Commitments and Contingencies - Other Matters - Additional Information (Detail)	3 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 a	Dec. 31, 2015 ft²
Loss Contingencies [Line Items]
Area of real estate property			160	1,700,000
Costs affiliated with wetlands mitigation permits		$ 187,500
Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Area of real estate property | a			160
Estimated cost of construction, current year	$ 1,700,000	1,700,000
Cost of infrastructure improvements		0
Costs affiliated with wetlands mitigation permits		0
Mitigation Activities [Member] | Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Area of real estate property | a			60
Environmental Restoration Costs [Member]
Loss Contingencies [Line Items]
Accrued Penalties	187,500
Minimum [Member] | Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Cost of the contract	1,700,000	1,700,000
Maximum [Member] | Definitive Sales Contracts [Member]
Loss Contingencies [Line Items]
Cost of the contract	$ 1,900,000	$ 1,900,000