Income Taxes - Schedule of Effective Income Tax Rate Reconciliation (Detail)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
U.S. Federal statutory tax rate	35.00%	35.00%	34.00%
State and local taxes, net	2.20%	0.70%	0.60%
Transaction expense	(3.70%)	(1.70%)	(1.10%)
Loss on convertible debt	(0.60%)	(2.10%)	(1.10%)
Change in valuation allowance	(3.20%)	(1.40%)	(0.60%)
Nontaxable purchase price adjustment	2.20%	0.00%	0.00%
Fuel and employment tax credits	2.00%	0.00%	0.00%
Change in uncertain tax position provision	0.50%	0.40%	0.30%
U.S. taxation of foreign earnings	(2.40%)	0.00%	0.00%
Loss on remeasurement of foreign activities	2.60%	0.00%	0.00%
Foreign tax rate differences	0.00%	(0.50%)	(0.20%)
All other non-deductible items	(2.40%)	(1.30%)	(0.20%)
Net effective tax rate	32.20%	29.10%	31.70%