Percentage that book value per share has declined by.

No definition available.

Name:	orc_DeclineOfBookValuePerShare
Namespace Prefix:	orc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of increase (decrease) in share based awards due to impairment.

+ References

No definition available.

+ Details

Name:	orc_SharebasedCompensationArrangementBySharebasedPaymentAwardIncreaseDecreaseInNumberOfAwardsDueToImpairment
Namespace Prefix:	orc_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost accrued for award under share-based payment arrangement.

+ References

No definition available.

+ Details

Name:	orc_SharebasedPaymentArrangementAmountAccrued
Namespace Prefix:	orc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfOutstandingStockMaximum
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_AwardTypeAxis=orc_StockAwardsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PlanNameAxis=orc_The2021IncentivePlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Note 9 - Stock Incentive Plan (Details Textual) - USD ($) $ in Millions	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Minimum [Member]
Decline of Book Value Per Share	15.00%	10.00%
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Increase (Decrease) in Number of Awards Due to Impairment (in shares)			(14,365)
Stock Awards [Member]
Share-Based Payment Arrangement, Amount Accrued			$ 0.6	$ 0.6
The 2021 Incentive Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum			10.00%
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			1,473,324