Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($)	8 Months Ended
	Sep. 06, 2015	Sep. 07, 2014	Dec. 28, 2014	[1]
Equity [Abstract]
Accumulated other comprehensive loss	$ (3,481,000)		$ (2,661,000)
Reclassification losses from accumulated other comprehensive loss to net income	$ 0	$ 0

[1] The balance sheet at December 28, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.