Note 7 - Capital and Other Components of Equity (Tables)

6 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	September 30, 2020		March 31, 2020
	Number outstanding	Amount	Number outstanding	Amount
		$		$
Liability
May 2018 public offering warrants 2018 (i)	6,593,750	611	6,593,750	1,146
Series December 2017 U.S. public offering warrants 2017 (ii)	7,072,962	559	7,072,962	1,247
	13,666,712	1,170	13,666,712	2,393
Equity
Public offering warrants
Public offering Broker warrants May 2018(iii)	222,976	89	222,976	89
Series December 2017 US Broker warrants (iv)	259,121	161	259,121	161
Public offering warrants February 2017 (v)	1,723,934	631	1,723,934	631
	2,206,031	881	2,206,031	881