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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 | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015 | Dec. 31, 2015 | Mar. 31, 2016
Commercial Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | $ 133 | $ 141 | $ 141 |
Charge-offs |  |  |  |  |  |
Recoveries |  |  | 19 |  | 61 |
Provision (reduction in reserve) for loan losses |  |  | 57 |  | (69) |
Ending balance | $ 209 |  | 209 |  | 133 |
Ending balance, individually evaluated for impairment | 64 |  | 64 |  | 80 |
Ending balance, collectively evaluated for impairment | 145 |  | 145 |  | 53 |
Total loans | 38,160 |  | 38,160 |  | 29,377 |
Ending balance, individually evaluated for impairment | 427 |  | 427 |  | 444 |
Ending balance, collectively evaluated for impairment | 37,733 |  | 37,733 |  | 28,933 |
Ending balance collectively evaluated for impairment | 37,733 |  | 37,733 |  | 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 |  |  |  |  |  |
Ending balance collectively evaluated for impairment |  |  |  |  |  |
Commercial Portfolio Segment [Member] | FUSB and ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 133 | 141 | 141 |
Charge-offs |  |  |  |  |  |
Recoveries |  |  | 19 |  | 61 |
Provision (reduction in reserve) for loan losses |  |  | 57 |  | (69) |
Ending balance | 209 |  | 209 |  | 133 |
Ending balance, individually evaluated for impairment | 64 |  | 64 |  | 80 |
Ending balance, collectively evaluated for impairment | 145 |  | 145 |  | 53 |
Total loans | 38,160 |  | 38,160 |  | 29,377 |
Ending balance, individually evaluated for impairment | 427 |  | 427 |  | 444 |
Ending balance, collectively evaluated for impairment | 37,733 |  | 37,733 |  | 28,933 |
Ending balance collectively evaluated for impairment | 37,733 |  | 37,733 |  | 28,933 |
Commercial Real Estate Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | 1,118 | 2,810 | 2,810 |
Charge-offs |  |  |  |  | (767) |
Recoveries |  |  | 230 |  | 12 |
Provision (reduction in reserve) for loan losses |  |  | (577) |  | (937) |
Ending balance | 771 |  | 771 |  | 1,118 |
Ending balance, individually evaluated for impairment | 291 |  | 291 |  | 230 |
Ending balance, collectively evaluated for impairment | 480 |  | 480 |  | 888 |
Total loans | 136,009 |  | 136,009 |  | 107,670 |
Ending balance, individually evaluated for impairment | 1,934 |  | 1,934 |  | 2,018 |
Ending balance, collectively evaluated for impairment | 134,075 |  | 134,075 |  | 105,652 |
Ending balance collectively evaluated for impairment | 134,075 |  | 134,075 |  | 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 |  |  |  |  |  |
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 |  |  |  |  | (767) |
Recoveries |  |  | 230 |  | 12 |
Provision (reduction in reserve) for loan losses |  |  | (577) |  | (937) |
Ending balance | 771 |  | 771 |  | 1,118 |
Ending balance, individually evaluated for impairment | 291 |  | 291 |  | 230 |
Ending balance, collectively evaluated for impairment | 480 |  | 480 |  | 888 |
Total loans | 136,009 |  | 136,009 |  | 107,670 |
Ending balance, individually evaluated for impairment | 1,934 |  | 1,934 |  | 2,018 |
Ending balance, collectively evaluated for impairment | 134,075 |  | 134,075 |  | 105,652 |
Ending balance collectively evaluated for impairment | 134,075 |  | 134,075 |  | 105,652 |
Consumer Portfolio Segment [Member] | FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | 28 | 114 | 114 |
Charge-offs |  |  | (27) |  | (17) |
Recoveries |  |  | 34 |  | 70 |
Provision (reduction in reserve) for loan losses |  |  | (18) |  | (139) |
Ending balance | 17 |  | 17 |  | 28 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 17 |  | 17 |  | 28 |
Total loans | 6,366 |  | 6,366 |  | 7,057 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 6,366 |  | 6,366 |  | 7,057 |
Ending balance collectively evaluated for impairment | 6,366 |  | 6,366 |  | 7,057 |
Consumer Portfolio Segment [Member] | ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 2,202 | 2,336 | 2,336 |
Charge-offs |  |  | (1,511) |  | (2,552) |
Recoveries |  |  | 351 |  | 712 |
Provision (reduction in reserve) for loan losses |  |  | 1,229 |  | 1,706 |
Ending balance | 2,271 |  | 2,271 |  | 2,202 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,271 |  | 2,271 |  | 2,202 |
Total loans | 80,886 |  | 80,886 |  | 76,131 | $ 80,886
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 80,886 |  | 80,886 |  | 76,131 |
Ending balance collectively evaluated for impairment | 80,886 |  | 80,886 |  | 76,131 |
Consumer Portfolio Segment [Member] | FUSB and ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 2,230 | 2,450 | 2,450 |
Charge-offs |  |  | (1,538) |  | (2,569) |
Recoveries |  |  | 385 |  | 782 |
Provision (reduction in reserve) for loan losses |  |  | 1,211 |  | 1,567 |
Ending balance | 2,288 |  | 2,288 |  | 2,230 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,288 |  | 2,288 |  | 2,230 |
Total loans | 87,252 |  | 87,252 |  | 83,188 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 87,252 |  | 87,252 |  | 83,188 |
Ending balance collectively evaluated for impairment | 87,252 |  | 87,252 |  | 83,188 |
Consumer Portfolio Segment [Member] |  |  |  |  |  |
Total loans | 87,252 |  | 87,252 |  | 83,188 |
Residential Real Estate [Member | FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | 36 | 421 | 421 |
Charge-offs |  |  | (7) |  | (68) |
Recoveries |  |  | 10 |  | 111 |
Provision (reduction in reserve) for loan losses |  |  | 96 |  | (428) |
Ending balance | 135 |  | 135 |  | 36 |
Ending balance, individually evaluated for impairment | 5 |  | 5 |  |  |
Ending balance, collectively evaluated for impairment | 130 |  | 130 |  | 36 |
Total loans | 33,326 |  | 33,326 |  | 30,730 |
Ending balance, individually evaluated for impairment | 251 |  | 251 |  | 252 |
Ending balance, collectively evaluated for impairment | 33,075 |  | 33,075 |  | 30,478 |
Ending balance collectively evaluated for impairment | 33,075 |  | 33,075 |  | 30,478 |
Residential Real Estate [Member | ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 250 | 346 | 346 |
Charge-offs |  |  | (21) |  | (187) |
Recoveries |  |  | 29 |  | 22 |
Provision (reduction in reserve) for loan losses |  |  | (76) |  | 69 |
Ending balance | 182 |  | 182 |  | 250 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 182 |  | 182 |  | 250 |
Total loans | 15,430 |  | 15,430 |  | 17,233 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 15,430 |  | 15,430 |  | 17,233 |
Ending balance collectively evaluated for impairment | 15,430 |  | 15,430 |  | 17,233 |
Residential Real Estate [Member | FUSB and ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 286 | 767 | 767 |
Charge-offs |  |  | (28) |  | (255) |
Recoveries |  |  | 39 |  | 133 |
Provision (reduction in reserve) for loan losses |  |  | 20 |  | (359) |
Ending balance | 317 |  | 317 |  | 286 |
Ending balance, individually evaluated for impairment | 5 |  | 5 |  |  |
Ending balance, collectively evaluated for impairment | 312 |  | 312 |  | 286 |
Total loans | 48,756 |  | 48,756 |  | 47,963 |
Ending balance, individually evaluated for impairment | 251 |  | 251 |  | 252 |
Ending balance, collectively evaluated for impairment | 48,505 |  | 48,505 |  | 47,711 |
Ending balance collectively evaluated for impairment | 48,505 |  | 48,505 |  | 47,711 |
Other Loans [Member] | FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | 14 |  |  |
Charge-offs |  |  |  |  |  |
Recoveries |  |  |  |  |  |
Provision (reduction in reserve) for loan losses |  |  | (8) |  | 14 |
Ending balance | 6 |  | 6 |  | 14 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 6 |  | 6 |  | 14 |
Total loans | 364 |  | 364 |  | 379 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 364 |  | 364 |  | 379 |
Ending balance collectively evaluated for impairment | 364 |  | 364 |  | 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 |  |  |  |  |  |
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 |  |  | (8) |  | 14 |
Ending balance | 6 |  | 6 |  | 14 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 6 |  | 6 |  | 14 |
Total loans | 364 |  | 364 |  | 379 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 364 |  | 364 |  | 379 |
Ending balance collectively evaluated for impairment | 364 |  | 364 |  | 379 |
Other Loans [Member] |  |  |  |  |  |
Total loans | 364 |  | 364 |  | 379 |
FUSB [Member] |  |  |  |  |  |
Beginning balance |  |  | 1,329 | 3,486 | 3,486 |
Charge-offs |  |  | (34) |  | (852) |
Recoveries |  |  | 293 |  | 254 |
Provision (reduction in reserve) for loan losses |  |  | (450) |  | (1,559) |
Ending balance | 1,138 |  | 1,138 |  | 1,329 |
Ending balance, individually evaluated for impairment | 360 |  | 360 |  | 310 |
Ending balance, collectively evaluated for impairment | 778 |  | 778 |  | 1,019 |
Total loans | 214,225 |  | 214,225 |  | 175,213 |
Ending balance, individually evaluated for impairment | 2,612 |  | 2,612 |  | 2,714 |
Ending balance, collectively evaluated for impairment | 211,613 |  | 211,613 |  | 172,499 |
Ending balance collectively evaluated for impairment | 211,613 |  | 211,613 |  | 172,499 |
ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 2,452 | 2,682 | 2,682 |
Charge-offs |  |  | (1,532) |  | (2,739) |
Recoveries |  |  | 380 |  | 734 |
Provision (reduction in reserve) for loan losses |  |  | 1,153 |  | 1,775 |
Ending balance | 2,453 |  | 2,453 |  | 2,452 |
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 2,453 |  | 2,453 |  | 2,452 |
Total loans | 96,316 |  | 96,316 |  | 93,364 | $ 96,316
Ending balance, individually evaluated for impairment |  |  |  |  |  |
Ending balance, collectively evaluated for impairment | 96,316 |  | 96,316 |  | 93,364 |
Ending balance collectively evaluated for impairment | 96,316 |  | 96,316 |  | 93,364 |
FUSB and ALC [Member] |  |  |  |  |  |
Beginning balance |  |  | 3,781 | 6,168 | 6,168 |
Charge-offs |  |  | (1,566) |  | (3,591) |
Recoveries |  |  | 673 |  | 988 |
Provision (reduction in reserve) for loan losses |  |  | 703 |  | 216 |
Ending balance | 3,591 |  | 3,591 |  | 3,781 |
Ending balance, individually evaluated for impairment | 360 |  | 360 |  | 310 |
Ending balance, collectively evaluated for impairment | 3,231 |  | 3,231 |  | 3,471 |
Total loans | 310,541 |  | 310,541 |  | 268,577 |
Ending balance, individually evaluated for impairment | 2,612 |  | 2,612 |  | 2,714 |
Ending balance, collectively evaluated for impairment | 307,929 |  | 307,929 |  | 265,863 |
Ending balance collectively evaluated for impairment | 307,929 |  | 307,929 |  | 265,863 |
Beginning balance |  |  | 3,781 |  |  |
Provision (reduction in reserve) for loan losses | 536 | $ 45 | 703 | $ (121) |  |
Ending balance | 3,591 |  | 3,591 |  | 3,781 |
Total loans | $ 310,541 |  | $ 310,541 |  | $ 268,577 |

X
- 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 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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