Business combination contingent consideration liability fair value.

No definition available.

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- Definition

Business combination contingent consideration liability increase (decrease) adjustment.

+ References

No definition available.

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- Definition

Business combination, recognized identifiable assets acquired and liabilities assumed, funds held for clients.

+ References

No definition available.

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- Definition

Client list purchased.

+ References

No definition available.

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- Definition

Number of common shares issued.

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No definition available.

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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

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

+ References

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- Definition

Name of the acquired entity.

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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
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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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

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- Definition

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

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled within one year or the normal operating cycle, if longer.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination, expected to be settled beyond one year or the normal operating cycle, if longer.

+ References

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- Definition

The amount, measured at acquisition-date fair value, of all liabilities assumed that arise from contingencies and were recognized by the entity.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

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- Definition

Cash outflow representing an adjustment to the purchase price of a previous acquisition.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Topic 230
-SubTopic 10
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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.

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Acquisitions - Additional Information (Detail)	12 Months Ended
Acquisitions - Additional Information (Detail)	Dec. 31, 2019 USD ($) Business Client_List shares	Dec. 31, 2018 USD ($) Client_List shares	Dec. 31, 2017 USD ($)
Business Acquisition, Contingent Consideration [Line Items]
Number of businesses acquired \| Business	6
Consideration paid in cash	$ 19,400,000	$ 27,900,000
Consideration paid in common stock	2,000,000.0	900,000
Contingent consideration	11,200,000	13,400,000
Cash	800,000	300,000
Acquired client funds	6,900,000
Contingent consideration arrangements - High	11,500,000	15,300,000
Aggregate fair value of contingent consideration	10,300,000
Contingent consideration, current	16,193,000	22,538,000
Contingent consideration, non-current	15,896,000	17,170,000
Annual aggregate revenue	17,400,000	11,000,000.0
Fair value of obligation at acquisition date		13,400,000
Goodwill	588,213,000	564,300,000	$ 528,424,000
Changes in fair value of contingent consideration	1,600,000	2,600,000
Consideration paid in cash	$ 16,900,000	$ 11,000,000.0
Number of common stock issued \| shares	100,000	100,000
Benefits and Insurance Services Practice Group [Member]
Business Acquisition, Contingent Consideration [Line Items]
Goodwill	$ 252,300,000	$ 233,008,000	219,897,000
Financial Services Practice Group [Member]
Business Acquisition, Contingent Consideration [Line Items]
Goodwill	334,247,000	329,626,000	$ 306,861,000
Contingent Purchase Price Liability – Current [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, current	2,800,000	3,900,000
Contingent Purchase Price Liability – Non-current [Member]
Business Acquisition, Contingent Consideration [Line Items]
Contingent consideration, non-current	$ 7,500,000	$ 9,500,000
Wenner Group, LLC [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Jan. 01, 2019
Acquired entity, name	Wenner Group, LLC
Paydayta, Inc [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Jul. 01, 2019
Acquired entity, name	Paydayta, Inc.
Gavion, LLC [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Jul. 01, 2019
Acquired entity, name	Gavion, LLC
QBA Benefits, LLC [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Aug. 01, 2019
Acquired entity, name	QBA Benefits, LLC.
Ericson CPAs [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Aug. 01, 2019
Acquired entity, name	Ericson CPAs
Brinig Taylor Zimmer, Inc [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition	Sep. 01, 2019
Acquired entity, name	Brinig Taylor Zimmer, Inc.
Laurus Transaction Advisors, LLC. [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition		Feb. 01, 2018
Acquired entity, name		Laurus
InR Advisory Services, LLC [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition		Apr. 01, 2018
Acquired entity, name		InR
Sequoia Financial Group, LLC. [Member]
Business Acquisition, Contingent Consideration [Line Items]
Effective date of acquisition		Dec. 01, 2018
Acquired entity, name		Sequoia
Dec. 31, 2020 InR Advisory Services, LLC (“InR”) and Laurus Transaction Advisors, LLC (“Laurus”) [Member]
Business Acquisition, Contingent Consideration [Line Items]
Goodwill	$ 24,400,000	$ 36,100,000
Acquisition of Client Lists [Member] \| Benefits and Insurance Services Practice Group [Member]
Business Acquisition, Contingent Consideration [Line Items]
Consideration paid in cash	300,000
Contingent consideration	$ 200,000
Number of client list purchased \| Client_List	1
Acquisition of Client Lists [Member] \| Financial Services Practice Group [Member]
Business Acquisition, Contingent Consideration [Line Items]
Consideration paid in cash		300,000
Contingent consideration		$ 200,000
Number of client list purchased \| Client_List		1
Previous Client List Purchases [Member]
Business Acquisition, Contingent Consideration [Line Items]
Consideration paid in cash	$ 900,000	$ 800,000