Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

v2.4.1.9
CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Preferred stock, par value 0.01us-gaap_PreferredStockParOrStatedValuePerShare 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 100,000,000us-gaap_PreferredStockSharesAuthorized 100,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 2,463,321us-gaap_PreferredStockSharesIssued 2,463,321us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 2,463,321us-gaap_PreferredStockSharesOutstanding 2,463,321us-gaap_PreferredStockSharesOutstanding
Preferred stock liquidation preference, per share 25.00us-gaap_PreferredStockLiquidationPreference 25.00us-gaap_PreferredStockLiquidationPreference
Common stock, par value 0.01us-gaap_CommonStockParOrStatedValuePerShare 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 1,000,000,000us-gaap_CommonStockSharesAuthorized 1,000,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 66,428,508us-gaap_CommonStockSharesIssued 58,575,583us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 66,428,508us-gaap_CommonStockSharesOutstanding 58,575,583us-gaap_CommonStockSharesOutstanding
Series B Cumulative Redeemable Preferred Stock [Member]    
Preferred stock, dividend rate 9.75%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember 		9.75%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Preferred stock, shares issued 1,347,321us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember 		 
Preferred stock, shares outstanding 1,347,321us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember 		 
Series C Cumulative Redeemable Preferred Stock [Member]    
Preferred stock, dividend rate 8.05%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember 		8.05%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Preferred stock, shares issued 496,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember 		 
Preferred stock, shares outstanding 496,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember 		 
Series D Cumulative Redemable Preferred [Member]    
Preferred stock, dividend rate 8.375%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember 		8.375%us-gaap_PreferredStockDividendRatePercentage
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Preferred stock, shares issued 620,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember 		 
Preferred stock, shares outstanding 620,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember