Income Taxes (Components Of Provision For Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Income Taxes [Abstract]
Current provision for taxes, Federal			$ (127)
Current provision for taxes, Foreign	1,608	897	69
Current provision for taxes, State	2,191	845	730
Total current	3,799	1,742	672
Deferred (benefit) provision for taxes, Federal income taxes	(38,303)	(59,363)	(46,835)
Deferred (benefit) provision for taxes, State and local taxes	(5,111)	(6,083)	(5,314)
Deferred (benefit) provision for taxes, Foreign tax	(1,104)	(388)	220
Deferred (benefit) provision for taxes, Increase in valuation allowance	42,832	65,097	51,749
Deferred income tax expense benefits	(1,686)	(737)	(180)
Total provision for income taxes	$ 2,113	$ 1,005	$ 492