Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Accumulated Other Comprehensive Loss
Balance at beginning of period	$ (5,302)	$ (1,655)
Other comprehensive income (loss) before reclassifications	2,685	(529)
Amounts reclassified out of AOCL	(193)	(626)
Net current period activity	2,492	(1,155)
Balance at end of period	(2,810)	(2,810)
Foreign Currency Translation
Accumulated Other Comprehensive Loss
Balance at beginning of period	(5,514)	(2,024)
Other comprehensive income (loss) before reclassifications	1,817	(1,673)
Net current period activity	1,817	(1,673)
Balance at end of period	(3,697)	(3,697)
Unrealized Gain on Foreign Currency Derivatives
Accumulated Other Comprehensive Loss
Balance at beginning of period	256	373
Other comprehensive income (loss) before reclassifications	105	421
Amounts reclassified out of AOCL	(193)	(626)
Net current period activity	(88)	(205)
Balance at end of period	168	168
Unrealized Gain (Loss) on Available for Sale Securities
Accumulated Other Comprehensive Loss
Balance at beginning of period	(44)	(4)
Other comprehensive income (loss) before reclassifications	763	723
Net current period activity	763	723
Balance at end of period	$ 719	$ 719