Derivative Financial Instruments - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended	12 Months Ended
	Mar. 31, 2008	Dec. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Derivative [Line Items]
Maximum length of time to hedge exposure to foreign currency exchange risk			1 year
Maximum length of time to hedge exposure to price fluctuations in material commodities			2 years
One-time pre-tax gain			$ 2,180,000	$ (1,762,000)
Final cash settlement payment					$ 7,593,000
Foreign Currency Derivatives
Derivative [Line Items]
Notional Value			29,273,000	29,538,000
Commodity Derivatives
Derivative [Line Items]
Notional Value			404,000	407,000
One-time pre-tax gain			256,000	77,000
Interest Rate Swap
Derivative [Line Items]
Hedge Ineffectiveness Incurred			$ 0	$ 0
Interest Rate Swap | Automotive Segments
Derivative [Line Items]
Derivative maturity period	10 years
Currency Related Swap
Derivative [Line Items]
One-time pre-tax gain		$ 9,949,000
Final cash settlement payment		$ 7,593,000