Income Taxes (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013
Income Tax Disclosure [Abstract]
Income tax provision	$ 8,847,000	$ 10,364,000	$ 27,582,000	$ 26,053,000
Provision for income taxes (in percentage)	30.60%	41.80%	36.00%	37.30%
Income Tax Reconciliation, Tax Credits, Research				734,000
Possible reduction in liabilities for uncertain tax positions	$ 800,000		$ 800,000