Note 16 - Debt (Details Textual) - USD ($) $ in Thousands				3 Months Ended
		Dec. 21, 2021	Oct. 28, 2020	Mar. 31, 2024	Jan. 05, 2024	Dec. 31, 2023	Jan. 31, 2022
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust				$ 49,614
SEC Schedule, 12-15, Insurance Companies, Summary of Investments, Other than Investments in Related Parties, Amount				1,489
Equity Securities without Readily Determinable Fair Value, Amount				$ 0
Alesco Capital Trust I [Member] | Cohen & Company [Member]
Stock Issued During Period, Shares, New Issues (in shares)				870
Stock Issued During Period, Value, New Issues				$ 870
Sunset Financial Statutory Trust I [Member] | Cohen & Company [Member]
Stock Issued During Period, Shares, New Issues (in shares)				619
Stock Issued During Period, Value, New Issues				$ 619
Credit Facility [Member] | JVB [Member] | Byline Bank [Member]
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage			0.50%
Credit Facility [Member] | JVB [Member] | Byline Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 15,000			$ 15,000
Line of Credit Facility, Commitment Fee Percentage			0.50%
Line of Credit Facility, Minimum Request in Reduction of Maximum Borrowing Capacity			$ 1,000
Line of Credit Facility, Reduction in Maximum Borrowing Capacity, Increments After Minimum		$ 500
Debt Instrument, Covenant, Minimum Tangible Net Worth				70,000
Debt Instrument, Covenant, Minimum Excess Net Capital				$ 40,000
Financial Covenant, Total Amount, Drawn Maximum Percentage Of Tangible Net Worth				25.00%
Credit Facility [Member] | Secured Overnight Financing Rate (SOFR) [Member] | JVB [Member] | Byline Bank [Member]
Debt Instrument, Basis Spread on Variable Rate		6.00%
Debt Instrument, Minimum Interest Rate			7.00%
Junior Subordinated Debt [Member]
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust				$ 49,614
Yield To Maturities				21.67%
Junior Subordinated Debt [Member] | Sunset Financial Statutory Trust I [Member] | Alesco Capital Trust I [Member]
Fair Value of Common Securities Variable Interest Entities Trusts				$ 0
Non-convertible Senior Notes [Member] | Non-convertible Senior Notes 10.00% (2020 Senior Notes) [Member] | JKD Capital Partners I, LTD [Member]
Debt Instrument, Interest Rate, Stated Percentage							10.00%
Non-convertible Senior Notes [Member] | Non-convertible Senior Notes 12.00% (2019 Senior Notes) [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage					12.00%
Junior Subordinated Notes [Member]
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust				$ 49,614
Junior Subordinated Notes [Member] | Sunset Financial Statutory Trust I [Member]
Debt Instrument, Interest Rate, Stated Percentage	[1],[2]			9.71%
Junior Subordinated Notes [Member] | Alesco Capital Trust I Debt [Member]
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust				$ 28,995
Junior Subordinated Notes [Member] | Alesco Capital Trust I Debt [Member] | London Interbank Offered Rate [Member]
Debt Instrument, Basis Spread on Variable Rate				4.00%
Junior Subordinated Notes [Member] | Alesco Capital Trust I Debt [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument, Basis Spread on Variable Rate				4.26161%
Junior Subordinated Notes [Member] | Sunset Financial Statutory Trust I Debt [Member]
Junior Subordinated Debenture Owed To Unconsolidated Subsidiary Trust Net Of Ownership Interest In Trust				$ 20,619
Debt Instrument, Basis Spread on Variable Rate				4.15%
Junior Subordinated Notes [Member] | Sunset Financial Statutory Trust I Debt [Member] | Secured Overnight Financing Rate (SOFR) [Member]
Debt Instrument, Basis Spread on Variable Rate				4.41161%

[1] Represents the interest rate in effect as of the last day of the reporting period.

[2] The junior subordinated notes listed represent debt the Company owes to the two trusts noted above. The total par amount owed by the Company to the trusts is $49,614. However, the Company owns the common stock of the trusts in a total par amount of $1,489. The Company pays interest (and at maturity, principal) to the trusts on the entire $49,614 junior notes outstanding. However, the Company receives back from the trusts the pro rata share of interest and principal on the common stock held by the Company. These trusts are VIEs and the Company does not consolidate them even though the Company holds the common stock. The Company carries the common stock on its balance sheet at a value of $0. The junior subordinated notes are recorded at a discount to par. When factoring in the discount, the yield to maturity of the junior subordinated notes as of March 31, 2024 on a combined basis was 21.67% assuming the variable rate in effect on the last day of the reporting period remains in effect until maturity.