Related Party Transactions (Management Agreement) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Greater than $250 million but less than or equal to $500 million Equity [Member]
Related Party Transaction [Line Items]
Equity threshold required to trigger allocation of overheads	250,000,000
Greater than $500 million of Equity [Member]
Related Party Transaction [Line Items]
Equity threshold required to trigger allocation of overheads	500,000,000
Bimini Advisors, LLC [Member] | First $250 million of Equity [Member]
Related Party Transaction [Line Items]
Annual management fee as a percent of equity	1.50%	1.50%
Bimini Advisors, LLC [Member] | Greater than $250 million but less than or equal to $500 million Equity [Member]
Related Party Transaction [Line Items]
Annual management fee as a percent of equity	1.25%	1.25%
Equity threshold required to trigger allocation of overheads		250,000,000
Bimini Advisors, LLC [Member] | Greater than $500 million of Equity [Member]
Related Party Transaction [Line Items]
Annual management fee as a percent of equity	1.00%	1.00%
Equity threshold required to trigger allocation of overheads		500,000,000