Employee Postretirement Benefits Employee Postretirement Benefits (Tables)

6 Months Ended

Jul. 31, 2017

Retirement Benefits [Abstract]

Components of net periodic benefit cost for postretirement plan

The components of the net periodic benefit cost for postretirement benefits are as follows:

	Three Months Ended						Six Months Ended
	July 31, 2017			July 31, 2016			July 31, 2017			July 31, 2016
Service cost	$	21		$	20		$	43		$	40
Interest cost	82			83			164			166
Amortization of actuarial losses	30			37			60			74
Amortization of unrecognized gains in prior service cost	(40		)	(40		)	(80		)	(80		)
Net periodic benefit cost	$	93		$	100		$	187		$	200

Postretirement benefit cost components are reclassified in their entirety from accumulated other comprehensive loss to net periodic benefit cost.  Net periodic benefit costs are reported in net income as “Cost of sales” or “Selling, general, and administrative expenses” in a manner consistent with the classification of direct labor and personnel costs of the eligible employees.