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Note F - Debt Facilities (Details Textual) - USD ($) |  | 3 Months Ended | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 29, 2020 | Jul. 31, 2021 | Jul. 31, 2020 | Apr. 30, 2021 | Feb. 10, 2021 | Jan. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2019 | Sep. 29, 2019
Amortization of Debt Issuance Costs and Discounts, Total |  | $ 120,000 | $ 80,000 |  |  |  |  |  |
Payments of Financing Costs, Total |  | 0 | $ 0 |  |  |  |  |  |
Debt Issuance Costs, Gross |  | $ 558,000 |  | $ 678,000 |  |  |  |  |
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 |  |  |  |  | $ 25,000,000 | $ 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 |  | $ 53,400,000 |  |  |  |  |  |  |
Revolving Credit Facility [Member] | BMO Harris Bank [Member] |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | $ 241,000,000 | $ 215,000,000
Line of Credit Facility, Additional Borrowing Capacity, Accordion Feature |  |  |  |  |  |  |  | 100,000,000 | 50,000,000
Debt Instrument, Interest Rate, Effective Percentage |  | 2.85% |  | 2.85% |  |  |  |  |
Revolving Credit Facility [Member] | BMO Harris Bank [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 2.35% |  | 2.35% |  |  |  |  |
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
- Definition The maximum aggregate consideration for all businesses acquired in one year allowed under the covenant of the debt instrument. + References No definition available. + Details
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X
- Definition The maximum borrowing base allowed expressed as a percentage of financing receivables balance under the covenant of the debt instrument. + References No definition available. + Details
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- Definition The maximum amount of real estate that is allowed to be disposed of under the covenant of the debt instrument. + References No definition available. + Details
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- Definition The maximum amount of other properties that can be disposed of under the covenant of the debt instrument. + References No definition available. + Details
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- Definition Represents the payment period on installment sale contracts from the sale of used vehicles. + References No definition available. + Details
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- Definition Additional borrowing capacity of line of credit facility with an accordion feature. + References No definition available. + Details
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- Definition Amount of increase under the credit facility. + References No definition available. + Details
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- Definition Amount of capital expenditures allowable under Credit Facilities in the aggregate during any fiscal year. + References No definition available. + Details
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- Definition Amount of amortization expense attributable to debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69E -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495743-112612 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1F -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495355-112611 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69F -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495745-112612 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466204&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28555-108399 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The cash outflow for loan and debt issuance costs. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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