Debt instrument interest rate reduction percentage.

No definition available.

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- Definition

Debt instrument maturity date length of extension period.

+ References

No definition available.

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- Definition

Financing receivable number of loans past due.

+ References

No definition available.

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- Definition

Financing receivable period of modified contractually past due loans to be considered as payment default.

+ References

No definition available.

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- Definition

Number of business customers.

+ References

No definition available.

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- Definition

Number of months offered for deferral payments.

+ References

No definition available.

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- Definition

Payments received from forgiveness of loans.

+ References

No definition available.

+ Details

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- Definition

Percentage of payments received from forgiveness of loans.

+ References

No definition available.

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- Definition

Provision (reversal) for credit losses expensed.

+ References

No definition available.

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- Definition

Provision (reversal) for loan losses expensed.

+ References

No definition available.

+ Details

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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-Paragraph 33
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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524

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- Definition

Reflects the amount of the write-down related to a troubled debt restructuring.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554

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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554

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Troubled Debt Restructurings (Details Textual)	3 Months Ended		9 Months Ended		12 Months Ended
Troubled Debt Restructurings (Details Textual)	Sep. 30, 2021 USD ($) Loans Customer	Sep. 30, 2020 USD ($) Loans	Sep. 30, 2021 USD ($) Loans Customer	Sep. 30, 2020 USD ($) Loans	Dec. 31, 2020 USD ($)
Financing Receivable Modifications [Line Items]
Total troubled debt restructurings	$ 4,000,000.0		$ 4,000,000.0		$ 4,100,000
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings	0		0		0
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable Modifications [Line Items]
Total troubled debt restructurings	$ 199,800,000		$ 199,800,000
Number of business customers facilitated assistance \| Customer	1,714		1,714
Payments received from forgiveness of loans	$ 84,000,000.0
Small Business Administration (SBA), CARES Act, Paycheck Protection Program \| PPP Loan Originated In 2020
Financing Receivable Modifications [Line Items]
Payments received from forgiveness of loans			$ 198,400,000
Percentage of payments received from forgiveness of loans			99.20%
Small Business Administration (SBA), CARES Act, Paycheck Protection Program \| PPP Loan Originated In 2021
Financing Receivable Modifications [Line Items]
Payments received from forgiveness of loans	$ 29,200,000
Percentage of payments received from forgiveness of loans	34.70%
Consumer, Indirect
Financing Receivable Modifications [Line Items]
Troubled debt restructured loans with subsequent payment defaults \| Loans \| Loans	1		1
Payment Deferral
Financing Receivable Modifications [Line Items]
Number of months offered, deferrals			3 months
Residential Mortgage
Financing Receivable Modifications [Line Items]
Troubled debt restructured loans with subsequent payment defaults \| Loans \| Loans	1		1
Loans default payment past due period				30 days
Provision for loan losses					0
Commercial loans
Financing Receivable Modifications [Line Items]
Provision for loan losses			$ 0
Troubled debt restructured loans with subsequent payment defaults \| Loans \| Loans	2	1	2	1
Financing receivable number of loans past due \| Loans			1
Loans default payment past due period			30 days
Commercial farmland loans
Financing Receivable Modifications [Line Items]
Troubled debt restructured loans with subsequent payment defaults \| Loans \| Loans		2		2
Minimum \| Payment Deferral
Financing Receivable Modifications [Line Items]
Number of months offered, deferrals			3 months
Maximum \| Payment Deferral
Financing Receivable Modifications [Line Items]
Number of months offered, deferrals			12 months
Troubled debt restructurings
Financing Receivable Modifications [Line Items]
Specific reserves to loans	$ 109,000		$ 109,000		$ 81,000
Allowance adjustment charge offs	15,000	$ 33,000	91,000	$ 72,000
Provision for loan losses	$ 15,000	$ 33,000	$ 90,000	$ 72,000
Extended Maturity
Financing Receivable Modifications [Line Items]
Maturity period loans		48 months
Extended Maturity \| Minimum
Financing Receivable Modifications [Line Items]
Maturity period loans	193 months		22 days	48 months
Extended Maturity \| Maximum
Financing Receivable Modifications [Line Items]
Maturity period loans			361 months	183 months
Contractual Interest Rate Reduction
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate	0.25%	2.25%
Contractual Interest Rate Reduction \| Minimum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate			0.25%	1.00%
Contractual Interest Rate Reduction \| Maximum
Financing Receivable Modifications [Line Items]
Reduction of the notes stated interest rate			4.075%	2.25%