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Shareholders' Equity (Details 1) - 5.25-$7.00 [Member]
3 Months Ended
May 31, 2018
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Options Outstanding, Range of Exercise Price, Minimum $ 5.25
Options Outstanding, Range of Exercise Price, Maximum $ 7.00
Options Outstanding, Number | shares 1,032,000
Options Outstanding, Weighted Average Remaining Life 1 year 9 months
Options Outstanding, Weighted Average Exercise Price $ 5.55
Exercisable Options, Weighted Average Remaining Life 1 year 9 months
Exercisable Options, Number | shares 1,032,000
Exercisable Options, Weighted Average Exercise Price $ 5.55