Stock-Based Compensation - (Tables)

6 Months Ended

Jun. 30, 2021

Share-based Payment Arrangement [Abstract]

Summary of Stock Options Activity

A summary of the stock option activity for the six months ended June 30, 2021 is presented below:

	Number of Shares	Weighted Average Exercise Price
Outstanding at January 1, 2021	4,200,341	$	4.82
Granted	—	$	—
Exercised	(3,128,798)	$	3.39
Forfeited	—	$	14.00
Expired	(76,306)	$	14.00
Outstanding at June 30, 2021	995,237	$	8.61
Exercisable at June 30, 2021	995,237	$	8.61

Summary of RSUs Activity

The following table summarizes RSUs activity during the six months ended June 30, 2021:

	Number of Shares	Weighted Average Grant Date Fair Value
Outstanding at January 1, 2021	1,165,369	$	8.50
Granted	787,287	$	9.85
Vested	(570,428)	$	8.58
Forfeited	(2,037)	$	10.96
Canceled	—	$	—
Outstanding at June 30, 2021	1,380,191	$	9.23

Summary of Performance Shares Activity

The following table summarizes information about PSUs activity during the six months ended June 30, 2021:

Period Granted	Target Shares Outstanding at January 1, 2021		Target Shares Granted		Target Shares Vested		Target Shares Forfeited		Target Shares Outstanding at June 30, 2021		Weighted Average Grant Date FV Per Share
2018	84,322		—		(84,322)		—		—		$	27.51
2019	126,318		—		—		—		126,318		$	27.49
2020	808,638		—		—		—		808,638		$	8.30
2021	—		553,876		—		—		553,876		$	15.37
Total	1,019,278		553,876		(84,322)		—		1,488,832		$	12.56
Weighted Average FV Per Share	$	12.27	$	15.37	$	27.51	$	—	$	12.56