Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Current:
Federal	$ 16,118	$ 7,061	$ (29,544)
State and local	3,694	2,392	869
Foreign	4,934	27,565	25,448
Total current	24,746	37,018	(3,227)
Deferred:
Federal	34,237	21,355	37,646
State and local	863	5,455	7,549
Foreign	12,087	904	1,087
Total deferred	47,187	27,714	46,282
Income taxes relating to continuing operations	$ 71,933	$ 64,732	$ 43,055