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Note 9 - Fair Value Disclosures - Quantitative Information About Level 3 Fair Value Measurements (Details) $ in Thousands | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
--- | --- | ---
Total other investments, at fair value | $ 58,540 | $ 14,864
Collateralized Loan Obligations [Member] |  |
Total other investments, at fair value |  | 2,522
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Yield Rate [Member] |  |
Total other investments, at fair value |  | $ 2,522
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Yield Rate [Member] | Weighted Average [Member] |  |
Other investments, measurement |  | 0.179
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Yield Rate [Member] | Minimum [Member] |  |
Other investments, measurement |  | 0.169
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Yield Rate [Member] | Maximum [Member] |  |
Other investments, measurement |  | 0.192
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Expected Term [Member] | Weighted Average [Member] |  |
Other investments, measurement |  | 0.058
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Expected Term [Member] | Minimum [Member] |  |
Other investments, measurement |  | 0.053
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Expected Term [Member] | Maximum [Member] |  |
Other investments, measurement |  | 0.065
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Default Rate [Member] | Weighted Average [Member] |  |
Other investments, measurement |  | 0.02
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Default Rate [Member] | Minimum [Member] |  |
Other investments, measurement |  | 0.02
Collateralized Loan Obligations [Member] | Valuation Technique, Discounted Cash Flow [Member] | Fair Value, Inputs, Level 3 [Member] | Measurement Input, Default Rate [Member] | Maximum [Member] |  |
Other investments, measurement |  | 0.02

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- Definition Value of input used to measure alternative investment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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