Quarterly report pursuant to Section 13 or 15(d)

Restricted Investments - Summary of Debt Securities (Details)

v3.23.2
Restricted Investments - Summary of Debt Securities (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Sep. 30, 2022
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost $ 13,934 $ 7,432
Gross Unrealized Gains 0 0
Gross Unrealized Losses 581 566
Fair Value 13,353 6,866
U.S. government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 6,007 2,622
Gross Unrealized Gains 0 0
Gross Unrealized Losses 175 141
Fair Value 5,832 2,481
Corporate debt securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 4,774 2,797
Gross Unrealized Gains 0 0
Gross Unrealized Losses 242 260
Fair Value 4,532 2,537
Municipal government securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,928 1,151
Gross Unrealized Gains 0 0
Gross Unrealized Losses 86 96
Fair Value 1,842 1,055
Agency backed securities    
Debt Securities, Available-for-Sale [Line Items]    
Amortized Cost 1,225 862
Gross Unrealized Gains 0 0
Gross Unrealized Losses 78 69
Fair Value $ 1,147 $ 793