XML 113 R99.htm IDEA: XBRL DOCUMENT v3.23.2
Benefit Plans - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2021
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 281 $ 547 $ 106
Interest cost 369 279 262
(Accretion) amortization of unrecognized (gain) loss (24) 80 83
Expected return on assets (99) (110) (113)
Net periodic benefit cost 527 796 338
Atlas Bank Retirement Income Plan ("ABRIP")      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Interest cost 78 62 61
(Accretion) amortization of unrecognized (gain) loss 28 21 22
Expected return on assets (99) (110) (113)
Net periodic benefit cost $ 7 $ (27) $ (30)
Discount rate 4.50% 3.00% 2.75%
Long term rate of return on plan assets 3.50% 3.50% 3.50%
Benefit Equalization Plan ("BEP")      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Interest cost $ 111 $ 86 $ 85
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Other expense
(Accretion) amortization of unrecognized (gain) loss 46 71 $ 75
Net periodic benefit cost $ 157 $ 157 $ 160
Discount rate 4.50% 3.00% 2.75%
Postretirement Welfare Plan      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 95 $ 116 $ 106
Interest cost 48 33 27
(Accretion) amortization of unrecognized (gain) loss (28) (12) (14)
Net periodic benefit cost $ 115 $ 137 $ 119
Discount rate 4.50% 3.00% 2.75%
Salary increase rate 3.25% 3.25% 3.25%
Directors' Consultation and Retirement Plan ("DCRP")      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Interest cost $ 117 $ 92 $ 89
(Accretion) amortization of unrecognized (gain) loss (69) 0 0
Net periodic benefit cost $ 48 $ 92 $ 89
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other expense    
Discount rate 4.50% 3.00% 2.75%
Supplemental Executive Retirement Plan (SERP)      
Defined Benefit Plans And Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost $ 185 $ 431  
Interest cost 11 6  
Net periodic benefit cost $ 196 $ 437  
Discount rate 3.00% 3.00%  
Salary increase rate 4.00% 4.00%