Loans, Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	9 Months Ended
Sep. 30, 2021 USD ($) loan	Sep. 30, 2020 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	70	57
Recorded Investment(a)	$ 13,670	$ 8,800
Unpaid Principal Balance(b)	$ 13,744	$ 9,280
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	4	3
Recorded Investment(a)	$ 638	$ 1,250
Unpaid Principal Balance(b)	$ 638	$ 1,324
Commercial real estate — owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	0	2
Recorded Investment(a)	$ 0	$ 453
Unpaid Principal Balance(b)	$ 0	$ 751
Commercial real estate — investor
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	4	1
Recorded Investment(a)	$ 1,682	$ 530
Unpaid Principal Balance(b)	$ 1,682	$ 530
Real estate construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	0	1
Recorded Investment(a)	$ 0	$ 102
Unpaid Principal Balance(b)	$ 0	$ 102
Residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	55	32
Recorded Investment(a)	$ 10,434	$ 5,789
Unpaid Principal Balance(b)	$ 10,460	$ 5,870
Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loan	7	18
Recorded Investment(a)	$ 916	$ 676
Unpaid Principal Balance(b)	$ 963	$ 702

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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=123577603&loc=SL6953676-111524

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

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

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