Income Taxes (Schedule of Effective 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]
Tax benefit at U.S. Statutory Rate of 35%	$ 5,435	$ 9,524	$ 4,321
State and local income taxes, net of federal income tax	155	34,605	(2,802)
Equity in net income of affiliates	(13,589)	(12,019)	(37,215)
Extraterritorial income exclusion	6,177	11,200
Domestic production activity benefit	2,317
Provision for unrecognized tax benefits	(332)	46,542	(1,137)
interest on deferred installment sales	(1,296)
Nondeductible expenses	(762)	(603)	(1,906)
Change in valuation allowance	(121)	2,311	684
Research and development credit	402	99
Other, net	(227)	1,656	(3,320)
Income tax (provision) benefit	$ (1,841)	$ 93,315	$ (41,375)
Tax benefit at U.S. Statutory Rate	35.00%