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Qualified Affordable Housing (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2021 USD ($) housing_project | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in qualified affordable housing projects | $ 12.6 | $ 8.4 |
Tax credits to offset amortization expense of investments in affordable housing projects | 2.0 | 2.2 | $ 4.2
New Qualified Affordable Housing Project |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Investments in qualified affordable housing projects | $ 19.4 |  |
Number of qualified affordable housing projects | housing_project | 2 |  |
Funds invested, amount | $ 2.3 |  |
Noninterest Expense |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Amortization expense of investments in qualified affordable housing projects | $ 1.2 | $ 3.2 | $ 2.6

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- Definition Amount of affordable housing tax credits and other tax benefits recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 740 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=116633289&loc=SL49122993-202985 + Details
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