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.

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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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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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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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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Goodwill and Intangible Assets - Changes in Carrying Value of Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
	Jan. 03, 2020	Mar. 31, 2020	Mar. 31, 2019
Goodwill
Goodwill beginning balance		$ 87,649
Goodwill ending balance		181,808
Intangible assets
Intangible assets beginning balance		16,686
Amortization of intangible assets		(9,878)	$ (753)
Intangible assets ending balance		164,408
Sandler O'Neill
Goodwill
Goodwill acquired	$ 94,200	$ 94,159
Goodwill ending balance	94,159
Intangible assets
Intangible assets acquired	157,600
Customer relationships \| Sandler O'Neill
Intangible assets
Intangible assets acquired	72,200
Weighted average life		2 years 4 months 24 days
Trade name \| Sandler O'Neill
Intangible assets
Intangible assets acquired	$ 85,400