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Note 3 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans - Allowance for Loan Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Balance | $ 7,925 | $ 8,300 | $ 8,300
Charge-offs | (139) | (143) | (819)
Recoveries | 77 | 45 | 287
Provision for (recovery of) loan losses | (472) | 59 | 157
Balance | 7,391 | 8,261 | 7,925
Real Estate Construction Portfolio Segment[Member] |  |  |
Balance | 337 | 438 | 438
Charge-offs | 0 |  |
Recoveries | 0 | 0 | 0
Provision for (recovery of) loan losses | (42) | (61) | (101)
Balance | 295 | 377 | 337
Consumer Real Estate Portfolio Segment [Member] |  |  |
Balance | 2,027 | 1,830 | 1,830
Charge-offs |  |  | (146)
Recoveries |  |  | 1
Provision for (recovery of) loan losses | (98) | (84) | 342
Balance | 1,929 | 1,746 | 2,027
Commercial Real Estate Portfolio Segment [Member] |  |  |
Balance | 3,044 | 3,738 | 3,738
Charge-offs |  | (30) | (139)
Recoveries | 12 | 12 | 131
Provision for (recovery of) loan losses | (266) | (103) | (686)
Balance | 2,790 | 3,617 | 3,044
Commercial Non Real Estate Segment [Member] |  |  |
Balance | 1,072 | 1,063 | 1,063
Charge-offs |  |  | (82)
Recoveries | 7 | 4 | 23
Provision for (recovery of) loan losses | (163) | 75 | 68
Balance | 916 | 1,142 | 1,072
Public Sector and IDA Portfolio Segment[Member] |  |  |
Balance | 419 | 330 | 330
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Provision for (recovery of) loan losses | 13 | 87 | 89
Balance | 432 | 417 | 419
Consumer Non Real Estate Portfolio Segment [Member] |  |  |
Balance | 707 | 644 | 644
Charge-offs | (139) | (113) | (452)
Recoveries | 58 | 29 | 132
Provision for (recovery of) loan losses | 54 | 56 | 383
Balance | 680 | 616 | 707
Unallocated Financing Receivables [Member] |  |  |
Balance | 319 | 257 | 257
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 | 0
Provision for (recovery of) loan losses | 30 | 89 | 62
Balance | $ 349 | $ 346 | $ 319

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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + 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=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of direct write-downs of financing receivables charged against the allowance. + 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=84173941&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 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 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 http://asc.fasb.org/extlink&oid=84173941&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 http://asc.fasb.org/extlink&oid=82894903&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 http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: 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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