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v3.25.4

Note 2 - Mortgage-backed Securities and U.S. Treasury Securities, at Fair Value (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Notional Balance, Interest Only Securities Portfolio, Amount | $ 72,900 | $ 85,800 |
Notional Balance, Inverse Interest Only Securities Portfolio, Amount | 17,700 | 22,000 |
Investment Sold at Carrying Value | $ (1,386,412) | (458,874) | $ (820,275)
Collateralized Mortgage-Backed Securities [Member] |  |  |
Investment Sold at Carrying Value |  | $ 221,700 |

X
- Definition Amount represents the carrying value of investments sold + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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X
- Definition Represents the notional balance for the interest only securities portfolio. + References No definition available. + Details
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Namespace Prefix: | orc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Represents the notional balance for the inverse interest only securities portfolio. + References No definition available. + Details
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Namespace Prefix: | orc_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |