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Consolidated Statements of Comprehensive Loss - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Net loss $ (3,415) $ (9,516)
Other comprehensive income (loss):    
Foreign currency translation adjustments 1,507 (2,614)
Defined benefit pension plans, net of tax benefit of $137 and $566, respectively (446) (2,411)
Derivative instruments qualifying as cash flow hedges, net of tax of $-0- (199) 0
Other comprehensive income (loss) 862 (5,025)
Comprehensive loss $ (2,553) $ (14,541)