EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY: Anti-dilutive shares (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	1,308	39	324	263
Stock Options And Warrants And Restricted Stock Units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	2,200		2,500
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		$ 20.27		$ 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