Loans and Allowance for Credit Losses - Troubled Debt Restructurings (Details) $ in Millions	6 Months Ended
Jun. 30, 2022 USD ($)	Jun. 30, 2021	Dec. 31, 2021 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Troubled debt restructurings performing as of restructure date	$ 2.3		$ 2.4
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration