Quarterly report pursuant to Section 13 or 15(d)

Stockholder's Equity (Details)

v3.4.0.3
Stockholder's Equity (Details)
 3 Months Ended 12 Months Ended
Dec. 01, 2015
Jan. 27, 2015
USD ($)
$ / shares
shares
Mar. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Feb. 18, 2016
USD ($)
Class of Stock [Line Items]          
Preferred stock, authorized | shares     10,000,000    
Preferred stock, par value | $ / shares     $ 0.001    
Net offering proceeds   $ 54,200,000      
Series A Cumulative Redeemable Preferred Stock, value of stock issed     $ 56,250,000 $ 56,250,000  
Shares of common stock offered | shares     11,951,757 11,939,697  
Shelf Registration Statement Aggregate Offering Price         $ 600,000,000
Reinvestment of dividends paid to common stockholders     $ 159,313 $ 817,915  
Reverse stock split ratio 0.2        
Series A Cumulative Redeemable Preferred Stock [Member]          
Class of Stock [Line Items]          
Preferred stock, authorized | shares     10,000,000 10,000,000  
Preferred stock, par value | $ / shares     $ 0.001 $ 0.001  
Preferred stock, issued | shares   22,500 22,500 22,500  
Preferred Stock, Liquidation Preference (in dollars per share) | $ / shares     $ 2,500 $ 2,500  
Depositary Shares [Member]          
Class of Stock [Line Items]          
Annual dividend, per share | $ / shares   $ 1.84375      
Preferred Stock [Member] | Series A Cumulative Redeemable Preferred Stock [Member]          
Class of Stock [Line Items]          
Coupon rate   7.375% 7.375%    
Common Stock [Member]          
Class of Stock [Line Items]          
Shares sold in offering | shares       2,587,500  
Authorized amount of shares to be repurchased       $ 10,000,000  
Reinvestment of distributions to stockholders, shares | shares     12,060 28,510  
Reinvestment of dividends paid to common stockholders     $ 12 $ 29  
Underwritten Public Offering [Member] | Depositary Shares [Member]          
Class of Stock [Line Items]          
Shares sold in offering | shares   2,250,000      
Preferred Stock, Liquidation Preference (in dollars per share) | $ / shares   $ 25.00      
Dividend Reinvestment Plan [Member]          
Class of Stock [Line Items]          
Reinvestment of distributions to stockholders, shares | shares     12,060    
Reinvestment of dividends paid to common stockholders     $ 159,000    
Shelf registration after dividend reinvestment plan reduction     599,800,000    
CORRPrA [Member]          
Class of Stock [Line Items]          
Series A Cumulative Redeemable Preferred Stock, value of stock issed     $ 23