Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Restricted Stock Unit and Restricted Performance Stock Unit Activity

Restricted stock unit and restricted performance stock unit activity for the three months ended March 31, 2021 is summarized in the following table:

	Equity Incentive Awards
	Restricted Stock Units			Weighted Average Grant Date Fair Value		Performance Shares			Weighted Average Grant Date Fair Value		Options		Weighted Average Exercise Price
Balance at December 31, 2020		1,213,667		$	3.59		2,176,290		$	4.88		24,000	$	20.39
Granted		1,787			5.41		21,352			5.67		—		—
Settled		(388,504	)		4.05		(193,778	)		5.45		—		—
Forfeited or expired		(31,092	)		8.25		(142,769	)		12.96		—		—
Balance at March 31, 2021		795,858		$	3.19		1,861,095		$	6.05		24,000	$	20.39
Awards estimated to vest in the future		724,142		$	3.16		1,341,900		$	6.09		24,000	$	20.39