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STOCKHOLDERS' EQUITY: - ESPP (Details) - USD ($)
$ in Millions
12 Months Ended 36 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2016
Share-based Activity - Other disclosures      
Number of shares available for issuance 5,300,000   5,300,000
ESPP      
Share-based Activity - Other disclosures      
Number of shares available for issuance 800,000   800,000
Shares purchased by the employees     125,698
Share-based compensation expense $ 0.2 $ 0.1