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Note 5 - Loans and Related Allowance for Loan and Lease Losses - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | $ 490 | $ 660
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 12,969 | 6,108
Less: allowance for loan and lease losses | $ 13,459 |  |  | $ 6,768 | $ 6,768 |  |  | $ 7,428 | $ 6,768 | $ 7,428 | 13,459 | 6,768
Beginning balance |  |  |  | 6,768 |  |  |  | 7,428 | 6,768 | 7,428 |  |
Charge-offs |  |  |  |  |  |  |  |  | (3,839) | (1,809) |  |
Recoveries |  |  |  |  |  |  |  |  | 690 | 259 |  |
Provision | 2,100 | $ 4,000 | $ 1,000 | 2,740 | 460 | $ 80 | $ 110 | 240 | 9,840 | 890 |  |
Ending balance | 13,459 |  |  |  | 6,768 |  |  |  | 13,459 | 6,768 |  |
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 10 | 45
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 1,332 | 756
Less: allowance for loan and lease losses | 1,342 |  |  | 801 | 801 |  |  | 1,315 | 801 | 1,315 | 1,342 | 801
Beginning balance |  |  |  | 801 |  |  |  | 1,315 | 801 | 1,315 |  |
Charge-offs |  |  |  |  |  |  |  |  | (50) | (32) |  |
Recoveries |  |  |  |  |  |  |  |  | 17 | 5 |  |
Provision |  |  |  |  |  |  |  |  | 574 | (487) |  |
Ending balance | 1,342 |  |  |  | 801 |  |  |  | 1,342 | 801 |  |
Commercial Real Estate Portfolio Segment [Member] | Non-owner occupied Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 371 | 582
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 6,446 | 2,800
Less: allowance for loan and lease losses | 6,817 |  |  | 3,382 | 3,382 |  |  | 2,862 | 3,382 | 2,862 | 6,817 | 3,382
Beginning balance |  |  |  | 3,382 |  |  |  | 2,862 | 3,382 | 2,862 |  |
Charge-offs |  |  |  |  |  |  |  |  | (3,022) | 0 |  |
Recoveries |  |  |  |  |  |  |  |  | 74 | 12 |  |
Provision |  |  |  |  |  |  |  |  | 6,383 | 508 |  |
Ending balance | 6,817 |  |  |  | 3,382 |  |  |  | 6,817 | 3,382 |  |
Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 461 | 340
Less: allowance for loan and lease losses | 461 |  |  | 340 | 340 |  |  | 474 | 340 | 474 | 461 | 340
Beginning balance |  |  |  | 340 |  |  |  | 474 | 340 | 474 |  |
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |  |
Recoveries |  |  |  |  |  |  |  |  | 0 | 0 |  |
Provision |  |  |  |  |  |  |  |  | 121 | (134) |  |
Ending balance | 461 |  |  |  | 340 |  |  |  | 461 | 340 |  |
Residential Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 20 | 28
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 1,663 | 698
Less: allowance for loan and lease losses | 1,683 |  |  | 726 | 726 |  |  | 761 | 726 | 761 | 1,683 | 726
Beginning balance |  |  |  | 726 |  |  |  | 761 | 726 | 761 |  |
Charge-offs |  |  |  |  |  |  |  |  | (62) | (361) |  |
Recoveries |  |  |  |  |  |  |  |  | 42 | 46 |  |
Provision |  |  |  |  |  |  |  |  | 977 | 280 |  |
Ending balance | 1,683 |  |  |  | 726 |  |  |  | 1,683 | 726 |  |
Commercial And Industrial [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 48 | 3
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 1,305 | 453
Less: allowance for loan and lease losses | 1,353 |  |  | 456 | 456 |  |  | 969 | 456 | 969 | 1,353 | 456
Beginning balance |  |  |  | 456 |  |  |  | 969 | 456 | 969 |  |
Charge-offs |  |  |  |  |  |  |  |  | (245) | (519) |  |
Recoveries |  |  |  |  |  |  |  |  | 294 | 82 |  |
Provision |  |  |  |  |  |  |  |  | 848 | (76) |  |
Ending balance | 1,353 |  |  |  | 456 |  |  |  | 1,353 | 456 |  |
Home Equity Lines of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 41 | 2
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 1,364 | 930
Less: allowance for loan and lease losses | 1,405 |  |  | 932 | 932 |  |  | 820 | 932 | 820 | 1,405 | 932
Beginning balance |  |  |  | 932 |  |  |  | 820 | 932 | 820 |  |
Charge-offs |  |  |  |  |  |  |  |  | (55) | (162) |  |
Recoveries |  |  |  |  |  |  |  |  | 84 | 32 |  |
Provision |  |  |  |  |  |  |  |  | 444 | 242 |  |
Ending balance | 1,405 |  |  |  | 932 |  |  |  | 1,405 | 932 |  |
Construction and Other [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 378 | 103
Less: allowance for loan and lease losses | 378 |  |  | 103 | 103 |  |  | 100 | 103 | 100 | 378 | 103
Beginning balance |  |  |  | 103 |  |  |  | 100 | 103 | 100 |  |
Charge-offs |  |  |  |  |  |  |  |  | 0 | 0 |  |
Recoveries |  |  |  |  |  |  |  |  | 157 | 74 |  |
Provision |  |  |  |  |  |  |  |  | 118 | (71) |  |
Ending balance | 378 |  |  |  | 103 |  |  |  | 378 | 103 |  |
Consumer Portfolio Segment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  |  |  |  |  |  |  |  | 20 | 28
Less: allowance for loan and lease losses | 20 |  |  | 28 | 28 |  |  | 127 | 28 | 127 | $ 20 | $ 28
Beginning balance |  |  |  | $ 28 |  |  |  | $ 127 | 28 | 127 |  |
Charge-offs |  |  |  |  |  |  |  |  | (405) | (735) |  |
Recoveries |  |  |  |  |  |  |  |  | 22 | 8 |  |
Provision |  |  |  |  |  |  |  |  | 375 | 628 |  |
Ending balance | $ 20 |  |  |  | $ 28 |  |  |  | $ 20 | $ 28 |  |

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- Definition Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts. + 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 (c)(4) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + 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 (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 2: 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 http://asc.fasb.org/extlink&oid=121614798&loc=d3e15032-111544 Reference 3: 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 http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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