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The components of accumulated other comprehensive loss consist of the following: (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Cumulative translation adjustments, beginning of year $ (5,997) $ (39,853)  
Cumulative translation adjustments, end of year (38,432) (5,997) $ (39,853)
Accumulated other comprehensive loss (38,432) (5,997) (39,853)
Accumulated Defined Benefit Plans Net Derivative Instruments [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Cumulative translation adjustments, beginning of year 52 136
Net derivative instrument gain (loss), net of tax (992) (52) (84)
Cumulative translation adjustments, end of year (992) 52
Accumulated other comprehensive loss (992) 52
Accumulated Foreign Currency Adjustment Attributable to Parent [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Cumulative translation adjustments, beginning of year (5,997) (39,905) (33,786)
Cumulative translation adjustments, end of year (37,440) (5,997) (39,905)
Translation adjustments (31,443) 33,908 (6,119)
Accumulated other comprehensive loss $ (37,440) $ (5,997) $ (39,905)