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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Net loss $ (1,596,000) $ (2,494,000)
Other comprehensive income (loss):    
Foreign currency translation adjustments, net of tax expense 2,589,000 982,000
Employee benefit related, net of tax expense 1,189,000 1,167,000
Other comprehensive income 3,778,000 2,149,000
Comprehensive income (loss) $ 2,182,000 $ (345,000)