Note 4. Income Tax (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 23, 2012	Sep. 25, 2011	Sep. 23, 2012	Sep. 25, 2011
Income Tax Expense (Benefit)	$ 3,406,000	$ 847,000	$ 10,223,000	$ 6,001,000
Valuation Allowance, Deferred Tax Asset, Change in Amount	3,400,000	3,600,000
Other Noncash Income Tax Expense	4,000,000	6,000,000
Intraperiod Allocation Items in Other Comprehensive Income [Member]
Income Tax Expense (Benefit)		(732,000)
Interest Rate Swap Termination [Member]
Income Tax Expense (Benefit)		(2,000,000)
Impact from "Naked Credit" [Member]
Deferred Income Tax Expense (Benefit)			$ 14,000,000