Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v3.8.0.1
Income Taxes (Details Textual)
3 Months Ended 6 Months Ended
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2017
Aug. 31, 2016
Income Tax Disclosure [Abstract]        
Effective tax rate 20.40% 31.70% 18.30% 31.80%