Commitments and Contingencies (Details) - Predecessor gal in Thousands, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Dec. 31, 2010 gal	Dec. 31, 2016 USD ($)
Site Contingency [Line Items]
Increase (decrease) in provision for environmental remediation costs	$ 1,006	$ 128	$ 1,006	$ 128
Accrued environmental liabilities	4,365		4,365			$ 3,672
Other environmental issues
Site Contingency [Line Items]
Accrued environmental liabilities	220		220			352
River Rouge | Oil release from flange failure in 1964
Site Contingency [Line Items]
Increase (decrease) in provision for environmental remediation costs	989	28	989	28
Accrued environmental liabilities	2,515		$ 2,515			1,700
River Rouge | Oil release from flange failure in 1964 | Maximum
Site Contingency [Line Items]
Time frame to resolve contingency			20 years
River Rouge | Gasoline release in 2010
Site Contingency [Line Items]
Increase (decrease) in provision for environmental remediation costs	99	$ 186	$ 99	$ 186
Accrued environmental liabilities	$ 1,630		$ 1,630			$ 1,620
Loss volume | gal					90
River Rouge | Gasoline release in 2010 | Maximum
Site Contingency [Line Items]
Time frame to resolve contingency			10 years