Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

v3.5.0.2
Equity - Additional Information (Detail)
 3 Months Ended 9 Months Ended
Sep. 30, 2016
USD ($)
$ / shares
shares
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
$ / shares
shares
Sep. 30, 2015
USD ($)
Jul. 07, 2016
USD ($)
$ / shares
Jun. 30, 2016
shares
Apr. 08, 2016
shares
Dec. 31, 2015
$ / shares
shares
Equity [Line Items]                
Conversion of convertible securities into common stock     $ 1,604,150          
Convertible Preferred Stock, Terms of Conversion     P20D          
Common Stock, Par or Stated Value Per Share | $ / shares $ 0.01   $ 0.01         $ 0.01
Preferred Stock, Redemption Price Per Share | $ / shares 25   $ 25          
Potential shares which are antidilutive (in shares) | shares     28,244,214          
Dividend payable per share (in dollars per share) | $ / shares $ 0.0175   $ 0.0175          
Dividend accrued $ 1,289,617   $ 1,289,617          
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Maximum Amount         $ 50,000,000      
Common unit and common shareholders 3,867,061 $ 3,683,804 11,444,679 $ 6,099,075        
Preferred shareholders 1,240,811 2,279,907 2,263,410 13,116,232        
Total dividends 5,107,872 $ 5,963,711 13,708,089 $ 19,215,307        
Common Stock [Member]                
Equity [Line Items]                
Conversion of convertible securities into common stock     $ 13,970          
Issuance of common stock under Share Incentive Plan (in shares) | shares     283,304          
Additional Paid-in Capital [Member]                
Equity [Line Items]                
Conversion of convertible securities into common stock     $ 1,590,180          
Preferred Stock [Member]                
Equity [Line Items]                
Dividend accrued $ 1,162,442   $ 1,162,442          
Dividend disbursement date Oct. 15, 2016              
2015 Share Incentive Plan [Member]                
Equity [Line Items]                
Maximum number of shares authorized under Share Incentive Plan (in shares) | shares 1,000,000   1,000,000          
Issuance of common stock under Share Incentive Plan (in shares) | shares     283,304          
Value of stock issued Share Incentive Plan     $ 426,500          
Shares available for issuance under Share Incentive Plan (in shares) | shares 473,804   473,804          
2016 Share Incentive Plan [Member]                
Equity [Line Items]                
Maximum number of shares authorized under Share Incentive Plan (in shares) | shares 5,000,000   5,000,000          
Series B Convertible Preferred Stock [Member]                
Equity [Line Items]                
Preferred stock shares issued (in shares) | shares 1,871,244   1,871,244     729,119    
Preferred Stock Adjusted Conversion Price Per Share | $ / shares         $ 7.25      
Preferred Stock, Redemption Price Per Share | $ / shares         5.00      
Preferred Stock, Liquidation Preference Per Share | $ / shares         25.00      
Proceeds from Issuance of Convertible Preferred Stock     $ 23,400,000          
Series D Cumulative Convertible Preferred Stock [Member]                
Equity [Line Items]                
Preferred stock shares issued (in shares) | shares 1,600,000   1,600,000          
Convertible Preferred Stock Conversion Price | $ / shares     $ 2.12          
Preferred Stock, Liquidation Preference Per Share | $ / shares         $ 25.00      
Preferred Stock, Initial Liquidation Preference Per Share | $ / shares $ 2.1875   $ 2.1875          
Preferred Stock, Dividend Over Initial Rate, Percentage     2.00%          
Share Price | $ / shares $ 25.00   $ 25.00          
Ratio of Asset Coverage to Total Debt 2.0000   2.0000          
Proceeds from Issuance of Convertible Preferred Stock     $ 38,000,000          
Preferred Stock Redemption Discount     $ 12,000          
Series D Preferred Stock [Member]                
Equity [Line Items]                
Preferred stock shares issued (in shares) | shares 1,600,000   1,600,000         0
Warrant [Member]                
Equity [Line Items]                
Potential shares which are antidilutive (in shares) | shares     2,635,025          
Common Class B [Member] | Common Stock [Member]                
Equity [Line Items]                
Conversion of convertible securities into common stock     $ 5          
Common Class B [Member] | Additional Paid-in Capital [Member]                
Equity [Line Items]                
Conversion of convertible securities into common stock     $ 2,495          
Operating partnership's common units                
Equity [Line Items]                
Common units outstanding (in shares) | shares     4,055,292          
Convertible debt                
Equity [Line Items]                
Convertible debt $ 1,400,000   $ 1,400,000          
Line of Credit [Member]                
Equity [Line Items]                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares 6,000,000   6,000,000       6,000,000  
Minimum | Series D Cumulative Convertible Preferred Stock [Member]                
Equity [Line Items]                
Preferred Stock, Dividend Rate, Percentage     8.75%          
Maximum | Series D Cumulative Convertible Preferred Stock [Member]                
Equity [Line Items]                
Preferred Stock, Dividend Rate, Percentage     14.00%          
Equity Distribution Agreement | Series B Convertible Preferred Stock [Member]                
Equity [Line Items]                
Preferred stock shares issued (in shares) | shares 1,142,225   1,142,225