Share Based Payments Summary of Stock Options Outstanding and Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
Aug. 31, 2019
Options
Outstanding, beginning of period	2,738,087
Granted	604,500
Exercised	49,145
Expired	53,500
Outstanding, end of period	3,239,942
Exercisable, end of period	2,356,701
Price
Outstanding, beginning of period	$ 4.72
Granted	4.94
Exercised	2.23
Expired	6.89
Outstanding, end of period	4.77
Exercisable, end of period	$ 4.83
Outstanding, end of period	$ 3,690
Exercisable, end of period	$ 3,095
Outstanding, end of period	6 years 3 months 18 days
Exercisable, end of period	5 years 2 months 12 days

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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Period Type:	instant

- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.