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Business Combinations - Additional Information (Details) $ in Thousands |  | 12 Months Ended
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Jul. 01, 2023 client | Dec. 31, 2023 USD ($) business | Dec. 31, 2022 USD ($) business | Dec. 31, 2021 USD ($)
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Number of clients from acquiree | client | 1,200 |  |  |
Business acquisition, annualized revenue |  | $ 64,900 |  |
Proceeds from sales of assets and divested operations |  | 3,059 | $ 3,022 | $ 9,710
Financial Services Practice Group |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Gain (loss) on disposition of business |  | $ 1,500 |  |
Number of business sold | business |  | 1 |  |
Benefits and Insurance Services |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Gain (loss) on disposition of business |  | $ 1,400 | $ 2,400 |
Number of business sold | business |  |  | 1 |
Proceeds from sales of assets and divested operations |  |  | $ 2,500 |
Client lists |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Acquired finite-lived intangible assets, useful life |  | 10 years |  |
Other intangibles |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Acquired finite-lived intangible assets, useful life |  | 3 years |  |
Somerest Acquisition |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Transaction and integration related costs |  | $ 3,400 |  |
Marks Paneth Acquisition |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |
Transaction and integration related costs |  | $ 10,500 |  |

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- Definition Number Of Clients From Acquiree + References No definition available. + Details
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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 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 The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(2) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(3) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479328/805-10-50-2 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479405/805-10-25-23 + Details
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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 -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 810 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481203/810-10-50-1B + Details
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