ORGANIZATION AND ACCOUNTING POLICIES (Details Narrative) $ / shares in Units, ft² in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) ft² Properties shares	Dec. 31, 2019	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) ft² Properties $ / shares shares	Mar. 31, 2019 USD ($) $ / shares shares	Sep. 30, 2019 ft² Properties	Nov. 15, 2019 USD ($)
Real Estate Properties [Line Items]
Total square foot of property | ft²	23.0			23.0		22.3
Percentage of properties occupied				99.40%		98.90%
Weighted average lease maturity	7 years 4 months 24 days			7 years 4 months 24 days
Average base rent per square foot				6.28
Weighted average building age, term				9 years 4 months 24 days
Percentage of REIT securities of gross assets that management intends to reduce to				5.00%
Available for sale of securities, current	$ 99,000,000.0			$ 99,000,000.0
Percentage of marketable securities to undepreciated assets				4.60%
Total assets excluding accumulated depreciation	2,200,000,000			$ 2,200,000,000
Percentage that may be deducted from qualified REIT dividends for tax purposes		20.00%
Amortization of compensation costs included in general and administrative expenses	$ 114,000		$ 215,000	$ 270,000	$ 344,000
Weighted average fair value of stock option | $ / shares				$ 1.24	$ 1.17
Number of restricted stock shares granted | shares				0	25,000
Number of stock option exercised | shares				95,000	65,000
Weighted average exercise price per share | $ / shares				$ 10.69	$ 8.72
Total proceeds during period				$ 1,000,000.0	$ 567,000
Number of options forfeited, shares | shares				100,000	0
Weighted average exercise price per share, forfeited | $ / shares				$ 13.97
Stock option shares available for grant | shares	1,200,000			1,200,000
Option to purchase shares outstanding | shares				950,000
Aggregate intrinsic value of options	$ 473,000			$ 473,000
Reduced real estate taxes and reimbursement revenue amount			$ 925,000		$ 1,800,000
Unsecured term loan							$ 75,000,000.0
Term Loan [Member]
Real Estate Properties [Line Items]
Term loan interest rate							2.92%
London Interbank Offered Rate (LIBOR) [Member]
Real Estate Properties [Line Items]
Unsecured term loan							$ 75,000,000.0
Wholly Owned Properties [Member]
Real Estate Properties [Line Items]
Number of real estate properties owned | Properties	116			116		114