Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net loss	$ (9,376)	$ (1,181)	$ (18,717)	$ (862)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	2,913	(217)	5,526	632
Defined benefit pension plan, net of tax:
Amortization of deferred loss, net of tax benefit of $2 for the three months ended June 30, 2015; net of tax benefit of $4 for the six months ended June 30, 2015	9	0	18	0
Amortization of prior service cost, net of tax benefit of $7 and $7 for the three months ended June 30, 2015 and 2014, respectively; net of tax benefit of $14 and $14 for the six months ended June 30, 2015 and 2014, respectively	29	29	57	58
Other comprehensive income (loss), net of tax	2,951	(188)	5,601	690
Comprehensive loss	$ (6,425)	$ (1,369)	$ (13,116)	$ (172)