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Business Combination & Asset Purchase - Summary of Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed Recognized (Parenthetical) (Detail) - shares
Oct. 01, 2021
Nov. 16, 2020
Jan. 01, 2019
Perpetual Federal Savings Bank [Member]      
Business Acquisition [Line Items]      
Common stock issued in exchange of each outstanding share 1,833,845    
Limberlost Bancshares, Inc. [Member]      
Business Acquisition [Line Items]      
Common stock issued in exchange of each outstanding share     1,830,000
Adams County Financial Resources [Member]      
Business Acquisition [Line Items]      
Common stock issued in exchange of each outstanding share   40,049