Employee Benefit Plans - Amounts Recognized in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Other long-term asset	$ 8,440	$ 8,573
Other current liability	(9,213)	(9,280)
Pension and other post-retirement liabilities	(233,891)	(228,579)
Amounts recognized in consolidated balance sheets	$ (234,664)	$ (229,286)

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Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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