COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Changes in the carrying amount of the total product warranty liability
Balance, beginning of period	$ 163	$ 226
Reduction of warranty reserve	(82)	(4)
Warranty claims		(19)
Other adjustments	(19)	11
Balance, end of period	62	214
Allowance for Doubtful Accounts Receivable [Roll Forward]
Balance at beginning of period	127	190
Bad debt expense	114	2
Write-offs	(47)	(14)
Other adjustments	(33)
Balance at end of period	161	$ 178
Liquidated Damages
Reserve for liquidated damages	$ 0		$ 0
Minimum
Warranty Liability
Term of warranty	1 year
Maximum
Warranty Liability
Term of warranty	5 years

Amount of direct other adjustments of accounts receivable charged against the allowance.

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Represents the term of warranty.

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Amount of other increase (decrease) in the standard and extended product warranty liability.

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Amount of increase (decrease) in allowance for credit loss on accounts receivable.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of direct write-downs of accounts receivable charged against the allowance.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Recorded amount of the accrual for a material component of a product liability contingency.

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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.

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of decrease in the standard and extended product warranty accrual from payments made in cash or in kind to satisfy claims under the terms of the standard and extended product warranty.

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Amount of increase (decrease) in the standard and extended product warranty liability.

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