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Business Combination - Additional Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 10, 2020
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Business Acquisition [Line Items]          
Bargain purchase gain   $ 0 $ 0 $ 3,053  
Finite-lived intangible assets, net   2,457 3,020 3,705 $ 3,995
Merger-related expenses   $ 0 $ 0 4,349  
MSB Financial Corporation          
Business Acquisition [Line Items]          
Cash paid for acquisition $ 9,830        
Issuance of shares of common stock to MSB stockholders in conjunction with merger (in shares) 5,853,811        
Bargain purchase gain $ 3,053        
Finite-lived intangible assets, net $ 690        
Merger-related expenses       $ 4,300  
MSB Financial Corporation | Core Deposits          
Business Acquisition [Line Items]          
Intangible asset, estimated useful life   10 years