Stock-Based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement, Noncash Expense [Abstract]

Schedule of components of stock compensation expense

The components of stock compensation expense were as follows:

	Year Ended December 31,
	2021		2020
	(in thousands)
2007 Stock Incentive Plan	$	1,659	$	3,142
2021 Stock Incentive Plan	14,678		7,960
Employee Stock Purchase Plan	241		276
Total Stock Compensation Expense	$	16,578	$	11,378

Summary of restricted stock activity

The following table summarizes restricted stock activity under the 2007 and 2021 Plans for the years ended December 31, 2021 and 2020:

	Number Outstanding	Weighted Average Grant Date Fair Value
Balance as of December 31, 2019	505,467	$	37.70
Shares granted	319,350	19.00
Shares forfeited	—	—
Shares vested	(243,102)	28.35
Balance as of December 31, 2020	581,715	31.34
Shares granted	327,550	42.40
Shares forfeited	—	—
Shares vested	(348,657)	28.66
Balance as of December 31, 2021	560,608	$	36.30