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Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of the combined activity under all of the stock option plans
  Number of
Options
Outstanding
   Weighted
Average
Exercise
Price
 
Outstanding at January 1, 2020   52,500   $27.51 
Cancelled   (1,000)   62.10 
Outstanding at June 30, 2020   51,500   $26.84