COMMITMENTS AND CONTINGENCIES - Unfunded commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Unfunded commitments
Total Unfunded Commitments	$ 26,385	$ 21,440
Revolving Loan Commitments
Unfunded commitments
Total Unfunded Commitments	15,510	12,113
Revolving Loan Commitments \| Barrett Purchaser LLC (d/b/a SIB Development and Consulting, Inc.)
Unfunded commitments
Total Unfunded Commitments		447
Revolving Loan Commitments \| Branford Filtration, LLC (d/b/a Clean Solutions Group)
Unfunded commitments
Total Unfunded Commitments		387
Revolving Loan Commitments \| Bridgepoint Healthcare, LLC
Unfunded commitments
Total Unfunded Commitments	1,350	1,588
Revolving Loan Commitments \| BUSA Acquisition Co. (d/b/a BankCard USA Merchant Services Inc.)
Unfunded commitments
Total Unfunded Commitments	459
Revolving Loan Commitments \| Claridge Products and Equipment, LLC
Unfunded commitments
Total Unfunded Commitments	70	351
Revolving Loan Commitments \| Coastal Television Broadcasting Group LLC
Unfunded commitments
Total Unfunded Commitments	309	309
Revolving Loan Commitments \| EducationDynamics, LLC
Unfunded commitments
Total Unfunded Commitments	1,199	1,199
Revolving Loan Commitments \| Gulf Winds International Acquisition, LLC (d/b/a Gulf Winds International, Inc.)
Unfunded commitments
Total Unfunded Commitments	194	647
Revolving Loan Commitments \| HC Salon Holdings, Inc. (d/b/a Hair Cuttery)
Unfunded commitments
Total Unfunded Commitments		700
Revolving Loan Commitments \| Leviathan Intermediate Holdco, LLC (d/b/a Unleashed Brands Group)
Unfunded commitments
Total Unfunded Commitments	570	570
Revolving Loan Commitments \| LogicMonitor, Inc.
Unfunded commitments
Total Unfunded Commitments	778
Revolving Loan Commitments \| Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC)
Unfunded commitments
Total Unfunded Commitments	246	572
Revolving Loan Commitments \| Motivational Marketing, LLC (d/b/a Motivational Fulfillment)
Unfunded commitments
Total Unfunded Commitments		709
Revolving Loan Commitments \| MSI Information Services, Inc.
Unfunded commitments
Total Unfunded Commitments		225
Revolving Loan Commitments \| M&M OpCo. LLC (d/b/a Escalent, Inc.)
Unfunded commitments
Total Unfunded Commitments	238	238
Revolving Loan Commitments \| Naviga Inc. (f/k/a Newscycle Solutions, Inc.)
Unfunded commitments
Total Unfunded Commitments		30
Revolving Loan Commitments \| PANOS Brands, LLC
Unfunded commitments
Total Unfunded Commitments	384
Revolving Loan Commitments \| Ribbon Communications Operating Company, Inc. (d/b/a Ribbon Communications Inc.)
Unfunded commitments
Total Unfunded Commitments	880
Revolving Loan Commitments \| Salon Republic Holdings, LLC (d/b/a Salon Republic, LLC)
Unfunded commitments
Total Unfunded Commitments	861	610
Revolving Loan Commitments \| Sleep OpCo LLC (d/b/a Brooklyn Bedding LLC)
Unfunded commitments
Total Unfunded Commitments	2,646	2,646
Revolving Loan Commitments \| Surge Amuze Holdings Inc. (d/b/a Amuze Products II, Inc.)
Unfunded commitments
Total Unfunded Commitments	146
Revolving Loan Commitments \| Telestream Holdings Corporation
Unfunded commitments
Total Unfunded Commitments	241	87
Revolving Loan Commitments \| The Kyjen Company, LLC (d/b/a Outward Hound)
Unfunded commitments
Total Unfunded Commitments		798
Revolving Loan Commitments \| TOT Group, Inc. (d/b/a Netevia Group LLC)
Unfunded commitments
Total Unfunded Commitments	553
Revolving Loan Commitments \| W&A Intermediate Co., LLC (d/b/a Wakefield & Associates, LLC)
Unfunded commitments
Total Unfunded Commitments	515
Revolving Loan Commitments \| W Electric Intermediate Holdings, LLC (d/b/a Westinghouse Electric Corporation)
Unfunded commitments
Total Unfunded Commitments	1,195
Revolving Loan Commitments \| Zephyr Buyer, L.P. (d/b/a The Weather Company, LLC)
Unfunded commitments
Total Unfunded Commitments	1,806
Revolving Loan Commitments \| Trailhead Media LLC
Unfunded commitments
Total Unfunded Commitments	870
Delayed Draw Loan Commitments
Unfunded commitments
Total Unfunded Commitments	10,875	9,327
Delayed Draw Loan Commitments \| Barrett Purchaser LLC (d/b/a SIB Development and Consulting, Inc.)
Unfunded commitments
Total Unfunded Commitments		895
Delayed Draw Loan Commitments \| Midwest Texas Tea CA, LLC (d/b/a US Petroleum Partners, LLC)
Unfunded commitments
Total Unfunded Commitments		648
Delayed Draw Loan Commitments \| Salon Republic Holdings, LLC (d/b/a Salon Republic, LLC)
Unfunded commitments
Total Unfunded Commitments	861	1,407
Delayed Draw Loan Commitments \| Surge Amuze Holdings Inc. (d/b/a Amuze Products II, Inc.)
Unfunded commitments
Total Unfunded Commitments	878
Delayed Draw Loan Commitments \| TOT Group, Inc. (d/b/a Netevia Group LLC)
Unfunded commitments
Total Unfunded Commitments	1,107
Delayed Draw Loan Commitments \| W&A Intermediate Co., LLC (d/b/a Wakefield & Associates, LLC)
Unfunded commitments
Total Unfunded Commitments	1,288
Delayed Draw Loan Commitments \| Arcserve Cayman Opco LP (d/b/a Arcserve (USA), LLC)
Unfunded commitments
Total Unfunded Commitments	1,422
Delayed Draw Loan Commitments \| Avision Holdings, LLC (d/b/a Avision Sales Group)
Unfunded commitments
Total Unfunded Commitments	1,756
Delayed Draw Loan Commitments \| Banner Acquisition Holdings, LLC (d/b/a Banner Industries, Inc.)
Unfunded commitments
Total Unfunded Commitments		140
Delayed Draw Loan Commitments \| StoicLane MidCo, LLC (d/b/a StoicLane Inc.)
Unfunded commitments
Total Unfunded Commitments		$ 6,237
Delayed Draw Loan Commitments \| Trailhead Media LLC
Unfunded commitments
Total Unfunded Commitments	2,174
Delayed Draw Loan Commitments \| Kelso Industries LLC
Unfunded commitments
Total Unfunded Commitments	$ 1,389