SIGNIFICANT CONCENTRATIONS OF CREDIT RISK (Details Narrative) $ in Millions	12 Months Ended
	Sep. 30, 2019 USD ($) ft²	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Oct. 10, 2019 ft²
Concentration Risk [Line Items]
Total property (in square feet)	22,300,000
Weighted average lease maturity	7.6 years
Subsequent Event [Member]
Concentration Risk [Line Items]
Purchase of industrial building				616,000
Total leasable square feet				22,900,000
Total square feet for Amazon.com Services, Inc.				1,400,000
Rent and reimbursement revenues				7.00%
FDX and Subsidiaries [Member] | Rental and Reimbursement Revenue [Member]
Concentration Risk [Line Items]
Rental and reimbursement revenue, percentage	60.00%	58.00%	59.00%
Rental and reimbursement revenue | $	$ 94.9	$ 80.7	$ 68.2
Description of total rentable space leased	No other tenant accounted for 5% or more of our total Rental and Reimbursement revenue
FDX [Member] | Rental and Reimbursement Revenue [Member]
Concentration Risk [Line Items]
Rental and reimbursement revenue, percentage	5.00%	7.00%	7.00%
FDX Subsidiaries [Member] | Rental and Reimbursement Revenue [Member]
Concentration Risk [Line Items]
Rental and reimbursement revenue, percentage	55.00%	51.00%	52.00%
FedEx Corporation (FDX) [Member]
Concentration Risk [Line Items]
Total property (in square feet)	10,400,000
Concentration risk based on square feet, percentage	47.00%
FDX Subsidiaries [Member]
Concentration Risk [Line Items]
Rental and reimbursement revenue, percentage	5.00%
FDX and Subsidiaries [Member]
Concentration Risk [Line Items]
Concentration risk based on square feet, percentage	5.00%
Rental and reimbursement revenue, percentage	42.00%
FDX [Member]
Concentration Risk [Line Items]
Weighted average lease maturity	8.7 years