Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Vested and Unvested Restricted Stock Units Outstanding

The following table summarizes information about vested and unvested restricted stock units, excluding cash-settled EBI units discussed above, outstanding at June 30, 2019 and 2018:

	Six Months Ended June 30,
	2019				2018
	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	1,140,215		$	21.96	1,214,325		$	19.97
Grants	165,761		34.03		110,466		40.02
Released and distributed (vested)	(195,755	)	25.62		(181,903	)	22.09
Forfeited/expired	(9,581	)	24.72		(7,060	)	21.81
Balance at end of period	1,100,640		$	25.53	1,135,828		$	21.59