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REVENUE RECOGNITION - Information about Receivables and Deferred Revenue from Contracts with Customers (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Accounts receivable $ 553 $ 174
Unbilled receivables 91  
Deferred revenue 730 $ 158
Long term deferred revenue $ 510