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v3.25.1

Short-Term Borrowings and Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Sep. 30, 2024
Mortgage Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 2.20% |
Mortgage Facility [Member] | Mortgage Facility Payable to Flagship Bank [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 6.50% | 6.50%
Debt instrument basis percentage | 1.00% | 1.00%
Additional extension for two one-year periods | Aug. 31, 2027 | Aug. 31, 2027
Mortgage Facility [Member] | Mortgage Facility Payable to Flagship Bank [Member] | Interest Rate Prime [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument description of variable rate basis | (prime minus 100 basis points with a floor of 2.00 | (prime minus 100 basis points with a floor of 2.00
Mortgage Facility [Member] | Mortgage Facility Payable to Flagship Bank [Member] | Interest Rate Floor [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 2.00% | 2.00%
Mortgage Facility [Member] | Mortgage Facility Payable to Seacoast National Bank [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 6.57% | 6.57%
Additional extension for two one-year periods | Sep. 30, 2031 | Sep. 30, 2031
Mortgage Facility [Member] | Mortgage Facility Payable to Seacoast National Bank [Member] | SOFR [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument basis percentage | 2.20% | 2.20%
Debt instrument description of variable rate basis | (SOFR plus 220 basis points | (SOFR plus 220 basis points
Mortgage Facility [Member] | Mortgage facility payable to Hancock Whitney Bank [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 6.88% | 6.88%
Debt instrument basis percentage | 0.625% | 0.625%
Additional extension for two one-year periods | Nov. 30, 2027 | Nov. 30, 2027
Percentage of outstanding borrowings hedged | 50.00% | 50.00%
Fixed interest rate | 3.20% | 3.20%
Mortgage Facility [Member] | Mortgage facility payable to Hancock Whitney Bank [Member] | Interest Rate Prime [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument description of variable rate basis | (prime minus 62.5 basis points with a floor of 2.25 | (prime minus 62.5 basis points with a floor of 2.25
Mortgage Facility [Member] | Mortgage facility payable to Hancock Whitney Bank [Member] | Interest Rate Floor [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 2.25% | 2.25%
Term Loan [Member] | Term loan payable to M&T Bank [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 5.82% | 5.82%
Additional extension for two one-year periods | Aug. 31, 2027 | Aug. 31, 2027
Term Loan [Member] | Loan payable to TRANSPORT S.a.s di Taula Vittorio and C. [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument interest rate | 6.21% | 6.21%
Additional extension for two one-year periods | Dec. 31, 2030 | Dec. 31, 2030

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