Retirement Plans (Tables)

9 Months Ended

Sep. 25, 2016

Compensation and Retirement Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The following table summarizes the components of net periodic pension cost for the first three quarters of 2016 and 2015.

(Dollars in thousands)	Thirteen Weeks Ended				Thirty-nine Weeks Ended
	September 25, 2016		September 27, 2015		September 25, 2016		September 27, 2015
Service cost	$	—	$	11	$	—	$	33
Interest cost	304		307		912		923
Net amortization	84		134		252		401
Net periodic pension cost	$	388	$	452	$	1,164	$	1,357