v3.26.1
Benefit Plans - Schedule of Net Funded Status (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Change in benefit obligation:      
Service cost $ 605 $ 71 $ 77
Interest cost 410 360 369
Atlas Bank Retirement Income Plan ("ABRIP")      
Change in benefit obligation:      
Projected benefit obligation - beginning 1,521 1,570  
Interest cost 83 82 81
Actuarial (gain) loss (86) 17  
Premiums/claims paid (143) (148)  
Projected benefit obligation - ending 1,375 1,521 1,570
Change in plan assets:      
Fair value of assets - beginning 2,648 2,649  
Actual return on assets 134 147  
Premiums/claims paid (143) (148)  
Fair value of assets - ending 2,639 2,648 2,649
Reconciliation of funded status:      
Projected benefit obligation (1,375) (1,521) (1,570)
Fair value of assets 2,639 2,648 2,649
Funded status included in other liabilities 1,264 1,127  
Accumulated benefit obligation $ (1,375) $ (1,521)  
Valuation assumptions      
Discount rate 5.75% 5.75%  
Benefit Equalization Plan ("BEP")      
Change in benefit obligation:      
Projected benefit obligation - beginning $ 1,824 $ 2,254  
Interest cost 100 117 115
Actuarial (gain) loss 26 (351)  
Premiums/claims paid (178) (196) (246)
Projected benefit obligation - ending 1,772 1,824 2,254
Change in plan assets:      
Fair value of assets - beginning 0 0  
Contributions 178 196  
Premiums/claims paid (178) (196)  
Fair value of assets - ending 0 0 0
Reconciliation of funded status:      
Projected benefit obligation (1,772) (1,824) (2,254)
Fair value of assets 0 0 0
Funded status included in other liabilities (1,772) (1,824)  
Accumulated benefit obligation $ (1,772) $ (1,824)  
Valuation assumptions      
Discount rate 5.75% 5.75%  
Postretirement Welfare Plan      
Change in benefit obligation:      
Projected benefit obligation - beginning $ 976 $ 1,062  
Service cost 68 71 79
Interest cost 54 57 50
Actuarial (gain) loss (86) (201)  
Premiums/claims paid (14) (13) (13)
Plan amendments 0 0  
Projected benefit obligation - ending 998 976 1,062
Change in plan assets:      
Fair value of assets - beginning 0 0  
Contributions 14 13 13
Premiums/claims paid (14) (13)  
Fair value of assets - ending 0 0 0
Reconciliation of funded status:      
Projected benefit obligation (998) (976) (1,062)
Fair value of assets 0 0 0
Funded status included in other liabilities $ (998) $ (976)  
Valuation assumptions      
Discount rate 5.75% 5.75%  
Salary increase rate 3.25% 3.25%  
Directors' Consultation and Retirement Plan ("DCRP")      
Change in benefit obligation:      
Projected benefit obligation - beginning $ 2,483 $ 2,414  
Interest cost 138 130 124
Actuarial (gain) loss (61) 18  
Premiums/claims paid (128) (79)  
Projected benefit obligation - ending 2,432 2,483 2,414
Change in plan assets:      
Fair value of assets - beginning 0 0  
Contributions 128 79 49
Premiums/claims paid (128) (79)  
Fair value of assets - ending 0 0 0
Reconciliation of funded status:      
Projected benefit obligation (2,432) (2,483) (2,414)
Fair value of assets 0 0 0
Funded status included in other liabilities (2,432) (2,483)  
Accumulated benefit obligation $ (2,432) $ (2,483)  
Valuation assumptions      
Discount rate 5.75% 5.75%  
Supplemental Executive Retirement Plan (SERP)      
Change in benefit obligation:      
Projected benefit obligation - beginning $ 633 $ 633  
Service cost 537 0  
Interest cost 49 0  
Projected benefit obligation - ending 1,219 633 633
Change in plan assets:      
Fair value of assets - beginning 0    
Fair value of assets - ending 0 0  
Reconciliation of funded status:      
Projected benefit obligation (1,219) (633) $ (633)
Fair value of assets 0 0  
Funded status included in other liabilities $ (1,219) $ (633)  
Valuation assumptions      
Discount rate 5.75% 0.00%  
Salary increase rate 4.00%