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Acquisitions - Schedule of Intangible Assets Assumed (Details) - USD ($) $ in Thousands |  | 3 Months Ended
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Jan. 23, 2023 | Dec. 31, 2023
Backlog |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted-average Amortization Period (in years) |  | 9 months 18 days
Trade names |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted-average Amortization Period (in years) |  | 2 years 1 month 6 days
Client relations |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Weighted-average Amortization Period (in years) |  | 9 years 2 months 12 days
RPS Group PLC |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 174,094 |
Weighted-average Amortization Period (in years) | 8 years 3 months 18 days |
RPS Group PLC | Backlog |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 27,880 |
Weighted-average Amortization Period (in years) | 1 year 7 months 6 days |
RPS Group PLC | Trade names |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 27,260 |
Weighted-average Amortization Period (in years) | 3 years |
RPS Group PLC | Client relations |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Fair Value | $ 118,954 |
Weighted-average Amortization Period (in years) | 11 years 1 month 6 days |

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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 -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + 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 -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482665/350-30-50-1 + Details
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