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Equity and Financing Arrangements (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Common Stock [Abstract]        
Common stock issued during period 0 0 0 0
Dilutive Shares Calculation [Abstract]        
Dilutive securities     $ 0