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Segment Reporting - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	3
Investment securities gains (losses), net	$ (799)	$ 78,931	$ (7,659)
Goodwill impairment	0	44,877	$ 0
Treasury and Corporate Other
Segment Reporting Information [Line Items]
PPP fees	79,200	46,000
Increase in PPP fees	$ 33,200
Operating Segments | Consumer Mortgage Reporting Unit
Segment Reporting Information [Line Items]
Goodwill impairment		$ 44,900

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Increase In Paycheck Protection Program, Fee Income

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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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