Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Deferred tax assets:
Lease Liabilities	$ 17,951	$ 15,567
Inventory	2,525	5,868
Stock-based compensation expense	5,568	5,818
Accrued expenses	3,171	3,232
Other	2,212	1,914
Total deferred tax assets	31,427	32,399
Valuation allowance	(2,022)	(1,866)
Total deferred tax assets net of valuation allowance	29,405	30,533
Deferred tax liabilities:
Property, plant and equipment	(88,947)	(78,232)
Right-of-use Assets	(15,695)	(14,203)
Amortization	(12,900)	(10,899)
Prepaid expenses	(4,528)	(2,209)
Total deferred tax liabilities	(122,070)	(105,543)
Net deferred tax liabilities	$ (92,665)	$ (75,010)