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Share-Based Compensation (Details) - Changes in the stock option plan - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Share-Based Compensation (Details) - Changes in the stock option plan [Line Items]    
Balance, Number of Shares Authorized 800 800
Balance, Number of Shares Available 800 800
Balance, Weighted Average Exercise Price (in Dollars per share)  
Balance, Number of Shares Authorized 800 800
Balance, Number of Shares Available 800 800