v3.25.4
Restricted Investments - Debt Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Sep. 30, 2025
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 20,917 $ 23,030
Gross Unrealized Gains 262 265
Gross Unrealized Losses 71 119
Fair Value 21,108 23,176
U.S. government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 12,143 13,938
Gross Unrealized Gains 98 96
Gross Unrealized Losses 40 63
Fair Value 12,201 13,971
Corporate debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 5,267 5,552
Gross Unrealized Gains 132 138
Gross Unrealized Losses 11 19
Fair Value 5,388 5,671
Municipal government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,037 1,170
Gross Unrealized Gains 4 8
Gross Unrealized Losses 16 21
Fair Value 1,025 1,157
Other debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 2,470 2,370
Gross Unrealized Gains 28 23
Gross Unrealized Losses 4 16
Fair Value $ 2,494 $ 2,377