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Note 8 - Financial Instruments With Off-balance-sheet Risk - Unfunded Commitments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Unfunded commitments, principal balance | $ 181,750 | $ 190,000
Fair value of unfunded commitment liability | 2,036 | 1,761
BrightInsight, Inc. [Member] |  |
Unfunded commitments, principal balance | 18,250 | 21,000
Fair value of unfunded commitment liability | 241 | 278
Britecore Holdings, Inc. [Member] |  |
Unfunded commitments, principal balance | 5,000 | 5,000
Fair value of unfunded commitment liability | 72 | 66
Candesant Biomedical Corporation [Member] |  |
Unfunded commitments, principal balance | 10,000 | 0
Fair value of unfunded commitment liability | 151 | 0
Castle Creek Biosciences [Member] |  |
Unfunded commitments, principal balance | 4,000 | 4,000
Fair value of unfunded commitment liability | 72 | 72
Divergent Technologies, Inc. [Member] |  |
Unfunded commitments, principal balance | 11,250 | 22,500
Fair value of unfunded commitment liability | 118 | 236
Elligo Healthcare Research, Inc. [Member] |  |
Unfunded commitments, principal balance | 15,000 | 0
Fair value of unfunded commitment liability | 194 | 0
Engage3, LLC [Member] |  |
Unfunded commitments, principal balance | 0 | 8,000
Fair value of unfunded commitment liability | 0 | 40
Groundspeed Analytics, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 15,000
Fair value of unfunded commitment liability | 0 | 150
Hound Labs, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 7,500
Fair value of unfunded commitment liability | 0 | 88
KSQ Therapeutics, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 10,000
Fair value of unfunded commitment liability | 0 | 100
Lytics, Inc. [Member] |  |
Unfunded commitments, principal balance | 4,000 | 5,000
Fair value of unfunded commitment liability | 52 | 65
Mirantis, Inc [Member] |  |
Unfunded commitments, principal balance | 15,000 | 0
Fair value of unfunded commitment liability | 136 | 0
Native Microbials, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 7,500
Fair value of unfunded commitment liability | 0 | 72
Noodle Partners, Inc. [Member] |  |
Unfunded commitments, principal balance | 5,000 | 0
Fair value of unfunded commitment liability | 61 | 0
Optoro, Inc. [Member] |  |
Unfunded commitments, principal balance | 6,250 | 15,000
Fair value of unfunded commitment liability | 0 | 38
PDS Biotechnology Corporation [Member] |  |
Unfunded commitments, principal balance | 0 | 10,000
Fair value of unfunded commitment liability | 0 | 158
Robin Healthcare, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 10,000
Fair value of unfunded commitment liability | 0 | 100
SafelyYou, Inc [Member] |  |
Unfunded commitments, principal balance | 20,000 | 0
Fair value of unfunded commitment liability | 270 | 0
Scientia Vascular, Inc. [Member] |  |
Unfunded commitments, principal balance | 5,000 | 10,000
Fair value of unfunded commitment liability | 55 | 110
Slingshot Aerospace, Inc. [Member] |  |
Unfunded commitments, principal balance | 0 | 5,000
Fair value of unfunded commitment liability | 0 | 64
Sonex Health, Inc. [Member] |  |
Unfunded commitments, principal balance | 15,000 | 0
Fair value of unfunded commitment liability | 176 | 0
Supply Network Visibility Holdings, LLC [Member] |  |
Unfunded commitments, principal balance | 10,000 | 0
Fair value of unfunded commitment liability | 35 | 0
Swift Health Systems Inc. [Member] |  |
Unfunded commitments, principal balance | 11,500 | 25,500
Fair value of unfunded commitment liability | 0 | 105
Tallac Therapeutics, Inc [Member] |  |
Unfunded commitments, principal balance | 10,000 | 0
Fair value of unfunded commitment liability | 229 | 0
Temperpack Technologies, Inc [Member] |  |
Unfunded commitments, principal balance | 6,500 | 9,000
Fair value of unfunded commitment liability | 14 | 19
Viken Detection Corporation [Member] |  |
Unfunded commitments, principal balance | 10,000 | 0
Fair value of unfunded commitment liability | $ 160 | $ 0

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