Long-Term Debt - Additional Information (Detail) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 3 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended
Mar. 29, 2013
Feb. 14, 2013
Sep. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Property
Dec. 31, 2011
Jan. 31, 2013
Letter of Credit [Member]
Dec. 31, 2013
Hilton Resorts Corporation [Member]
Buildings
Jan. 31, 2013
Hilton Resorts Corporation [Member]
Buildings
Dec. 31, 2013
BOA Mortgage Note Payable [Member]
Mar. 08, 2013
BOA Mortgage Note Payable [Member]
Property
Dec. 31, 2013
UBS Mortgage Note Payable [Member]
Feb. 22, 2013
UBS Mortgage Note Payable [Member]
Feb. 27, 2012
Note Payable to Banks [Member]
Dec. 31, 2013
Credit Facility [Member]
Dec. 31, 2012
Credit Facility [Member]
Mar. 31, 2012
SunTrust Bank [Member]
Dec. 31, 2013
SunTrust Bank [Member]
Dec. 31, 2013
Line of Credit Amended [Member]
Feb. 27, 2012
Line of Credit New [Member]
Feb. 27, 2012
Line of Credit New [Member]
Minimum [Member]
Feb. 27, 2012
Line of Credit New [Member]
Maximum [Member]
Feb. 27, 2012
Bank of Montreal [Member]
Mar. 29, 2013
Line of Credit Facility Second Amendment [Member]
Mar. 29, 2013
Line of Credit Facility Second Amendment [Member]
Minimum [Member]
Mar. 29, 2013
Line of Credit Facility Second Amendment [Member]
Maximum [Member]
Proforma Debt Instrument [Line Items]                                                    
Line of credit facility maximum borrowing capacity                                   $ 25,000,000 $ 66,000,000 $ 46,000,000       $ 125,000,000    
Expiration date of line of credit Mar. 31, 2016                                 Sep. 27, 2014         Feb. 27, 2015      
Long-term debt LIBOR plus interest rate, reckoning period                           30 days                        
Interest rate description                                         LIBOR plus 175 basis points LIBOR plus 250 basis points     LIBOR plus 150 basis points LIBOR plus 225 basis points
LIBOR plus interest rate                                         1.75% 2.50%     1.50% 2.25%
Initial disbursement of credit facility                                   9,700,000                
Term loan       53,649,817 20,905,714 14,845,534                       5,600,000                
Term loan maturity date                                   Jul. 01, 2012                
Deferred loan costs write off         245,726                       245,726                  
Capacity available on existing credit facility   66,000,000 62,000,000                                              
Debt instrument decrease in variable interest rate                                               0.25%    
Percentage of weighted average interest rate on Credit Facility                             1.667% 1.966%                    
Amount of loan closed       63,227,032 29,126,849         23,100,000 23,100,000 7,300,000 7,300,000   32,827,032                      
Maturity period                   2023-04   2018-02                            
Interest rate on mortgage loan                   3.67%   3.655%                            
Number of office building               2 2                                  
Date of acquisition                       Jan. 31, 2013                            
Number of income properties         1           14                              
Credit facility capacity available       33,200,000                                            
Secured letter of credit with BMO             723,000                                      
Interest expense       1,624,064 536,017 655,275                                        
Interest paid       1,581,433 491,048 684,008                                        
Interest capitalized       8,172 0 28,733                                        
Amortization of loan costs       $ 202,500 $ 112,666 $ 67,704