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Note 6 - Loans and Allowance for Loan Losses - Changes in Allowance for Loan Losses and Recorded Investment in Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015
Commercial Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |
Beginning balance |  |  | $ 133 | $ 141 | $ 141
Charge-offs |  |  | (1) |  |
Recoveries |  |  | 28 |  | 61
Provision (reduction in reserve) for loan losses |  |  | (31) |  | (69)
Ending balance | $ 129 |  | 129 |  | 133
Ending balance, individually evaluated for impairment |  |  |  |  | 80
Ending balance, collectively evaluated for impairment | 129 |  | 129 |  | 53
Total loans | 54,459 |  | 54,459 |  | 29,377
Ending balance, individually evaluated for impairment |  |  |  |  | 444
Ending balance, collectively evaluated for impairment | 54,459 |  | 54,459 |  | 28,933
Commercial Portfolio Segment [Member] | ALC [Member] |  |  |  |  |
Beginning balance |  |  |  |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  |  |  |
Ending balance |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Total loans |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Commercial Portfolio Segment [Member] | FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 133 | 141 | 141
Charge-offs |  |  | (1) |  |
Recoveries |  |  | 28 |  | 61
Provision (reduction in reserve) for loan losses |  |  | (31) |  | (69)
Ending balance | 129 |  | 129 |  | 133
Ending balance, individually evaluated for impairment |  |  |  |  | 80
Ending balance, collectively evaluated for impairment | 129 |  | 129 |  | 53
Total loans | 54,459 |  | 54,459 |  | 29,377
Ending balance, individually evaluated for impairment |  |  |  |  | 444
Ending balance, collectively evaluated for impairment | 54,459 |  | 54,459 |  | 28,933
Commercial Real Estate Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |
Beginning balance |  |  | 1,118 | 2,810 | 2,810
Charge-offs |  |  | (40) |  | (767)
Recoveries |  |  | 234 |  | 12
Provision (reduction in reserve) for loan losses |  |  | (378) |  | (937)
Ending balance | 934 |  | 934 |  | 1,118
Ending balance, individually evaluated for impairment | 413 |  | 413 |  | 230
Ending balance, collectively evaluated for impairment | 521 |  | 521 |  | 888
Total loans | 139,455 |  | 139,455 |  | 107,670
Ending balance, individually evaluated for impairment | 2,107 |  | 2,107 |  | 2,018
Ending balance, collectively evaluated for impairment | 137,348 |  | 137,348 |  | 105,652
Commercial Real Estate Portfolio Segment [Member] | ALC [Member] |  |  |  |  |
Beginning balance |  |  |  |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  |  |  |
Ending balance |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Total loans |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Commercial Real Estate Portfolio Segment [Member] | FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 1,118 | 2,810 | 2,810
Charge-offs |  |  | (40) |  | (767)
Recoveries |  |  | 234 |  | 12
Provision (reduction in reserve) for loan losses |  |  | (378) |  | (937)
Ending balance | 934 |  | 934 |  | 1,118
Ending balance, individually evaluated for impairment | 413 |  | 413 |  | 230
Ending balance, collectively evaluated for impairment | 521 |  | 521 |  | 888
Total loans | 139,455 |  | 139,455 |  | 107,670
Ending balance, individually evaluated for impairment | 2,107 |  | 2,107 |  | 2,018
Ending balance, collectively evaluated for impairment | 137,348 |  | 137,348 |  | 105,652
Consumer Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |
Beginning balance |  |  | 27 | 114 | 114
Charge-offs |  |  | (30) |  | (17)
Recoveries |  |  | 40 |  | 70
Provision (reduction in reserve) for loan losses |  |  | (26) |  | (139)
Ending balance | 11 |  | 11 |  | 27
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 11 |  | 11 |  | 28
Total loans | 6,289 |  | 6,289 |  | 7,057
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 6,289 |  | 6,289 |  | 7,057
Consumer Portfolio Segment [Member] | ALC [Member] |  |  |  |  |
Beginning balance |  |  | 2,201 | 2,336 | 2,336
Charge-offs |  |  | (2,218) |  | (2,552)
Recoveries |  |  | 500 |  | 712
Provision (reduction in reserve) for loan losses |  |  | 1,808 |  | 1,706
Ending balance | 2,291 |  | 2,291 |  | 2,201
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,291 |  | 2,291 |  | 2,202
Total loans | 80,915 |  | 80,915 |  | 76,131
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 80,915 |  | 80,915 |  | 76,131
Consumer Portfolio Segment [Member] | FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 2,228 | 2,450 | 2,450
Charge-offs |  |  | (2,248) |  | (2,569)
Recoveries |  |  | 540 |  | 782
Provision (reduction in reserve) for loan losses |  |  | 1,782 |  | 1,567
Ending balance | 2,302 |  | 2,302 |  | 2,228
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,302 |  | 2,302 |  | 2,230
Total loans | 87,204 |  | 87,204 |  | 83,188
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 87,204 |  | 87,204 |  | 83,188
Consumer Portfolio Segment [Member] |  |  |  |  |
Total loans | 87,204 |  | 87,204 |  | 83,188
Residential Real Estate [Member | FUSB [Member] |  |  |  |  |
Beginning balance |  |  | 37 | 421 | 421
Charge-offs |  |  | (10) |  | (68)
Recoveries |  |  | 16 |  | 111
Provision (reduction in reserve) for loan losses |  |  | 64 |  | (428)
Ending balance | 107 |  | 107 |  | 37
Ending balance, individually evaluated for impairment | 5 |  | 5 |  |
Ending balance, collectively evaluated for impairment | 102 |  | 102 |  | 36
Total loans | 32,559 |  | 32,559 |  | 30,730
Ending balance, individually evaluated for impairment |  |  |  |  | 252
Ending balance, collectively evaluated for impairment | 32,559 |  | 32,559 |  | 30,478
Residential Real Estate [Member | ALC [Member] |  |  |  |  |
Beginning balance |  |  | 251 | 346 | 346
Charge-offs |  |  | (49) |  | (187)
Recoveries |  |  | 34 |  | 22
Provision (reduction in reserve) for loan losses |  |  | (75) |  | 69
Ending balance | 161 |  | 161 |  | 251
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 161 |  | 161 |  | 250
Total loans | 14,462 |  | 14,462 |  | 17,233
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 14,462 |  | 14,462 |  | 17,233
Residential Real Estate [Member | FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 288 | 767 | 767
Charge-offs |  |  | (59) |  | (255)
Recoveries |  |  | 50 |  | 133
Provision (reduction in reserve) for loan losses |  |  | (11) |  | (359)
Ending balance | 268 |  | 268 |  | 288
Ending balance, individually evaluated for impairment | 5 |  | 5 |  |
Ending balance, collectively evaluated for impairment | 263 |  | 263 |  | 286
Total loans | 47,021 |  | 47,021 |  | 47,963
Ending balance, individually evaluated for impairment |  |  |  |  | 252
Ending balance, collectively evaluated for impairment | 47,021 |  | 47,021 |  | 47,711
Other Loans [Member] | FUSB [Member] |  |  |  |  |
Beginning balance |  |  | 14 |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  | 21 |  | 14
Ending balance | 35 |  | 35 |  | 14
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 35 |  | 35 |  | 14
Total loans | 46 |  | 46 |  | 379
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 46 |  | 46 |  | 379
Other Loans [Member] | ALC [Member] |  |  |  |  |
Beginning balance |  |  |  |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  |  |  |
Ending balance |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Total loans |  |  |  |  |
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment |  |  |  |  |
Other Loans [Member] | FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 14 |  |
Charge-offs |  |  |  |  |
Recoveries |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  | 21 |  | 14
Ending balance | 35 |  | 35 |  | 14
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 35 |  | 35 |  | 14
Total loans | 46 |  | 46 |  | 379
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 46 |  | 46 |  | 379
Other Loans [Member] |  |  |  |  |
Total loans | 46 |  | 46 |  | 379
FUSB [Member] |  |  |  |  |
Beginning balance |  |  | 1,329 | 3,486 | 3,486
Charge-offs |  |  | (81) |  | (852)
Recoveries |  |  | 318 |  | 254
Provision (reduction in reserve) for loan losses |  |  | (350) |  | (1,559)
Ending balance | 1,216 |  | 1,216 |  | 1,329
Ending balance, individually evaluated for impairment | 418 |  | 418 |  | 310
Ending balance, collectively evaluated for impairment | 798 |  | 798 |  | 1,019
Total loans | 232,808 |  | 232,808 |  | 175,213
Ending balance, individually evaluated for impairment | 2,107 |  | 2,107 |  | 2,714
Ending balance, collectively evaluated for impairment | 230,701 |  | 230,701 |  | 172,499
ALC [Member] |  |  |  |  |
Beginning balance |  |  | 2,452 | 2,682 | 2,682
Charge-offs |  |  | (2,267) |  | (2,739)
Recoveries |  |  | 534 |  | 734
Provision (reduction in reserve) for loan losses |  |  | 1,733 |  | 1,775
Ending balance | 2,452 |  | 2,452 |  | 2,452
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,452 |  | 2,452 |  | 2,452
Total loans | 95,377 |  | 95,377 |  | 93,364
Ending balance, individually evaluated for impairment |  |  |  |  |
Ending balance, collectively evaluated for impairment | 95,377 |  | 95,377 |  | 93,364
FUSB and ALC [Member] |  |  |  |  |
Beginning balance |  |  | 3,781 | 6,168 | 6,168
Charge-offs |  |  | (2,348) |  | (3,591)
Recoveries |  |  | 852 |  | 988
Provision (reduction in reserve) for loan losses |  |  | 1,383 |  | 216
Ending balance | 3,668 |  | 3,668 |  | 3,781
Ending balance, individually evaluated for impairment | 418 |  | 418 |  | 310
Ending balance, collectively evaluated for impairment | 3,250 |  | 3,250 |  | 3,471
Total loans | 328,185 |  | 328,185 |  | 268,577
Ending balance, individually evaluated for impairment | 2,107 |  | 2,107 |  | 2,714
Ending balance, collectively evaluated for impairment | 326,078 |  | 326,078 |  | 265,863
Beginning balance |  |  | 3,781 |  |
Provision (reduction in reserve) for loan losses | 680 | $ (78) | 1,383 | $ (199) |
Ending balance | 3,668 |  | 3,668 |  | 3,781
Total loans | $ 328,185 |  | $ 328,185 |  | $ 268,577

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- Definition Represents the amount of provision (reduction in reserve) for loan losses during the period. + References No definition available. + Details
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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68075217&loc=SL9156395-115594 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5074-111524 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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://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=66008989&loc=SL6953423-111524 + Details
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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://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=66008989&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + 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 (h) -URI http://asc.fasb.org/extlink&oid=66008989&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=66008989&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=66008989&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=6379141&loc=d3e15032-111544 + Details
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