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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Loans and Allowance for Loan Losses by Evaluation Method (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Allowance for loan losses, Individually evaluated for impairment | $ 0 | $ 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 7,788 | 7,674 |  |
Allowance for loan losses | 7,788 | 7,674 | $ 8,536 | $ 8,481
Loans | 819,774 |  |  | 803,729
Consumer Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 0 | 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 1,935 | 1,930 |  |
Allowance for loan losses | 1,935 | 1,930 | 2,366 | 2,165
Loans, Individually evaluated for impairment | 189 | 191 |  |
Non-impaired gross loans | 208,883 | 208,786 |  |
Loans | 209,072 | 208,977 |  | 208,977
Commercial Non Real Estate Segment [Member] |  |  |  |
Allowance for loan losses, Individually evaluated for impairment | 0 | 0 |  |
Allowance for loan losses, Collectively evaluated for impairment | 944 | 1,099 |  |
Allowance for loan losses | 944 | 1,099 | 634 | 670
Loans, Individually evaluated for impairment | 287 | 301 |  |
Non-impaired gross loans | 52,509 | 59,963 |  |
Loans | 52,796 | 60,264 |  | 60,264
Real Estate Construction Portfolio Segment[Member] |  |  |  |
Allowance for loan losses, Collectively evaluated for impairment | 593 | 422 |  |
Allowance for loan losses | 593 | 422 | 511 | 503
Loans, Individually evaluated for impairment | 0 | 0 |  |
Non-impaired gross loans | 59,741 | 48,841 |  |
Loans | 59,741 | 48,841 |  | 48,841
Commercial Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, Collectively evaluated for impairment | 3,423 | 3,121 |  |
Allowance for loan losses | 3,423 | 3,121 | 3,862 | 3,853
Loans, Individually evaluated for impairment | 5,358 | 5,386 |  |
Non-impaired gross loans | 411,595 | 400,336 |  |
Loans | 416,953 | 405,722 |  | 405,722
Public Sector and IDA Portfolio Segment[Member] |  |  |  |
Allowance for loan losses, Collectively evaluated for impairment | 307 | 297 |  |
Allowance for loan losses | 307 | 297 | 311 | 339
Loans, Individually evaluated for impairment | 0 | 0 |  |
Non-impaired gross loans | 47,156 | 47,899 |  |
Loans | 47,156 | 47,899 |  | 47,899
Consumer Non Real Estate Portfolio Segment [Member] |  |  |  |
Allowance for loan losses, Collectively evaluated for impairment | 415 | 444 |  |
Allowance for loan losses | 415 | 444 | 496 | 555
Loans, Individually evaluated for impairment | 0 | 0 |  |
Non-impaired gross loans | 34,056 | 32,026 |  |
Loans | 34,056 | 32,026 |  | 32,026
Unallocated Financing Receivables [Member] |  |  |  |
Allowance for loan losses, Collectively evaluated for impairment | 171 | 361 |  |
Allowance for loan losses | 171 | 361 | $ 356 | $ 396
Loans, Individually evaluated for impairment | 5,834 | 5,878 |  |
Non-impaired gross loans | 813,940 | 797,851 |  |
Loans | $ 819,774 | $ 803,729 |  |

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively 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) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + 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) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI https://asc.fasb.org/extlink&oid=122038336&loc=d3e74567-122707 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI https://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
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