| N-2 | Dec. 17, 2022 |
| Cover [Abstract] | |
| Entity Central Index Key | 0001501072 |
| Amendment Flag | false |
| Document Type | POS EX |
| Entity Registrant Name | RIVERNORTH OPPORTUNITIES FUND, INC. |
| Entity Address, Address Line One | 360 South Rosemary Avenue, Suite 1420 |
| Entity Address, City or Town | West Palm Beach |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33401 |
| City Area Code | (303) |
| Local Phone Number | 623-2577 |
| No Substantive Changes, 462(c) | false |
| Exhibits Only, 462(d) | true |
| Entity Well-known Seasoned Issuer | No |
| Entity Emerging Growth Company | false |
| Business Contact [Member] | |
| Cover [Abstract] | |
| Entity Address, Address Line One | 360 South Rosemary Avenue, Suite 1420 |
| Entity Address, City or Town | West Palm Beach |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33401 |
| Contact Personnel Name | Marcus L. Collins |
