STOCKHOLDERS' EQUITY: Summary of Options (Details)	12 Months Ended
	Mar. 31, 2022 $ / shares shares
Stock options outstanding and exercisable by exercise price range
Options outstanding (in shares) | shares	730,004
Options outstanding - Weighted-average remaining contractual life	2 years 2 months 12 days
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 16.28
Options exercisable (in shares) | shares	699,260
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 16.96
Range of exercise price per share from $0 to $9.99
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	0
Exercise price per share, high end of range (in dollars per share)	$ 9.99
Options outstanding (in shares) | shares	81,495
Options outstanding - Weighted-average remaining contractual life	5 years 7 months 6 days
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 0.99
Options exercisable (in shares) | shares	50,751
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 1.06
Range of exercise price per share from $10.00 to $19.99
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	10.00
Exercise price per share, high end of range (in dollars per share)	$ 19.99
Options outstanding (in shares) | shares	346,807
Options outstanding - Weighted-average remaining contractual life	1 year 8 months 12 days
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 15.50
Options exercisable (in shares) | shares	346,807
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 15.50
Range of exercise price per share from $20.00 to $24.99
Stock options outstanding and exercisable by exercise price range
Exercise price per share, low end of range (in dollars per share)	20.00
Exercise price per share, high end of range (in dollars per share)	$ 24.99
Options outstanding (in shares) | shares	301,702
Options outstanding - Weighted-average remaining contractual life	1 year 9 months 18 days
Options outstanding - Weighted-average exercise price per share (in dollars per share)	$ 21.31
Options exercisable (in shares) | shares	301,702
Options exercisable - Weighted-average exercise price per share (in dollars per share)	$ 21.31