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DETAILS OF SELECTED BALANCE SHEET ACCOUNTS - Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Inventories:    
Finished goods and purchased products   $ 5,538 $ 5,346
Work in process   0 25
Raw materials   1,369 1,097
Total inventories $ 6,907 $ 6,468