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Stock-Based Compensation - Summary of RSU Activity (Details) - Restricted Stock - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Summary of the Company's restricted stock activity      
Outstanding at beginning of year (in shares) 625,383 744,516 871,206
Granted (in shares) 196,526 287,919 393,825
Vested (in shares) (276,948) (386,685) (506,190)
Forfeited (in shares) (34,281) (20,367) (14,325)
Outstanding at end of year (in shares) 510,680 625,383 744,516