Summary of Significant Accounting Policies (Components of Other Current Liabilities) (Details) - USD ($) $ in Thousands	Dec. 26, 2025	Dec. 27, 2024	Dec. 29, 2023
Other Current Liabilities
Accrued self-insurance retentions	$ 8,013	$ 8,240
Accrued warranty and service liabilities	21,103	18,712	$ 15,408
Accrued trade promotions	7,511	11,086
Payable for employee stock purchases	15,546	16,767
Customer Advances and Deferred Revenue	93,995	52,522
Income taxes payable	15,493	8,102
Tax payable, other	$ 14,693	$ 14,557
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating lease liabilities, current	$ 8,769	$ 7,838
Right of return refund liability	15,055	15,557
Business combination, contingent consideration, liability, current	0	10,339
Other	41,689	48,008
Other current liabilities	$ 241,867	$ 211,728