RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: - Gains, Losses and Other Items (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Gains, Losses and Other Items
Restructuring plan charges and adjustments	$ 6,740	$ 11,632	$ 19,784
Other restructuring charges	2,125	381	1,976
Write-off of accumulated foreign currency translation in Brazil	1,315
Gain on disposition of assets	(2,986)
Acquisition-related costs	1,365		820
Other	(186)	119	20
Gains, losses and other items, net	$ 8,373	$ 12,132	$ 22,600