Retirement plans Assumptions (Tables)

12 Months Ended

Jan. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Assumptions Used [Table Text Block]

Weighted-average assumptions used to determine net cost and benefit obligations	2015		2014
End of year benefit obligation	4.05	%	3.35	%
Service cost discount rate	4.50	%	4.50	%
Expected return on plan assets	8.00	%	8.00	%
Rate of compensation increase	N/A		N/A