Quarterly report pursuant to Section 13 or 15(d)

ACCOUNTS RECEIVABLE (Details)

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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2019
ACCOUNTS RECEIVABLE      
Trade receivables $ 13,750 $ 7,016  
Allowance for doubtful accounts (309) (500) $ (199)
Total accounts receivable $ 13,441 $ 6,516