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Represents the earn out period for operating income projection used for fair value measurement.

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No definition available.

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Business Combination, Consideration Transferred, Working Capital Adjustments

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Business Combination, Contingent Consideration Arrangements, Earn Out Period

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Business Combination, Number Of Acquisitions

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Fair Value Adjustments To Contingent Consideration

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of liability recognized arising from contingent consideration in a business combination.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
Acquisitions - Narrative (Details) $ in Thousands	Jun. 27, 2021 USD ($)	Jun. 28, 2020 USD ($)	Jun. 27, 2021 USD ($) acquisition	Sep. 27, 2020 USD ($) acquisition	Jun. 28, 2020 USD ($)	Jul. 26, 2021 employee
Business Acquisition [Line Items]
Contingent earn-out liability	$ 31,200		$ 31,200
Gain on fair value adjustment to contingent consideration	(30)	$ (50)	$ 163		$ 1,521
Minimum
Business Acquisition [Line Items]
Significant unobservable input, earn-out period			2 years
Minimum \| Existing customer contracts
Business Acquisition [Line Items]
Useful life of intangible assets			1 year
Minimum \| Trade names
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Maximum
Business Acquisition [Line Items]
Significant unobservable input, earn-out period			3 years
Maximum \| Existing customer contracts
Business Acquisition [Line Items]
Useful life of intangible assets			10 years
Maximum \| Trade names
Business Acquisition [Line Items]
Useful life of intangible assets			5 years
Series of individually immaterial business acquisitions
Business Acquisition [Line Items]
Number of acquisitions \| acquisition			3
Fair value of acquisition purchase price			$ 29,100
Initial cash payments			18,900
Contingent earn-out liability	10,200		10,200
Aggregate maximum of contingent consideration	19,000		$ 19,000
Series of individually immaterial business acquisitions \| Minimum
Business Acquisition [Line Items]
Earn-out period			3 years
Series of individually immaterial business acquisitions \| Maximum
Business Acquisition [Line Items]
Earn-out period			4 years
SEG and BWF
Business Acquisition [Line Items]
Number of acquisitions \| acquisition				2
Fair value of acquisition purchase price				$ 88,600
Initial cash payments				71,400
Contingent earn-out liability				16,500
Aggregate maximum of contingent consideration				$ 28,000
Earn-out period				3 years
Payables related to estimated post-closing adjustments				$ 700
All acquisitions
Business Acquisition [Line Items]
Aggregate maximum of contingent consideration	$ 68,200		$ 68,200
Hoare Lea \| Subsequent Event
Business Acquisition [Line Items]
Number of employees (more than) \| employee						900