Quarterly report pursuant to Section 13 or 15(d)

Restricted Investments - Summary of Debt Securities (Details)

v3.23.1
Restricted Investments - Summary of Debt Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Sep. 30, 2022
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 11,720 $ 7,432
Gross Unrealized Gains 0 0
Gross Unrealized Losses 417 566
Fair Value 11,303 6,866
Corporate debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 3,904 2,797
Gross Unrealized Gains 0 0
Gross Unrealized Losses 188 260
Fair Value 3,716 2,537
U.S. government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 5,724 2,622
Gross Unrealized Gains 0 0
Gross Unrealized Losses 98 141
Fair Value 5,626 2,481
Municipal government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,148 1,151
Gross Unrealized Gains 0 0
Gross Unrealized Losses 76 96
Fair Value 1,072 1,055
Agency backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 944 862
Gross Unrealized Gains 0 0
Gross Unrealized Losses 55 69
Fair Value $ 889 $ 793