Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 2,166	$ (47,667)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	323	(7,683)
Actuarial losses related to defined benefit pension plans	(19)	(15)
Unrealized losses on investment arising during period	0	(339)
Reclassification adjustment from sale of investment	328	0
Total other comprehensive income (loss)	632	(8,037)
Total comprehensive income (loss)	$ 2,798	$ (55,704)