RELATED PARTY TRANSACTIONS (Details) (USD $)		0 Months Ended		9 Months Ended				9 Months Ended			27 Months Ended		9 Months Ended				9 Months Ended
	Sep. 30, 2013 Northridge land sale item	Mar. 20, 2013 Peachtree Parkway acre	Feb. 07, 2013 Peachtree Parkway acre	Sep. 30, 2013 Minimum item	Sep. 30, 2013 Peachtree Parkway	Oct. 09, 2012 Peachtree Parkway acre	Sep. 30, 2013 North Springs item	Sep. 30, 2013 Roberts Companies Contract for development and construction of real estate assets Apartment communities item	Sep. 30, 2013 Roberts Companies Office leases Northridge Office Building	Sep. 30, 2012 Roberts Companies Office leases Northridge Office Building	Sep. 30, 2013 Roberts Properties Northridge land sale	Jul. 02, 2013 Roberts Properties Northridge land sale acre	Sep. 30, 2013 Roberts Properties Contract for development and construction of real estate assets Highway 20	Sep. 30, 2013 Roberts Properties Other Payments	Sep. 30, 2012 Roberts Properties Other Payments	Jan. 02, 2013 Roberts Properties Office leases Northridge Office Building sqft	Sep. 30, 2013 Roberts Construction Construction Contracts	Sep. 30, 2012 Roberts Construction Construction Contracts	Sep. 30, 2012 Roberts Construction Construction Contracts Bradley Park	Sep. 30, 2013 Roberts Construction Construction Contracts Northridge property	Sep. 30, 2012 Roberts Construction Construction Contracts Northridge property	Sep. 30, 2012 Roberts Construction Construction Contracts Peachtree Parkway	Sep. 30, 2012 Roberts Construction Construction Contracts North Springs	Sep. 30, 2012 Roberts Construction Construction Contracts Highway 20	Sep. 30, 2013 Roberts Construction Other Payments	Sep. 30, 2012 Roberts Construction Other Payments	Jan. 02, 2013 Roberts Construction Office leases Northridge Office Building sqft
Related party transactions
Number of disinterested directors required for authorizing all conflicting interest transactions				2
Number of properties sold or agreed to be sold								20
Number of units	220						356	4,648
Sales price						$ 7,590,000		$ 431,701,143
Design and Development Agreements, Total contract amount													1,050,000
Remaining contractual commitment													425,000
Additions to cost for overhead as percentage of cost					5.00%												5.00%									5.00%
Additions to cost for profit as percentage of cost					5.00%												5.00%									5.00%
Amounts incurred for labor and materials costs																	999	138,761	922	999	135,805	1,126	286	622
Amounts incurred for 5% overhead and 5% profit																	100	13,877	92	100	13,581	113	29	62		14,319
Costs incurred for consulting services														188,292	123,147
Reimbursement of cost											383,373			6,765	5,849										176,677	30,351
Payments for labor and material costs																										143,194
Rentable area (in square feet)																4,431											1,920
Lease term									1 year
Rental rate per rentable square foot									17.00
Total rental income									80,975	83,357
Area of land sold (in acres)		1.5	20.6			20.6						11
Earnest money deposit												25,000
Payment required to release a restrictive covenant on the property			500,000
Sale proceeds used to repay loan			7,000,200
Gain on disposal of assets		$ 39,741	$ 1,214,192