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Note 9 - Notes Payable (Details Textual) - USD ($) |  |  |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Oct. 31, 2015 | Sep. 30, 2023 | May 31, 2023 | Sep. 30, 2022 | Aug. 31, 2022 | May 31, 2022 | Nov. 30, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Oct. 31, 2020 | Jul. 31, 2020 | Nov. 30, 2019 | Oct. 31, 2016 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022 | Jan. 31, 2021 | Aug. 31, 2019 | Jun. 30, 2019
Long-Term Line of Credit |  |  |  |  | $ 1,765,020,000 |  |  |  |  |  |  |  |  |  |  |  | $ 1,765,020,000 |  | $ 1,765,020,000 |  | $ 1,630,111,000 |  |  |
Proceeds from Issuance of Long-term Debt, Total |  |  |  |  |  |  | $ 100,000,000 |  |  | $ 300,000,000 |  | $ 300,000,000 | $ 250,000,000 | $ 100,000,000 | $ 200,000,000 |  |  |  |  |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure (Year) |  |  |  |  |  |  | 3 years |  |  | 3 years | 24 months | 4 years | 41 months | 3 years | 3 years |  |  |  |  |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure, Subsequent Amortization Period (Month) |  |  |  |  |  |  | 18 months |  |  | 18 months |  |  | 18 months | 18 months |  |  |  |  |  |  |  |  |  |
Asset Backed Securities, Weighted Average Interest Rate |  |  |  |  |  |  | 7.30% |  |  | 3.53% |  | 4.24% | 4.10% | 5.47% | 4.91% |  |  | 7.30% |  | 7.30% |  |  |  |
Term Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 35,000,000 |  |
Long-Term Line of Credit |  |  |  |  | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  | 35,000,000 |  | 35,000,000 |  |  |  |  |
Second Term Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  | $ 75,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |
Term Note [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term Debt, Total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,400,000 |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 8.00% |
Senior Notes [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  | 6.125% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  |  |  |  |  |  | $ 150,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Debt Issuance Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 400,000 | $ 400,000 | 1,100,000 |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 322,000 |  | 1,108,000 | $ 1,100,000 |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure, Subsequent Amortization Period (Month) |  |  |  |  |  |  |  |  |  |  |  | 11 months |  |  | 12 months |  |  |  |  |  |  |  |  |
Minimum [Member] | Term Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.00% |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure, Subsequent Amortization Period (Month) |  |  |  |  |  |  |  |  |  |  |  | 18 months |  |  | 18 months |  |  |  |  |  |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 47,900,000 |  |  |  |  |  |  |  |  |  |  |  | 47,900,000 |  | 47,900,000 |  |  |  |  |
Secured by the Financial and Operating Assets of CAR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  | 65,000,000 |  |  |  |  |  |  |  |  |  |  |  | 65,000,000 |  | 65,000,000 |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 45,300,000 |  |  |  |  |  |  |  |  |  |  |  | 45,300,000 |  | 45,300,000 |  |  |  |  |
December 2017 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  | $ 50,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 28,900,000 |  |  |  |  |  |  |  |  |  |  |  | 28,900,000 |  | 28,900,000 |  |  |  |  |
Additional Trust Funding Notes Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  | $ 100,000,000 |  |  | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  | 100,000,000 |  | 100,000,000 |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |
June 2019 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,000,000
Long-Term Line of Credit |  |  |  |  | 18,500,000 |  |  |  |  |  |  |  |  |  |  |  | 18,500,000 |  | 18,500,000 |  |  |  |  |
May 2022 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  |  | $ 250,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 250,000,000 |  |  |  |  |  |  |  |  |  |  |  | 250,000,000 |  | 250,000,000 |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure (Year) |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Backed Securities, Term of Revolving Structure, Subsequent Amortization Period (Month) |  |  |  |  |  |  |  |  | 18 months |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Asset Backed Securities, Weighted Average Interest Rate |  |  |  |  |  |  |  |  | 6.33% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
August 2022 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  |  |  | $ 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 0 |  |  |  |  |
May 2023 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity |  |  |  |  |  | $ 20,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-Term Line of Credit |  |  |  |  | 20,000,000 |  |  |  |  |  |  |  |  |  |  |  | 20,000,000 |  | 20,000,000 |  |  |  |  |
ABS Secured by Certain Credit Card Receivables [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of Credit Facility, Maximum Borrowing Capacity | [1],[2],[3],[4] |  |  |  | 300,000,000 |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 |  | 300,000,000 |  |  |  |  |
Long-Term Line of Credit | [1],[2],[3],[4] |  |  |  | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |  | $ 300,000,000 |  | $ 0 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 9.51% |  |  |  |  |  |  |  |  |  |  |  | 9.51% |  | 9.51% |  |  |  |  |
Debt Instrument, Term (Year) |  |  |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prime Rate [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Rate |  |  |  |  | 8.50% |  |  |  |  |  |  |  |  |  |  |  | 8.50% |  | 8.50% |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Variable Rate |  |  |  |  | 5.31% |  |  |  |  |  |  |  |  |  |  |  | 5.31% |  | 5.31% |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] | Secured by the Financial and Operating Assets of CAR [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.25% |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] | Secured by the Financial and Operating Assets of CAR [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.60% |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] | December 2017 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 3.60% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] | Additional Trust Funding Notes Facilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  | 3.10% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) [Member] | May 2023 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  | 3.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  | 3.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member] | August 2022 Revolving Credit Facility [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  |  |  |  |  |  | 1.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | Creditors do not have recourse against the general assets of the Company but only to the collateral within the VIEs.
[2] | Loans are associated with VIEs. See Note 7, "Variable Interest Entities" for more information.
[3] | Loans are subject to certain affirmative covenants tied to default rates and other performance metrics the failure of which could result in required early repayment of the remaining unamortized balances of the notes.
[4] | See below for additional information.

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
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