Accrued and Other Liabilities - Additional Information (Detail) ft² in Millions	1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Jul. 31, 2012 USD ($)	Sep. 30, 2016 USD ($) a	Jun. 30, 2016 USD ($)	Sep. 30, 2016 USD ($) a	Dec. 31, 2015 USD ($) a	Sep. 30, 2016 ft²	Sep. 30, 2016 USD ($)	Dec. 31, 2014 USD ($)	Apr. 22, 2014 USD ($)
Accrued Liabilities [Line Items]
Lease, base rent	$ 250,000
Annual rate adjustment percentage	1.75%
Investments agreed under lease arrangement	$ 200,000
Description of additional rent payable				Company will pay additional rent to the City equal to 5.0% of gross revenues exceeding $5,500,000 and 7.0% of gross revenues exceeding $6,500,000
Additional rent percentage exceeding $5,500,000 gross revenue	5.00%
Additional rent percentage on exceeding $6,500,000 gross revenue	7.00%
Gross revenue value for additional rent under lease amendment lower limit	$ 5,500,000
Gross revenue value for additional rent under lease amendment upper limit	6,500,000
Rent deferred, no longer due	$ 3,000,000						$ 1,400,000
Lease term expiration year	2022
Tenant improvement credits					$ 812,493		569,151
Environmental reserve accrued								$ 110,000
Additional environmental reserve accrued				$ 500,000
Environmental remediation cost				$ 148,000
Costs affiliated with wetlands mitigation permits					$ 187,500
Payment of regulatory penalty		$ 187,500
Area of a real estate property		1,581		1,581	148.35	1.5
Restoration cost accrual					$ 2,405,635		1,581,377
Definitive Sales Contracts [Member]
Accrued Liabilities [Line Items]
Costs affiliated with wetlands mitigation permits				$ 0
Area of a real estate property | a					148.35
Restoration cost accrual							1,100,000
Estimated restoration costs			$ 2,000,000	2,000,000
Increase in accrual of restoration Costs		$ 300,000	$ 300,000
Funded on estimated costs				905,000
Payments of restoration costs		$ 905,000
Lowes
Accrued Liabilities [Line Items]
Tenant improvement credits							551,000		$ 651,000
Tenant improvements							$ 100,000
Minimum [Member]
Accrued Liabilities [Line Items]
Base rent payments per year	$ 250,000
Estimated additional environmental remediation costs				500,000
Minimum [Member] | Definitive Sales Contracts [Member]
Accrued Liabilities [Line Items]
Restoration cost accrual					$ 1,700,000
Maximum [Member]
Accrued Liabilities [Line Items]
Base rent payments per year	$ 500,000
Estimated additional environmental remediation costs				$ 1,000,000