Related Party Transactions - Narrative (Details) (USD $)	12 Months Ended				2 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 [BiminiCapitalManagementIncMember]	Dec. 31, 2011 [BiminiCapitalManagementIncMember]	Feb. 20, 2013 [BiminiAdvisorsLlcMember]	Dec. 31, 2012 [BiminiAdvisorsLlcMember]	Dec. 31, 2012 [WColemanBittingMember]	Dec. 31, 2011 [WColemanBittingMember]
Related Party Transaction [Line Items]
Initial Term Of Management Agreement			1 year		3 years
Automatic Renewal Period Of Management Agreement			1 year		1 year
Management Fees And Allocated Expenses	$ 335,000	$ 253,000	$ 335,000	$ 253,000
Due From Bimini	45,126	0	45,126	0
Due To Bimini	0	238,061	0	238,061
Purchases of MBS FV			1,071,000
Purchases of MBS Accrued Interest			15,000
Offering Expenses Paid					2,957,000	247,000
FlatWorld Failed Merger Costs						833,000
Consulting Fees							$ 30,000	$ 71,000