Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income tax provision	$ 4,943	$ 3,370
Pre-tax income	$ 6,893	$ 13,687
Effective income tax rate	71.70%	24.60%
Discrete tax expense		$ 1,700

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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