| N-2 | 6 Months Ended |
| Jan. 31, 2024 | |
| Cover [Abstract] | |
| Entity Central Index Key | 0001501072 |
| Amendment Flag | false |
| Entity Inv Company Type | N-2 |
| Document Type | N-CSRS |
| Entity Registrant Name | RiverNorth Opportunities Fund, Inc. |
| Capital Stock, Long-Term Debt, and Other Securities [Abstract] | |
| Document Period End Date | Jan. 31, 2024 |
