Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			$ (306)	$ (550)
Other comprehensive income (loss) before reclassifications			1,894	0
Amounts reclassified from accumulated other comprehensive loss			(427)	0
Total changes in other comprehensive loss	1,184	680	1,467	0
Balance at balance sheet date	1,161	(550)	1,161	(550)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			(325)	(746)
Other comprehensive income (loss) before reclassifications			(271)	(7)
Amounts reclassified from accumulated other comprehensive loss			0	0
Total changes in other comprehensive loss			(271)	(7)
Balance at balance sheet date	(596)	(753)	(596)	(753)
Unrealized Holding Gains on Marketable Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			42	196
Other comprehensive income (loss) before reclassifications			25	7
Amounts reclassified from accumulated other comprehensive loss			0	0
Total changes in other comprehensive loss			25	7
Balance at balance sheet date	67	203	67	203
Unrealized Gains (Losses) on Foreign Currency Forward Contracts
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at balance sheet date			(23)	0
Other comprehensive income (loss) before reclassifications			2,140	0
Amounts reclassified from accumulated other comprehensive loss			(427)	0
Total changes in other comprehensive loss			1,713	0
Balance at balance sheet date	$ 1,690	$ 0	$ 1,690	$ 0