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Schedule of Interest Rate Caps [Table Text Block] Tabular disclosure of interest rate caps. Executive Officers and Certain Employees [Member] Related to executive officers and certain employees. Fair Value, Inputs, Level 3 [Member] Fair Value Hierarchy and NAV [Domain] Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] Fair Value Hierarchy and NAV [Axis] us-gaap_RepurchaseAgreementCounterpartyAmountAtRisk Repurchase Agreement Counterparty, Amount at Risk Overnight SOFR Index Rate [Member] Related to overnight SOFR index rate. Derivative Swap Positions Percentage [Table Text Block] Tabular disclosure for derivative swap positions percentage. Schedule of Repurchase Agreements [Table Text Block] us-gaap_RepurchaseAgreementsInterestExpenseAmount Interest expense us-gaap_InterestIncomeExpenseNet Net interest (expense) income Receive index, percent The derivative swap receive index percent. Three Month LIBOR Index Rate [Member] Related to three month LIBOR index rate. 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Share Repurchase Program [Axis] Equity Component [Domain] Management Fees Policy [Policy Text Block] Disclosure of accounting policy for management fees to external managers. June 2021 Equity Distribution Agreement [Member] Relating to June 2021 Equity Distribution Agreement October 2021 Equity Distribution Agreement [Member] Relating to the October 2021 Equity Distribution Agreement Carrying value of RMBS sold Amount represents the carrying value of investments sold Pass Through Certificate [Member] Relating to pass through certificates. Fixed Rate Mortgages [Member] Relating to fixed rate mortgages Interest Only Securities [Member] Relating to interest only securities Inverse Interest Only Securities [Member] Relating to inverse interest only securities. 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Open Equity The cumulative amount of gains (losses) on open future positions Cash and Cash Equivalents, Policy [Policy Text Block] Document Quarterly Report Entity Incorporation, State or Country Code Accounting Policies [Abstract] Document Transition Report Basis of Accounting, Policy [Policy Text Block] Entity Interactive Data Current Dividends declared per common share (in dollars per share) Common Stock, Dividends, Per Share, Declared (in dollars per share) Related Party [Member] Related and Nonrelated Party Status [Domain] Repurchase agreements Securities Sold under Agreements to Repurchase Weighted average months to expiration (Month) Average months to expiration for derivative instruments. Schedule of Interest Rate Swaps [Table Text Block] Tabular disclosure of interest rate swaps relating to derivatives and other hedging instruments. Security Exchange Name Three to Five Years [Member] Relating to three to five years. 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Schedule of Financial Instruments Pledged as Collateral From Counterparties [Table Text Block] Tabular disclosure of assets pledged to the Company by repurchase agreement and derivative counterparties Statement of Stockholders' Equity [Abstract] Cash Amount of assets pledged to company from counterparties Income Statement [Abstract] orc_StockRepurchaseProgramAdditionalSharesAuthorized Stock Repurchase Program, Additional Shares Authorized (in shares) The number of additional shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. 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Dividends Declared [Table Text Block] CASH FLOWS FROM FINANCING ACTIVITIES: Schedule of Common Stock Outstanding Roll Forward [Table Text Block] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Dividends payable us-gaap_PaymentsForProceedsFromDerivativeInstrumentInvestingActivities Net (payments on) proceeds from derivative instruments Deferred Stock Units [Member] Relating to deferred stock units Net Estimated Fair Value Derivative, Fair Value, Net Net carrying value orc_SharebasedCompensationArrangementBySharebasedPaymentAwardNonoptionsWeightedAverageGrantDateFairValue Outstanding, grant date fair value (in dollars per share) Outstanding, grant date fair value (in dollars per share) Weighted average grant-date fair value of outstanding non options Granted and vested, grant date fair value (in dollars per share) The weighted average grant-date fair value of non-options granted during the reporting period as calculated by applying the disclosed pricing methodology. Unvested dividend eligible share based compensation outstanding at the balance sheet date (in shares) The total number of unvested share based payments awards included in the calculation of weighted average shares Effect of weighting (in shares) The effect of weighting on the number of shares outstanding during the period Interest Rate Swaption [Member] Offsetting Assets [Table Text Block] Pledged Status [Domain] Pledged Status [Axis] orc_AutomaticRenewalPeriodOfManagementAgreement Automatic Renewal Period Of Management Agreement (Year) Automatic renewal period of management agreement. Bimini Advisors LLC [Member] Relating to Bimini Advisors LLC. us-gaap_StockholdersEquity Total Stockholders' Equity Balances Balances orc_ManagementFeeAndOverheadExpense Management Fee and Overhead Expense Amount of management fee and overhead expense recognized in period Position [Domain] Long [Member] Class of Stock [Axis] Short [Member] Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Position [Axis] orc_EntitySharesOwned Entity Shares Owned (in shares) Amount of the entities shares that are owned by another entity Interest Rate Swap [Member] orc_EntityOwnershipPercentage Entity Ownership Percentage Percent of the entity's common stock that is owned by another entity Bimini Capital Management Inc [Member] Relating to Bimini Capital Management Inc us-gaap_DerivativeFixedInterestRate Derivative, Fixed Interest Rate Schedule of Notional Amounts of Outstanding Derivative Positions [Table Text Block] Schedule of Interest Rate Swaption Agreements [Table Text Block] Tabular disclosure of interest rate swaption agreements Interest Rate Cap [Member] Interest Rate Floor [Member]