Related Party Transactions (Management Agreement) (Details) (Bimini Advisors, LLC [Member])	3 Months Ended
	Mar. 31, 2015
First $250 million of Equity [Member]
Related Party Transaction [Line Items]
Annual management fee as a percent of equity	1.50%
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%
Greater than $500 million of Equity [Member]
Related Party Transaction [Line Items]
Annual management fee as a percent of equity	1.00%