RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: Gains, losses and other items (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring plan charges and adjustments	$ 1,725	$ 3,430	$ 7,745
Other	990	663	0
Total gains, losses and other items, net	2,715	5,001	19,933
Early contract terminations	$ 0	$ 908	$ 12,188

Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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