Income Taxes - Additional Information (Detail) - USD ($)	9 Months Ended		12 Months Ended
	Sep. 24, 2016	Sep. 26, 2015	Dec. 31, 2016	Dec. 26, 2015
Income Taxes [Line Items]
Effective income tax rate	37.60%	37.90%		38.20%
Other current assets	$ 15,188,000			$ 11,604,000
Deferred income taxes and other noncurrent liabilities	$ 56,097,000			52,474,000
Scenario, Forecast
Income Taxes [Line Items]
Effective income tax rate			38.10%
Scenario Previously Reported | Adjustments for New Accounting Principle, Early Adoption
Income Taxes [Line Items]
Other current assets				6,552,000
Restatement Adjustment | Adjustments for New Accounting Principle, Early Adoption
Income Taxes [Line Items]
Deferred income taxes and other noncurrent liabilities				$ (6,552,000)