RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: Summary of restructuring activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges and adjustments	$ 233	$ 5,043	$ 1,890	$ 5,533
Restructuring Reserve, at the end of the period	5,000		5,000
Continuing operations
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period			10,283
Restructuring charges and adjustments			1,890
Payments			(6,653)
Restructuring Reserve, at the end of the period	5,520		5,520
Continuing operations | Associate-related reserves
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period			4,595
Restructuring charges and adjustments			1,970
Payments			(6,039)
Restructuring Reserve, at the end of the period	526		526
Continuing operations | Lease accruals
Restructuring Reserve [Roll Forward]
Restructuring Reserve, at the beginning of the period			5,688
Restructuring charges and adjustments			(80)
Payments			(614)
Restructuring Reserve, at the end of the period	$ 4,994		$ 4,994