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INCOME TAXES: - Earnings (loss) before income tax attributable to U.S. and non-U.S. continuing operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Income Tax Disclosure [Abstract]      
U.S. $ (2,552) $ 7,936 $ (6,952)
Non-U.S. 3,261 706 (13,328)
Income (loss) from continuing operations before income taxes $ 709 $ 8,642 $ (20,280)