Document and Entity Information	3 Months Ended
	Mar. 31, 2013
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Entity Registrant Name	Orchid Island Capital, Inc.
Entity Central Index Key	0001518621
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Well Known Seasoned Issuer	No
Entity Common Stock Shares Outstanding	3,341,665
Trading Symbol	ORC