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Amount of amortization expense attributable to debt issuance costs.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Amount of investment held by insurance company, excluding investment in related party.

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Note 20 - Debt (Details Textual) - USD ($)						12 Months Ended
Note 20 - Debt (Details Textual) - USD ($)	Oct. 28, 2020	Apr. 10, 2020	Feb. 03, 2020	Sep. 24, 2019	Sep. 25, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Oct. 27, 2020	Mar. 31, 2020	Jan. 31, 2020	Sep. 25, 2019	Jan. 29, 2019	Sep. 01, 2017	Aug. 31, 2017	Sep. 30, 2013
Common Stock, Par or Stated Value Per Share (in dollars per share)						$ 0.01	$ 0.01							$ 0.01	$ 0.001
Redeemable Non-controlling Interest Membership Units Not Held Share Ratio						10
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust							$ 49,614,000
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount							$ 1,489,000
Common Stock, Shares, Issued, Total (in shares)						1,325,529	1,193,624
Proceeds from Lines of Credit, Total						$ 17,500,000
Amortization of Debt Issuance Costs						$ 626,000	509,000	$ 552,000
JVB Holdings [Member] \| JVB's [Member]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Credit Facility [Member] \| Byline Bank [Member] \| JVB's [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.50%
Junior Subordinated Debt [Member]
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust							$ 49,614,000
Yield To Maturities						11.58%
Non-convertible Senior Notes 12.00% (2019 Senior Notes) [Member] \| Non-convertible Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage				8.00%		12.00%
Debt Instrument, Interest Rate In Event of Default				9.00%		13.00%
Convertible Note 2017 [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share)						$ 1.45	$ 14.50
Sunset Financial Statutory Trust I [Member] \| Junior Subordinated Debt [Member] \| Alesco Capital Trust I [Member]
Fair Value of Common Securities Variable Interest Entities Trusts							$ 0
Non-convertible Senior Notes 12.00% (2020 Senior Notes) [Member] \| Non-convertible Senior Notes [Member]
Debt Instrument, Interest Rate, Stated Percentage			12.00%
Debt Instrument, Face Amount											$ 4,500,000
Repayments of Long-term Debt, Total			$ 4,386,000
Long-term Debt, Gross						$ 2,400
Non-convertible Senior Notes 12.00% (2020 Senior Notes) [Member] \| Non-convertible Senior Notes [Member] \| JKD Capital Partners I, LTD [Member]
Debt Instrument, Interest Rate, Stated Percentage											12.00%
Debt Instrument, Face Amount											$ 2,250,000
Convertible Notes 2013 [Member]
Debt Instrument, Interest Rate, Stated Percentage																8.00%
Debt Instrument, Convertible, Conversion Price (in dollars per share)												$ 30
Debt Instrument, Face Amount																$ 8,248,000
Repayments of Convertible Debt					$ 1,461,000
Debt Instrument, Convertible Percentage of Outstanding Common Stock					19.99%
Convertible Notes 2013 [Member] \| Edward E. Cohen IRA [Member]
Common Stock, Shares, Issued, Total (in shares)						379,785
Convertible Notes 2013 [Member] \| EBC Family Trust [Member]
Common Stock, Shares, Issued, Total (in shares)						207,834
Convertible Notes Amended 2013 [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share)												$ 12
Legacy Texas [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 12,500,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage						0.25%
Line Of Credit Facility, Commitment Fee Percentage Threshold						50.00%
Legacy Texas [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate						1.50%
Legacy Texas [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Residential Transition Loans [Member]
Debt Instrument, Basis Spread on Variable Rate						4.00%
Legacy Texas [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Aged Residential Transition Loans [Member]
Debt Instrument, Basis Spread on Variable Rate						5.00%
Legacy Texas [Member] \| ViaNova Capital Group, LLC [Member]
Line of Credit Facility, Maximum Borrowing Capacity						$ 12,500,000
Line Of Credit Facility, Percent Of Commitment Amount Deposit By Related Party						2.00%
Legacy Texas [Member] \| Credit Facility [Member]
Long-term Debt, Gross							$ 4,777,000
FT Financial Bank, N.A. [Member]
Line of Credit Facility, Maximum Borrowing Capacity													$ 7,500,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage						0.50%
Line of Credit Facility, Possible Request of Reduction In Borrowing Commitment						$ 1,000,000
Line of Credit Facility, Possible Request of Reduction in Borrowing Commitment Multiple After Initial Request						$ 500,000
FT Financial Bank, N.A. [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate						6.00%
FT Financial Bank, N.A. [Member] \| JVB's [Member]
Debt Instrument, Face Amount						$ 25,000,000
Debt Instrument, Basis Spread on Variable Rate						6.00%
Line of Credit Facility, Commitment Fee Amount						$ 250,000
The 2019 FT Revolver [Member] \| Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity						25,000,000
FT LOC 2018 [Member] \| Credit Facility [Member]
Long-term Debt, Gross						17,500,000
Debt Issuance Costs, Gross						525,000
FT Revolver 2019 [Member]
Long-term Debt, Gross									$ 17,500,000	$ 17,500,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage		0.75%
Line of Credit Facility, Commitment Fee Amount		$ 131,000
Loan Agreement [Member] \| Byline Bank [Member] \| JVB's [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 7,500,000
Revolving Note and Cash Subordination Agreement [Member] \| Byline Bank [Member] \| JVB's [Member]
Line of Credit Facility, Maximum Borrowing Capacity	17,500,000
Credit Facility [Member] \| Byline Bank [Member]
Proceeds from Lines of Credit, Total						0
Credit Facility [Member] \| Byline Bank [Member] \| JVB's [Member]
Line of Credit Facility, Maximum Borrowing Capacity	25,000,000
Line of Credit Facility, Commitment Fee Amount	$ 250,000
Line of Credit Facility, Commitment Fee Percentage	0.50%
Line of Credit Facility, Minimum Request in Reduction of Maximum Borrowing Capacity	$ 1,000,000
Line of Credit Facility, Reduction in Maximum Borrowing Capacity, Increments After Minimum						500,000
Line of Credit Facility, Reduction in Maximum Borrowing Capacity, Notice Period (Day)	5 days
Debt Instrument, Covenant, Minimum Tangible Net Worth	$ 85,000,000,000
Debt Instrument, Covenant, Minimum Excess Net Capital	40,000,000,000
Credit Facility [Member] \| October 29, 2020 Through December 31, 2021 [Member] \| Byline Bank [Member] \| JVB's [Member]
Debt Instrument, Covenant, Minimum Tangible Net Worth	$ 80,000,000,000
Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member] \| Byline Bank [Member] \| JVB's [Member]
Debt Instrument, Basis Spread on Variable Rate	6.00%
Debt Instrument, Minimum Interest Rate	7.00%
Contingent Convertible Senior Notes 8% Due 2022 [Member]
Debt Issuance Costs, Gross						1,400,000
Contingent Convertible Senior Notes 8% Due 2020 [Member] \| Contingent Convertible Senior Notes [Member]
Debt Issuance Costs, Gross						670,000
MB Financial Bank, N.A. [Member] \| Credit Facility [Member]
Debt Issuance Costs, Gross						$ 272,000