Commitments and Contingencies - Tomoka Town Center - Additional Information (Detail)	3 Months Ended								12 Months Ended
	Dec. 31, 2015 USD ($) a	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) a	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2015 ft²
Loss Contingencies [Line Items]
Area of a real estate property	160								160			1,700,000
Revenue from sales of real estate property | $	$ 11,966,554	$ 1,748,398	$ 1,368,141	$ 859,801	$ 2,308,143	$ 8,781,759	$ 1,053,585	$ 1,349,247	$ 15,942,894	$ 13,492,734	$ 6,177,496
Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Area of a real estate property | a	160								160
NADG - First Parcel | Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Area of a real estate property | a	85.95								85.95
Revenue from sales of real estate property | $									$ 22,200,000