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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 | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016
Provision for loan losses | $ 464 | $ 654 | $ 523 | $ 857 | $ 1,650
Balance | 8,372 | 8,195 | 8,372 | 8,195 | 8,300
Balance |  |  | 8,300 | 8,297 | 8,297
Charge-offs |  |  | (552) | (1,051) | (1,806)
Recoveries |  |  | 101 | 92 | 159
Real Estate Construction Portfolio Segment[Member] |  |  |  |  |
Provision for loan losses |  |  | (87) | (32) | (109)
Balance | 351 | 515 | 351 | 515 | 438
Balance |  |  | 438 | 576 | 576
Charge-offs |  |  | 0 | (29) | (29)
Recoveries |  |  | 0 | 0 | 0
Consumer Real Estate Portfolio Segment [Member] |  |  |  |  |
Provision for loan losses |  |  | 340 | (2) | 95
Balance | 2,033 | 1,776 | 2,033 | 1,776 | 1,830
Balance |  |  | 1,830 | 1,866 | 1,866
Charge-offs |  |  | (138) | (89) | (133)
Recoveries |  |  | 1 | 1 | 2
Commercial Real Estate Portfolio Segment [Member] |  |  |  |  |
Provision for loan losses |  |  | 116 | (574) | 34
Balance | 3,768 | 3,469 | 3,768 | 3,469 | 3,738
Balance |  |  | 3,738 | 4,109 | 4,109
Charge-offs |  |  | (122) | (125) | (488)
Recoveries |  |  | 36 | 59 | 83
Commercial Non Real Estate Segment [Member] |  |  |  |  |
Provision for loan losses |  |  | 103 | 1,537 | 1,281
Balance | 1,103 | 1,485 | 1,103 | 1,485 | 1,063
Balance |  |  | 1,063 | 655 | 655
Charge-offs |  |  | (73) | (708) | (883)
Recoveries |  |  | 10 | 1 | 10
Public Sector and IDA Portfolio Segment[Member] |  |  |  |  |
Provision for loan losses |  |  | 83 | (55) | (106)
Balance | 413 | 381 | 413 | 381 | 330
Balance |  |  | 330 | 436 | 436
Charge-offs |  |  | 0 | 0 | 0
Recoveries |  |  | 0 | 0 | 0
Consumer Non Real Estate Portfolio Segment [Member] |  |  |  |  |
Provision for loan losses |  |  | 218 | (3) | 226
Balance | 697 | 555 | 697 | 555 | 644
Balance |  |  | 644 | 627 | 627
Charge-offs |  |  | (219) | (100) | (273)
Recoveries |  |  | 54 | 31 | 64
Unallocated Financing Receivables [Member] |  |  |  |  |
Provision for loan losses |  |  | (250) | (14) | 229
Balance | $ 7 | $ 14 | 7 | 14 | 257
Balance |  |  | 257 | 28 | 28
Charge-offs |  |  | 0 | 0 | 0
Recoveries |  |  | $ 0 | $ 0 | $ 0

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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/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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 3: http://www.xbrl.org/2003/role/presentationRef -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 4: http://www.xbrl.org/2003/role/presentationRef -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 Reference 5: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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