Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v3.10.0.1
Income Taxes (Details Textual)
3 Months Ended 6 Months Ended
Aug. 31, 2018
Aug. 31, 2017
Aug. 31, 2018
Aug. 31, 2017
Income Tax Disclosure [Abstract]        
Effective tax rate 15.70% 20.50% 16.30% 18.20%