Stockholders' Equity - Schedule of Change In Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance			$ 33,985
Other comprehensive loss before reclassifications, net of tax	$ (1,124)		(1,999)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0		0
Net current period other comprehensive income (loss)	(1,124)		(1,999)
Ending Balance	21,601		21,601
Defined Benefit Pension and Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	34		34
Other comprehensive loss before reclassifications, net of tax	0		0
Amounts reclassified from accumulated other comprehensive loss, net of tax	0		0
Net current period other comprehensive income (loss)	0		0
Ending Balance	34		34
Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(3,578)		(2,703)
Other comprehensive loss before reclassifications, net of tax	(1,124)		(1,999)
Amounts reclassified from accumulated other comprehensive loss, net of tax	0		0
Net current period other comprehensive income (loss)	(1,124)		(1,999)
Ending Balance	(4,702)		(4,702)
AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(3,544)		(2,669)
Ending Balance	$ (4,668)		$ (4,668)
Predecessor
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive loss before reclassifications, net of tax		$ (685)		$ (1,685)
Amounts reclassified from accumulated other comprehensive loss, net of tax		214		428
Net current period other comprehensive income (loss)		(471)		(1,257)
Predecessor | Defined Benefit Pension and Postretirement Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		(9,583)		(9,797)
Other comprehensive loss before reclassifications, net of tax		0		0
Amounts reclassified from accumulated other comprehensive loss, net of tax		214		428
Net current period other comprehensive income (loss)		214		428
Ending Balance		(9,369)		(9,369)
Predecessor | Foreign Currency Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		(17,142)		(16,142)
Other comprehensive loss before reclassifications, net of tax		(685)		(1,685)
Amounts reclassified from accumulated other comprehensive loss, net of tax		0		0
Net current period other comprehensive income (loss)		(685)		(1,685)
Ending Balance		(17,827)		(17,827)
Predecessor | AOCI Attributable to Parent
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance		(26,725)		(25,939)
Ending Balance		$ (27,196)		$ (27,196)