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Note F - Debt (Details Textual) - USD ($) |  |  |  | 12 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 22, 2022 | Sep. 29, 2021 | Oct. 29, 2020 | Apr. 30, 2022 | Apr. 30, 2021 | Apr. 30, 2020 | Apr. 27, 2022 | Sep. 28, 2021 | Feb. 10, 2021 | Dec. 31, 2020 | Sep. 30, 2019 | Sep. 29, 2019
Amortization of Debt Issuance Costs and Discounts, Total |  |  |  | $ 775,000 | $ 391,000 | $ 273,000 |  |  |  |  |  |
Payments of Financing Costs, Total |  |  |  | 2,100,000 | 282,000 |  |  |  |  |  |  |
Debt Issuance Costs, Gross |  |  |  | $ 2,000,000.0 | $ 678,000 |  |  |  |  |  |  |
Notes Payable [Member] |  |  |  |  |  |  |  |  |  |  |  |
Weighted Average Fixed Coupon Rate, Percent |  |  |  |  |  |  | 5.14% |  |  |  |  |
Minimum Percent of Pool Balance |  |  |  |  |  |  | 2.00% |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  |  | 18 months |  |  |  |  |  |  |  |
Minimum [Member] | Medium-term Vehicle Contracts [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  | 36 months |  |  |  |  |  |  |  |  |
Minimum [Member] | Long-term Vehicle Contracts [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  | 42 months |  |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  |  | 54 months |  |  |  |  |  |  |  |
Maximum [Member] | Medium-term Vehicle Contracts [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  | 42 months |  |  |  |  |  |  |  |  |
Maximum [Member] | Long-term Vehicle Contracts [Member] |  |  |  |  |  |  |  |  |  |  |  |
Financing Receivable Payment Period (Month) |  |  | 60 months |  |  |  |  |  |  |  |  |
BMO Harris Bank [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  | $ 326,000,000 |  |
Debt Instrument, Covenant, Maximum Borrowing Base, Percentage of Financing Receivables |  |  | 15.00% |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Aggregate Consideration for Businesses Acquired in One Year |  |  | $ 20,000,000.0 |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Disposal of Real Estate |  |  | 5,000,000.0 |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Disposal Other Properties |  |  | $ 1,000,000.0 |  |  |  |  |  |  |  |  |
Line of Credit Facility, Total Increase in Borrowing Capacity |  |  |  |  |  |  |  |  |  | $ 85,000,000 |  |
Maximum Allowable Capital Expenditures By Credit Facilities Amendment |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |
BMO Harris Bank [Member] | Medium-term Vehicle Contracts [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Borrowing Base, Percentage of Financing Receivables |  |  | 15.00% |  |  |  |  |  |  |  |  |
BMO Harris Bank [Member] | Long-term Vehicle Contracts [Member] | Line of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Maximum Borrowing Base, Percentage of Financing Receivables |  |  | 5.00% |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Additional Borrowing Capacity, Accordion Feature |  |  |  | $ 197,800,000 |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | BMO Harris Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 600,000,000 |  |  |  |  |  | $ 326,000,000 |  |  | $ 241,000,000 | $ 215,000,000
Line of Credit Facility, Additional Borrowing Capacity, Accordion Feature |  | 100,000,000 |  |  |  |  |  |  |  |  | 100,000,000 | 50,000,000
Maximum Allowable Capital Expenditures By Credit Facilities Amendment |  | 35,000,000 |  |  |  |  |  | $ 25,000,000 | $ 25,000,000 |  |  |
Line of Credit Facility, Increase In Maximum Borrowing Capacity |  | $ 274,000,000 |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.25% |  |  |  |  |  |  |  |  |  |  |
Line of Credit, Unused Line Fee, Percent, Contingent Upon Amendment Terms | 0.375% |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Effective Percentage |  |  |  | 2.25% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | BMO Harris Bank [Member] | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 2.35% |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] | BMO Harris Bank [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 2.85% | 2.85% |  |  |  |  |  |  |
Colonial Revolving Credit Facility [Member] | BMO Harris Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | 231,000,000 | $ 205,000,000
ACM TCM Revolving Credit Facility [Member] | BMO Harris Bank [Member] |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | $ 10,000,000 |

X
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