Significant Accounting Policies (Narrative) (Detail) (USD $)					1 Months Ended
	Mar. 25, 2012 Entity	Dec. 25, 2011		Mar. 27, 2011 Entity	Apr. 30, 2012 Subsequent Event [Member] Location	Apr. 23, 2012 Subsequent Event [Member]
Noncontrolling Interest [Line Items]
Number of joint venture arrangements	2			2
Stockholders' equity attributable to noncontrolling interest	$ 9,895,000	$ 8,569,000	[1]
Net deferred tax liability	400,000
Number of restaurants acquired					56
Number of restaurants sold					6
Purchase price of restaurants, cash paid						$ 5,100,000

[1] The balance sheet at December 25, 2011 has been derived from the audited consolidated financial statements at that date, but does not include all information and footnotes required by accounting principles generally accepted in the United States for a complete set of financial statements.