Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Income Tax Disclosure [Abstract]
Allowance for doubtful accounts	$ 505	$ 1,228
Compensation	7,306	7,187
Inventory differences	3,138	2,725
Stock-based compensation	7,890	8,494
Accrued post-retirement benefit obligations	5,713	6,676
Vacation accrual	3,201	2,896
Warranty accrual	4,401	4,185
Tax loss and tax credit carryforwards	10,197	9,338
Capital loss carryforward	2,104	2,012
Lease liability	23,429	16,392
Payroll deferral	2,056	4,114
Other – net	8,000	7,491
Total deferred tax assets	77,940	72,738
Deferred income	(5,049)	(4,743)
Goodwill and other intangible assets	(49,744)	(48,934)
Prepaid expenses	(6,481)	(6,454)
Right of use asset	(23,109)	(16,626)
Tax over book depreciation	(56,582)	(58,556)
Total deferred tax liabilities	(140,965)	(135,313)
Valuation allowance	(11,303)	(11,524)
Total net deferred tax liabilities	(74,328)	(74,099)
Long-term net deferred tax assets	680	607
Long-term net deferred tax liabilities	$ (75,008)	$ (74,706)