Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Vested and Unvested Restricted Stock Units Outstanding

The following table summarizes information about vested and unvested restricted stock units outstanding at December 31, 2016:

	For the year ended
	December 31,
	2017					2016
	Restricted Stock Units Outstanding			Weighted Average Grant Date Fair Value		Restricted Stock Units Outstanding			Weighted Average Grant Date Fair Value
Balance at beginning of period		1,200,840		$	19.00		—
Conversion of deferred compensation plan		—			19.00		157,895			19.00
Conversion of equity based incentive (EBI) plans		—			19.00		125,684			19.00
Grants		123,169			35.15		1,077,066			19.00
Released and distributed (vested)		(103,639	)		21.25		(157,748	)		19.00
Forfeited/expired		(6,045	)		19.00		(2,057	)		19.00
Balance at end of period		1,214,325		$	19.97		1,200,840			19.00