Loans and Allowance for Credit Losses - Information related to nonaccrual loans by class (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Non accrual with no allowance for credit Loss	$ 23,303
Nonaccrual with an allowance for credit loss	34,757
Nonaccrual loan, recorded investment	58,060
Financing Receivable, Nonaccrual	58,060		$ 48,729
TDR's performing under restructured terms	10,100		16,600
Interest on nonaccrual loans	2,600	$ 2,700
Interest income, accrual method	282	$ 598	941
Commercial
Non accrual with no allowance for credit Loss	572
Nonaccrual with an allowance for credit loss	15,262
Nonaccrual loan, recorded investment	15,834
Financing Receivable, Nonaccrual	15,836		14,928
Interest income, accrual method			270
PPP loans
Non accrual with no allowance for credit Loss	0
Nonaccrual with an allowance for credit loss	0
Nonaccrual loan, recorded investment	0
Financing Receivable, Nonaccrual	0		0
Income producing - commercial real estate
Non accrual with no allowance for credit Loss	6,690
Nonaccrual with an allowance for credit loss	13,379
Nonaccrual loan, recorded investment	20,069
Financing Receivable, Nonaccrual	20,068		9,711
Interest income, accrual method			382
Owner occupied - Commercial real estate
Non accrual with no allowance for credit Loss	12,627
Nonaccrual with an allowance for credit loss	1,551
Nonaccrual loan, recorded investment	14,178
Financing Receivable, Nonaccrual	14,178		6,463
Interest income, accrual method			197
Real estate mortgage residential
Non accrual with no allowance for credit Loss	1,434
Nonaccrual with an allowance for credit loss	4,154
Nonaccrual loan, recorded investment	5,588
Financing Receivable, Nonaccrual	5,587		5,631
Construction - commercial and residential
Non accrual with no allowance for credit Loss	1,866
Nonaccrual with an allowance for credit loss	408
Nonaccrual loan, recorded investment	2,274
Financing Receivable, Nonaccrual	2,274		11,509
Interest income, accrual method			92
Home equity
Non accrual with no allowance for credit Loss	109
Nonaccrual with an allowance for credit loss	0
Nonaccrual loan, recorded investment	109
Financing Receivable, Nonaccrual	109		487
Other consumer
Non accrual with no allowance for credit Loss	5
Nonaccrual with an allowance for credit loss	3
Nonaccrual loan, recorded investment	8
Financing Receivable, Nonaccrual	$ 8		$ 0

Amount of Financing Receivable Non accrual an Allowance

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Amount of financing receivable on nonaccrual status including rounding differences from facing financial.

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Financing Receivable, Troubled Debt Restructuring, Postmodification, Performing

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Amount of financing receivable on nonaccrual status with no allowance for credit loss.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
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Amount of financing receivable on nonaccrual status.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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-Publisher FASB
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- Definition

Reflects the amount of additional interest income that would have been recorded if impaired or nonperforming loans were instead current, in compliance with their original terms, and outstanding throughout the reporting period or since origination (if held for part of the period).

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