| Document And Entity Information | Feb. 23, 2023 |
| Document Information [Line Items] | |
| Entity, Registrant Name | Orchid Island Capital, Inc. |
| Document, Type | 8-K |
| Document, Period End Date | Feb. 23, 2023 |
| Entity, Incorporation, State or Country Code | MD |
| Entity, File Number | 001-35236 |
| Entity, Tax Identification Number | 27-3269228 |
| Entity, Address, Address Line One | 3305 Flamingo Drive |
| Entity, Address, City or Town | Vero Beach |
| Entity, Address, State or Province | FL |
| Entity, Address, Postal Zip Code | 32963 |
| City Area Code | 772 |
| Local Phone Number | 231-1400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | ORC |
| Security Exchange Name | NYSE |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001518621 |
