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Goodwill and Other Intangible Assets - Summary of changes (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Impairment of goodwill	$ 0	$ 0	$ 0
Goodwill
Goodwill, Beginning Balance		1,563,942	1,002,900
Goodwill subsequent fair value adjustment from CenterState acquisition		1,327
Goodwill, Ending Balance	$ 1,581,085	1,581,085	1,563,942
CSFL
Goodwill
Additions, Goodwill from acquisition			$ 561,042
Duncan-Williams, Inc.
Goodwill
Additions, Goodwill from acquisition		$ 15,816

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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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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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Amount of loss from the write-down of an asset representing the 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 (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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