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Shareholders' Equity (Intrinsic Value of Stock Options) (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stockholders' Equity Note [Abstract]    
Aggregate intrinsic value of options outstanding $ 4,589 $ 593
Aggregate intrinsic value of options exercisable 2,263 593
Total intrinsic value of options exercised $ 240 $ 28