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v3.25.2

Long-term Debt and Line of Credit - Summary of Long-term Debt and Line of Credit (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Sep. 30, 2024
Debt Instrument [Line Items] |  |
Total debt outstanding | $ 424,508,000 | $ 430,306,000
Less current portion (net of debt issuance costs) | (37,970,000) | (7,874,000)
Less unamortized portion of debt issuance costs | (5,041,000) | (7,498,000)
Long-term debt, net of current portion and unamortized debt issuance costs | 381,497,000 | 414,934,000
Term note payable to Truist Bank, secured and bearing interest at 7.55% at June 30, 2025 and 7.85% at September 30, 2024. The note requires quarterly principal payments commencing on December 31, 2022 and maturing with a full repayment on July 31, 2026 |  |
Debt Instrument [Line Items] |  |
Total debt outstanding | $ 375,469,000 | $ 375,469,000
Debt instrument, interest rate, stated percentage | 7.55% | 7.85%
Revolving note payable for an amount up to $65.0 million to Truist Bank, secured and bearing interest at 7.53% at June 30, 2025 and 7.75% at September 30, 2024. The note requires full repayment on July 31, 2026 |  |
Debt Instrument [Line Items] |  |
Total debt outstanding | $ 47,229,000 | $ 51,150,000
Debt instrument, interest rate, stated percentage | 7.53% | 7.75%
Line of credit facility, maximum borrowing capacity | $ 65,000,000.0 |
Notes payable to commercial vehicle lenders secured by the value of the vehicles bearing interest at rates ranging from 0.0% to 10.8% per annum. The notes require monthly installment payments of principal and interest ranging from $200 to $3,100 through May 2032 |  |
Debt Instrument [Line Items] |  |
Total debt outstanding | $ 1,810,000 | $ 2,561,000
Notes payable to commercial vehicle lenders secured by the value of the vehicles bearing interest at rates ranging from 0.0% to 10.8% per annum. The notes require monthly installment payments of principal and interest ranging from $200 to $3,100 through May 2032 | Minimum |  |
Debt Instrument [Line Items] |  |
Debt instrument, interest rate, stated percentage | 0.00% |
Debt instrument, periodic payment | $ 200,000 |
Notes payable to commercial vehicle lenders secured by the value of the vehicles bearing interest at rates ranging from 0.0% to 10.8% per annum. The notes require monthly installment payments of principal and interest ranging from $200 to $3,100 through May 2032 | Maximum |  |
Debt Instrument [Line Items] |  |
Debt instrument, interest rate, stated percentage | 10.80% |
Debt instrument, periodic payment | $ 3,100,000 |
Note payable to Norfolk Marine Company, unsecured and bearing interest at 4.0% per annum. The note was paid in full on December 1, 2024 |  |
Debt Instrument [Line Items] |  |
Total debt outstanding | $ 0 | $ 1,126,000
Debt instrument, interest rate, stated percentage | 4.00% |

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