XML 61 R50.htm IDEA: XBRL DOCUMENT v3.3.1.900
Stock Option Plan and Stock Based Compensation - Additional Information (Detail) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2015
Nov. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unissued common stock reserved 638,693   638,693  
Stock option award maximum term     10 years  
Share based compensation arrangements by share based payment award vesting period maximum     5 years  
Unrecognized compensation cost related to unvested stock options granted $ 0.1   $ 0.1  
Remaining unrecognized compensation cost related to unvested restricted stock 2.0   $ 2.0  
Weighted average remaining requisite service period of the unvested restricted stock awards     1 year 10 months 24 days  
Unvested Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average remaining requisite service period of the unvested stock options     1 year 9 months 18 days  
Selling, General and Administrative [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Compensation expense related share based compensation before tax 0.3 $ 0.3 $ 1.0 $ 1.0
Compensation expense related share based compensation net of tax $ 0.2 $ 0.2 $ 0.6 $ 0.6