Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Income Taxes [Line Items]
Deferred tax benefit and expense - discontinued operations			$ 1,342,000
Federal income tax rate	35.00%
Net unrecognized tax benefits	$ 1,899,000	$ 1,836,000
Accrued for estimated interest and penalties	727,000	744,000
Income taxes paid	$ 74,619,000	$ 98,506,000	$ 64,255,000