Benefit Plans (Tables)

6 Months Ended

Jun. 29, 2019

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit cost for the three and six months ended June 29, 2019 and June 30, 2018 were as follows: 

	For the Three Months Ended						For the Six Months Ended
(in thousands)	June 29, 2019			June 30, 2018			June 29, 2019			June 30, 2018
Components of net periodic benefit cost:
Service cost	$	514		$	533		$	1,014		$	1,066
Interest cost	813			501			1,597			1,002
Expected return on plan assets	(821		)	(540		)	(1,611		)	(1,080		)
Amortization of prior service	62			74			124			148
Net periodic benefit cost	$	568		$	568		$	1,124		$	1,136