Stockholders' Equity (Details Textual) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			6 Months Ended		12 Months Ended	6 Months Ended	12 Months Ended				12 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended	1 Months Ended		3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2008	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2012 Employee Stock Option [Member]	Dec. 31, 2012 June 30, 2016 [Member]	Dec. 31, 2012 June 30, 2017 [Member]	Dec. 31, 2012 Minimum [Member]	Mar. 31, 2013 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Mar. 31, 2013 Maximum [Member]	Jun. 30, 2013 Phantom Share Units [Member]	Jun. 30, 2012 Phantom Share Units [Member]	Jun. 30, 2013 Phantom Share Units [Member]	Jun. 30, 2012 Phantom Share Units [Member]	Jun. 30, 2013 Equity Option [Member]	Jun. 30, 2012 Equity Option [Member]	Jun. 30, 2013 Equity Option [Member]	Mar. 31, 2013 Time Based Restricted Stock [Member]	Mar. 31, 2013 Performance Based Restricted Stock [Member]	Jun. 30, 2013 Equity Incentive Plan [Member]	Jun. 30, 2012 Equity Incentive Plan [Member]	Jun. 30, 2013 Equity Incentive Plan [Member]	Jun. 30, 2012 Equity Incentive Plan [Member]	Jun. 30, 2013 2012 Outperformance Plan [Member]
Capital Stock Authorized	125,000,000			125,000,000
Capital Stock Par Value	$ 0.001			$ 0.001
Common Stock, Shares Authorized	96,000,000			96,000,000		96,000,000
Common Stock, Par or Stated Value Per Share	$ 0.001			$ 0.001		$ 0.001
Preferred Stock, Shares Authorized	4,600,000			4,600,000		4,600,000
Preferred Stock, Par or Stated Value Per Share	$ 0.001			$ 0.001		$ 0.001
Common Stock, shares issued	59,372,672			59,372,672
Common Stock, shares outstanding	59,372,672			59,372,672
Series A cumulative redeemable preferred stock, shares issued	3,525,822			3,525,822		3,525,822
Preferred Stock, Shares Outstanding	3,525,822			3,525,822		3,525,822
Dividends, Preferred Stock, Cash				$ 34,019		$ 30,438
Preferred Stock, Dividends, Per Share, Cash Paid			$ 0.50781
Allocated Share-based Compensation Expense																							153	386	271	600
Equity Incentive Vested Percentage																									85.00%
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount														503,352	551,615	503,352	551,615	54,411	15,352	48,228
Stock Issued During Period, Shares, New Issues																									1,937,640
Weighted Average Number Of Shares, Restricted Stock	766,731	541,667		(699,876)	541,667	(1,383,388)																			1,787,872
Share Based Compensation Expense Remaining Weighted Average Vesting Period						0																			1,841
Share Price											$ 5.00		$ 9.00
Incentive Fee, Amount Paid										4,000
Incentive Earnings Percetage First Year						12.00%
Incentive Earnings Percetage Second Year						24.00%
Incentive Earnings Percetage Third Year						36.00%
Actual Incentive Earned Percentage										20.00%		100.00%
Shares Vesting Percentage								50.00%	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number														492,853		492,853
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period							15,849										551,615				115,000	345,000
Share Based Compensation Arrangement By Share Based Payment Award Share Price Description																											The amount of LTIP units actually earned by the executives under the 2012 Outperformance Plan can range from 20% of the maximum amount if the Company's common stock price equals a minimum hurdle of $5.00 per share (less any dividends paid during the performance period) to 100% of the maximum amount if the Company's common stock price equals or exceeds $9.00 per share (less any dividends paid during the performance period) on a valuation date during the four-year performance period. The executives will not earn any LTIP units under the 2012 Outperformance Plan to the extent that the Company's common stock price on each of the four valuation dates is less than the $5.00 per share minimum hurdle.
Unrealized Gain On Collateralized Mortagage Securities				107,774
Unamortized Fair Value Of Terminated Swaps				6,359
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Beginning Balance	503,352			503,352
Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Maximum Value																											4,000
Share Based Compensation Arrangement By Share Based Payment Award Shares Issued In Fair Value																											$ 845