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Stockholders' Equity Issuance Of Preferred Shares (Details)
Mar. 19, 2020
$ / shares
shares
Series C Preferred Stock [Member]  
Class of Stock [Line Items]  
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right 0.001
Preferred Stock, Par or Stated Value Per Share | $ / shares $ 1.00
Dividend Declared [Member]  
Class of Stock [Line Items]  
Class of Warrant or Right, Outstanding 1