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Captive Insurance Collateral | 6 Months Ended
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Mar. 31, 2024
Investments, Debt and Equity Securities [Abstract] |
Captive Insurance Collateral | 5) Captive Insurance Collateral The Company considers all of its captive insurance collateral to be Level 1 available-for-sale investments. Investments at March 31, 2024 consist of the following (in thousands):
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized (Loss) |  |  | Fair Value |
Cash and Receivables |  | $ | 26,848 |  |  | $ | — |  |  | $ | — |  |  | $ | 26,848 |
U.S. Government Sponsored Agencies |  |  | 32,377 |  |  |  | — |  |  |  | (708 | ) |  |  | 31,669 |
Corporate Debt Securities |  |  | 14,696 |  |  |  | — |  |  |  | (402 | ) |  |  | 14,294 |
Total |  | $ | 73,921 |  |  | $ | — |  |  | $ | (1,110 | ) |  | $ | 72,811 |
Investments at September 30, 2023 consist of the following (in thousands):
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized (Loss) |  |  | Fair Value |
Cash and Receivables |  | $ | 4,335 |  |  | $ | — |  |  | $ | — |  |  | $ | 4,335 |
U.S. Government Sponsored Agencies |  |  | 50,471 |  |  |  | — |  |  |  | (1,620 | ) |  |  | 48,851 |
Corporate Debt Securities |  |  | 18,210 |  |  |  | 12 |  |  |  | (691 | ) |  |  | 17,531 |
Total |  | $ | 73,016 |  |  | $ | 12 |  |  | $ | (2,311 | ) |  | $ | 70,717 |
Maturities of investments were as follows at March 31, 2024 (in thousands):
|  | Net Carrying Amount |
Due within one year |  | $ | 60,077 |
Due after one year through five years |  |  | 12,734 |
Due after five years through ten years |  |  | — |
Total |  | $ | 72,811 |

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