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Common Stock Preferred Stock (Details) - $ / shares
Sep. 30, 2021
Jun. 23, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Preferred stock, par value   $ 0.01
Preferred Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Preferred Stock, Shares Authorized   50,000,000
Preferred Stock, Shares Issued 0