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Stock-based Compensation - Summary of ESOP Shares (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]    
Allocated shares 145,389 127,102
Shares committed for release 19,245 19,245
Unearned shares 192,450 211,695
Total ESOP shares 357,084 358,042
Fair value of unearned ESOP shares [1] $ 4,388 $ 3,652
[1] Based on closing price of $22.80 and $17.25 per share on June 30, 2021, and 2020, respectively.