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Share-Based Compensation - Stock Option Activity (Details)
3 Months Ended
Mar. 31, 2022
USD ($)
$ / shares
shares
Number of Shares  
Beginning balance (in shares) | shares 28,500
Exercised (in shares) | shares (3,000)
Ending balance (in shares) | shares 25,500
Vested and expected to vest (in shares) | shares 25,500
Exercisable (in shares) | shares 25,500
Weighted-Average Exercise Price  
Beginning balance (in dollars per share) | $ / shares $ 17.14
Exercised (in dollars per share) | $ / shares 12.46
Ending balance (in dollars per share) | $ / shares 17.69
Vested and expected to vest, weighted-average exercise price (in dollars per share) | $ / shares 17.69
Exercisable, weighted-average exercise price (in dollars per share) | $ / shares $ 17.69
Weighted Average Remaining Contractual Term (in Years)  
Outstanding 1 year 4 months 13 days
Vested and expected to vest 1 year 4 months 13 days
Exercisable 1 year 4 months 13 days
Aggregate Intrinsic Value  
Outstanding | $ $ 609,645
Vested and expected to vest | $ 609,645
Exercisable | $ $ 609,645