Financial Instruments - Schedule of Derivative Instruments at Gross Fair Value (Detail) - Interest Rate Swap [Member] - Significant Other Observable Inputs (Level 2) [Member] - Deferred Rent and Other Liabilities [Member] - USD ($) $ in Thousands	Jun. 24, 2016	Dec. 25, 2015
Derivatives, Fair Value [Line Items]
Derivative liabilities, Fair Value of Derivatives Designated as Hedge Instrument	$ 96	$ 23
Derivative liabilities, Fair Value of Derivatives Not Designated as Hedge Instrument	10	10
Derivative liabilities, Total Fair Value	$ 106	$ 33