Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Restricted Stock Awards ("RSAs")

Restricted Stock Awards (“RSAs”) generally vest in annual installments between one and three years from each grant date. The following table provides a summary of RSAs for the year ended December 31, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested at January 1, 2017		—		$	—
Granted		594,213			26.52
Vested		(106,795	)		26.85
Forfeited		(25,779	)		26.22
Unvested at December 31, 2017		461,639		$	26.47

Schedule of Performance Stock Units ("PSUs")

The following table provides a summary of PSUs for the year ended December 31, 2017:

	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested at January 1, 2017	—			$                         —
Granted		387,642			31.95
Vested		—			—
Forfeited		(16,085	)		31.73
Unvested at December 31, 2017		371,557		$	31.96

Schedule of Grant Date Fair Values of Awards Using Monte Carlo Simulation Valuation Model

The grant date fair values of these awards were determined using a Monte Carlo simulation valuation model with the following assumptions:

Expected volatility(1)	25.5% - 29.5%
Dividend yield(2)		—
Risk-free rate	1.2% - 1.5%
Expected term	2 - 3 years

⁽¹⁾ Due to limited trading history of our common stock, we used the historical and implied volatilities of our peer group in addition to our historical volatility over the performance period to estimate appropriate expected volatilities.

⁽²⁾ Dividends are assumed to be reinvested in shares of our common stock and dividends will not be paid unless shares vest.