Quarterly report pursuant to Section 13 or 15(d)

Capital Stock Transactions - Warrants (Details)

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Capital Stock Transactions - Warrants (Details) - Warrant liability
6 Months Ended
Sep. 30, 2018
$ / shares
shares
Number of Warrants Outstanding  
Beginning (shares) | shares 4,536,857
Expired (shares) | shares (412,857)
Ending (shares) | shares 4,124,000
Weighted-Average Exercise Price  
Beginning (in dollars per share) | $ / shares $ 1.56
Expired (in dollars per share) | $ / shares 3.43
Ending (in dollars per share) | $ / shares $ 1.37