Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Assets:
Foreign currency forward exchange contracts			$ 16
Liabilities:
Foreign currency forward exchange contracts			109
Net (loss) gain on foreign currency forward exchange contracts	(902)	901
Notional amount of foreign currency derivatives	39,068		30,280
Fair Value
Assets:
Foreign currency forward exchange contracts	18
Total Assets	18
Liabilities:
Foreign currency forward exchange contracts	138
Total Liabilities	138
Level 1
Assets:
Foreign currency forward exchange contracts	0
Total Assets	0
Liabilities:
Foreign currency forward exchange contracts	0
Total Liabilities	0
Level 2
Assets:
Foreign currency forward exchange contracts	18
Total Assets	18
Liabilities:
Foreign currency forward exchange contracts	138
Total Liabilities	138
Level 3
Assets:
Foreign currency forward exchange contracts	0
Total Assets	0
Liabilities:
Foreign currency forward exchange contracts	0
Total Liabilities	$ 0