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Note 14 - Subsequent Events (Details Textual) - USD ($) $ in Millions | Aug. 03, 2026 | Jul. 31, 2026 | Jul. 17, 2026 | Jul. 15, 2026 | Jul. 08, 2026 | Jul. 01, 2026 | May 23, 2025 | May 01, 2026
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Share Repurchase Program, Authorized, Amount |  |  |  |  |  |  |  | $ 10.0
Nuveen Facility [Member] |  |  |  |  |  |  |  |
Line of Credit Facility, Change in Maximum Borrowing Capacity |  |  |  |  |  |  | $ 100.0 |
Subsequent Event [Member] |  |  |  |  |  |  |  |
Share Repurchase Program, Authorized, Amount | $ 20.0 |  |  |  |  |  |  |
Subsequent Event [Member] | Nuveen Facility [Member] |  |  |  |  |  |  |  |
Line of Credit Facility, Change in Maximum Borrowing Capacity |  |  | $ 50.0 |  |  |  |  |
Debt Securities [Member] | Glass Routes, LLC [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments | 0.7 |  |  |  |  | $ 0.6 |  |
Debt Securities [Member] | Onkos Surgical, Inc. [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  |  | $ 5.0 |  |  |
Debt Securities [Member] | Ossio Inc [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  | $ 2.5 |  |  |  |
Debt Securities [Member] | StarCompliance Midco, LLC [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  | $ 23.3 |  |  |  |
Debt Securities [Member] | Avive Solutions Inc [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments |  |  | $ 6.8 |  |  |  |  |
Debt Securities [Member] | Volt Bidco, Inc. [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Payments to Acquire Investments |  | $ 0.1 |  |  |  |  |  |
Debt Securities [Member] | Mirantis, Inc [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Proceeds from Sale, Maturity and Collection of Investments | 15.0 |  |  |  |  |  |  |
Debt Securities [Member] | Havenly, Inc. [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |
Proceeds from Sale, Maturity and Collection of Investments | 11.8 |  |  |  |  |  |  |
Proceeds from Debt Securities, End-of-term, Amount | $ 1.2 |  |  |  |  |  |  |

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- Definition Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481520/505-30-50-4 + Details
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- Definition The cash outflow associated with the purchase of all investments (debt, security, other) during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-13 + Details
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- Definition The cash inflow associated with the sale, maturity and collection of all investments such as debt, security and so forth during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
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