REVENUE (Narrative) (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) customer	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($) customer
Concentration Risk [Line Items]
Contract liability balances related to performance obligations	$ 287		$ 287		$ 324
Recognized revenue related to contract liability balances	0	$ 0	37	$ 0
Contract assets	$ 0		$ 0		$ 0
Accounts Receivable \| Customer Concentration Risk
Concentration Risk [Line Items]
Number of customer \| customer			0		0
Concentration Risk, Percentage			10.00%		10.00%

Represents information about customer.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent.

+ References

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

+ References

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- Definition

Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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