Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Components of income tax expense (benefit)
U.S. state current income tax expense (benefit)	$ 69	$ 244	$ 372	$ (53)
Federal current income tax benefit		(138)		(1)
Foreign current income tax expense (benefit)	(54)	(385)	286	1,553
Foreign deferred income tax expense (benefit)	(74)	700	121	548
Total	$ (59)	$ 421	$ 779	$ 2,047