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Loss per Share (Details)
shares in Millions
6 Months Ended
Jun. 30, 2019
shares
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]  
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 0.2
Outstanding Warrants [Member]  
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]  
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 0.1
Preferred Stock and Options and Restricted Stock Awards [Member]  
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]  
Dilutive common shares excluded from the calculations of diluted loss per share (in shares) 0.1