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2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES : Disaggregation of Revenue (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Product Information [Line Items]    
Revenues $ 5,803 $ 3,815
Paid Up Revenue Agreements [Member]    
Product Information [Line Items]    
Revenues 5,410 3,300
Recurring Revenue Agreements [Member]    
Product Information [Line Items]    
Revenues $ 393 $ 515