Schedule of Change in Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Income Tax Uncertainties [Abstract]
Unrecognized income tax benefits at January 1, 2019	$ 4,059
Increase related to positions taken in prior period	26
Increase related to positions taken in current period	315
Decrease related to expiration of statute of limitations	(2,837)
Unrecognized income tax benefits at December 31, 2019	1,563
Accrued interest	163	$ 700
Unrecognized income tax benefits recorded in other long-term liabilities at December 31, 2019	$ 1,726

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Amount recognized for uncertainty in income taxes classified as noncurrent.

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Amount of unrecognized tax benefits.

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Amount of increase in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

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Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

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Amount of interest expense accrued for an underpayment of income taxes.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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