Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ 6,101	$ (4,704)	$ 13,852	$ (11,430)
Other comprehensive income (loss):
Foreign currency translation adjustments	(1,672)	(2,950)	(2,353)	(2,868)
Amortization of actuarial losses from pension plan	18	6	56	18
Total other comprehensive (loss)	(1,654)	(2,944)	(2,297)	(2,850)
Comprehensive income (loss)	$ 4,447	$ (7,648)	$ 11,555	$ (14,280)