Income Taxes (Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Taxes [Abstract]
Statutory Federal benefit	$ (58,307)	$ (5,481)	$ (20,027)
Foreign tax expense	3,534	3,844	2,870
State and local taxes benefit	(230)	138	(1,875)
Non-deductible non-cash compensation	4,892	5,644	2,605
Foreign dividend income		3,700
Foreign tax rate change		1,374	(4,960)
Foreign exchange rate changes	9,212	(799)
Other	3,200	(216)	2,458
Valuation allowance	46,760	431	17,620
Total provision (benefit) for income taxes	$ 9,061	$ 8,635	$ (1,309)