Maximum amount of equity based compensation to be earned over time and accounted for as compensation expense.

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Departure of employees during the reporting period.

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Service period over which equity based compensation is accounted for as compensation.

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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.

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

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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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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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Value, after forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Acquisitions - Gadberry & Wemlo Acquisition (Details) $ in Thousands			3 Months Ended	9 Months Ended
	Sep. 10, 2020 USD ($)	Aug. 25, 2020 USD ($)	Mar. 31, 2021 employee	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Business Acquisition [Line Items]
Cash consideration, net of cash acquired				$ 180,402	$ 10,627
Goodwill				$ 268,390		$ 165,358
Time-based awards
Business Acquisition [Line Items]
Number of employees departed \| employee			2
Gadberry
Business Acquisition [Line Items]
Cash consideration, net of cash acquired	$ 4,600
Maximum amount of equity based compensation to be earned over time	9,900
Equity-based compensation, value	$ 900
Gadberry \| Minimum
Business Acquisition [Line Items]
Service period over which equity based compensation is accounted (in years)	2 years
Gadberry \| Maximum
Business Acquisition [Line Items]
Service period over which equity based compensation is accounted (in years)	3 years
Gadberry \| Common Class A
Business Acquisition [Line Items]
Consideration transferred, stock	$ 5,500
Wemlo
Business Acquisition [Line Items]
Cash consideration, net of cash acquired		$ 6,100
Maximum amount of equity based compensation to be earned over time		6,700
Goodwill		14,400
Other intangible assets		6,300
Wemlo \| Time-based awards
Business Acquisition [Line Items]
Number of employees departed \| employee			2
Wemlo \| Common Class A
Business Acquisition [Line Items]
Consideration transferred, stock		$ 3,300