Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 29, 2014	Jun. 30, 2013	Jun. 29, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Income tax provision	$ 9,698,000	$ 7,144,000	$ 18,735,000	$ 15,689,000
Provision for income taxes (in percentage)	39.70%	33.80%	39.20%	34.90%
Income Tax Reconciliation, Tax Credits, Research				734,000
Possible reduction in liabilities for uncertain tax positions	$ 2,800,000		$ 2,800,000