contracts Acquired in Business Combination [Member] Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Remainder of 2018 Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 2019 Finite-Lived Intangible Assets, Amortization Expense, Year Two 2020 Finite-Lived Intangible Assets, Amortization Expense, Year Three 2021 Finite-Lived Intangible Assets, Amortization Expense, Year Four 2022 Finite-Lived Intangible Assets, Amortization Expense, Year Five 2023 and thereafter Finite-Lived Intangible Assets, Amortization Expense, after Year Five Total Finite-Lived Intangible Assets, Net Segment Reporting [Abstract] Schedule of Components of Revenue, Expense, pre-tax Income (loss), and Segment Assets for Each Operating Segment Schedule of Segment Reporting Information, by Segment [Table Text Block] Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] Other Assets and Other Liabilities and Accrued Expenses Other Assets Disclosure [Text Block] Stock Based Compensation Disclosure of Compensation Related Costs, Share-based Payments [Text Block] Revenue from External Customers by Products and Services [Table] Revenue from External Customers by Products and Services [Table] Asset management fee income Asset management fee income [Member] Asset management fee income [Member] Warranty coverage revenue Warranty coverage revenue [Member] Warranty coverage revenue Car club revenue Car club revenue [Member] Car club revenue Other Other contract revenue [Member] Other contract revenue Revenue from External Customer [Line Items] Revenue from External Customer [Line Items] Revenue from contracts with customers Revenue from Contract with Customer, Excluding Assessed Tax Income Taxes Income Tax Disclosure [Text Block] Investments Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Telos Asset Management LLC Telos Asset Management LLC [Member] Telos Asset Management LLC [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Primary beneficiary Variable Interest Entity, Primary Beneficiary [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Distributions received Variable Interest Entity, Measure of Activity, Other, Amount Realized and unrealized gains (losses) on subordinated notes held by the Company, net Variable Interest Entity, Measure of Activity, Realized and Unrealized Gains (Losses) on Subordinated Notes, Amount Variable Interest Entity, Measure of Activity, Realized and Unrealized Gains (Losses) on Subordinated Notes, Amount Total Variable Interest Entity, Measure of Activity, Operating Income or Loss Management Fee Income Net income (loss) attributable to consolidated CLOs Variable Interest Entity, Measure of Activity, Income or Loss before Tax Fair Value Disclosures [Abstract] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Derivative Instrument [Axis] Derivative Instrument [Axis] Derivative Contract [Domain] Derivative Contract [Domain] Interest Rate Lock Commitments Interest Rate Lock Commitments [Member] Asset Class [Axis] Asset Class [Axis] Asset Class [Domain] Asset Class [Domain] CLOs Collateralized Loan Obligations [Member] Other real estate Investment in other real estate [Member] Investment in other real estate Mortgage Loans Held for Sale Mortgage Loans Held for Sale [Member] Mortgage Loans Held for Sale [Member] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Balance at January 1, Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Net realized gains/(losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Net unrealized gains/(losses) Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gain (Loss) Included in Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Unrealized Gain (Loss) Included in Earnings Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Issuances Purchases Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Sales Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Transfers into Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Transfers Into Level 3 Transfer adjustments (out of) Level 3 Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3 Deconsolidation of CLOs due to sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Deconsolidation of CLOs due to Sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Deconsolidation of CLOs due to Sale Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Other Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Other Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3, Other Balance at September 30, Assets, Fair Value Disclosure [Abstract] Assets, Fair Value Disclosure [Abstract] Fair value,measurement with unobservable inputs reconciliation,changes in unrealized gains included in earnings related to assets still held at period end fair value,measurement with unobservable inputs reconciliation,changes in unrealized gains included in earnings related to assets still held at period end fair value,measurement with unobservable inputs reconciliation,changes in unrealized gains included in earnings related to assets still held at period end Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Deferred Revenue Arrangement Type [Axis] Deferred Revenue Arrangement Type [Axis] Deferred Revenue [Domain] Deferred Revenue [Domain] Customer Contracts Customer Contracts [Member] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Rollforward Deferred Revenue Arrangement [Roll Forward] Deferred Revenue Arrangement [Roll Forward] Deferred Revenue, Beginning Balance Deferred Revenue Deferred Revenue, Additions Deferred Revenue, Additions Deferred Revenue, Revenue Recognized Deferred Revenue, Revenue Recognized Deferred Revenue, Ending Balance Income Statement [Abstract] Statement [Table] Statement [Table] Noncontrolling interests - other Noncontrolling interest - other [Member] Noncontrolling interest - other [Member] Noncontrolling interest Noncontrolling Interest [Member] Statement [Line Items] Statement [Line Items] Revenues: Investment Income, Net [Abstract] Earned premiums, net Premiums Earned, Net Service and administrative fees Service and administrative fees Service and administrative fees Ceding commissions Ceding commission income Ceding commission income Net investment income Investment Income, Net Net realized and unrealized (gains) losses Net realized and unrealized (losses) gains Net realized and unrealized (losses) gains Other revenue Other Operating Income Total revenues Revenues Expenses: Operating Expenses [Abstract] Policy and contract benefits Policy and Contract Benefits Policy and Contract Benefits Commission expense Noninterest Expense Commission Expense Employee compensation and benefits Labor and Related Expense Interest expense Interest Expense Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction Other expenses Other Cost and Expense, Operating Total expenses Operating Expenses Other income: Other Income and Expenses [Abstract] Income attributable to consolidated CLOs Variable Interest Entity, Measure of Activity, Revenues Expenses attributable to consolidated CLOs Variable Interest Entity, Measure of Activity, Expense Total other income Other Income Income (loss) before taxes from continuing operations Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Less: provision (benefit) for income taxes Discontinued operations: Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent [Abstract] Income (loss) before taxes from discontinued operations Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, before Income Tax Gain on sale of discontinued operations, net Less: Provision (benefit) for income taxes Net income (loss) from discontinued operations Net Income (Loss) Attributable to Parent [Abstract] Net Income (Loss) Attributable to Parent [Abstract] Net income (loss) before non-controlling interests Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Less: net (loss) income attributable to non-controlling interests Net Income (Loss) Attributable to Noncontrolling Interest Net income (loss) attributable to Common Stockholders Net Income (Loss) Attributable to Parent Net income (loss) per Common Share: Basic earnings per share Diluted earnings per share Weighted average number of Common Shares: Earnings Per Share, Basic and Diluted [Abstract] Basic Diluted Dividends [Abstract] Dividends [Abstract] Dividends declared per Common Share Schedule of Accumulated Other Comprehensive Income (Loss) Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Subsidiary Incentive Plan Subsidiary Incentive Plan [Member] Subsidiary Incentive Plan [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Granted Unvested balance as of December 31, 2017 Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested Vested Share-Based Compensation Arrangement By Share-Based Payment Award, Vested In Period Share-Based Compensation Arrangement By Share-Based Payment Award, Vested In Period Unvested balance as of September 30, 2018 Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested Shares, If Converted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested Shares, If Converted Share-Based Compensation Arrangement By Share-Based Payment Award, Equity Instruments Other Than Options, Nonvested Shares, If Converted Discontinued Operations and Disposal Groups [Abstract] Dispositions, Assets Held for Sale and Discontinued Operations Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Net realized gain on sale of mortgage loans (1) Gain (Loss) on Sales of Loans, Net Net unrealized gains (losses) on equity securities, at fair value held at the reporting date Trading Securities, Change in Unrealized Holding Gain (Loss) Statement of Financial Position [Abstract] Common Stock: $0.001 par value, 200,000,000 shares authorized, 36,643,317 and 35,003,004 shares issued and outstanding, respectively Common Stock [Member] Common Stock: $0.001 par value, 200,000,000 shares authorized, 36,643,317 and 35,003,004 shares issued and outstanding, respectively Common stock - Class B: $0.001 par value, none and 50,000,000 shares authorized, none and 8,049,029 shares issued and outstanding, respectively Common Class B [Member] Assets: Assets [Abstract] Available for sale securities, at fair value Available-for-sale Securities Loans, at fair value Loans Receivable, Fair Value Disclosure Equity securities, at fair value Equity Securities, FV-NI Other Investments Other Investments Total investments Investments Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Restricted cash Restricted Cash and Cash Equivalents Notes and accounts receivable, net Accounts and Notes Receivable, Net Reinsurance receivables Reinsurance Recoverables, Including Reinsurance Premium Paid Deferred acquisition costs Deferred Policy Acquisition Costs Goodwill Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Other assets Other Assets Assets held for sale Disposal Group, Including Discontinued Operation, Assets Total assets Assets Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Liabilities: Liabilities [Abstract] Debt, net Unearned premiums Unearned Premiums Policy liabilities and unpaid claims Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense Deferred revenue Reinsurance payable Reinsurance Payable Other liabilities and accrued expenses Other Liabilities Liabilities held for sale Disposal Group, Including Discontinued Operation, Liabilities Total liabilities Liabilities Stockholders’ Equity: Stockholders' Equity Attributable to Parent [Abstract] Preferred stock: $0.001 par value, 100,000,000 shares authorized, none issued or outstanding Preferred Stock, Value, Issued Common stock Common Stock, Value, Issued Additional paid-in capital Additional Paid in Capital Accumulated other comprehensive income (loss), net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Retained earnings Retained Earnings (Accumulated Deficit) Class A and B Common stock held by subsidiaries Treasury Stock, Value Total Tiptree Inc. stockholders’ equity Stockholders' Equity Attributable to Parent Non-controlling interests Stockholders' Equity Attributable to Noncontrolling Interest Total stockholders’ equity Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total liabilities and stockholders’ equity Liabilities and Equity Property, Plant and Equipment [Table] Property, Plant and Equipment [Table] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Axis] Property, Plant and Equipment, Type [Domain] Property, Plant and Equipment, Type [Domain] Furniture and Fixtures Furniture and Fixtures [Member] Property, Plant and Equipment [Line Items] Property, Plant and Equipment [Line Items] Depreciation expense related to furniture, fixtures and equipment Depreciation Liability for Unpaid Claims and Claim Adjustment Expenses Liability for Future Policy Benefits and Unpaid Claims Disclosure [Text Block] Total incurred Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims Other lines incurred Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Other Lines Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Other Lines Unallocated loss adjustment expense Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Unallocated Loss Adjustment Expense Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims, Unallocated Loss Adjustment Expense Net Policyholder Benefits and Claims Incurred, Net Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Corporate Loans (1) Corporate Loans [Member] Corporate Loans Non-performing loans (2) Nonperforming Financial Instruments [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Unpaid principal balance (UPB) Loans Receivable, Unpaid Principal Balance Loans Receivable, Unpaid Principal Balance Fair value exceeds / (below) UPB Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables Cost Basis of NPLs Loans Receivable, Cost Basis Loans Receivable, Cost Basis Stock Compensation Plan Stock Compensation Plan [Member] Options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] Available for issuance as of December 31, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant RSU and option awards granted Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period Forfeited Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Available for issuance as of September 30, 2018 Remainder of 2018 Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 2019 Long-term Debt, Maturities, Repayments of Principal in Year Two 2020 Long-term Debt, Maturities, Repayments of Principal in Year Three 2021 Long-term Debt, Maturities, Repayments of Principal in Year Four 2022 Long-term Debt, Maturities, Repayments of Principal in Year Five Thereafter Long-term Debt, Maturities, Repayments of Principal after Year Five Total Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative [Table] Derivative [Table] Interest Risk, Interest Rate Lock Commitments Interest Risk, Interest Rate Lock Commitments [Member] Interest Risk, Interest Rate Lock Commitments [Member] Interest Risk, Forward Delivery Contracts Interest Risk, Forward Delivery Contracts [Member] Interest Risk, Forward Delivery Contracts [Member] Interest Risk, TBA Mortgage Backed Securities Interest Risk, TBA Mortgage Backed Securities [Member] Interest Risk, TBA Mortgage Backed Securities [Member] Derivative [Line Items] Derivative [Line Items] Notional values Derivative, Notional Amount Asset derivatives Derivative Asset Liability derivatives Derivative Liability Professional fees Professional Fees General and administrative Selling, General and Administrative Expense Premium taxes Taxes, Other Mortgage origination expenses Loan Processing Fee Rent and related Occupancy, Net Other Other Nonoperating Expense Total other expenses Reinsurance Disclosures [Abstract] Effects of Reinsurance [Table] Effects of Reinsurance [Table] Life Insurance Life Insurance Product Line [Member] Accident and Health Insurance Accident and Health Insurance Product Line [Member] Property and Liability Insurance Property, Liability and Casualty Insurance Product Line [Member] Effects of Reinsurance [Line Items] Effects of Reinsurance [Line Items] Direct amount Policyholder Benefits and Claims Incurred, Direct Ceded to other companies Policyholder Benefits and Claims Incurred, Ceded Assumed from other companies Policyholder Benefits and Claims Incurred, Assumed Member benefit claims (1) Member benefit claims Member Benefit Claims represent claims paid on behalf of contract holders directly to third parties providers for roadside assistance and for the repair or replacement of covered products. Claims can also be paid directly to contract holders as a reimbursement payment provided supporting documentation of loss is submitted to the Company. Claims are recognized as expense when paid. Total policy and contract benefits Losses Incurred, Percentage Assumed to Net Losses Incurred, Percentage Assumed to Net Losses Incurred, Percentage Assumed to Net Schedule of Components of Other Revenue Schedule of Other Nonoperating Income, by Component [Table Text Block] Schedule of Components of Other Expenses Schedule of Other Operating Cost and Expense, by Component [Table Text Block] Schedule of Gross Notional and Fair Value of Derivatives Schedule of Derivative Instruments [Table Text Block] Schedule of Fair Value and Related Outstanding Notional Amounts of Cash Flow Hedging Derivative Schedule of Derivatives Instruments Statements of Financial Performance and Financial Position, Location [Table Text Block] Schedule of Pretax Impact of Cash Flow Hedging Derivative Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] Schedule of Notes and Accounts Receivable Other Short-duration Insurance Product Line Other Short-duration Insurance Product Line [Member] Other Insurance Product Line Other Insurance Product Line [Member] Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward] Policy liabilities and unpaid claims balance at January 1 Less : liabilities of policy-holder accounts balances, gross Policyholder Funds Less : non-insurance warranty benefit claim liabilities Non-insurance warranty benefit claim liabilities Non-insurance warranty benefit claim liabilities Gross liabilities for unpaid losses and loss adjustment expenses Liability for Claims and Claims Adjustment Expense Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Net balance as of January 1, short duration Short-duration Insurance Contracts, Liability for Unpaid Claims and Allocated Claim Adjustment Expense, Net Incurred (short duration) related to: Liability for Unpaid Claims and Claims Adjustment Expense, Incurred Claims [Abstract] Current year Current Year Claims and Claims Adjustment Expense Prior years Prior Year Claims and Claims Adjustment Expense Total incurred Paid (short duration) related to: Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid [Abstract] Current year Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Current Year Prior years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Net balance as of September 30, short duration Reinsurance Recoverable for Unpaid Claims and Claims Adjustments Gross liabilities for unpaid losses and loss adjustment expenses Plus : liabilities of policy-holder accounts balances, gross Plus : non-insurance warranty benefit claim liabilities Policy liabilities and unpaid claims balance as of September 30, Accounting Policies [Abstract] Significant Accounting Policies Significant Accounting Policies [Text Block] Statement of Stockholders' Equity [Abstract] Consolidated Entities [Axis] Consolidated Entities [Axis] Consolidated Entities [Domain] Consolidated Entities [Domain] Tiptree Parent [Member] Subsidiaries Subsidiaries [Member] Common stock Additional paid-in capital Additional Paid-in Capital [Member] Accumulated other comprehensive income (loss) AOCI Attributable to Parent [Member] Retained earnings Retained Earnings [Member] Common Stock - Class B Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Capital, beginning of period, amount Capital, beginning of period, shares Shares, Issued Total stockholders’ equity to Tiptree Financial Inc. Amortization of share-based incentive compensation Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Vesting of share-based incentive compensation Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Vesting of share-based incentive compensation Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Shares issued to settle contingent consideration (in shares) Stock Issued During Period, Shares, Acquisitions Shares issued to settle contingent consideration Stock Issued During Period, Value, Acquisitions Issuance of Common Stock for cash upon exercise of stock options Stock Issued During Period, Value, Stock Options Exercised Issuance of Common Stock for cash upon exercise of stock options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Other comprehensive income, net of tax Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Other comprehensive income, net of tax, portion attributable to noncontrolling interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Noncontrolling Interest Other comprehensive income (loss), net of tax Other Comprehensive Income (Loss), Net of Tax Non-controlling interest contributions Noncontrolling Interest, Increase from Contributions Noncontrolling Interest, Increase from Contributions Non-controlling interest distributions Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Shares purchased under stock purchase plan (in shares) Stock Repurchased and Retired During Period, Shares Shares purchased under stock purchase plan Stock Repurchased and Retired During Period, Value Shares acquired by subsidiaries (in shares) Treasury Stock, Shares, Acquired Shares acquired by subsidiaries Treasury Stock, Value, Acquired, Cost Method Net changes in non-controlling interest Noncontrolling Interest, Period Increase (Decrease) Reorganization merger (in shares) Stock issued during period, shares, period increase (decrease) Stock Issued During Period, Shares, Period Increase (Decrease) Noncontrolling interest, decrease from redemptions or purchase of interests Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Cancellation of treasury shares (in shares) Treasury Stock, Shares, Retired Cancellation of treasury shares Treasury Stock, Retired, Cost Method, Amount Dividends declared Dividends Net income (loss) attributable to Common Stockholders Net income (loss) attributable to noncontrolling interests Net income (loss) Capital, end of period, amount Capital, end of period, shares Total stockholders’ equity to Tiptree Financial Inc. Units of Partnership Interest, amount Units of Partnership Interest, Amount Derivative Instruments, Gain (Loss) [Table] Derivative Instruments, Gain (Loss) [Table] Interest Rate Swap Interest Rate Swap [Member] Hedging Relationship [Axis] Hedging Relationship [Axis] Hedging Relationship [Domain] Hedging Relationship [Domain] Cash Flow Hedging Cash Flow Hedging [Member] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Unrealized gain (loss), net of tax, on the fair value of interest rate swaps Unrealized Gain (Loss) on Cash Flow Hedging Instruments Balance Sheet Related Disclosures [Abstract] Balance Sheet Related Disclosures [Abstract] Balance Sheet Location Description of Location of Gain (Loss) on Interest Rate Cash Flow Hedge Derivative in Financial Statements Schedule of reconciliation of basic and diluted net income per common share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Other Liabilities Disclosure [Abstract] Accounts payable and accrued expenses Accounts Payable and Accrued Liabilities Deferred tax liabilities, net Deferred Tax Liabilities, Net Due to brokers Due to Correspondent Brokers Commissions payable Accrued Sales Commission Accrued interest payable Interest Payable Escrow payable Other Liabilities, Escrow Payable Other Liabilities, Escrow Payable Derivative liabilities, at fair value Trading Liabilities, Fair Value Disclosure Other Other Sundry Liabilities Total other liabilities and accrued expenses Operating Segment Data Segment Reporting Disclosure [Text Block] Stock Options - first vesting tranche, third anniversary Stock Options - second vesting tranche, fourth anniversary Stock Options - third vesting tranche, fifth anniversary Employee Stock Option Employee Stock Option [Member] Balance, December 31, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Balance, September 30, 2018 (1) Weighted average exercise price (in dollars per stock option) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Balance, December 31, 2017 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 Balance, September 30, 2018 (1) Weighted average grant date value (in dollars per stock option) Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Balance, December 31, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Option, Nonvested, Weighted Average Exercise Price Granted Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value Balance, September 30, 2018 (1) Options Exercisable Options Exercisable [Abstract] Options Exercisable Balance, December 31, 2017 Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Granted Share-based Compensation Arrangement By Share-based Payment Award, Options, Exercisable, Grants In Period, Number Share-based Compensation Arrangement By Share-based Payment Award, Options, Exercisable, Grants In Period, Number Balance, September 30, 2018 (1) Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] Weighted average remaining contractual term at September 30, 2018 (in years) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Share-based Compensation Arrangements by Share-based Payment Award, Options, Book Value Target, Amount Per Share Share-based Compensation Arrangements by Share-based Payment Award, Options, Book Value Target, Amount Per Share Share-based Compensation Arrangements by Share-based Payment Award, Options, Book Value Target, Amount Per Share Other Investments [Abstract] Investment Holdings, Other than Securities Investment Holdings, Other than Securities [Table Text Block] Effects of Reinsurance Effects of Reinsurance [Table Text Block] Components of Reinsurance Receivable Components of Reinsurance Receivable [Table Text Block] Represents the ceded receivables to reinsurers where the credit risk is minimized due to collateralization of reserves utilizing trust accounts and letters of credit. Premiums Written, Net [Abstract] Premiums Written, Net [Abstract] Direct amount Direct Premiums Written Ceded to other companies Ceded Premiums Written Assumed from other companies Assumed Premiums Written Net amount Premiums Written, Net Percentage of amount - assumed to net SEC Schedule, 12-17, Insurance Companies, Reinsurance, Premium, Percentage Assumed to Net Premiums Earned, Net [Abstract] Premiums Earned, Net [Abstract] Direct amount Direct Premiums Earned Ceded to other companies Ceded Premiums Earned Assumed from other companies Assumed Premiums Earned Net amount Percentage of amount - assumed to net Premiums earned, Percentage Assumed to Net Premiums earned, Percentage Assumed to Net Net Investment Income Corporate securities Certificates of deposit Certificates of Deposit [Member] Amortized cost Available-for-sale Securities, Amortized Cost Basis Gross unrealized gains Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax Gross unrealized losses Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax Fair value Derivative Financial Instruments and Hedging Derivative Instruments and Hedging Activities Disclosure [Text Block] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table] Disposal Group Classification [Axis] Disposal Group Classification [Axis] Disposal Group Classification [Domain] Disposal Group Classification [Domain] Discontinued Operations Discontinued Operations [Member] Disposal Group Name [Axis] Disposal Group Name [Axis] Disposal Group Name [Domain] Disposal Group Name [Domain] Siena Disposition Siena Disposition [Member] Siena Disposition [Member] Care Disposition Care Disposition [Member] Care Disposition [Member] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] Variable Interest Entity, Number of Collateralized Loan Obligations, Positions Sold Variable Interest Entity, Number of Collateralized Loan Obligations, Positions Sold Variable Interest Entity, Number of Collateralized Loan Obligations, Positions Sold Proceeds from Divestiture of Businesses Proceeds from Divestiture of Businesses Notes Issued-Seller Provided Financing Notes Issued Note Receivable, Seller Provided Financing,Interest Rate Note Receivable, Interest Rate Note Receivable, Interest Rate Number of Real Estate Properties Number of Real Estate Properties Shares received Disposal Group, Including Discontinued Operation, Consideration, Shares Received Disposal Group, Including Discontinued Operation, Consideration, Shares Received Estimated fair value at time of sale Disposal Group, Including Discontinued Operation, Consideration Ownership in acquiring company Noncash or Part Noncash Acquisition, Interest Acquired Other Comprehensive Income (Loss), before Tax Other Comprehensive Income (Loss), before Tax Gains (Losses) on Sales of Investment Real Estate Gains (Losses) on Sales of Investment Real Estate (Gains) losses reclassified from AOCI into income-effective portion Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax Period of gain provision Disposal Group, Including Discontinued Operation, Contingent Consideration, Period Of Gain Provision Disposal Group, Including Discontinued Operation, Contingent Consideration, Period Of Gain Provision Income: Revenues [Abstract] Net realized and unrealized gains (losses) Gain (Loss) on Investments Interest income Investment Income, Interest Total income Total expense Preferred stock, par value Preferred Stock, Par or Stated Value Per Share Preferred stock, shares authorized Preferred Stock, Shares Authorized Preferred stock, shares issued Preferred Stock, Shares Issued Preferred stock, shares outstanding Preferred Stock, Shares Outstanding Common stock, par value Common Stock, Par or Stated Value Per Share Common stock, shares authorized Common Stock, Shares Authorized Common stock, shares issued Common Stock, Shares, Issued Common stock, shares outstanding Common Stock, Shares, Outstanding Treasury stock, shares Treasury Stock, Shares Fair value of restricted investments for special deposits required by state insurance departments Assets Held by Insurance Regulators Fair value of restricted investments in trust pursuant to reinsurance agreements Restricted Investments Total fair value of restricted investments Restricted Investments, at Fair Value Class of Treasury Stock Class of Treasury Stock [Table Text Block] Dividends Declared Dividends Declared [Table Text Block] Statutory Accounting Practices Disclosure Statutory Accounting Practices Disclosure [Table Text Block] Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Schedule of Intangible Assets and Goodwill Schedule of Intangible Assets and Goodwill [Table Text Block] Schedule of Goodwill Schedule of Goodwill [Table Text Block] Schedule of identifiable intangible assets Schedule of Finite-Lived Intangible Assets [Table Text Block] Finite-lived Intangible Assets Amortization Expense Finite-lived Intangible Assets Amortization Expense [Table Text Block] Schedule of Finite-Lived Intangible Assets, Future Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets [Axis] Indefinite-lived Intangible Assets, Major Class Name [Domain] Indefinite-lived Intangible Assets, Major Class Name [Domain] Insurance licensing agreements Licensing Agreements [Member] Finite-lived Intangible Assets [Roll Forward] Finite-lived Intangible Assets [Roll Forward] Balance at December 31, 2017 Intangible assets divested Finite-Lived Intangible Assets, Period Increase (Decrease) Less: amortization expense Amortization of Intangible Assets Balance at September 30, 2018 Impairment of Intangible Assets (Excluding Goodwill) [Abstract] Impairment of Intangible Assets (Excluding Goodwill) [Abstract] Concentration Risk [Table] Concentration Risk [Table] Concentration Risk Type [Axis] Concentration Risk Type [Axis] Concentration Risk Type [Domain] Concentration Risk Type [Domain] Customer Concentration Risk Customer Concentration Risk [Member] Concentration Risk [Line Items] Concentration Risk [Line Items] Total of the three largest receivable balances from non-affiliated reinsurers Schedule of Segment Reporting Information, by Segment [Table] Schedule of Segment Reporting Information, by Segment [Table] Asset Management Asset Management Segment [Member] Asset Management Segment [Member] Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Debt Instrument [Axis] Debt Instrument [Axis] Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Asset Based Leverage - Corporate Loans Asset Based Leverage - Corporate Loans [Member] Asset Based Leverage - Corporate Loans Asset Based Leverage - Nonperforming Loans Asset Based Leverage - Nonperforming Loans [Member] Asset Based Leverage - Nonperforming Loans Asset Backed Revolving Line of Credit - Premium Financing Asset Backed Revolving Line of Credit - Premium Financing [Member] Asset Backed Revolving Line of Credit - Premium Financing Asset-based revolving facility Residential mortgage warehouse borrowings Increase (Decrease) in maximum borrowing capacity Increase (Decrease) in maximum borrowing capacity Increase (Decrease) in maximum borrowing capacity Repayments of Secured Debt Repayments of Secured Debt Debt Instrument, Basis Spread on Variable Rate Debt Instrument, Prepayment Premium Percentage Debt Instrument, Prepayment Premium Percentage Debt Instrument, Prepayment Premium Percentage Debt, prepayment penalty, period Debt, prepayment penalty, period Debt, prepayment penalty, period Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Reliance Reliance [Member] Reliance Liability Class [Axis] Liability Class [Axis] Fair Value by Liability Class [Domain] Fair Value by Liability Class [Domain] Other Liabilities Other Liabilities [Member] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Fair Value Inputs, Assets, Quantitative Information [Line Items] Fair Value Measurement Inputs and Valuation Techniques [Line Items] Contingent consideration payable - Reliance Business Combination, Contingent Consideration, Liability Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items] Gain (loss) recognized in AOCI on the derivative-effective portion Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax Gains (losses) recognized in income on the derivative-ineffective portion Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net Other Liabilities [Table Text Block] Other Liabilities [Table Text Block] Available for sale securities, at fair value Available-for-sale Securities [Member] Loans, at fair value Loans Receivable [Member] Other Investments Other Investments [Member] Investment income, gross Gross Investment Income, Operating Total investment income Investment Income, Interest and Dividend Less: investment expenses Investment Income, Investment Expense Net investment income Held for sale Disposal Group, Held-for-sale, Not Discontinued Operations [Member] Held for sale, discontinued operation Discontinued Operations, Held-for-sale [Member] Luxury Disposition Luxury Disposition [Member] Luxury Disposition [Member] 2017 Disposition(s) 2017 Disposition(s) [Member] 2017 Disposition(s) [Member] Disposal Group, Including Discontinued Operation, Assets [Abstract] Disposal Group, Including Discontinued Operation, Assets [Abstract] Loans at amortized cost, net Loans Receivable, Net Real estate, net of accumulated depreciation of $0 and $26,823 Real Estate Investment Property, Net Investments Cash and cash equivalents Disposal Group, Including Discontinued Operation, Cash and Cash Equivalents Notes and accounts receivable, net Disposal Group, Including Discontinued Operation, Accounts, Notes and Loans Receivable, Net Intangible assets, net of accumulated amortization of $0 and $26,944 Disposal Group, Including Discontinued Operation, Intangible Assets Assets held for sale Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Disposal Group, Including Discontinued Operation, Liabilities [Abstract] Debt, net Other liabilities and accrued expenses Disposal Group, Including Discontinued Operation, Other Liabilities Liabilities held for sale Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Abstract] Accumulated depreciation, real estate, net Real Estate Investment Property, Accumulated Depreciation Accumulated amortization, intangible assets Finite-Lived Intangible Assets, Accumulated Amortization Impairments on assets held for sale or discontinued operations Impairment of Long-Lived Assets to be Disposed of Revenues: Rental and related revenue Disposal Group, Including Discontinued Operation, Rental Income Total revenues Disposal Group, Including Discontinued Operation, Revenue Expenses: Costs and Expenses [Abstract] Employee compensation and benefits Interest expense Disposal Group, Including Discontinued Operation, Interest Expense Depreciation and amortization Disposal Group, Including Discontinued Operation, Depreciation and Amortization Total expenses Disposal Group, Including Discontinued Operation, Other Expense Net income (loss) before taxes from discontinued operations Discontinued operations, net Schedule of Intangible Assets, Net [Table] Schedule of Intangible Assets, Net [Table] Schedule of Intangible Assets, Net [Table] Customer relationships Customer Relationships [Member] Trade Names Trade Names [Member] Software licensing Software License Arrangement [Member] Leases in place Leases, Acquired-in-Place [Member] Schedule of Intangible Assets, Net [Line Items] Schedule of Intangible Assets, Net [Line Items] [Line Items] for Schedule of Intangible Assets, Net [Table] Finite-Lived Intangible Assets, Gross Finite-Lived Intangible Assets, Gross Accumulated amortization Indefinite-Lived License Agreements Indefinite-Lived License Agreements Intangible Assets, Net Goodwill Total Intangible Assets, Net (Including Goodwill) Amortization expense on intangible assets Statement of Cash Flows [Abstract] Operating Activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Net income (loss) Adjustments to reconcile net income to net cash provided by (used in) operating activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Net (gain) on sale of subsidiary Gain (Loss) on Disposition of Stock in Subsidiary Net unrealized loss (gain) on interest rate swaps Unrealized Gain (Loss) on Derivatives Change in fair value of contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Asset Non cash compensation expense Share-based Compensation Amortization/accretion of premiums and discounts Accretion (Amortization) of Discounts and Premiums, Investments Depreciation and amortization expense Depreciation, Depletion and Amortization Bad debt expense Provision for Doubtful Accounts Amortization of deferred financing costs Amortization of Debt Issuance Costs and Discounts Loss on extinguishment of debt Gain (Loss) on Extinguishment of Debt Deferred tax expense (benefit) Deferred Income Tax Expense (Benefit) Mortgage loans originated for sale Payments for Origination of Mortgage Loans Held-for-sale Proceeds from the sale of mortgage loans originated for sale Proceeds from Sale of Mortgage Loans Held-for-sale (Increase) decrease in notes and accounts receivable Increase (Decrease) in Accounts and Notes Receivable (Increase) decrease in reinsurance receivables Increase (Decrease) in Reinsurance Recoverable (Increase) decrease in deferred acquisition costs Increase (Decrease) in Deferred Policy Acquisition Costs (Increase) decrease in other assets Increase (Decrease) in Other Operating Assets Increase (decrease) in unearned premiums Increase (Decrease) in Unearned Premiums Increase (decrease) in policy liabilities and unpaid claims Increase (Decrease) in Other Policyholder Funds Increase (decrease) in deferred revenue Increase (Decrease) in Deferred Revenue Increase (decrease) in reinsurance payable Increase (Decrease) in Reinsurance Payables Increase (decrease) in other liabilities and accrued expenses Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Operating activities from consolidated CLOs Variable Interest Entity, Consolidated, Payments for (Proceeds from) Operating Activities Variable Interest Entity, Consolidated, Payments for (Proceeds from) Operating Activities Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Operating Activities Investing Activities: Net Cash Provided by (Used in) Investing Activities [Abstract] Purchases of investments Payments to Acquire Investments Proceeds from sales and maturities of investments Proceeds from Sale, Maturity and Collection of Investments (Increase) decrease in loans owned, at amortized cost, net Increase (Decrease) in Loans Held-for-sale Proceeds from the sale of real estate Proceeds from Sale of Real Estate Held-for-investment Purchases of fixed assets Payments to Acquire Property, Plant, and Equipment Proceeds from the sale of subsidiaries Proceeds from Divestiture of Interest in Consolidated Subsidiaries Proceeds from notes receivable Proceeds from Collection of Notes Receivable