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TRADE RECEIVABLES & TRADE RECEIVABLES – RELATED PARTIES - Additional Information (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Trade receivables, net $ 1,482 $ 1,886
Receivables from related parties $ 3,598 3,644
Trade Accounts Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Trade receivables, net   $ 1,900
Trade receivable, threshold period past due 90 days 90 days