Stockholders' Equity (Deficit) - Schedule of Change In Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2016	Aug. 31, 2017	Sep. 30, 2016
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive loss before reclassifications, net of tax	$ (2,362)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0
Net current period other comprehensive income (loss)	(2,362)
Adjustment for fresh-start accounting	0
Ending Balance	2,628
Defined Benefit Pension and Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0
Other comprehensive loss before reclassifications, net of tax	0
Amounts reclassified from accumulated other comprehensive loss, net of tax	0
Net current period other comprehensive income (loss)	0
Adjustment for fresh-start accounting	0
Ending Balance	0	$ 0		$ 0
Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0
Other comprehensive loss before reclassifications, net of tax	(2,362)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0
Net current period other comprehensive income (loss)	(2,362)
Adjustment for fresh-start accounting	0
Ending Balance	(2,362)	0		0
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0
Ending Balance	(2,362)	0		0
Predecessor
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance				(35,127)
Other comprehensive loss before reclassifications, net of tax		2,070	$ 2,967	385	$ (497)
Amounts reclassified from accumulated other comprehensive loss, net of tax		(1,436)	456	(1,008)	1,368
Net current period other comprehensive income (loss)		634	3,423	(623)	871
Adjustment for fresh-start accounting		26,562	0	26,562	0
Predecessor | Defined Benefit Pension and Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0	(9,369)	(16,273)	(9,797)	(17,185)
Other comprehensive loss before reclassifications, net of tax		0	0	0	0
Amounts reclassified from accumulated other comprehensive loss, net of tax		(1,436)	456	(1,008)	1,368
Net current period other comprehensive income (loss)		(1,436)	456	(1,008)	1,368
Adjustment for fresh-start accounting		10,805	0	10,805	0
Ending Balance		0	(15,817)	0	(15,817)
Predecessor | Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0	(17,827)	(20,100)	(16,142)	(16,636)
Other comprehensive loss before reclassifications, net of tax		2,070	2,967	385	(497)
Amounts reclassified from accumulated other comprehensive loss, net of tax		0	0	0	0
Net current period other comprehensive income (loss)		2,070	2,967	385	(497)
Adjustment for fresh-start accounting		15,757	0	15,757	0
Ending Balance		0	(17,133)	0	(17,133)
Predecessor | AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 0	(27,196)	(36,373)	(25,939)	(33,821)
Ending Balance		$ 0	$ (32,950)	$ 0	$ (32,950)