Business Acquisitions - Schedule of the Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands			6 Months Ended	12 Months Ended
	Apr. 06, 2023	Feb. 22, 2023	Jun. 29, 2024	Dec. 30, 2023
Series of Individually Immaterial Business Acquisitions
Acquired Finite-Lived Intangible Assets [Line Items]
Cash			$ 2,080	$ 13,762
Billed and unbilled receivables, net			7,043	20,588
Right-of-use assets			2,583	4,357
Property and equipment			1,762	3,026
Prepaid expenses			1,093	2,700
Other assets			46	158
Total Assets			51,380	154,530
Liabilities			(5,995)	(32,654)
Deferred tax liabilities			(131)	(21,652)
Net assets acquired			45,254	100,224
Consideration paid (Cash, Notes and/or stock)			59,961	223,807
Contingent earn-out liability (Cash and stock)			4,339	610
Total Consideration			64,300	224,417
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)			19,046	124,193
Series of Individually Immaterial Business Acquisitions | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			28,761	91,670
Series of Individually Immaterial Business Acquisitions | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			956	5,501
Series of Individually Immaterial Business Acquisitions | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			4,300	5,699
Series of Individually Immaterial Business Acquisitions | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			0	6,209
Series of Individually Immaterial Business Acquisitions | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:			$ 2,756	860
VIS
Acquired Finite-Lived Intangible Assets [Line Items]
Cash				7,027
Billed and unbilled receivables, net				5,042
Right-of-use assets				2,162
Property and equipment				118
Prepaid expenses				1,503
Other assets				0
Total Assets				59,447
Liabilities				(16,689)
Deferred tax liabilities				(8,728)
Net assets acquired				34,030
Consideration paid (Cash, Notes and/or stock)				75,371
Contingent earn-out liability (Cash and stock)				0
Total Consideration	$ 75,371			75,371
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)				41,341
VIS | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				35,626
VIS | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				3,025
VIS | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				894
VIS | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				4,024
VIS | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				26
Axim
Acquired Finite-Lived Intangible Assets [Line Items]
Cash				5,419
Billed and unbilled receivables, net				13,937
Right-of-use assets				1,643
Property and equipment				2,870
Prepaid expenses				1,180
Other assets				156
Total Assets				87,616
Liabilities				(13,668)
Deferred tax liabilities				(12,428)
Net assets acquired				61,520
Consideration paid (Cash, Notes and/or stock)				139,569
Contingent earn-out liability (Cash and stock)				0
Total Consideration		$ 139,569		139,569
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)				78,049
Axim | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				53,518
Axim | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				2,266
Axim | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				3,862
Axim | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				2,185
Axim | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				580
Other
Acquired Finite-Lived Intangible Assets [Line Items]
Cash				1,316
Billed and unbilled receivables, net				1,609
Right-of-use assets				552
Property and equipment				38
Prepaid expenses				17
Other assets				2
Total Assets				7,467
Liabilities				(2,297)
Deferred tax liabilities				(496)
Net assets acquired				4,674
Consideration paid (Cash, Notes and/or stock)				8,867
Contingent earn-out liability (Cash and stock)				610
Total Consideration				9,477
Excess consideration over the amounts assigned to the net assets acquired (Goodwill)				4,803
Other | Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				2,526
Other | Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				210
Other | Customer backlog
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				943
Other | Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				0
Other | Non-compete
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets:				$ 254