Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands		12 Months Ended
	Jul. 01, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Deferred tax benefit resulting from the Company becoming subject to U.S. corporate income taxes	$ 103,500	$ 0	$ 0	$ 103,499
Net deferred tax assets		151,225	154,759
Unrecognized tax benefits that would impact effective tax rate if recognized		3,600	2,200
U.S. Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards		27,700	133,500
Deferred tax asset not subject to expiration		9,700	46,700
Deferred tax asset, valuation allowance, not subject to expiration		6,500	6,800
Deferred income tax asset		24,600	19,500
State and Local
Income Tax Contingency [Line Items]
Deferred tax asset not subject to expiration		8,800	18,500
Deferred tax asset, valuation allowance, not subject to expiration		12	8,100
Foreign
Income Tax Contingency [Line Items]
Operating loss carryforwards		114,600	90,600
Deferred income tax asset		$ 24,600	19,500
Knight
Income Tax Contingency [Line Items]
Deferred tax assets	$ 65,465
Knight | U.S. Federal
Income Tax Contingency [Line Items]
Operating loss carryforwards			$ 28,500