XML 43 R33.htm IDEA: XBRL DOCUMENT
v3.22.2.2

INVESTMENTS - Industry Composition (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2022 | Dec. 31, 2021
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 2,332,492 | [1] | $ 1,800,594 | [2]
Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 1,213,233 |  | $ 1,245,647 |
Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 115,670 |  |  |
Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  |  |
Aerospace and Defense |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 110,440 |  | $ 91,129 |
Aerospace and Defense | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 68,990 |  | $ 71,857 |
Aerospace and Defense | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.70% |  | 5.10% |
Aerospace and Defense | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.70% |  | 5.80% |
Automotive |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 65,696 |  | $ 55,875 |
Automotive | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 20,022 |  | $ 18,626 |
Automotive | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 2,362 |  |  |
Automotive | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.80% |  | 3.10% |
Automotive | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 1.50% |
Automotive | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.10% |  |  |
Banking, Finance, Insurance and Real Estate |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 257,752 |  | $ 208,397 |
Banking, Finance, Insurance and Real Estate | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 100,624 |  | $ 109,961 |
Banking, Finance, Insurance and Real Estate | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 1,541 |  |  |
Banking, Finance, Insurance and Real Estate | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 11.10% |  | 11.60% |
Banking, Finance, Insurance and Real Estate | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 8.30% |  | 8.80% |
Banking, Finance, Insurance and Real Estate | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.30% |  |  |
Beverage, Food and Tobacco |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 34,768 |  | $ 38,985 |
Beverage, Food and Tobacco | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 26,115 |  | $ 30,352 |
Beverage, Food and Tobacco | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 4,069 |  |  |
Beverage, Food and Tobacco | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.50% |  | 2.20% |
Beverage, Food and Tobacco | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.20% |  | 2.40% |
Beverage, Food and Tobacco | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.50% |  |  |
Capital Equipment |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 50,613 |  | $ 42,916 |
Capital Equipment | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 26,421 |  | $ 17,006 |
Capital Equipment | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 9,231 |  |  |
Capital Equipment | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.20% |  | 2.40% |
Capital Equipment | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.20% |  | 1.40% |
Capital Equipment | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 8.00% |  |  |
Chemicals, Plastics, and Rubber |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 85,121 |  | $ 32,234 |
Chemicals, Plastics, and Rubber | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 31,236 |  | $ 24,665 |
Chemicals, Plastics, and Rubber | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 2,832 |  |  |
Chemicals, Plastics, and Rubber | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.60% |  | 1.80% |
Chemicals, Plastics, and Rubber | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.60% |  | 2.00% |
Chemicals, Plastics, and Rubber | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.40% |  |  |
Construction and Building |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 40,733 |  | $ 62,083 |
Construction and Building | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 15,700 |  | $ 14,506 |
Construction and Building | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 1,892 |  |  |
Construction and Building | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 3.40% |
Construction and Building | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.30% |  | 1.20% |
Construction and Building | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.60% |  |  |
Consumer goods: Durable |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 54,859 |  | $ 47,316 |
Consumer goods: Durable | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 18,181 |  | $ 10,294 |
Consumer goods: Durable | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 1,365 |  |  |
Consumer goods: Durable | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.40% |  | 2.60% |
Consumer goods: Durable | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.50% |  | 0.80% |
Consumer goods: Durable | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.20% |  |  |
Consumer goods: Non-durable |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 26,196 |  | $ 28,306 |
Consumer goods: Non-durable | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 21,548 |  | $ 23,886 |
Consumer goods: Non-durable | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.60% |
Consumer goods: Non-durable | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.80% |  | 1.90% |
Containers, Packaging and Glass |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 37,425 |  | $ 10,218 |
Containers, Packaging and Glass | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 22,968 |  | $ 25,277 |
Containers, Packaging and Glass | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 1,817 |  |  |
Containers, Packaging and Glass | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.60% |  | 0.60% |
Containers, Packaging and Glass | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.90% |  | 2.00% |
Containers, Packaging and Glass | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.60% |  |  |
Energy: Electricity |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 7,241 |  | $ 12,190 |
Energy: Electricity | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 15,239 |  | $ 10,571 |
Energy: Electricity | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.30% |  | 0.70% |
Energy: Electricity | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.30% |  | 0.80% |
Energy: Oil and Gas |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 4,561 |  | $ 5,774 |
Energy: Oil and Gas | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 4,689 |  | $ 5,091 |
Energy: Oil and Gas | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.20% |  | 0.30% |
Energy: Oil and Gas | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.40% |  | 0.40% |
Environmental Industries |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 50,137 |  | $ 8,081 |
Environmental Industries | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 7,244 |  | $ 7,563 |
Environmental Industries | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 8,417 |  |  |
Environmental Industries | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.10% |  | 0.40% |
Environmental Industries | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.60% |  | 0.60% |
Environmental Industries | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 7.30% |  |  |
Healthcare and Pharmaceuticals |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 169,542 |  | $ 134,286 |
Healthcare and Pharmaceuticals | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 125,941 |  | $ 128,495 |
Healthcare and Pharmaceuticals | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 14,272 |  |  |
Healthcare and Pharmaceuticals | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 7.30% |  | 7.50% |
Healthcare and Pharmaceuticals | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 10.40% |  | 10.30% |
Healthcare and Pharmaceuticals | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.30% |  |  |
High Tech Industries |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 309,080 |  | $ 139,590 |
High Tech Industries | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 158,946 |  | $ 171,960 |
High Tech Industries | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 13,825 |  |  |
High Tech Industries | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 13.30% |  | 7.70% |
High Tech Industries | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 13.10% |  | 13.80% |
High Tech Industries | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.00% |  |  |
Hotel, Gaming and Leisure |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 49,799 |  | $ 27,553 |
Hotel, Gaming and Leisure | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 22,734 |  | $ 35,383 |
Hotel, Gaming and Leisure | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.10% |  | 1.50% |
Hotel, Gaming and Leisure | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.90% |  | 2.80% |
Investment Funds and Vehicles |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 149,761 |  | $ 143,104 |
Investment Funds and Vehicles | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 80,201 |  | $ 127,092 |
Investment Funds and Vehicles | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 6.40% |  | 7.90% |
Investment Funds and Vehicles | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 6.60% |  | 10.20% |
Media: Advertising, Printing and Publishing |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 54,147 |  | $ 46,414 |
Media: Advertising, Printing and Publishing | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 6,096 |  | $ 18,423 |
Media: Advertising, Printing and Publishing | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 10,038 |  |  |
Media: Advertising, Printing and Publishing | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.30% |  | 2.60% |
Media: Advertising, Printing and Publishing | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.50% |  | 1.50% |
Media: Advertising, Printing and Publishing | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 8.70% |  |  |
Media: Broadcasting and Subscription |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 8,317 |  | $ 7,441 |
Media: Broadcasting and Subscription | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 34,000 |  | $ 37,840 |
Media: Broadcasting and Subscription | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.40% |  | 0.40% |
Media: Broadcasting and Subscription | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.80% |  | 3.00% |
Media: Diversified and Production |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 64,810 |  | $ 52,887 |
Media: Diversified and Production | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 27,720 |  | $ 21,059 |
Media: Diversified and Production | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 5,407 |  |  |
Media: Diversified and Production | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.80% |  | 2.90% |
Media: Diversified and Production | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.30% |  | 1.70% |
Media: Diversified and Production | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.70% |  |  |
Metals and Mining |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 34,003 |  | $ 10,684 |
Metals and Mining | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 5,054 |  | $ 5,792 |
Metals and Mining | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.50% |  | 0.60% |
Metals and Mining | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.40% |  | 0.50% |
Retail |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 42 |  | $ 0 |
Retail | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 14,222 |  | $ 14,420 |
Retail | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 5,647 |  |  |
Retail | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.00% |  | 0.00% |
Retail | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.20% |  | 1.20% |
Retail | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.90% |  |  |
Services: Business |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 381,362 |  | $ 342,758 |
Services: Business | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 192,727 |  | $ 151,723 |
Services: Business | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 11,768 |  |  |
Services: Business | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 16.40% |  | 19.00% |
Services: Business | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 15.90% |  | 12.20% |
Services: Business | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 10.20% |  |  |
Services: Consumer |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 78,465 |  | $ 65,801 |
Services: Consumer | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 50,535 |  | $ 55,156 |
Services: Consumer | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 8,361 |  |  |
Services: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.40% |  | 3.70% |
Services: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.10% |  | 4.40% |
Services: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 7.20% |  |  |
Structured products |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 62,603 |  | $ 24,662 |
Structured products | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 0 |  | $ 5,409 |
Structured products | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.70% |  | 1.40% |
Structured products | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.00% |  | 0.40% |
Telecommunications |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 23,829 |  | $ 45,182 |
Telecommunications | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 38,311 |  | $ 36,036 |
Telecommunications | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.00% |  | 2.50% |
Telecommunications | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.10% |  | 2.90% |
Transportation: Cargo |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 73,174 |  | $ 86,964 |
Transportation: Cargo | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 54,903 |  | $ 49,103 |
Transportation: Cargo | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 6,181 |  |  |
Transportation: Cargo | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.10% |  | 4.80% |
Transportation: Cargo | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.50% |  | 3.90% |
Transportation: Cargo | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.30% |  |  |
Transportation: Consumer |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 25,393 |  | $ 12,231 |
Transportation: Consumer | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | 12,499 |  | $ 6,546 |
Transportation: Consumer | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 4,855 |  |  |
Transportation: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 0.70% |
Transportation: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.00% |  | 0.50% |
Transportation: Consumer | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.20% |  |  |
Utilities: Electric |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 17,291 |  | $ 12,857 |
Utilities: Electric | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 3,181 |  | $ 3,265 |
Utilities: Electric | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.70% |  | 0.70% |
Utilities: Electric | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.20% |  | 0.30% |
Utilities: Oil and Gas |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 4,707 |  | $ 4,677 |
Utilities: Oil and Gas | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 6,915 |  | $ 6,870 |
Utilities: Oil and Gas | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.20% |  | 0.30% |
Utilities: Oil and Gas | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.50% |  | 0.60% |
Wholesale |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 625 |  | $ 0 |
Wholesale | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 0 |  | $ 945 |
Wholesale | Percentage of Total Portfolio | Industry Concentration Risk Member |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.00% |  | 0.00% |
Wholesale | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.00% |  | 0.10% |
Forest Products & Paper | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 271 |  | $ 475 |
Forest Products & Paper | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Fair value of investment owned | $ 1,790 |  |  |
Forest Products & Paper | Percentage of Total Portfolio | Industry Concentration Risk Member | Jocassee Partners LLC |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.00% |  | 0.00% |
Forest Products & Paper | Percentage of Total Portfolio | Industry Concentration Risk Member | Sierra JV |  |  |  |
Schedule of Investments [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.50% |  |  |
[1] | Some or all of the investment is or will be encumbered as security for the Company's $1.1 billion senior secured credit facility with ING Capital LLC initially entered into in February 2019 (as amended, restated and otherwise modified from time to time, the "February 2019 Credit Facility").
[2] | Some or all of the investment is or will be encumbered as security for the Company's senior secured credit facility with ING Capital LLC.

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9054-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13531-108611 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13537-108611 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section 50 -Paragraph 6 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 5D -Subparagraph (SX 210.12-13D(Column C)) -URI https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-12B(Column C)) -URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010 + Details
Name: | us-gaap_InvestmentOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap-supplement_InvestmentCompanyNonconsolidatedSubsidiaryAxis=bbdc_JocasseePartnersLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap-supplement_InvestmentCompanyNonconsolidatedSubsidiaryAxis=bbdc_SierraJVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=bbdc_InvestmentOwnedAtFairValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=bbdc_IndustryConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_AerospaceAndDefenseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_AutomotiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_BankingFinanceInsuranceAndRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_BeverageFoodAndTobaccoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_CapitalEquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ChemicalsPlasticsAndRubberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ConstructionAndBuildingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ConsumerGoodsDurableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ConsumerGoodsNonDurableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ContainersPackagingAndGlassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_EnergyElectricityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_EnergyOilAndGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_EnvironmentalIndustriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_HealthcareAndPharmaceuticalsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_HighTechIndustriesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_HotelGamingAndLeisureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_InvestmentFundsAndVehiclesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_MediaAdvertisingPrintingAndPublishingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_MediaBroadcastingAndSubscriptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_MediaDiversifiedAndProductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_MetalsAndMiningMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=us-gaap-supplement_RetailSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ServicesBusinessMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ServicesConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_StructuredProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_TelecommunicationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_TransportationCargoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_TransportationConsumerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_UtilitiesElectricMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_UtilitiesOilAndGasMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_WholesaleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_EquitySecuritiesByIndustryAxis=bbdc_ForestProductsPaperMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |