v3.26.1
Benefit Plans - Schedule of Fair Value Measurements of ABRIP's Assets (Details) - Atlas Bank Retirement Income Plan ("ABRIP") - USD ($)
$ in Thousands
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]      
Empower Guaranteed Deposit Fund $ 2,639 $ 2,648 $ 2,649
Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Empower Guaranteed Deposit Fund 0 0  
Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Empower Guaranteed Deposit Fund 2,639 2,648  
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Empower Guaranteed Deposit Fund $ 0 $ 0