Income Taxes - Reconciliation of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 26, 2020	Dec. 28, 2019
Assets:
Inventories	$ 11,346	$ 9,545
Accounts receivable	16,452	10,695
Operating lease liability	9,352	7,273
Accrued expenses	3,550	1,974
Foreign tax credits	631	844
Total deferred tax assets	41,331	30,331
Valuation allowance	(1,256)	(844)
Net deferred tax assets	40,075	29,487
Liabilities:
Depreciation	10,586	10,296
Goodwill and intangible assets	12,419	11,742
Operating lease right of use asset	8,560	6,656
Other	(121)	416
Gross deferred tax liabilities	31,444	29,110
Net deferred tax assets	$ 8,631	$ 377