Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Changes in accumulated other comprehensive income, net of tax
Balance at the beginning of period	$ 5,020
Other comprehensive loss before reclassifications	53
Amounts reclassified from accumulated other comprehensive income	24
Net current-period other comprehensive income	77
Balance at the end of period	5,097
Foreign currency
Changes in accumulated other comprehensive income, net of tax
Balance at the beginning of period	5,375
Other comprehensive loss before reclassifications	53
Net current-period other comprehensive income	53
Balance at the end of period	5,428
Defined benefit pension plan
Changes in accumulated other comprehensive income, net of tax
Balance at the beginning of period	(355)
Amounts reclassified from accumulated other comprehensive income	24
Net current-period other comprehensive income	24
Balance at the end of period	$ (331)