Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details Textual)

v2.4.0.6
Income Taxes (Details Textual)
3 Months Ended 9 Months Ended
Nov. 30, 2012
Nov. 30, 2011
Nov. 30, 2012
Nov. 30, 2011
Income Tax Disclosure [Abstract]        
Effective tax rate 27.00% 37.40% 25.30% 24.60%