Loans and Allowance for Credit Losses TDRs by Class Segment (Details) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021 USD ($) loans	Jun. 30, 2020 USD ($) loans	Jun. 30, 2021 USD ($) loans	Jun. 30, 2020 USD ($) loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	28	79	63	96
Post-Modification Recorded Investment \| $	$ 6,428	$ 27,685	$ 20,413	$ 29,388
Commercial and industrial (1)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	0	13	4	14
Post-Modification Recorded Investment \| $	$ 0	$ 1,304	$ 1,894	$ 1,378
Real estate - commercial mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	3	6	5	7
Post-Modification Recorded Investment \| $	$ 2,729	$ 16,082	$ 6,891	$ 16,474
Real estate - residential mortgage
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	14	33	37	40
Post-Modification Recorded Investment \| $	$ 3,101	$ 8,505	$ 10,728	$ 9,165
Real-estate - home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	11	19	16	27
Post-Modification Recorded Investment \| $	$ 598	$ 1,609	$ 746	$ 2,186
Real-estate - construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	0	0	1	0
Post-Modification Recorded Investment \| $	$ 0	$ 0	$ 154	$ 0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans \| loans	0	8	0	8
Post-Modification Recorded Investment \| $	$ 0	$ 185	$ 0	$ 185

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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.

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