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

No definition available.

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- Definition

Business Combination, Contingent Consideration Arrangements, Period

+ References

No definition available.

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- Definition

Represents the number of employees acquired in the acquisition.

+ References

No definition available.

+ Details

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- Definition

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.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 30
-Paragraph 8
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-SubTopic 30
-Section 30
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
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-Publisher FASB
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-SubTopic 30
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7008-128479

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
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-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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- Definition

Amount of revenue attributable to disposal group, including, but not limited to, discontinued operation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

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.

+ References

No definition available.

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- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

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- Definition

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

+ References

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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Acquisitions and Divestitures - Narrative (Details)	3 Months Ended					12 Months Ended
Acquisitions and Divestitures - Narrative (Details)	Dec. 30, 2018 USD ($)	Jul. 01, 2018 USD ($)	Apr. 01, 2018 USD ($) employee	Dec. 31, 2017 USD ($) employee	Jan. 01, 2017	Sep. 30, 2018 USD ($)
Mergers and Acquisitions
Contingent earn-out liability	$ 29,000,000
Aggregate maximum of contingent consideration	52,200,000
Contingent earn-out liability adjustment	$ 0			$ 0
Minimum
Mergers and Acquisitions
Earn-out period	2 years
Minimum \| Existing customer contracts
Mergers and Acquisitions
Useful life of intangible assets	1 year
Minimum \| Trade names
Mergers and Acquisitions
Useful life of intangible assets	3 years
Maximum
Mergers and Acquisitions
Earn-out period	3 years
Maximum \| Existing customer contracts
Mergers and Acquisitions
Useful life of intangible assets	10 years
Maximum \| Trade names
Mergers and Acquisitions
Useful life of intangible assets	5 years
Glumac
Mergers and Acquisitions
Number of employees acquired in acquisition \| employee				300
Fair value of acquisition purchase price				$ 38,400,000
Cash paid to the former owners				20,000,000
Contingent earn-out liability				18,400,000
Aggregate maximum of contingent consideration				$ 20,000,000
Contingent consideration achievement period					3 years
Norman Disney & Young
Mergers and Acquisitions
Number of employees acquired in acquisition \| employee			700
Fair value of acquisition purchase price			$ 56,100,000
Cash paid to the former owners			46,900,000
Contingent earn-out liability			7,600,000
Amount held in escrow			1,600,000
Aggregate maximum of contingent consideration			$ 20,200,000
Earn-out period			3 years
Non-core field services business \| Disposed of by sale
Mergers and Acquisitions
Proceeds from sale of divested business		$ 30,200,000
Revenue from wired and fiber optic communication and infrastructure projects		$ 70,000,000
Loss on disposition of business						$ 1,700,000