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Goodwill and Other Intangible Assets - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Nov. 30, 2020	Nov. 30, 2019
Goodwill [Line Items]
Goodwill acquired	$ 1,803	$ 84,175
Goodwill	373,424	371,621
Amortization expense on finite-lived intangible assets	2,500	800	$ 900
DNB
Goodwill [Line Items]
Goodwill acquired	1,800	$ 84,200
Goodwill	86,000			$ 85,978	$ 84,175
Identifiable Intangible Assets	8,700
DNB | Wealth management
Goodwill [Line Items]
Identifiable Intangible Assets	$ 300			$ 1,772	$ 1,772

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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

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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.

+ References

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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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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