Consolidated Statements of Comprehensive Income (Loss) (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net income (loss)	$ 7,288	$ 3,776	$ 11,433	$ (3,138)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	(2,392)	898	(1,238)	2,484
Other comprehensive income (loss)	(2,392)	898	(1,238)	2,484
Total comprehensive income (loss)	$ 4,896	$ 4,674	$ 10,195	$ (654)