Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Effective tax rate from continuing operations	42.60%		26.10%	38.70%	30.60%
Valuation allowance	$ 1,700			$ 1,700
Net deferred tax assets	107,293	$ 106,300		107,293
Valuation allowance against state net operating loss carryforwards		860
Unrecognized tax benefits	$ 127	$ 167		$ 127