v3.26.1
FAIR VALUE MEASUREMENTS - Financial assets and liabilities on recurring basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
FAIR VALUE MEASUREMENTS    
Fair Value $ 35,194 $ 40,931
U.S. Government Treasuries    
FAIR VALUE MEASUREMENTS    
Fair Value   2,416
U.S. Government Agencies    
FAIR VALUE MEASUREMENTS    
Fair Value 4,290 6,734
Mortgaged-Backed Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 11,471 11,119
Municipal Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 18,429 19,113
SBA Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 1,004 1,549
Recurring    
FAIR VALUE MEASUREMENTS    
Fair Value 35,194 40,931
Recurring | U.S. Government Treasuries    
FAIR VALUE MEASUREMENTS    
Fair Value   2,416
Recurring | U.S. Government Agencies    
FAIR VALUE MEASUREMENTS    
Fair Value 4,290 6,734
Recurring | Mortgaged-Backed Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 11,471 11,119
Recurring | Municipal Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 18,429 19,113
Recurring | SBA Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 1,004 1,549
Recurring | Significant Other Observable Inputs (Level 2)    
FAIR VALUE MEASUREMENTS    
Fair Value 35,194 40,931
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government Treasuries    
FAIR VALUE MEASUREMENTS    
Fair Value   2,416
Recurring | Significant Other Observable Inputs (Level 2) | U.S. Government Agencies    
FAIR VALUE MEASUREMENTS    
Fair Value 4,290 6,734
Recurring | Significant Other Observable Inputs (Level 2) | Mortgaged-Backed Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 11,471 11,119
Recurring | Significant Other Observable Inputs (Level 2) | Municipal Securities    
FAIR VALUE MEASUREMENTS    
Fair Value 18,429 19,113
Recurring | Significant Other Observable Inputs (Level 2) | SBA Securities    
FAIR VALUE MEASUREMENTS    
Fair Value $ 1,004 $ 1,549