STOCKHOLDERS' EQUITY: Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares
Stock Option Activity - Number of Shares
Outstanding at beginning of the period (in shares) | shares	1,374,430
Options, grants in period (in shares) | shares	162,481
Exercised (in shares) | shares	(177,459)
Forfeited or cancelled (in shares) | shares	(8,794)
Outstanding at end of the period (in shares) | shares	1,350,658
Weighted-average exercise price per share
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 14.81
Grants in period (in dollars per share) | $ / shares	1.64
Exercised (in dollars per share) | $ / shares	6.13
Forfeited or cancelled (in dollars per share) | $ / shares	4.82
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 14.43
Weighted average remaining contractual term	3 years 7 months 6 days
Exercised | $	$ 6,666
Outstanding at the end of the period | $	$ 24,972
Exercisable at the end of the period (in shares) | shares	1,262,493
Exercisable at the end of the period (in dollars per share) | $ / shares	$ 15.32
Exercisable at the end of the period	3 years 3 months 18 days
Exercisable at the end of the period | $	$ 22,226