Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	$ 5,751	$ 193	$ 4,460	$ 174
Increase to the valuation allowance for U.S. deferred tax assets	7,600		$ 7,600
Statutory rate			34.00%	34.00%
Deferred tax assets, net of deferred tax liabilities	17,300		$ 17,300
Deferred tax assets, valuation allowance	8,300		$ 8,300		$ 600
Domestic deferred tax assets ratable reversal pattern period			15 years
Operating loss carry forward, expiration period			The carry forward rules allow for up to a 20 year carry forward of net operating losses
Net operating loss carry forward period			20 years
Average period required to utilize future income			27 years 6 months
Weighted average valuation allowance of income tax			$ 7,600
Gross unrecognized tax benefit	$ 800		$ 800		$ 800