Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock Option Activity

Stock option activity under the Plan during the year ended December 31, 2019 is summarized below.

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at December 31, 2018		2,656,855		$	11.27
Exercised		(75,088	)		7.51
Forfeited		(66,040	)		9.68
Outstanding at December 31, 2019		2,515,727		$	11.42	5.04 years	$	19,115,278
Exercisable at December 31, 2019		1,030,331		$	11.03	4.92 years	$	8,232,263

Summary of Non-vested Stock Option Activity

The following is a summary of non-vested stock option activity for the Company for the years ended December 31, 2019, 2018, and 2017.

	Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2016		3,016,100		$	4.78
Vested		(340,362	)		4.36
Forfeited		(310,739	)		6.25
Non-vested at December 31, 2017		2,364,999			4.65
Vested		(308,373	)		7.51
Forfeited		(216,796	)		5.90
Non-vested at December 31, 2018		1,839,830			4.60
Vested		(288,394	)		4.20
Forfeited		(66,040	)		3.50
Non-vested at December 31, 2019		1,485,396		$	4.73

Restricted Stock Unit Activity

The following is a summary of non-vested RSU stock activity for the Company for the year ended December 31, 2019.

	Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2018		388,187		$	23.85
Granted		164,828			17.00
Vested		(84,608	)		23.23
Forfeited		(11,006	)		22.04
Non-vested at December 31, 2019		457,401		$	21.54

The following is a summary of non-vested Market RSU stock activity for the Company for the year ended December 31, 2019.

	Shares			Weighted Average Grant Date Fair Value
Non-vested at December 31, 2018		2,709,202		$	9.87
Granted		500,000			8.81
Forfeited		(54,878	)		9.21
Non-vested at December 31, 2019		3,154,324		$	8.44	1

¹ Adjusted for modification in 2019, as described below.