LEASES - NARRATIVE (Details)	1 Months Ended	3 Months Ended		6 Months Ended
	Mar. 31, 2020 USD ($) a	Mar. 31, 2020 USD ($) a	Mar. 31, 2019 USD ($)	Mar. 31, 2020 USD ($) a	Mar. 31, 2019 USD ($)	Oct. 01, 2019 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 292,000	$ 292,000		$ 292,000
Present value of lease liabilities	$ 298,000	$ 298,000		$ 298,000
Operating lease, area of land | a	0.75	0.75		0.75
Proceeds from the sale of asset	$ 1,100,000			$ 1,100,000	$ 0
Gain on sale of asset		$ 1,336,000	$ 0	$ 1,336,000	$ 0
Gain from the reversal of the storage yard's lease liability in excess of the right-of-use asset		$ 236,000
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets						$ 2,589,000
Present value of lease liabilities						$ 2,589,000