Debt Obligations - Mortgage Payable (Details) - USD ($)							9 Months Ended
	May 31, 2016	May 11, 2016	May 06, 2016	Feb. 29, 2016	Feb. 01, 2016	Jan. 22, 2016	Jun. 30, 2016	Apr. 15, 2016	Feb. 09, 2016	Nov. 18, 2015	Nov. 10, 2015	Oct. 13, 2015	Sep. 30, 2015
Debt Obligations
Mortgage payable held for sale							$ 27,130,000						$ 19,248,000
Southridge Financing
Debt Obligations
Advances on construction loans							8,034,000
Factory at Garco Development
Debt Obligations
Advances on construction loans							6,808,000
Mortgages
Debt Obligations
Debt, face amount							153,273,000
Mortgages | Mortgages Maturing in February 2022 | La Grange, GA
Debt Obligations
Debt, face amount										$ 16,051,000
Interest Rate										4.36%
Mortgages | Mortgages Maturing in February 2026 | Katy, TX
Debt Obligations
Debt, face amount						$ 30,750,000
Interest Rate						4.44%
Interest only period						60 months
Mortgages | Mortgages Maturing in February 2026 | Macon, GA
Debt Obligations
Debt, face amount					$ 11,200,000
Interest Rate					4.39%
Interest only period					24 months
Mortgages | Mortgages Maturing in March 2026 | Southaven, MS
Debt Obligations
Debt, face amount	$ 12,934,000	$ 27,938,000	$ 26,400,000	$ 28,000,000
Interest Rate	4.28%	4.01%	3.61%	4.24%
Interest only period	36 months	24 months	23 months	60 months
Mortgages | Mortgages Maturing in March 2022 | Pensacola, FL
Debt Obligations
Debt, face amount												$ 3,194,000
Interest Rate												4.92%
Mortgages | Mortgages Maturing In July 2021 | Atlanta, GA
Debt Obligations
Debt, face amount											$ 5,000,000
Interest Rate											4.93%
Mortgages | Mortgages Maturing in August 2021 | Houston, TX
Debt Obligations
Debt, face amount								$ 2,650,000	$ 3,865,000
Interest Rate								5.29%	4.94%
Mortgages | Additional Mortgages Obtained
Debt Obligations
Debt, face amount							$ 14,709,000