Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Income Tax Disclosure [Abstract]
Income tax provision	$ 9,144	$ 10,780	$ 27,464	$ 28,053
Provision for income taxes (in percentage)	30.20%	41.70%	33.80%	51.20%
tax benefit (Expense)			$ 1,800
Possible reduction in liabilities for uncertain tax positions	$ 700		$ 700