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