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Incentive Plans - Summary of Stock Option Activity (Details) - Equity Incentive Plans - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Shares:    
Outstanding, Beginning of Period 431,000 417,000
Granted 30,000 17,000
Exercised 0 0
Forfeited (7,500) 0
Expired (19,000) (3,000)
Outstanding, End of Period 434,500 431,000
Vested and expected to vest at year end 425,700 419,200
Exercisable at year end 390,500 372,000
Weighted-Average Exercise Price (in dollars per share):    
Outstanding, Beginning of Period $ 16.24 $ 16.22
Granted 14.52 16.70
Exercised 0 0
Forfeited 20.19 0
Expired 16.47 16.70
Outstanding, End of Period 16.04 16.24
Vested and expected to vest at year end 16.06 16.15
Exercisable at year end $ 16.13 $ 15.74
Weighted- Average Remaining Contractual Term (Years):    
Outstanding at year end 3 years 3 days 3 years 5 months 23 days
Vested and expected to vest at year end 2 years 10 months 20 days 3 years 4 months 9 days
Exercisable at year end 2 years 4 months 2 days 2 years 10 months 2 days
Aggregate Intrinsic Value ($000):    
Outstanding at year end   $ 63
Vested and expected to vest at year end   63
Exercisable at year end   $ 63