Note 22 - Income Taxes - Statutory Income Tax to Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Federal (provision)/benefit at statutory tax rate (1) (2)	[1],[2]	$ (221)	$ 3,010	$ (2,490)
State and local provision, net of federal benefit (3) (4)	[3],[4]	(1,236)	(42)	(386)
Total tax (provision)/benefit – U.S.		$ (1,457)	$ 2,968	$ (2,876)

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

[2] The year ended December 31, 2019 includes a tax benefit from AMT credit refunds of $3.7 million and $1.1 million related to the recording of a deferred tax valuation allowance.

[3] The year ended December 31, 2018 includes a charge of $0.3 million related to the recording of a deferred tax valuation allowance.

[4] The year ended December 31, 2020 includes $1.5 million of estimated state and local tax provision related to the REIT operations.