OTHER ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
OTHER ACCRUED LIABILITIES
Lease liability - short term	$ 604	$ 673
Product warranty	383	371
Sales return reserve	71	61
Other taxes	127	109
Other	108	93
Other accrued liabilities	$ 1,293	$ 1,307