RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	$ (19)	$ 1,725	$ 3,430
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	100
Employee Severance | Restructuring Activity 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments			2,300
Restructuring reserve			200
Facility Closing | Restructuring Activity 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments	7,300
Restructuring reserve	$ 3,000
Facility Closing | Restructuring Activity 2021
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments		1,000
United States and Europe | Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments		$ 1,700
Asia-Pacific ("APAC") | Employee Severance | Restructuring Activity 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments			600
United States | Employee Severance | Restructuring Activity 2020
Restructuring Cost and Reserve [Line Items]
Restructuring charges and adjustments			$ 1,700