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Loan and Lease Receivables, Impaired Loans and Leases and Allowance for Loan and Lease Losses (Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) loans	Sep. 30, 2019 USD ($) loans	Sep. 30, 2020 USD ($) loans	Sep. 30, 2019 USD ($) loans
Troubled debt restructurings
Number of Loans | loans	0	4	5	18
Pre-Modification Recorded Investment	$ 0	$ 6,578	$ 6,306	$ 17,186
Post-Modification Recorded Investment	$ 0	$ 6,545	$ 5,861	$ 16,764
Commercial real estate — owner occupied
Troubled debt restructurings
Number of Loans | loans	0	2	2	2
Pre-Modification Recorded Investment	$ 0	$ 3,774	$ 299	$ 3,774
Post-Modification Recorded Investment	$ 0	$ 3,741	$ 272	$ 3,741
Commercial and industrial
Troubled debt restructurings
Number of Loans | loans	0	2	3	16
Pre-Modification Recorded Investment	$ 0	$ 2,804	$ 6,007	$ 13,412
Post-Modification Recorded Investment	$ 0	$ 2,804	$ 5,589	$ 13,023

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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

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

+ 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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