Quarterly report [Sections 13 or 15(d)]

Restricted Investments - Debt Securities (Details)

v3.25.2
Restricted Investments - Debt Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Sep. 30, 2024
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 21,919 $ 17,986
Gross Unrealized Gains 194 256
Gross Unrealized Losses 159 222
Fair Value 21,954 18,020
U.S. government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 14,192 8,332
Gross Unrealized Gains 75 76
Gross Unrealized Losses 85 70
Fair Value 14,182 8,338
Corporate debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 5,282 6,781
Gross Unrealized Gains 98 162
Gross Unrealized Losses 25 71
Fair Value 5,355 6,872
Municipal government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,322 1,618
Gross Unrealized Gains 9 16
Gross Unrealized Losses 28 36
Fair Value 1,303 1,598
Agency backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,123  
Gross Unrealized Gains 12  
Gross Unrealized Losses 21  
Fair Value $ 1,114  
Other debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost   1,255
Gross Unrealized Gains   2
Gross Unrealized Losses   45
Fair Value   $ 1,212