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SIGNIFICANT ACCOUNTING POLICIES - Components of inventory (Details) - USD ($)
Dec. 31, 2022
Dec. 31, 2021
Components of inventory    
Raw materials $ 3,506,000 $ 4,471,000
Work-in-process 1,205,000 345,000
Finished goods 7,750,000 4,468,000
Inventory in transit 1,291,000 1,624,000
Total inventory gross 13,752,000 10,908,000
Less: reserve (268,000) (152,000)
Total inventory net $ 13,484,000 $ 10,756,000