Real Estate Held for Investment (Detail) (USD $)	9 Months Ended			0 Months Ended	12 Months Ended			0 Months Ended	12 Months Ended	9 Months Ended
	Sep. 30, 2012	May 14, 2012 Family Dollar McDonough GA Leases, Acquired-in-Place [Member]	May 14, 2012 Family Dollar McDonough GA Above Market Leases [Member]	May 14, 2012 Family Dollar McDonough GA	May 14, 2013 Family Dollar McDonough GA	Jul. 25, 2012 Coliseum Health Macon, GA Leases, Acquired-in-Place [Member]	Jul. 25, 2012 Coliseum Health Macon, GA Above Market Leases [Member]	Jul. 25, 2012 Coliseum Health Macon, GA	Jul. 25, 2013 Coliseum Health Macon, GA	Sep. 30, 2012 Leases, Acquired-in-Place [Member]	Sep. 30, 2011 Leases, Acquired-in-Place [Member]	Sep. 30, 2012 Above Market Leases [Member]	Sep. 30, 2011 Above Market Leases [Member]
Business Acquisition, Effective Date of Acquisition				May 14, 2012				Jul. 25, 2012
Business Acquisition, Name of Acquired Entity				Family Dollar store in McDonough, Georgia				Coliseum Health urgent care clinic in Macon, Georgia
Business Acquisition, Cost of Acquired Entity, Cash Paid				$ 1,640,500				$ 967,500
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets		236,463	94,487	330,950		125,082	190,902	315,984
Business Acquisition, Cost of Acquired Entity, Transaction Costs				31,630				27,240
Average Lease Term				10.4				11.7
Real Estate Revenue, Net					136,168				79,625
Business Acquisition, Percentage of Voting Interests Acquired								50.00%
Amortization of Acquired Intangible Assets										9,415	0	5,775	0
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	129 months
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months										$ 33,605		$ 25,507