Financing receivable deferred fees and costs.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

- Definition

Loan modifications to number of borrowers affected by covid.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Qualifying deferment status percentage of loan portfolio.

+ References

No definition available.

+ Details

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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.

+ Details

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Period Type:	duration

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

+ Details

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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
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953676-111524

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-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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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=121593590&loc=d3e4428-111522

+ Details

Name:	us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- 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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-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

+ Details

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Period Type:	duration

- Definition

For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
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-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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- Details

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Loans and Allowance for Loan and Lease Losses (Narrative) (Details)	12 Months Ended
	Dec. 31, 2020 USD ($) Loan contract Borrower	Dec. 31, 2019 USD ($) Loan contract	Dec. 31, 2018 USD ($) contract	Sep. 30, 2020 USD ($)
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable deferred fees and costs	$ 9,084,000	$ 1,081,000
Loans and leases receivable, impaired, interest lost on nonaccrual loans	638,000	333,000	$ 536,000
Loans and leases receivable, impaired, commitment to lend	0
Financing receivable, modifications, recorded investment	$ 1,480,000	$ 2,238,000
Number of troubled debt restructured loans \| Loan	0	0
Loan modifications to number of borrowers affected by Covid \| Borrower	1,000
Loans and leases receivable, gross, carrying amount	$ 2,384,041,000	$ 1,762,756,000	1,624,067,000
Loans to certain executive officers, directors, and their related interests	12,567,000	11,220,000
Loans to certain executive officers, directors, and their related interests, new loans and advances	6,511,000
Loans to certain executive officers, directors, and their related interests, Repayments	$ 5,164,000
CARES Act [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Qualifying deferment status percentage of loan portfolio	1.00%
Loans and leases receivable, gross, carrying amount	$ 11,681,000			$ 32,851,000
Entity Loan Modification Program [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	$ 582,000	$ 43,000	$ 266,000
Number of troubled debt restructured loans \| contract	3	2	1
Nonaccruing [Member] \| Nine Loans With Sven Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	$ 1,017,000
Nonaccruing [Member] \| One Large Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	535,000	$ 1,252,000
Nonaccruing [Member] \| Eight Loans with Five Relationships [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment		1,748,000
Residential Mortgage [Member] \| Residential Portfolio [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	510,000	490,000
Loans and leases receivable, gross, carrying amount	201,841,000	236,724,000	$ 253,543,000
Residential Mortgage [Member] \| Residential Portfolio [Member] \| Entity Loan Modification Program [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	$ 47,000
Number of troubled debt restructured loans \| contract	2
Residential Mortgage [Member] \| Residential Portfolio [Member] \| Accruing \| Three Unrelated Borrowers [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing receivable, modifications, recorded investment	$ 463,000	$ 490,000