CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 11,237	$ 1,881	$ 5,462	$ (285)
Other comprehensive income (loss):
Foreign currency translation adjustments	6,318	(9,417)	9,219	(19,873)
Total other comprehensive income (loss)	6,318	(9,417)	9,219	(19,873)
Comprehensive income (loss)	$ 17,555	$ (7,536)	$ 14,681	$ (20,158)