Share-Based Compensation - Schedule of Weighted Average Grant Date Fair Values of Awards Using Monte Carlo Simulation Valuation Model (Parenthetical) (Detail)	3 Months Ended
	Mar. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Weighted average expected volatility	28.40%
Dividend yield	0.00%	[1]

[1] Dividends are assumed to be reinvested in shares of common stock and dividends will not be paid unless shares vest. We utilized a dividend yield of zero percent.