Annual report pursuant to Section 13 and 15(d)

Related-Party Transactions (Details)

v2.4.0.6
Related-Party Transactions (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Related Party Transactions (Additional Textual) [Abstract]      
Due to the Adviser and Administrator $ 1,175,000 [1] $ 1,188,000 [1]  
Annual base management fee, in percentage of stockholders' equity, in excess of recorded value of preferred stock 2.00%    
Base management fee (1) 1,467,000 [1] 1,629,000 [1] 1,199,000 [1]
Irrevocable credit to base management fees     200,000
Pre-incentive quarterly fee FFO in percentage of common stockholders equity that will reward the advisor 1.75%    
Pre-incentive annual fee FFO in percentage of common stockholders equity that will reward the advisor 7.00%    
Amount to be paid to Adviser in percentage of pre-incentive fee condition one 100.00%    
Pre-incentive fee in percentage of common stockholders equity that awards adviser hundred percent of amount of pre-incentive fee, maximum percentage 2.1875%    
Pre-incentive fee in percentage of common stockholders' equity that awards the adviser 20% of the amount of the pre-incentive fee, minimum percentage 2.1875%    
Amount to be paid to Adviser in percentage of pre-incentive fee condition two 20.00%    
Incentive fee 3,569,000 [1] 3,398,000 [1] 3,480,000 [1]
Credit related to unconditional and irrevocable voluntary waiver issued by the advisor 2,221,000 [1] 2,113,000 [1] 158,000 [1]
Related-party transactions incentive fee, net 1,400,000 1,300,000 3,300,000
Administration fee 1,118,000 [1] 1,024,000 [1] 1,063,000 [1]
Dealer manager fee in percentage of gross proceeds of shares of Senior Common Stock sold 7.00%    
Sales commission fee in percentage of gross proceeds of shares of Senior Common Stock sold 3.00%    
Dealer Manager [Member]
      
Related-Party Transactions (Textual) [Abstract]      
Payments made to the Dealer Manager pursuant to Dealer Manager Agreement $ 173,000 $ 5,000 $ 0
[1] Refer to Note 2 "Related-Party Transactions"