| Offsetting Liabilities [Table Text Block] |
| | | December 31, 2025 | | | December 31, 2024 | |
| | | | | | | Fair Value of | | | | | | | Fair Value of | |
| | | | | | | Unfunded | | | | | | | Unfunded | |
| | | Commitment | | | Commitment | | | Commitment | | | Commitment | |
| | | Amount | | | Liability | | | Amount | | | Liability | |
| | | (In thousands) | | | (In thousands) | |
| Britecore Holdings, Inc. | | $ | 5,000 | | | $ | 50 | | | $ | 2,500 | | | $ | 36 | |
| Candesant Biomedical, Inc. | | | — | | | | — | | | | 10,000 | | | | 151 | |
| Ceribell, Inc. | | | 21,000 | | | | 120 | | | | 21,000 | | | | 120 | |
| Crafty Holdings, Inc. | | | 3,000 | | | | 39 | | | | 5,000 | | | | 65 | |
| Fictiv, Inc. | | | — | | | | — | | | | 30,000 | | | | 236 | |
| GT Medical Technologies, Inc. | | | 20,000 | | | | 100 | | | | 20,000 | | | | 100 | |
| Hometeam Technologies, Inc. | | | — | | | | — | | | | 10,000 | | | | 100 | |
| Infobionic, Inc. | | | 5,000 | | | | 50 | | | | — | | | | — | |
| Long Grove Pharmaceuticals LLC | | | 10,000 | | | | 75 | | | | — | | | | — | |
| MasteryPrep, LLC | | | 5,000 | | | | 50 | | | | — | | | | — | |
| MicroTransponder, Inc. | | | — | | | | — | | | | 15,000 | | | | — | |
| MML US, Inc. | | | 20,000 | | | | 100 | | | | — | | | | — | |
| OneNetworks, Inc. dba Finexio | | | — | | | | — | | | | 5,000 | | | | 26 | |
| Onkos Surgical, Inc. | | | — | | | | — | | | | 5,000 | | | | 27 | |
| Parse Biosciences, Inc. | | | — | | | | — | | | | 15,000 | | | | 252 | |
| Pivot Bio, Inc. | | | — | | | | — | | | | 20,000 | | | | 209 | |
| Samba TV, Inc. | | | 5,000 | | | | 75 | | | | — | | | | — | |
| SafelyYou, Inc. | | | — | | | | — | | | | 5,000 | | | | 73 | |
| Sparkcharge, Inc. | | | 5,000 | | | | 73 | | | | — | | | | — | |
| Standvast Holdings, LLC | | | — | | | | — | | | | 2,500 | | | | 88 | |
| Supply Network Visibility Holdings, LLC | | | 5,000 | | | | 62 | | | | 10,000 | | | | 79 | |
| Ursa Space Systems Inc. | | | — | | | | — | | | | 5,000 | | | | 75 | |
| Total | | $ | 104,000 | | | $ | 794 | | | $ | 181,000 | | | $ | 1,637 | |
|