Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Taxes [Line Items]
Unrecognized tax benefits, interest expense	$ 0		$ 900,000	$ 100,000
Effective income tax rate from continuing operations	35.60%	32.20%	16.30%	32.90%
Discrete item			$ 2,000,000
Cash distribution from foreign subsidiaries to parent	$ 72,500,000
Maximum
Income Taxes [Line Items]
Unrecognized tax benefits, interest expense		$ 100,000