Commitments and Contingencies - Summary of Unfunded Commitments under Loan and Financing Agreements (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Other Commitments [Line Items]
Unfunded Commitments	$ 276,008	$ 303,665
First Lien Senior Secured Loan | Access [Member]
Other Commitments [Line Items]
Unfunded Commitments		2,642
First Lien Senior Secured Loan | Ansira Holdings New DD T/L [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,508
First Lien Senior Secured Loan | Caribou Bidco Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments		21
First Lien Senior Secured Loan | Darcy Partners R/C [Member]
Other Commitments [Line Items]
Unfunded Commitments		349
First Lien Senior Secured Loan | DC Blox Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,915
First Lien Senior Secured Loan | MRH Trowe Beteiligungsgesellschaft MBH [Member]
Other Commitments [Line Items]
Unfunded Commitments		7,888
First Lien Senior Secured Loan | Parcel2 Go [Member]
Other Commitments [Line Items]
Unfunded Commitments		33
First Lien Senior Secured Loan | Omni Intermediate R/C [Member]
Other Commitments [Line Items]
Unfunded Commitments		732
First Lien Senior Secured Loan | Reconomy [Member]
Other Commitments [Line Items]
Unfunded Commitments		7,949
First Lien Senior Secured Loan | Spring Finco DD T/L [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,259
Delayed Draw | Abracon Group Holding, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,552	5,046
Delayed Draw | Access [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,507
Delayed Draw | Allworth Financial Group, L.P [Member]
Other Commitments [Line Items]
Unfunded Commitments		7
Delayed Draw | Apollo Intelligence [Member]
Other Commitments [Line Items]
Unfunded Commitments	9,611	9,611
Delayed Draw | Gills Point S [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,262
Delayed Draw | Simplicity [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,470
Delayed Draw | Congress Buyer DD T/L [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,654
Delayed Draw | Caribou Bidco Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments	22
Delayed Draw | Concert Golf Partners Holdco Llc [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,884
Delayed Draw | Concert Golf Partners Holdco DD T/L [Member]
Other Commitments [Line Items]
Unfunded Commitments		2,340
Delayed Draw | Direct Travel, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,175	2,625
Delayed Draw | JHCC Holdings, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments		31
Delayed Draw | Meriplex Communications Ltd [Member]
Other Commitments [Line Items]
Unfunded Commitments	7,030	8,931
Delayed Draw | Morrow Sodali [Member]
Other Commitments [Line Items]
Unfunded Commitments	269	1,345
Delayed Draw | MRHT [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,529
Delayed Draw | New Look (Delaware) Corporation [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,938	1,938
Delayed Draw | New Look Vision Group [Member]
Other Commitments [Line Items]
Unfunded Commitments		62
Delayed Draw | OGH Bidco Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments	6,257	7,440
Delayed Draw | Parcel2 Go [Member]
Other Commitments [Line Items]
Unfunded Commitments	35
Delayed Draw | Premier Imaging, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,816	4,816
Delayed Draw | Reconomy [Member]
Other Commitments [Line Items]
Unfunded Commitments	8,357
Delayed Draw | RoadOne [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,931	5,666
Delayed Draw | Omni Intermediate [Member]
Other Commitments [Line Items]
Unfunded Commitments		504
Delayed Draw | Saltoun [Member]
Other Commitments [Line Items]
Unfunded Commitments		14,358
Delayed Draw | Solaray, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	37
Delayed Draw | Spring Finco BV
Other Commitments [Line Items]
Unfunded Commitments	4,060
Delayed Draw | Superna Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,631	2,631
Delayed Draw | SureWerx [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,013	2,013
Delayed Draw | Taoglas [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,636
Delayed Draw | Titan Cloud Software, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	10,572	11,429
Delayed Draw | TGI Sport Bidco Pty Ltd [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,315
Delayed Draw | Walker Edison [Member]
Other Commitments [Line Items]
Unfunded Commitments	635
Delayed Draw | WSP Initial Term Loan [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,797
Revolver | 9 Story Media Group Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	508	497
Revolver | Arctic Glacier USA Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	829
Revolver | A&R Logistics, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,851	5,735
Revolver | Abracon Group Holding, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,018	2,018
Revolver | Allworth Financial Group, L.P [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,440	2,440
Revolver | Amspec Services, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,756	4,463
Revolver | Ansira Holdings, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,700
Revolver | Apollo Intelligence [Member]
Other Commitments [Line Items]
Unfunded Commitments	6,007	7,208
Revolver | Gills Point S [Member]
Other Commitments [Line Items]
Unfunded Commitments	518
Revolver | Applitools [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,430	3,430
Revolver | Aramsco, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,387	2,709
Revolver | Simplicity [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,454
Revolver | ASP-r-pac Acquisition Co LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,253	3,253
Revolver | Avalon Acquiror, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,042	7,353
Revolver | Batteries Plus Holding Corporation [Member]
Other Commitments [Line Items]
Unfunded Commitments		3,334
Revolver | Concert Golf Partners Holdco Llc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,492
Revolver | Congress Buyer R/C [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,102
Revolver | CPS Group Holdings, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,157	4,933
Revolver | Cloud Technology Solutions (CTS) [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,705
Revolver | Appriss Holdings Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	753	753
Revolver | Concert Golf Partners Holdco R/C [Member]
Other Commitments [Line Items]
Unfunded Commitments		2,492
Revolver | Darcy Partners [Member]
Other Commitments [Line Items]
Unfunded Commitments	349
Revolver | Datix Bidco Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments	2
Revolver | Efficient Collaborative Retail Marketing Company, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	992	2,267
Revolver | Element Buyer, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,250	4,250
Revolver | Eleven Software [Member]
Other Commitments [Line Items]
Unfunded Commitments	397	1,339
Revolver | Grammer Purchaser, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	234	234
Revolver | Great Expressions Dental Center PC [Member]
Other Commitments [Line Items]
Unfunded Commitments		127
Revolver | Gulf Winds International [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,292	5,292
Revolver | Intoxalock [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,430	3,087
Revolver | Image Trend [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,000
Revolver | GSP Holdings, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,267
Revolver | JHCC Holdings, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,833	1,088
Revolver | Kellstrom Commercial Aerospace, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,196	3,092
Revolver | Mach Acquisition R/C [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,511	6,026
Revolver | Margaux Acquisition Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	735	1,915
Revolver | Margaux UK Finance Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments	98	603
Revolver | MasLabor [Member]
Other Commitments [Line Items]
Unfunded Commitments		345
Revolver | Meriplex Communications Ltd [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,824	2,542
Revolver | C B Nike Intermediate Co Ltd [Member]
Other Commitments [Line Items]
Unfunded Commitments	44	44
Revolver | Morrow Sodali [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,365	1,312
Revolver | MRI Software LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,782	1,782
Revolver | MZR Buyer, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,473	5,210
Revolver | NearMap [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,652	4,652
Revolver | New Look Vision Group [Member]
Other Commitments [Line Items]
Unfunded Commitments	213	571
Revolver | Paisley Bidco Limited [Member]
Other Commitments [Line Items]
Unfunded Commitments		1,460
Revolver | Pyramid Global Hospitality [Member]
Other Commitments [Line Items]
Unfunded Commitments	3,482
Revolver | Refine Intermediate, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,340	5,340
Revolver | Revalize, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,340	1,340
Revolver | RoadOne [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,119	3,388
Revolver | RoC Opco LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	10,241	7,510
Revolver | Omni Intermediate [Member]
Other Commitments [Line Items]
Unfunded Commitments	732
Revolver | WC IGigawatt Purchaser [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,931	2,253
Revolver | Saturn Purchaser Corp [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,883	4,883
Revolver | Service Master [Member]
Other Commitments [Line Items]
Unfunded Commitments	9,628	7,470
Revolver | Smartronix [Member]
Other Commitments [Line Items]
Unfunded Commitments	6,321	6,321
Revolver | Solaray, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,383	6,800
Revolver | SunMed Group Holdings, LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,229	639
Revolver | Superna Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,631	2,631
Revolver | SureWerx [Member]
Other Commitments [Line Items]
Unfunded Commitments	885	939
Revolver | Swoogo LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,243	1,243
Revolver | Taoglas [Member]
Other Commitments [Line Items]
Unfunded Commitments	881
Revolver | TEI Holdings Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,226	4,221
Revolver | Titan Cloud Software, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	5,714	5,714
Revolver | TLC Purchaser, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	4,113	1,828
Revolver | V Global Holdings LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments	7,293	9,690
Revolver | Ventiv Holdco, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	1,686	1,704
Revolver | Whitcraft LLC [Member]
Other Commitments [Line Items]
Unfunded Commitments		362
Revolver | Whitcraft Paradigm [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,194
Revolver | World Insurance [Member]
Other Commitments [Line Items]
Unfunded Commitments	931	326
Revolver | WSP Revolving Loan [Member]
Other Commitments [Line Items]
Unfunded Commitments		402
Revolver | WSP Revolver [Member]
Other Commitments [Line Items]
Unfunded Commitments	449
Revolver | WU Holdco, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	2,367	2,705
Revolver | YLG Holdings, Inc [Member]
Other Commitments [Line Items]
Unfunded Commitments	$ 7,947	$ 8,545