Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended
	May 16, 2011	Mar. 31, 2013	Mar. 25, 2012	Dec. 30, 2012
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net		$ 72,196,000		$ 74,950,000	[1]
Amortization expense		2,300,000	2,700,000
Settlement date of acquisition	May 16, 2011
Business acquisition, purchase price	78,700,000
Cash acquired on acquisition	1,900,000
Assumption of debt	4,200,000
Cash payment to escrow	17,500,000
Additional purchase price contingent on performance of acquired businesses	6,300,000
Acquisition costs		$ 161,000	$ 14,000

[1] Derived from the Company’s audited Consolidated Financial Statements at December 30, 2012.