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Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Consolidated Statements of Comprehensive Income (Loss)
Net income (loss)	$ (122,210)	$ (31,978)	$ (66,940)
Available-for-sale securities:
Change in net unrealized gains or losses	(6)	(49)	51
Reclassification adjustments for net (gains) losses included in net income	18		(65)
Net changes related to available-for-sale securities	12	(49)	(14)
Minimum pension liability:
Change in minimum pension liability		15	(145)
Reclassification adjustments for net (gains) losses included in net income	866
Net changes related to minimum pension liability	866	15	(145)
Currency translation adjustments:
Change in currency translation adjustments	(19)	(87)	149
Reclassification adjustments for net (gains) losses included in net income	(430)		(3,142)
Net changes related to currency translation adjustments	(449)	(87)	(2,993)
Other comprehensive income (loss), net of tax	429	(121)	(3,152)
Total comprehensive income (loss)	$ (121,781)	$ (32,099)	$ (70,092)

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