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LEASES - Components of lease expense (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Line Items]
Total rent expense charged to operations			$ 191,000
ASU No. 2016-02, Leases (Topic 842) | Selling, general and administrative expenses
Leases [Line Items]
Operating lease cost	$ 54,000	$ 52,000
Short-term lease cost	2,000	3,000
Total lease cost	$ 56,000	$ 55,000

X

- Definition

Represents Leases line item.

+ References

No definition available.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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- Definition

Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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