Net Periodic Benefit Expense - Defined Benefit Pension Plans (Tables)

3 Months Ended

Mar. 30, 2019

Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]

Schedule of defined benefit pension plans, components of pension expense [Table Text Block]

The results of operations included the following net periodic benefit expense (income) recognized related to our defined-benefit pension plans.

	Three Months Ended
	March 30, 2019			March 31, 2018
Components of pension expense (income)
Service costs--increase in benefit obligation earned	$	45		$	100
Interest cost on projected benefit obligation	75			180
Expected return on plan assets	(23		)	(58		)
Amortization of net actuarial loss	44			182
Amortization of prior service cost	16			16
Net pension expense of defined benefit pension plans	$	157		$	420