Income Taxes Income Tax Reconciliation, Narrative (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014 Rate	Sep. 28, 2013 Rate
Income Tax Disclosure [Abstract]
Effective income tax rate			40.30%	3.60%
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount				$ 795
Tax on Non-Vested Market-Based Stock Awards			117
Gain on life insurance proceeds	0	0	0	202	[1]
Federal tax credits			$ 76	$ 157

[1] The Company recognized a settlement gain of $202 from a company-owned insurance policy during the nine months ended September 28, 2013.