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Share Based Payments - Additional Information (Details) - USD ($)
$ / shares in Units, shares in Millions
3 Months Ended 6 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2017
Aug. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Proceeds from Stock Options Exercised     $ 100,000 $ 100,000
Stock options granted, term     10 years  
Stock options vesting period     3 years  
Annual percentage over three years     33.33%  
Employee Service Share-based Compensation, Tax Benefit from Exercise of Stock Options     $ 0 $ 0.00
Stock options weighted average grant date fair value     $ 1.24 $ 1.13
Shares available for future grants 2.3   2.3  
Restricted stock awards requisite service period     3 years  
Grant date fair value of shares vested     $ 600,000 $ 1,000,000
Compensation expenses $ 707,000 $ 660,000 1,396,000 $ 1,516,000
Unrecognized compensation cost $ 1,800,000   $ 1,800,000  
Compensation cost of weighted average period     1 year 4 months  
Other Compensation Plans        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for future grants 0.3   0.3  
Two Thousand Sixteen Equity Compensation Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Shares available for future grants 2.0   2.0  
Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-Free Interest Rate:     1.70% 0.90%
Vesting dates of outstanding options     2017-09  
Expiration dates of options     2018-03  
Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Risk-Free Interest Rate:     1.90% 1.20%
Vesting dates of outstanding options     2020-07  
Expiration dates of options     2027-08