Note 31 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands																				1 Months Ended									12 Months Ended
	Jan. 31, 2022	Dec. 20, 2021	Nov. 24, 2021	Jun. 26, 2021	Mar. 15, 2021	Mar. 05, 2021	Feb. 26, 2021	Dec. 14, 2020	Oct. 13, 2020	Oct. 01, 2020	Sep. 29, 2020	Sep. 08, 2020	Feb. 03, 2020	Jan. 31, 2020	Dec. 30, 2019	Sep. 30, 2019	Sep. 29, 2017	Oct. 03, 2016	Aug. 28, 2015	Mar. 31, 2021	Oct. 31, 2020	Dec. 31, 2019	Oct. 31, 2019	Mar. 31, 2019	Jan. 31, 2019	Dec. 31, 2018	Jan. 31, 2017	Sep. 30, 2013	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Nov. 18, 2022	Dec. 01, 2020	Jul. 01, 2019
Payments to Acquire Equity Method Investments																													$ 2,614	$ 8,392	$ 12,675
Stock Issued During Period, Value, New Issues																														$ 9,076
Preferred Stock, Shares Issued, Total (in shares)																													27,413,098	27,413,098
Due from Related Parties, Total																													$ 787	$ 4,581
Equity Method Investments																						$ 3,799							$ 8,929	48,238	13,482
Saving Plan 401K [Member]
Defined Contribution Plan, Employer Matching Contribution, Percent of Match																													50.00%
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay																													3.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount																													$ 377	287	270
Series F Preferred Stock [Member]
Preferred Stock, Shares Issued, Total (in shares)																													22,429,541
Common Stock [Member]
Stock Issued During Period, Value, New Issues																														3
Insurance SPAC II [Member] | Operating LLC [Member]
Service Fees, Per Month																														$ 20
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																														46.10%
Insurance SPAC III Sponsor Entities [Member] | Operating LLC [Member]
Service Fees, Per Month																															20
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners																														47.30%
Daniel G. Cohen [Member]
Stock Issued During Period, Value, New Issues															$ 4,351
CBF Cohen Bros. Financial [Member]
Related Party Transaction, Amounts of Transaction																	$ 8,000
DGC Trust/CBF [Member]
Related Party Transaction, Amounts of Transaction																	10,000
Related Party Transaction, Purchases from Related Party																				$ 4,000	$ 2,500		$ 1,500
EBC Family Trust [Member]
Related Party Transaction, Amounts of Transaction																												$ 4,000
Notes Payable, Related Parties																												2,400
Stock Issued During Period, Value, New Issues																												$ 1,600
Pensco Trust Company, Custodian fbo Edward E. Cohen IRA [Member] | Contingent Convertible Senior Notes [Member]
Related Party Transaction, Convertible Notes Purchased Between Related Parties													$ 4,386						$ 4,386
JKD Capital Partners I, LTD [Member]
Related Party Transaction, Amounts of Transaction	$ 4,500													$ 2,250
Investments In and Advance To Affiliates Amount Of Equity																		$ 6,000							$ 1,268		$ 1,000
JKD Capital Partners I, LTD [Member] | 2022 Note Purchase Agreement [Member]
Related Party Transaction, Amounts of Transaction	$ 2,250
DGC Trust [Member]
Related Party Transaction, Amounts of Transaction																	$ 2,000
DGC Trust [Member] | Payments to Redeem Financial Instrument [Member]
Related Party Transaction, Amounts of Transaction																$ 2,000
DGC Trust [Member] | Series F Preferred Stock [Member]
Preferred Stock, Shares Issued, Total (in shares)															9,880,268
DGC Trust [Member] | IMXI [Member] | Common Stock [Member]
Investment Owned, Balance, Shares (in shares)															291,480
Investment Owned, at Fair Value															$ 3,428
Cohen Circle LLC [Member]
Consulting Fees Per Month										$ 1																							$ 1	$ 1
Insurance SPAC [Member]
Related Party Transactions, Agreed Amount To Lend									$ 750
Due from Related Parties, Total									650
Proceeds from Related Party Debt									650
Insurance SPAC [Member] | Operating LLC [Member]
Service Fees, Per Month									$ 10
Insurance SPAC II [Member]
Related Party Transactions, Agreed Amount To Lend																														$ 750
Due from Related Parties, Total																														0
Insurance SPAC III [Member]
Related Party Transaction, Amounts of Transaction																													$ 71
Due from Related Parties, Total																													0	500		$ 960
Insurance SPAC III Sponsor Entities [Member]
Related Party Transaction, Amounts of Transaction																													1,500
Related Party Transactions, Agreed Amount To Lend																													960
FinTech Acquisition Corp III [Member] | COHN, LLC [Member]
Investment Owned, Balance, Shares (in shares)																										23,300
Zucker and Moore, LLC [Member]
Operating Lease, Expense																													48	96	96
CK Capital Partners B.V. [Member]
Equity Method Investment, Ownership Percentage																						45.00%
Equity Method Investment, Quoted Market Value																						$ 18
CK Capital Partners B.V. [Member] | Daniel G. Cohen [Member]
Equity Method Investment, Quoted Market Value																						$ 17
AOI [Member]
Equity Method Investment, Ownership Percentage																						10.00%
Equity Method Investment, Quoted Market Value																						$ 1
Payments to Acquire Equity Method Investments																						1
Sponsor Entities [Member] | Betsy Cohen [Member]
Investments In and Advance To Affiliates Amount Of Equity																								$ 2
SPAC II Sponsor Entities [Member] | Betsy Cohen [Member]
Investments In and Advance To Affiliates Amount Of Equity										$ 1																					1
FlipOs [Member]
Other Investments, Total																													691
Insurance SPAC [Member]
Equity Method Investments																						3,222							$ 0	$ 4,543	9,807
Insurance SPAC [Member] | Sponsor Entities [Member]
Equity Method Investment, Ownership Percentage									26.50%
FTAC IV Sponsor [Member]
Equity Method Investment, Quoted Market Value																															1
Equity Method Investment, Shares Purchased (in shares)											24,547
FTAC IV Sponsor [Member] | Founder Shares [Member]
Equity Method Investment, Shares Purchased (in shares)																										81,825
FTAC Olympus [Member]
Equity Method Investment, Aggregate Cost																															40
FTAC V Sponsor [Member]
Equity Method Investment, Aggregate Cost								$ 40
Equity Method Investment, Additional Shares Received for Services (in shares)								35,000
FTAC V Sponsor [Member] | Founder Shares [Member]
Equity Method Investment, Shares Purchased (in shares)																														140,000
FTAC VI Sponsor [Member]
Equity Method Investment, Additional Shares Received for Services (in shares)				35,000
Equity Method Investments				$ 40
FTAC Olympus Sponsor [Member]
Equity Method Investment, Shares Purchased (in shares)												399,741
Equity Method Investment, Additional Shares Received for Services (in shares)												19,987
Equity Method Investments												$ 40
FTAC Athena Sponsor [Member]
Equity Method Investments							$ 40
Equity Method Investment, Shares Received from Services Provided (in shares)							35,000
FTAC Hera Sponsor [Member]
Equity Method Investments		$ 40				$ 40
Equity Method Investment, Shares Received from Services Provided (in shares)						35,000
FTAC Parnassus Sponsor [Member]
Equity Method Investments					$ 40
Equity Method Investment, Shares Received from Services Provided (in shares)					35,000
FTAC Zeus Sponsor [Member]
Equity Method Investments			$ 40
Equity Method Investment, Shares Received from Services Provided (in shares)			35,000
FTAC Emerald Sponsor [Member]
Equity Method Investment, Shares Received from Services Provided (in shares)		35,000
Other SPAC Sponsor Entities [Member]
Equity Method Investment, Ownership Percentage																													1.90%
Equity Method Investments																						$ 0							$ 3,399	$ 38,095	$ 363
SPAC Fund [Member]
Equity Method Investment, Ownership Percentage																													67.00%
U.S. Insurance JV [Member]
Equity Method Investment, Ownership Percentage																													2.46%
CREO JV [Member]
Equity Method Investment, Ownership Percentage																													7.50%