Loans and Leases and the Allowance for Credit Losses - Schedule of TDRs that Defaulted during Period, within Twelve Months of Modification Date (Details) $ in Thousands	3 Months Ended
Mar. 31, 2021 USD ($) contract	Mar. 31, 2020 USD ($) contract
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted \| contract	22	23
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 308	$ 226
Consumer
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted \| contract	22	23
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 308	$ 226
Consumer \| Other
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted \| contract	4	5
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 27	$ 50
Consumer \| Automobile
Financing Receivable Modifications [Line Items]
Number of Contracts, TDRs that Defaulted \| contract	18	18
Recorded Investment (as of period ended), TDRs that Defaulted \| $	$ 281	$ 176

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953682-111524

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