| Cover | Oct. 29, 2024 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 29, 2024 |
| Entity Registrant Name | OFS Capital Corporation |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 814-00813 |
| Entity Tax Identification Number | 46-1339639 |
| Entity Address, Address Line One | 10 S. Wacker Drive, Suite 2500 |
| Entity Address, City or Town | Chicago |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60606 |
| City Area Code | 847 |
| Local Phone Number | 734-2000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001487918 |
| Amendment Flag | false |
| Common Stock, $0.01 par value per share | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | OFS |
| Security Exchange Name | NASDAQ |
| 4.95% Notes due 2028 | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 4.95% Notes due 2028 |
| Trading Symbol | OFSSH |
| Security Exchange Name | NASDAQ |
