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Equity Incentive Plan - Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Options      
Options outstanding at beginning of period (in shares) 244,750    
Options outstanding at end of period (in shares) 172,150 244,750  
Options, Nonvested (in shares)   244,750  
Weighted- Average Exercise Price      
Option, nonvested, weighted average exercise price (in dollars per share)   $ 25.37  
Weighted average remaining contractual term   3 years 1 month 6 days  
Average remaining contractual life   7 years 6 months  
Exercisable, intrinsic value   $ 11,036  
Options, nonvested, intrinsic value   $ 621  
Stock Options      
Options      
Options outstanding at beginning of period (in shares) 1,319,456 1,615,500  
Granted (in shares) 47,850 49,750  
Exercised (in shares) (413,636) (318,894)  
Forfeited (in shares) (24,800) (26,900)  
Options outstanding at end of period (in shares) 928,870 1,319,456 1,615,500
Options Exercisable (in shares) 756,720 1,074,706  
Options, Nonvested (in shares) 172,150    
Weighted- Average Exercise Price      
Options outstanding weighted average exercise price at beginning of year (in dollars per share) $ 19.07 $ 18.12  
Granted, Weighted average exercise price (in dollars per share) 30.90 23.44  
Exercised, Weighted average exercise price (in dollars per share) 14.70 14.40  
Forfeited, Weighted average exercise price (in dollars per share) 23.96 25.77  
Options outstanding weighted average exercise price at end of year (in dollars per share) 21.49 19.07 $ 18.12
Exercisable, weighted average exercise price (in dollars per share) 20.24 $ 17.63  
Option, nonvested, weighted average exercise price (in dollars per share) $ 26.96    
Options outstanding, remaining contractual life 4 years 1 month 6 days 3 years 10 months 24 days 4 years 4 months 24 days
Weighted average remaining contractual term 3 years 3 months 18 days    
Average remaining contractual life 7 years 6 months    
Options outstanding, aggregate intrinsic value $ 4,036 $ 11,657 $ 1,711
Exercisable, intrinsic value 3,971    
Options, nonvested, intrinsic value $ 65