Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current
Federal	$ 0	$ (1,310)	$ (69)
State	783	2,022	(195)
Foreign	3,328	7,371	10,318
Total current	4,111	8,083	10,054
Deferred
Federal	0	191	(1,509)
State	(610)	(1,613)	3,784
Foreign	(1,198)	1,043	(2,625)
Total deferred	(1,808)	(379)	(350)
Total tax provision (benefit)	2,303	7,704	9,704
Effective Income Tax Rate Reconciliation Detail [Table]
Income tax provision (benefit) computed at statutory federal income tax rates	(82,982)	(70,617)	(55,254)
State income taxes (net of federal benefit)	(2,960)	(608)	(1,730)
Nondeductible expenses	419	909	1,433
Impact of international operations	7,567	(1,880)	(7,408)
Goodwill impairments	12,990	20,412	7,442
Valuation allowance	58,846	55,392	67,781
Other	8,423	4,096	(2,560)
Total tax provision (benefit)	2,303	7,704	9,704
Undistributed earnings intended for investment	0
Domestic and Foreign Income Before Tax Detail [Table]
Domestic	(235,394)	(195,815)	(138,640)
International	(1,696)	(5,948)	(19,231)
Total	(237,090)	(201,763)	(157,871)
Unrecognized Tax Benefit Liability Rollforward Detail [Table]
Gross unrecognized tax benefits at beginning of period	1,955	1,959	2,018
Decreases in tax positions for prior years	0	0	0
Increases in tax positions for current year	16	120	191
Lapse in statute of limitations	(378)	(124)	(250)
Gross unrecognized tax benefits at end of period	1,593	1,955	1,959
Recognized interest and penalties	(100)	300	200
Accrued potential interest and penalties	2,300	2,400
Amount of unrecognized tax benefits that would affect effective tax rate	3,200	3,500
Deferred tax assets:
Net operating losses	125,358	91,973
Foreign tax credits and alternative minimum tax credits	28,929	19,772
Accruals	30,795	30,033
Income recognized for tax not booked	1,793	2,608
All other	8,362	8,686
Total deferred tax assets	195,237	153,072
Valuation allowance	(185,275)	(126,673)
Net deferred tax assets	9,962	26,399
Deferred tax liabilities:
Excess book over tax basis in property, plant, and equipment	17,012	34,146
All other	218	1,695
Total deferred tax liability	17,230	35,841
Net deferred tax liability	7,268	9,442
Increase (decrease) in valuation allowance	58,600	$ 53,000	$ 69,900
Foreign and state net operating loss carryforwards	125,400
Foreign tax credits	$ 28,900