Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2022

Share-Based Payment Arrangement [Abstract]

Summary of Restricted Stock Activity

A summary of restricted stock activity is presented below:

	Number of Restricted Shares	Weighted Average Grant Price
Outstanding at January 1, 2022	952,971	$5.74
Granted	627,791	$17.70
Vested	(549,363)	$5.67
Forfeitures	(65,341)	$8.85
Outstanding at December 31, 2022	966,058	$13.34

	Year Ended December 31,
	2022		2021		2020
	(In thousands, except per share data)
Fair value of vested restricted stock	$	11,080	$	3,070	$	2,852
Grant date weighted average fair value	$	17.70	$	6.05	$	5.38
Compensation expense recognized for restricted stock grants	$	4,171	$	3,406	$	3,247
Unrecognized compensation expense related to unvested shares	$	10,301
Expected recognition period	2.3 years

Summary of Significant Assumptions Used to Value PSUs

Significant assumptions used to value PSUs included:

	Year Ended December 31,
	2022		2021		2020
Risk free interest rate	3.6	%	0.3	%	0.3	%
Range of implied volatility:
Minimum	50	%	37	%	39	%
Maximum	83	%	83	%	198	%

Summary of PSU Activity

A summary of PSU activity is presented below:

	Number of PSUs	Weighted Average Grant Price
Outstanding at January 1, 2022	1,049,910	$8.11
Granted	237,407	$25.92
Earned	(596,893)	$7.85
Forfeitures	(137,870)	$10.95
Outstanding at December 31, 2022	552,554	$15.11

	Year Ended December 31,
	2022		2021		2020
	(In thousands, except per unit data)
Number of PSUs granted	237		221		232
Grant date fair value	$	6,023	$	1,891	$	1,943
Grant date fair value per unit	$	25.92	$	8.56	$	8.37
Compensation expense recognized for PSUs	$	2,439	$	3,392	$	3,217
Unrecognized compensation expense related to unvested shares	$	5,520
Expected recognition period	2.3 years