Significant Components of Company's Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Deferred tax assets:
Lease Liabilities	$ 15,567
Inventory	5,868	$ 1,356
Stock-based compensation expense	5,818	5,156
Accrued expenses	3,232	1,913
Other	1,914	2,478
Total deferred tax assets	32,399	10,903
Valuation allowance	(1,866)	(1,291)
Total deferred tax assets net of valuation allowance	30,533	9,612
Deferred tax liabilities:
Property, plant and equipment	(78,232)	(57,099)
Right-of-use Assets	(14,203)
Amortization	(10,899)	(733)
Prepaid expenses	(2,209)	(949)
Total deferred tax liabilities	(105,543)	(58,781)
Net deferred tax liabilities	$ (75,010)	$ (49,169)