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Consolidated Statements of Comprehensive Income (Unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Statement of Comprehensive Income [Abstract]    
Net income (loss) $ (2,791) $ (1,422)
Other comprehensive loss, net of tax:    
Unrealized gain on available-for-sale securities 0 (2)
Foreign currency translation adjustment (676) (4,835)
Unrealized loss on derivative instruments (20) (13)
Other comprehensive loss, net of tax (696) (4,846)
Total comprehensive loss $ (3,487) $ (6,268)