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LOSS PER SHARE AND STOCKHOLDERS’ EQUITY: Anti-dilutive shares (Details) - $ / shares
shares in Thousands
3 Months Ended
Jun. 30, 2019
Jun. 30, 2018
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY [Abstract]    
Antidilutive securities excluded from computation of earnings per share, amount 431 119
Range of exercise prices for options (in dollars per share)   $ 32.85