Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Changes in accumulated other comprehensive loss, net of tax
Balance at the beginning of period	$ 5,739
Other comprehensive loss before reclassifications	(677)
Amounts reclassified from accumulated other comprehensive loss	6
Net current-period other comprehensive income (loss)	(671)
Balance at the end of period	5,068
Foreign currency
Changes in accumulated other comprehensive loss, net of tax
Balance at the beginning of period	6,070
Other comprehensive loss before reclassifications	(677)
Net current-period other comprehensive income (loss)	(677)
Balance at the end of period	5,393
Defined benefit pension plan
Changes in accumulated other comprehensive loss, net of tax
Balance at the beginning of period	(331)
Amounts reclassified from accumulated other comprehensive loss	6
Net current-period other comprehensive income (loss)	6
Balance at the end of period	$ (325)