Employee Benefit Plans (Tables)

6 Months Ended

Jun. 27, 2020

Retirement Benefits [Abstract]

Net pension cost

Net pension cost for the three and six months ended June 27, 2020 and June 29, 2019 includes the following components (in thousands):

	Pension Benefits				Pension Benefits
	Three Months Ended				Six Months Ended
	June 27, 2020		June 29, 2019		June 27, 2020		June 29, 2019
Service cost	$	749	$	683	$	1,504	$	1,361
Interest cost	1,430		1,714		2,858		3,424
Expected return on plan assets	(2,032)		(1,817)		(4,071)		(3,636)
Amortization of prior service cost	8		9		16		18
Amortization of net loss	854		1,147		1,708		2,293
Net pension cost	$	1,009	$	1,736	$	2,015	$	3,460