Immaterial Restatement of Previously Issued Financial Statements and Reclassification - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
Apr. 01, 2017	Mar. 26, 2016
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Decrease in accounts payable for repurchase of Class A Common Stock	$ 0	$ (3,000)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration