Pension Plan Contributions (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jul. 03, 2015	Dec. 31, 2014
Qualified Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions paid-to-date	$ 10,000	$ 10,000
Defined Benefit Plan, Expected Contributions	0
Supplemental Employee Retirement Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans
Contributions paid-to-date	267	$ 819
SERP, Expected contributions	$ 264