Income Taxes (Income Tax Rate Reconciliation) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Statutory Federal benefit	$ (20,027)	$ (61,982)	$ (43,673)
Foreign tax expense	2,870	1,878	1,576
State and local taxes benefit	(1,875)	(7,181)	(1,898)
Non-deductible non-cash compensation	2,605	987
Foreign tax rate change	(4,960)
Other	2,458	4,280	3,276
Valuation allowance	17,620	68,612	42,832
Total (benefit) provision for income taxes	$ (1,309)	$ 6,594	$ 2,113