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Equity-based compensation Plan (Equity-Based Compensation Plan) (Details) - $ / shares
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number Of Options      
Number of options - Beginning of period (in shares) 481,444 634,294 739,326
Number of options - Options granted (in shares) 0 0 0
Number of options - Options exercised (in shares) (140,850) (119,500) (105,032)
Number of options - Options forfeited (in shares) (2,100) (33,350) 0
Number of options - End of period (in shares) 338,494 481,444 634,294
Weighted Average Exercise Price      
Weighted Average Exercise Price - Beginning of period (in dollars per share) $ 15.10 $ 14.60 $ 14.28
Weighted Average Exercise Price - Options granted (in dollars per share) 0 0 0
Weighted Average Exercise Price - Options exercised (in dollars per share) 13.51 12.36 12.32
Weighted Average Exercise Price - Options forfeited (in dollars per share) 16.55 15.42 0
Weighted Average Exercise Price - End of period (in dollars per share) $ 15.76 $ 15.10 $ 14.60