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Note 8 - Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Beginning Balance | $ 122,391 | $ 123,279
Provision/(reversal) for possible credit losses |  | (3,000)
Charge-offs | (1,231) | (19)
Recoveries | 1,395 | 1,824
Net (charge-offs)/recoveries | 164 | 1,805
Ending Balance | 122,555 | 122,084
Reserve for impaired loans | 1,414 | 1,502
Reserve for non-impaired loans | 121,141 | 120,582
Reserve for off-balance sheet credit commitments | 3,850 | 4,588
Commercial Portfolio Segment [Member] |  |
Beginning Balance | 54,978 | 49,796
Provision/(reversal) for possible credit losses | 962 | 3,907
Charge-offs | (1,231) | (19)
Recoveries | 41 | 913
Net (charge-offs)/recoveries | (1,190) | 894
Ending Balance | 54,750 | 54,597
Reserve for impaired loans | 498 | 11
Reserve for non-impaired loans | 54,252 | 54,586
Reserve for off-balance sheet credit commitments | 1,759 | 2,747
Real Estate Construction Portfolio Segment [Member] |  |
Beginning Balance | 19,626 | 24,838
Provision/(reversal) for possible credit losses | 53 | (3,018)
Charge-offs |  |
Recoveries | 1,044 | 44
Net (charge-offs)/recoveries | 1,044 | 44
Ending Balance | 20,723 | 21,864
Reserve for impaired loans |  |
Reserve for non-impaired loans | 20,723 | 21,864
Reserve for off-balance sheet credit commitments | 1,668 | 1,515
Commercial Real Estate Portfolio Segment [Member] |  |
Beginning Balance | 33,487 | 37,610
Provision/(reversal) for possible credit losses | (566) | (4,163)
Charge-offs |  |
Recoveries | 152 | 783
Net (charge-offs)/recoveries | 152 | 783
Ending Balance | 33,073 | 34,230
Reserve for impaired loans | 667 | 1,145
Reserve for non-impaired loans | 32,406 | 33,085
Reserve for off-balance sheet credit commitments | 146 | 138
Residential Mortgage and Equity Lines Portfolio Segment [Member] |  |
Beginning Balance | 14,282 | 11,013
Provision/(reversal) for possible credit losses | (465) | 275
Charge-offs |  |
Recoveries | 158 | 84
Net (charge-offs)/recoveries | 158 | 84
Ending Balance | 13,975 | 11,372
Reserve for impaired loans | 249 | 346
Reserve for non-impaired loans | 13,726 | 11,026
Reserve for off-balance sheet credit commitments | 275 | 182
Installment and Other Loans [Member ] |  |
Beginning Balance | 18 | 22
Provision/(reversal) for possible credit losses | 16 | (1)
Charge-offs |  |
Recoveries |  |
Net (charge-offs)/recoveries |  |
Ending Balance | 34 | 21
Reserve for impaired loans |  |
Reserve for non-impaired loans | 34 | 21
Reserve for off-balance sheet credit commitments | $ 2 | $ 6

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- Definition Financing Receivable, Allowance For Credit Losses, Net Charge-Offs + References No definition available. + Details
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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + 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)(1) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118955202&loc=SL82895884-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 79 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922352-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919249-210447 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)(4) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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