Note 24 - Income Taxes - Taxable Income and Provisions for Income Taxes (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income/(loss) before income taxes – U.S.		$ 26,421	$ 1,051	$ (1,682)
Deferred				(1,100)
Federal tax (provision)/benefit		(2,752)	(1,457)	2,968
State and local tax provision		(408)	(14)	(45)
Total tax (provision)/benefit – U.S.		3,380	978	(3,317)
Net income		849,696	1,002,877	413,561
Loss before taxes – Non-U.S.		(63)	(64)	(599)
Taxable REIT Subsidiaries [Member]
Current		(2,656)	(482)	3,362
Deferred		312	539	(349)
Federal tax (provision)/benefit		(2,344)	57	3,013
Current		(456)	(48)	(26)
Deferred		48	34	(19)
Total tax (provision)/benefit – U.S.		(2,752)	43	2,968
Net income		23,669	1,094	1,286
Current	[1]	(0)	(479)	69
Deferred		529	(0)	(418)
Non-U.S. tax (provision)/benefit		$ (529)	$ 479	$ 349

[1] The year ended December 31, 2018 includes a charge of $1.6 million related to the recording of a deferred tax valuation allowance.