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STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)				3 Months Ended		6 Months Ended
STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)	Feb. 28, 2019	Dec. 10, 2018	Jun. 07, 2018	Aug. 31, 2019	Aug. 31, 2018	Aug. 31, 2019	Aug. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount		$ 20,000,000		$ 0		$ 0
Share repurchase program period		12 months
Stock repurchase program, utilized amount	$ 10,000,000
Issuance of common stock under ESPP			1,750,000
Stock-based compensation expense				3,183,000	$ 2,680,000	5,726,000	$ 5,147,000
Unrecognized share-based compensation cost				36,400,000		$ 36,400,000
Unrecognized compensation cost, recognition period						3 years 3 months 18 days
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense				$ 200,000		$ 300,000