Quarterly Information (Schedule Of Adjustments On Operating Income And Net Income) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 25, 2011		Sep. 25, 2011		Jun. 26, 2011		Mar. 27, 2011		Dec. 26, 2010		Sep. 26, 2010		Jun. 27, 2010		Mar. 28, 2010		Dec. 25, 2011	Dec. 26, 2010	Dec. 27, 2009
Operating income			$ (7,170)		$ 13,551		$ (9,031)				$ 14,201		$ 14,070		$ 5,285		$ 6,493	$ 43,371	$ 41,254
Net earnings (loss)	(19,054)	[1]	(48,662)	[2]	9,842	[3]	(8,695)	[4]	7,632	[5]	8,343	[6]	8,737	[7]	3,018	[8]	(66,569)	27,730	24,112
As Previously Reported [Member]
Operating income			(8,603)		12,610		(10,581)				13,062		14,116		5,621			42,648	41,580
Net earnings (loss)			(49,259)		9,520		(9,311)		7,744		7,081		9,040		3,506			27,371	26,142
Canada Adjustments [Member]
Operating income			797		430		823				719		(391)		(630)			(446)	(1,793)
Net earnings (loss)			597		322		616				557		(303)		(488)			(346)	(1,325)
Income Tax Adjustments [Member]
Net earnings (loss)											705							705	(705)
As Revised For Revision Adjustments [Member]
Operating income			(7,806)		13,040		(9,758)				13,781		13,725		4,991			42,202	39,787
Net earnings (loss)			(48,662)	[2]	9,842	[3]	(8,695)	[4]	7,632	[5]	8,343		8,737	[7]	3,018	[8]		27,730	24,112
Discontinued Operations Adjustments [Member]
Operating income			$ 636		$ 511		$ 727				$ 420		$ 345		$ 294			$ 1,169	$ 1,467

[1] Includes a $7.0 million restructuring charge (net of tax), a $3.2 million intangible impairment (net of tax), a $3.1 million goodwill impairment (net of tax), $1.0 million change in indefinite reversal assertion, a $0.9 million litigation settlement (net of tax), a $0.6 million income related to improper and fraudulent Canadian activities (net of tax), a $0.3 million reduction in valuation allowance, and $0.1 million in acquisition costs (net of tax).

[2] Includes a $48.0 million valuation allowance adjustment, a $16.6 million restructuring charge (net of tax), a $0.2 million expense related to improper and fraudulent Canadian activities (net of tax), and $2 thousand in acquisition costs (net of tax).

[3] Includes $2.0 million in acquisition costs (net of tax), a $1.1 million restructuring charge (net of tax), and a $38 thousand expense related to improper and fraudulent Canadian activities (net of tax).

[4] Includes a $1.1 million restructuring charge (net of tax) and a $0.2 million expense related to improper and fraudulent Canadian activities (net of tax).

[5] Includes a $4.2 million restructuring charge (net of tax). Also includes a $1.7 million tax charge, a $0.8 million selling, general and administrative charge (net of tax) related to adjustments to acquisition related liabilities pertaining to the period prior to the acquisition date, and a $0.2 million expense related to improper and fraudulent Canadian activities (net of tax).

[6] Includes a $4.3 million valuation allowance adjustment, a $0.6 million restructuring charge (net of tax), and a $0.2 million expense related to improper and fraudulent Canadian activities (net of tax).

[7] Includes a $0.9 million restructuring charge (net of tax) and a $0.4 million expense related to improper and fraudulent Canadian activities (net of tax).

[8] Includes a $0.5 million restructuring charge (net of tax) and a $0.4 million expense related to improper and fraudulent Canadian activities (net of tax).