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Stockholders' Equity - Additional Information (Detail) (USD $)
 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended
Apr. 30, 2013
Aug. 01, 2012
May 01, 2012
Jun. 30, 2013
Dec. 31, 2012
Feb. 02, 2012
Executive and Employee [Member]
Feb. 28, 2012
Director [Member]
Jan. 31, 2013
Chief Financial Officer [Member]
Apr. 30, 2013
Common Stock [Member]
Mar. 31, 2013
Common Stock [Member]
Jun. 30, 2013
Common Stock [Member]
Jan. 25, 2013
Common Stock [Member]
Executive and Employee [Member]
Jan. 25, 2013
Common Stock [Member]
Director [Member]
Feb. 02, 2012
Common Stock [Member]
Director [Member]
Jun. 30, 2013
Operating Partnership Units [Member]
Jun. 30, 2013
Series A Cumulative Redeemable Preferred Stock [Member]
Class of Stock [Line Items]                                
Preferred stock, shares authorized       1,000,000                       27,650
Common stock, shares authorized       49,000,000 49,000,000                      
Common stock, par value       $ 0.01 $ 0.01                      
Conversion of units in operating partnership to shares of common stock, shares                 31,641 50,000 81,641          
Non-restricted shares issued           29,500           30,500   1,500    
Restricted shares issued             15,000 30,000         15,000      
Common stock, shares outstanding       10,156,927 9,999,786                      
Number of trading days       10 days                        
Redemption of units in Operating Partnership 10,000 6,000 6,000                          
Operating partnership stock redemption value       $ 32,900                     $ 69,080  
Operating Partnership units outstanding       2,881,198 2,972,839                      
Fair market value Operating Partnership       $ 12,700,000 $ 9,900,000