EARNINGS PER SHARE AND STOCKHOLDERS' EQUITY: Anti-dilutive shares (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	97	156	89	345
Stock Options And Warrants And Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and Warrants Exercise Price	$ 32.85		$ 32.85
Minimum | Stock Options And Warrants And Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and Warrants Exercise Price		$ 32.85		$ 20.27
Maximum | Stock Options And Warrants And Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and Warrants Exercise Price		$ 32.85		$ 32.85