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Stock-Based Compensation - Summary of Activity in the Equity Plan (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
$ / shares
shares
Shares  
Outstanding beginning balance (in shares) | shares 332,708
Granted (in shares) | shares 127,275
Exercised (in shares) | shares 0
Forfeited (in shares) | shares (3,600)
Expired (in shares) | shares (5,625)
Outstanding ending balance (in shares) | shares 450,758
Vested at ending balance (in shares) | shares 180,318
Exercisable at ending balance (in shares) | shares 180,318
Weighted Average Exercise Price  
Outstanding beginning balance (in dollars per share) | $ / shares $ 16.01
Granted (in dollars per share) | $ / shares 14.67
Exercised (in dollars per share) | $ / shares 0
Forfeited (in dollars per share) | $ / shares 15.13
Expired (in dollars per share) | $ / shares 16.45
Outstanding ending balance (in dollars per share) | $ / shares 15.64
Exercisable at ending balance (in dollars per share) | $ / shares 16.52
Vested at ending balance (in dollars per share) | $ / shares $ 16.52
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value  
Weighted Average Remaining Contractual Term, Outstanding 7 years 8 months 15 days
Weighted Average Remaining Contractual Term, Vested 6 years 11 months 15 days
Weighted Average Remaining Contractual Term, Exercisable 6 years 11 months 15 days
Aggregate Intrinsic Value, Outstanding | $ $ 3,216
Aggregate Intrinsic Value, Vested | $ 1,191
Aggregate Intrinsic Value, Exercisable | $ $ 1,191