Income Taxes (Schedule Of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current provision (benefit), Federal									$ (6,137)	$ 3,872	$ 3,804
Current provision (benefit), State and local									2,145	34	4,156
Current provision (benefit), Foreign									873	2,566	2,228
Total current provision (benefit)									(3,119)	6,472	10,188
Deferred provision (benefit), Federal									41,832	45,920	85,106
Federal net operating loss									14,369	11,166	(40,057)
Deferred provision (benefit), State and local									5,608	5,270	4,544
Deferred provision (benefit), Foreign									(3,478)	(2,420)	(152)
Total deferred provision									58,331	59,936	49,441
Income tax provision	$ 9,669	$ 22,821	$ 19,952	$ 2,770	$ 11,881	$ 15,854	$ 22,897	$ 15,776	$ 55,212	$ 66,408	$ 59,629