Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net income	$ 80,296	$ 7,887	$ 74,526
Other comprehensive loss, net of tax
Foreign currency translation adjustments	(44,569)	(26,948)	(17,504)
Reclassification of cumulative translation adjustment associated with liquidated subsidiaries	0	0	787
Unrealized gain (loss) on available-for-sale investments	611	(1,884)	0
Reclassification adjustment associated with unrealized loss realized upon the write-down of available-for-sale investments	0	1,884	0
Pension liability adjustments, net of income tax expense (benefit) of $45, $71, and $(37) for year ended December 31, 2015, 2014, and 2013	(142)	(150)	202
Other comprehensive loss	(44,100)	(27,098)	(16,515)
Comprehensive income (loss)	$ 36,196	$ (19,211)	$ 58,011