Employee Benefit Plans (Details) $ in Thousands	3 Months Ended
	Apr. 30, 2016 USD ($)
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount Rate	1.20%
Expected Long-term Rate of Return	2.80%
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Interest cost on projected benefit obligation	$ 229
Expected investment return on plan assets	(384)
Amortization of actuarial loss	620
Settlement loss	1,116
Net periodic pension cost	$ 1,581