Income Taxes (Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Abstract]
Statutory federal expense	$ (3,727)	$ 39,247	$ 10,854
Rate and permanent differences on non-U.S. earnings	(7,531)	15,937	3,620
State and local tax expense	(3,707)	7,578	4,824
REIT adjustment	(35,539)	(28,975)	(22,241)
Permanent differences	(736)	18	437
Tax Act impact on deferred taxes			(6,040)
Other	439	1,649	518
Valuation allowance	9,005	4,151	12,261
Total provision (benefit) for income taxes	$ (41,796)	$ 39,605	$ 4,233