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Supplementary Financial Statements Information (Intangible Assets, Net) (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]    
Patent registration costs $ 2,195 $ 2,135
Accumulated amortization and impairment 1,593 1,538
Total intangible assets, net $ 602 $ 597