Annual report pursuant to Section 13 and 15(d)

Capital Stock Transactions - Warrants (Details)

v3.19.1
Capital Stock Transactions - Warrants (Details) - Warrant liability
12 Months Ended
Mar. 31, 2019
$ / shares
shares
Number of Warrants Outstanding  
Outstanding, beginning balance (in shares) | shares 4,536,857
Issued (in shares) | shares 0
Exercised (in shares) | shares (484,900)
Canceled/Expired (in shares) | shares (412,857)
Outstanding, ending balance (in shares) | shares 3,639,100
Weighted-Average Exercise Price  
Outstanding, beginning balance (in dollars per share) | $ / shares $ 1.56
Issued (in dollars per share) | $ / shares 0.00
Exercised (in dollars per share) | $ / shares 1.36
Canceled/Expired (in dollars per share) | $ / shares 3.43
Outstanding, ending balance (in dollars per share) | $ / shares $ 1.37