Quarterly report pursuant to Section 13 or 15(d)

ACCOUNTS RECEIVABLE (Details)

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ACCOUNTS RECEIVABLE (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
ACCOUNTS RECEIVABLE      
Trade receivables $ 37,738 $ 47,352  
Allowance for doubtful accounts (1,077) (665) $ (500)
Total accounts receivable $ 36,661 $ 46,687