Loans and Allowance for Loan and Lease Losses - schedule of loans restructured as TDRs (Details) - Nonperforming Financial Instruments $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan	Sep. 30, 2020 USD ($) loan	Sep. 30, 2019 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 420	$ 0	$ 420	$ 0
Post-Modification Outstanding Recorded Investment	$ 130	$ 0	$ 130	$ 0
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	1	0	1	0
Pre-Modification Outstanding Recorded Investment	$ 420	$ 0	$ 420	$ 0
Post-Modification Outstanding Recorded Investment	$ 130	$ 0	$ 130	$ 0

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Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

+ References

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- Definition

Amount, before troubled debt restructuring, of financing receivable to be modified.

+ References

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