Goodwill and Intangible Assets - Schedule of Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018
Finite-lived intangible assets:
Gross Carrying Amount	$ 252,851	$ 134,950
Accumulated Amortization	(55,436)	(35,194)
Net Amount	197,415	99,756
Indefinite-lived intangible assets:
Gross Carrying Amount	58,546	0
Total intangible assets, gross carrying amount	311,397	134,950
Total intangible assets, net amount	255,961	99,756
QSI trade name
Indefinite-lived intangible assets:
Gross Carrying Amount	58,546	0
Customer relationships
Finite-lived intangible assets:
Gross Carrying Amount	176,088	100,956
Accumulated Amortization	(29,198)	(18,724)
Net Amount	$ 146,890	$ 82,232
Customer relationships | Minimum
Indefinite-lived intangible assets:
Useful life	1 year	1 year
Customer relationships | Maximum
Indefinite-lived intangible assets:
Useful life	12 years	10 years
Trade name
Finite-lived intangible assets:
Gross Carrying Amount	$ 10,253	$ 8,888
Accumulated Amortization	(8,593)	(6,469)
Net Amount	$ 1,660	$ 2,419
Trade name | Minimum
Indefinite-lived intangible assets:
Useful life	1 year	1 year
Trade name | Maximum
Indefinite-lived intangible assets:
Useful life	3 years	3 years
Customer backlog
Finite-lived intangible assets:
Gross Carrying Amount	$ 24,198	$ 16,000
Accumulated Amortization	(12,435)	(6,730)
Net Amount	11,763	9,270
Favorable lease
Finite-lived intangible assets:
Gross Carrying Amount	0	552
Accumulated Amortization	0	(197)
Net Amount	$ 0	$ 355
Indefinite-lived intangible assets:
Useful life	9 years	9 years
Non-compete
Finite-lived intangible assets:
Gross Carrying Amount	$ 9,369	$ 8,554
Accumulated Amortization	(5,105)	(3,074)
Net Amount	$ 4,264	$ 5,480
Non-compete | Minimum
Indefinite-lived intangible assets:
Useful life	4 years	4 years
Non-compete | Maximum
Indefinite-lived intangible assets:
Useful life	5 years	5 years
Developed technology
Finite-lived intangible assets:
Gross Carrying Amount	$ 32,944	$ 0
Accumulated Amortization	(106)	0
Net Amount	$ 32,838	$ 0
Developed technology | Minimum
Indefinite-lived intangible assets:
Useful life	5 years
Developed technology | Maximum
Indefinite-lived intangible assets:
Useful life	7 years