Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Consolidated Statements of Comprehensive Income
Net income	$ 2,151	$ 6,101	$ 7,036	$ 13,852
Other comprehensive income (loss):
Foreign currency translation adjustments	936	(1,672)	1,529	(2,353)
Amortization of actuarial gains from pension plan	26	18	78	56
Total other comprehensive income (loss)	962	(1,654)	1,607	(2,297)
Comprehensive income	$ 3,113	$ 4,447	$ 8,643	$ 11,555