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Stock-based Compensation (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Restricted stock and restricted stock unit awards activity
The following table summarizes activity involving restricted stock and restricted stock unit awards for the year ended December 31, 2021:
Number of
Shares		Weighted-
Average
Grant Date
Fair Value
 (in thousands) 
Non-vested at December 31, 2020
21,508 $12.37 
Granted13,908 13.95 
Vested(11,161)13.56 
Forfeited(1,828)12.58 
Non-vested at December 31, 2021
22,427 12.74