Quarterly report pursuant to Section 13 or 15(d)

Related-Party Transactions - Additional Information (Detail)

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Related-Party Transactions - Additional Information (Detail) (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Related Party Transaction [Line Items]      
Due to Adviser and Administrator $ 1,160,000 [1]   $ 1,360,000 [1]
Annual base management fee, in percentage of stockholders' equity, in excess of recorded value of preferred stock 2.00%    
Base management fee 625,000 [1] 353,000 [1]  
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%    
Amount to be paid to Adviser in percentage of pre-incentive fee condition two 20.00%    
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%    
Incentive fee 1,240,000 [1] 931,000 [1]  
Credits related to unconditional and irrevocable voluntary waivers issued by the Adviser 1,205,000 [1] 585,000 [1]  
Related-party transactions incentive fee, net 40,000 300,000  
Administration fee 492,000 [1] 362,000 [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%    
Agreement termination date Aug. 31, 2014    
Fees paid 0 0  
Minimum [Member]
      
Related Party Transaction [Line Items]      
Percentage of the amount of the mortgage 0.50%    
Maximum [Member]
      
Related Party Transaction [Line Items]      
Percentage of the amount of the mortgage 1.00%    
Dealer Manager [Member]
      
Related Party Transaction [Line Items]      
Payments made to the Dealer Manager pursuant to Dealer Manager Agreement $ 40,000 $ 60,000  
Agreement termination date Mar. 28, 2015    
Agreement termination on senior common stock shares issued 3,000,000    
[1] Refer to Note 2 "Related-Party Transactions"