Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v2.4.0.6
Consolidated Balance Sheets (Parenthetical) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Series B Cumulative Redeemable Preferred Stock
Dec. 31, 2011
Series B Cumulative Redeemable Preferred Stock
Dec. 31, 2012
Series C Cumulative Redeemable Preferred Stock
Dec. 31, 2011
Series C Cumulative Redeemable Preferred Stock
Dec. 31, 2012
Series D Cumulative Redemable Preferred Stock
Dec. 31, 2011
Series D Cumulative Redemable Preferred Stock
Preferred stock, par value $ 0.01 $ 0.01            
Preferred stock, shares authorized 100,000,000 100,000,000            
Preferred stock, shares issued 2,463,321 2,463,321 1,347,321 1,347,321 496,000 496,000 620,000 620,000
Preferred stock, shares outstanding 2,463,321 2,463,321 1,347,321 1,347,321 496,000 496,000 620,000 620,000
Preferred stock liquidation preference, per share $ 25.00 $ 25.00            
Common stock, par value $ 0.01 $ 0.01            
Common stock, shares authorized 500,000,000 500,000,000            
Common stock, shares issued 172,525,645 105,181,009            
Common stock, shares outstanding 172,525,645 105,181,009