Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Common Share - Antidilutive Securities (Details)

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Net Loss Per Common Share - Antidilutive Securities (Details) - shares
shares in Millions
9 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Antidilutive stock options and restricted stock units    
Net Loss Per Common Share    
Antidilutive securities excluded from diluted net loss per common share computations 1.2 0.7
Warrants    
Net Loss Per Common Share    
Antidilutive securities excluded from diluted net loss per common share computations 8.5 6.8