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Note 9 - Notes Payable - Schedule of Notes Payable at Face Value and Notes Payable to Related Parties (Details) (Parentheticals) - USD ($) $ in Millions | 9 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023 | May 31, 2022 | Jun. 30, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Phoenix [Member] |  |  |  |  |  |  |  |
Interest rate |  | 8.00% | [1],[2] | 8.00% |  |  |  |
Debt maturity |  | Aug. 26, 2024 | [1],[2] | Aug. 26, 2024 |  |  |  |
Revolving Credit Facility Expiring December 1, 2026 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 65.0 | [1],[2] | $ 65.0 |  |  |  |
Revolving credit facility, expiration date |  | Dec. 01, 2026 | [1],[2] | Dec. 01, 2026 |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |  |  |  |
Amount of securing assets |  | $ 2,536.3 | [1],[2] | $ 2,252.9 |  |  |  |
Interest rate |  | 7.00% | [1],[2] | 6.30% |  |  |  |
Revolving Credit Facility Expiring October 30, 2025 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 50.0 | [1],[2] | $ 50.0 |  |  |  |
Revolving credit facility, expiration date |  | Oct. 30, 2025 | [1],[2] | Oct. 30, 2025 |  |  |  |
Revolving Credit Facility Expiring December 15, 2025 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 100.0 | [1],[2] | $ 100.0 |  |  | $ 100.0 |
Revolving credit facility, expiration date |  | Dec. 15, 2025 | [1],[2] | Dec. 15, 2025 |  |  |  |
Revolving Credit Facility Expiring July 20, 2025 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 50.0 | [1],[2] | $ 50.0 |  |  |  | $ 50.0
Revolving credit facility, expiration date |  | Jul. 20, 2025 | [1],[2] | Jul. 20, 2025 |  |  |  |
Revolving Credit Facility Expiring December 11, 2024 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 20.0 | [1],[2] | $ 20.0 |  | $ 20.0 |  |
Revolving credit facility, expiration date |  | Dec. 11, 2024 | [1],[2] | Dec. 11, 2024 |  |  |  |
Revolving Credit Facility, Paid Off May, 2024 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  | $ 250.0 |  |  |  |
Revolving credit facility, pay off date |  |  |  | May 31, 2024 |  |  |  |
Revolving Credit Facility Expiring July 15, 2027 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 50.0 | [1],[2] | $ 50.0 |  |  |  |
Revolving credit facility, expiration date |  | Jul. 15, 2027 | [1],[2] | Jul. 15, 2027 |  |  |  |
Revolving Credit Facility Expiring December 15, 2026 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 300.0 | [1],[2] | $ 300.0 |  |  |  |
Revolving credit facility, expiration date |  | Dec. 15, 2026 | [1],[2] | Dec. 15, 2026 |  |  |  |
Revolving Credit Facility Expiring May 15, 2026 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 300.0 | [1],[2] | $ 300.0 |  |  |  |
Revolving credit facility, expiration date |  | May 15, 2026 | [1],[2] | May 15, 2026 |  |  |  |
Revolving Credit Facility, Sold May 2022, Expiring November 15, 2028 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 325.0 | [1],[2] | $ 325.0 | $ 325.0 |  |  |
Revolving credit facility, expiration date |  | Nov. 15, 2028 | [1],[2] | Nov. 15, 2028 |  |  |  |
Revolving Credit Facility Expiring August 5, 2026 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 158.3 | [1],[2] | $ 158.3 |  |  |  |
Revolving credit facility, expiration date |  | Aug. 05, 2026 | [1],[2] | Aug. 05, 2026 |  |  |  |
Revolving Credit Facility Expiring March 15, 2027 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 100.0 | [1],[2] | $ 100.0 |  |  |  |
Revolving credit facility, expiration date |  | Mar. 15, 2027 | [1],[2] | Mar. 15, 2027 |  |  |  |
Revolving Credit Facility Expiring August 30, 2027 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity | [1],[2] | $ 25.0 |  |  |  |  |  |
Revolving credit facility, expiration date | [1],[2] | Aug. 30, 2027 |  |  |  |  |  |
Revolving Credit Facility Expiring February 15, 2028 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 300.0 | [1],[2] | $ 300.0 |  |  |  |
Revolving credit facility, expiration date |  | Feb. 15, 2028 | [1],[2] | Feb. 15, 2028 |  |  |  |
Revolving Credit Facility Expiring May 17, 2027 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 150.0 | [1],[2] | $ 150.0 |  |  |  |
Revolving credit facility, expiration date |  | May 17, 2027 | [1],[2] | May 17, 2027 |  |  |  |
Revolving Credit Facility, Sold May 2024, Expiring November 15, 2028 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 250.0 | [1],[2] | $ 250.0 |  |  |  |
Revolving credit facility, expiration date |  | Nov. 15, 2028 | [1],[2] | Nov. 15, 2028 |  |  |  |
Revolving Credit Facility Expiring March 29, 2025 1 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 150.0 | [1],[2] | $ 150.0 |  |  |  |
Revolving credit facility, expiration date |  | Mar. 29, 2025 | [1],[2] | Mar. 29, 2025 |  |  |  |
Revolving Credit Facility Expiring March 29, 2025 2 [Member] |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  | $ 32.8 |  |  |  |  |  |
Revolving credit facility, expiration date |  | Mar. 29, 2025 |  |  |  |  |  |
[1] | As of June 30, 2024, the Prime Rate was 8.50% and the Secured Overnight Financing Rate ("SOFR") was 5.33%.
[2] | As of September 30, 2024, the Prime Rate was 8.00%, the Term Secured Overnight Financing Rate ("Term SOFR") was 4.85% and the Secured Overnight Financing Rate ("SOFR") was 4.96%.

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