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Stock-based Compensation - Summary of Non-vested Restricted Stock Activity (Detail) - Restricted Stock [Member]
12 Months Ended
Jun. 30, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Beginning balance, Shares | shares 40,250
Granted, Shares | shares
Forfeited, Shares | shares
Earned and issued, Shares | shares 10,062
Ending balance, Shares | shares 30,188
Beginning balance, Weighted-Average Grant-Date Fair Value | $ / shares $ 16.79
Granted, Weighted-Average Grant-Date Fair Value | $ / shares
Forfeited, Weighted-Average Grant-Date Fair Value | $ / shares
Earned and issued, Weighted-Average Grant-Date Fair Value | $ / shares 16.79
Ending balance, Weighted-Average Grant-Date Fair Value | $ / shares $ 16.79