| Document And Entity Information | Jul. 29, 2024 |
| Document Information [Line Items] | |
| Entity Registrant Name | Oxford Lane Capital Corp. |
| Document Type | 424B3 |
| Amendment Flag | false |
| Entity Central Index Key | 0001495222 |
| N-2 - $ / shares | Jul. 29, 2024 | Jun. 30, 2024 | Mar. 31, 2024 |
| Cover [Abstract] | |||
| Entity Central Index Key | 0001495222 | ||
| Amendment Flag | false | ||
| Document Type | 424B3 | ||
| Entity Registrant Name | Oxford Lane Capital Corp. | ||
| Other Annual Expenses [Abstract] | |||
| Acquired Fund Fees and Expenses, Note [Text Block] | Our total expenses for the quarter ended June 30, 2024 were approximately $33.8 million, compared with total expenses of approximately $31.7 million for the quarter ended March 31, 2024. | ||
| General Description of Registrant [Abstract] | |||
| Lowest Price or Bid, NAV | $ 4.9 | ||
| Highest Price or Bid, NAV | $ 4.91 | ||
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |||
| Outstanding Security, Title [Text Block] | common stock | ||
| Outstanding Security, Authorized [Shares] | 82,574,949 |
