Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details Textual)

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Stockholders' Equity (Details Textual) (USD $)
 1 Months Ended 3 Months Ended
Mar. 31, 2011
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Stockholders Equity (Textual) [Abstract]        
Common stock, shares issued   11,396,448   11,396,448
Common stock, par value   $ 0.001   $ 0.001
Senior common stock ongoing offering, gross proceeds   $ 6,484,000 $ 234,000  
Stockholders' Equity (Additional Textual) [Abstract]        
Maximum aggregate sales price of shares to be issued under open market sale agreement   25,000,000    
Gross proceeds under ATM program   5,600,000    
Number of shares sold under open market sale agreement   629,794    
Net proceeds of shares sold under open market sale agreement   11,700,000    
Maximum remaining capacity to sell common stock under open market sale agreement   13,300,000    
Shares intended to be offered pursuant to primary offering 3,000,000      
Shares intended to be offered pursuant to senior common distribution reinvestment plan 500,000      
Senior Common Stock [Member]
        
Stockholders Equity (Textual) [Abstract]        
Common stock, shares issued 3,500,000      
Common stock, par value 0.001      
Common stock shares issued, selling price 15.00      
Shares of senior common stock sold in ongoing offering   157,662    
Senior common stock ongoing offering, gross proceeds   $ 2,400,000    
Shares of senior common stock issued   2,697