INCOME TAX: - Income tax expense (benefit) attributable to earnings (loss) from continuing operations (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Current:
U.S. Federal	$ (28,060)	$ (33,715)	$ (39,534)
Non-U.S.	17	146	323
State	(1,071)	171	(16,092)
Total current income tax expense (benefit)	(29,114)	(33,398)	(55,303)
Deferred:
U.S. Federal	(1,205)	(5,103)	1,245
Non-U.S.	(44)	(1,006)	149
State	(169)	(769)	8,500
Total deferred income tax expense (benefit)	(1,418)	(6,878)	9,894
Total	$ (30,532)	$ (40,276)	$ (45,409)

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