Retirement plans Components of net periodic benefit cost (Tables)

12 Months Ended

Jan. 31, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

Components of net periodic benefit cost	2015	2014
Service cost	$0	$0
Interest cost	266	299
Expected return on plan assets	(479)	(494)
Recognized actuarial loss	210	69
Net periodic benefit (income) cost	($3)	($126)