Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			$ 917	$ (306)
Other comprehensive (loss) income before reclassifications			(20)	300
Amounts reclassified from accumulated other comprehensive loss			(2,604)	(17)
Total changes in other comprehensive loss	$ (2,498)	$ 274	(2,624)	283
Balance at balance sheet date	(1,707)	(23)	(1,707)	(23)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			(971)	(325)
Other comprehensive (loss) income before reclassifications			1,220	353
Amounts reclassified from accumulated other comprehensive loss			0	0
Total changes in other comprehensive loss			1,220	353
Balance at balance sheet date	249	28	249	28
Unrealized Holding Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			(123)	42
Other comprehensive (loss) income before reclassifications			130	55
Amounts reclassified from accumulated other comprehensive loss			0	0
Total changes in other comprehensive loss			130	55
Balance at balance sheet date	7	97	7	97
Unrealized Gains (Losses) on Foreign Currency Forward Contracts
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			2,011	(23)
Other comprehensive (loss) income before reclassifications			(1,370)	(108)
Amounts reclassified from accumulated other comprehensive loss			(2,604)	(17)
Total changes in other comprehensive loss			(3,974)	(125)
Balance at balance sheet date	$ (1,963)	$ (148)	$ (1,963)	$ (148)