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LEASES - Future minimum lease payments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Future total rentals on our non-cancellable operating leases under the previous lease standard
Aggregate			$ 223,000
2019			55,000
2020			54,000
2021			52,000
2022			52,000
2023			$ 10,000
Initial lease term (in months)		36 months
2020	$ 235,500
2021	235,500
2022	58,875
Total received leases	529,875
Rental income	147,000
ASU No. 2016-02, Leases (Topic 842)
Maturity of lease liabilities
2020	52,000
2021	52,000
2022	52,000
2023	10,000
Total lease payments	166,000
Less: Amounts representing interest	(9,000)
Lease liabilities	$ 157,000