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Income Taxes (Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Balance at beginning of year $ 912 $ 823 $ 772
Addition based on tax positions related to current year 144 189 163
Addition based on tax positions related to prior years 668 182 0
Reduction based on tax positions related to prior years (32) (98) (12)
Currency translation adjustments 3   14
Currency translation adjustments   (28)  
Reduction for payments made (134) 0 0
Reduction for lapses of statute of limitations (206) (156) (114)
Balance before indemnification receivable 1,355 912 823
Receivable from Vishay Intertechnology for indemnification 0 0 (12)
Balance at end of year $ 1,355 $ 912 $ 811