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Note 9 - Loans (Details Textual) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Impaired Financing Receivable, Recorded Investment | $ 86,333,000 |  | $ 65,846,000
Percentage Of Charge Off To Contractual Balances For Impaired Loans | 1.90% |  | 10.70%
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve | $ 0 | $ 0 |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default | 0 |  |
Financing Receivable, Troubled Debt Restructuring, Commitment to Lend | $ 0 |  |
Minimum [Member] |  |  |
Period Loan Is In Payment Default (Day) | 60 days |  |
Maximum [Member] |  |  |
Period Loan Is In Payment Default (Day) | 90 days |  |
Nonaccrual Loans [Member] |  |  |
Impaired Financing Receivable, Recorded Investment | $ 86,300,000 |  | $ 65,800,000
Accruing Troubled Debt Restructuring [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring | 13,000,000.0 |  | 12,800,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve | 52,000 |  | 7,000
Non-accruing Troubled Debt Restructuring [Member] |  |  |
Financing Receivable, Troubled Debt Restructuring | 14,200,000 |  | 8,200,000
Financing Receivables, Impaired, Troubled Debt Restructuring, Specific Reserve | $ 2,600,000 |  | $ 3,000

X
- Definition Reflects the amount of the specific reserve related to a troubled debt restructuring. + References No definition available. + Details
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X
- Definition Percentage of charge-off to contractual balances for impaired loans. + References No definition available. + Details
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- Definition Period Loan Is In Payment Default + References No definition available. + Details
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X
- 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 https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
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X
- Definition Amount of financing receivable modified as troubled debt restructuring within previous 12 months, with subsequent payment default. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953682-111524 + Details
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- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953550-111524 + Details
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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 https://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554 + Details
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