Operating Property - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 26, 2015	Dec. 27, 2014	Dec. 28, 2013
Property, Plant and Equipment [Line Items]
Operating property under capital leases	$ 222,428,000	$ 188,311,000
Operating property under capital leases, net of accumulated depreciation and amortization	164,501,000	143,311,000
Capital leases	$ 49,491,000	$ 47,232,000	$ 49,138,000