Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
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Fair value portion of assets classified as held for sale.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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Fair Value Measurement - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2017	Jul. 21, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets held for sale		$ 0	$ 616
Selling price less selling costs		254	$ 0
Global Truck & Bus \| Level 2 \| OHIO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of assets held for sale	$ 600
Selling price less selling costs	$ 800
Shadyside Facility \| Scenario, Forecast \| Subsequent Event
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Sale of property				$ 2,500	$ 2,500
Shadyside Facility \| Fair Value, Measurements, Nonrecurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets held for sale		2,200
Shadyside Facility \| Fair Value, Measurements, Nonrecurring \| Land and Building \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets held for sale		1,700
Shadyside Facility \| Fair Value, Measurements, Nonrecurring \| Other Machinery and Equipment \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of assets held for sale		$ 500