Other Income (Expense), Net (Schedule Of Other Income (Expense), Net) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Other Income (Expense), Net [Abstract]
Realized loss on change in valuation of warrant liability		$ (16,807)	$ (11,678)
Reversal of interest expense and penalties on unrecognized tax liability settled	1,989
Reversal of accrued interest and penalty on state use tax audit	771
Amortization of deferred financing costs on convertible debt	(620)
Foreign exchange	(9)
Other non-operating income (expenses)	77	(443)	(373)
Total other Income (expense), net	$ 2,208	$ (17,250)	$ (12,051)