Acquisitions and Purchase Accounting Estimated Fair Value of Assets Acquired and Liabilities Assumed - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2026	Dec. 28, 2024	Dec. 30, 2023
Asset Acquisition [Line Items]
Goodwill	$ 1,799,649	$ 1,744,246	$ 1,704,273
Business Combination, Contingent Consideration, Liability	26,764	$ 25,748
2023 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	7,877
Business Combination, Recognized Asset Acquired, Asset, Current	40,122
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	31,011
Goodwill	63,063
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	32,248
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	1,295
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	(290)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	(369)
Business Combination, Recognized Liability Assumed, Liability, Current	(40,759)
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	(1,132)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(11,229)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	121,942
Business Combination, Contingent Consideration, Liability	8,681
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	130,699
2023 Acquisitions | Backlog
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	$ 2,300
2023 Acquisitions | Backlog | Minimum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 months
2023 Acquisitions | Backlog | Maximum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 months
2023 Acquisitions | Customer Relationships
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	$ 12,100
2023 Acquisitions | Customer Relationships | Minimum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years
2023 Acquisitions | Customer Relationships | Maximum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
2025 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	$ 7,434
Business Combination, Recognized Asset Acquired, Asset, Current	41,596
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	6,073
Goodwill	13,312
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	10,263
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	5,500
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	(875)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	(696)
Business Combination, Recognized Liability Assumed, Liability, Current	(36,709)
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	(2,317)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(10,064)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	33,517
Business Combination, Contingent Consideration, Liability	4,698
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	38,215
2025 Acquisitions | Backlog
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	$ 2,000
2025 Acquisitions | Backlog | Minimum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	6 months
2025 Acquisitions | Technology-Based Intangible Assets
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	$ 1,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
2025 Acquisitions | Customer Relationships | Minimum
Asset Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	7 years
Measurement period adjustment | 2023 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	$ 9
Business Combination, Recognized Asset Acquired, Asset, Current	(1,714)
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	(504)
Goodwill	2,017
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	0
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	1,029
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	0
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	0
Business Combination, Recognized Liability Assumed, Liability, Current	1,545
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	0
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(466)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	2,012
Business Combination, Contingent Consideration, Liability	0
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	2,088
Measurement period adjustment | 2025 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	0
Business Combination, Recognized Asset Acquired, Asset, Current	(153)
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	0
Goodwill	(107)
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	0
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	5,456
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	0
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	0
Business Combination, Recognized Liability Assumed, Liability, Current	(196)
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	(13)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(4,987)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	0
Business Combination, Contingent Consideration, Liability	0
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	0
Previously Reported | 2023 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	7,868
Business Combination, Recognized Asset Acquired, Asset, Current	41,836
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	31,515
Goodwill	61,046
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	32,248
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	266
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	(290)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	(369)
Business Combination, Recognized Liability Assumed, Liability, Current	(42,304)
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	(1,132)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(10,763)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	119,930
Business Combination, Contingent Consideration, Liability	8,681
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	128,611
Previously Reported | 2025 Acquisitions
Asset Acquisition [Line Items]
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	7,434
Business Combination, Recognized Asset Acquired, Asset, Current	41,749
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment	6,073
Goodwill	13,419
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Excluding Goodwill	10,263
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent	44
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current	(875)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent	(696)
Business Combination, Recognized Liability Assumed, Liability, Current	(36,513)
Business Combination, Recognized Liability Assumed, Deferred Tax Liability	(2,304)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(5,077)
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Initial Consideration, Net	33,517
Business Combination, Contingent Consideration, Liability	4,698
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	$ 38,215