Retirement Plans (Tables)

3 Months Ended

Apr. 01, 2017

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Benefit Costs for Pension and Other Postretirement Benefits

The components of net periodic benefit (credits) costs for pension and other postretirement benefits, for Company sponsored plans, are provided below (in thousands):

	13-Weeks Ended
	Pension Benefits						Other Postretirement Benefits
	April 1, 2017			April 2, 2016			April 1, 2017			April 2, 2016
Components of Net periodic benefit (credits) costs
Service cost	$	506		$	966		$	10		$	9
Interest cost		10,138			9,817			72			74
Expected return on plan assets		(11,964	)		(12,221	)		—			—
Amortization of prior service cost		35			39			1			2
Amortization of net loss (gain)		1,051			1,860			(13	)		(18	)
Settlements		—			750			—			—
Net periodic benefit (credits) costs	$	(234	)	$	1,211		$	70		$	67