Income Taxes - Classification of Net Deferred Income Tax Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items]
Net deferred income tax assets	$ 11,406
Net deferred income tax (liabilities)		$ (16,916)
Other noncurrent assets
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items]
Net deferred income tax assets	67,900	49,937
Other noncurrent liabilities
Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items]
Net deferred income tax (liabilities)	$ (56,494)	$ (66,853)

Balance Sheet Classification of Deferred Income Tax Assets and Liabilities [Line Items]

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