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Acquisitions - Estimated Fair Values of Identifiable Intangible Assets and Related Weighted Average Amortization (Details) - 2020 Acquisitions $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items] |
Estimated fair value at acquisition date | $ 96,826
Weighted average amortization period at acquisition date | 6 years 6 months
Customer relationships |
Finite-Lived Intangible Assets [Line Items] |
Estimated fair value at acquisition date | $ 81,154
Weighted average amortization period at acquisition date | 6 years 1 month 6 days
Backlog |
Finite-Lived Intangible Assets [Line Items] |
Estimated fair value at acquisition date | $ 4,022
Weighted average amortization period at acquisition date | 1 year 4 months 24 days
Trade names |
Finite-Lived Intangible Assets [Line Items] |
Estimated fair value at acquisition date | $ 7,654
Weighted average amortization period at acquisition date | 14 years 4 months 24 days
Non-compete agreements |
Finite-Lived Intangible Assets [Line Items] |
Estimated fair value at acquisition date | $ 3,996
Weighted average amortization period at acquisition date | 5 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + 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. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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