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Note 7 - Loans And Related Allowance For Loan Losses (Details) - Allowance for Loan Losses (USD $) | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2012 | Dec. 31, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2011
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | $ 2,540,000 |  |  | $ 3,688,000 |  |  |
Collectively evaluated for impairment | 5,281,000 |  |  | 4,091,000 |  |  |
Allowance balance | 7,821,000 |  |  | 7,779,000 |  |  |
Commercial and Industrial [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | 195,000 |  |  | 1,189,000 |  |  |
Collectively evaluated for impairment | 593,000 |  |  | 543,000 |  |  |
Allowance balance | 788,000 |  |  | 1,700,000 |  |  |
Commercial and Industrial [Member] | End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 788,000 | 1,704,000 | 1,704,000 | 1,732,000 |  |  |
Commercial and Industrial [Member] | Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 1,732,000 | 875,000 | 1,626,000 | 1,296,000
Charge-offs | 0 | (60,000) | (88,000) | (325,000) |  |  |
Recoveries |  | 1,000 | 70,000 | 92,000 |  |  |
Provision | (87,000) | 137,000 | 426,000 | (711,000) |  |  |
Real Estate Construction [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | 859,000 |  |  | 933,000 |  |  |
Collectively evaluated for impairment | 440,000 |  |  | 190,000 |  |  |
Real Estate Construction [Member] | End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 1,299,000 | 445,000 | 445,000 | 1,123,000 |  |  |
Real Estate Construction [Member] | Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 1,123,000 | 1,191,000 | 504,000 | 438,000
Charge-offs |  | 0 | 0 | (190,000) |  |  |
Recoveries | 0 | 0 | 0 | 33,000 |  |  |
Provision | 108,000 | (59,000) | 7,000 | 333,000 |  |  |
Residential Real Estate Mortgage [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | 896,000 |  |  | 600,000 |  |  |
Collectively evaluated for impairment | 2,743,000 |  |  | 2,272,000 |  |  |
Allowance balance | 3,600,000 |  |  | 2,900,000 |  |  |
Residential Real Estate Mortgage [Member] | End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 3,639,000 | 2,953,000 | 2,953,000 | 2,872,000 |  |  |
Residential Real Estate Mortgage [Member] | Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 2,872,000 | 3,626,000 | 4,109,000 | 3,731,000
Charge-offs | (87,000) | (570,000) | (668,000) | (432,000) |  |  |
Recoveries | 2,000 | 12,000 | 15,000 | 73,000 |  |  |
Provision | 98,000 | (598,000) | (125,000) | 1,126,000 |  |  |
Commercial Real Estate Mortgage [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | 590,000 |  |  | 960,000 |  |  |
Collectively evaluated for impairment | 1,483,000 |  |  | 1,031,000 |  |  |
Commercial Real Estate Mortgage [Member] | End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 2,073,000 | 2,055,000 | 2,055,000 | 1,991,000 |  |  |
Commercial Real Estate Mortgage [Member] | Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 1,991,000 | 2,005,000 | 1,492,000 | 1,306,000
Charge-offs | 0 | (70,000) | (123,000) | 0 |  |  |
Recoveries | 0 | 0 | 0 | 46,000 |  |  |
Provision | 68,000 | 633,000 | 872,000 | 36,000 |  |  |
Consumer Installment [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Individually evaluated for impairment | 0 |  |  | 6,000 |  |  |
Collectively evaluated for impairment | 22,000 |  |  | 55,000 |  |  |
Consumer Installment [Member] | End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 22,000 | 16,000 | 16,000 | 61,000 |  |  |
Consumer Installment [Member] | Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 61,000 | 52,000 | 21,000 | 48,000
Charge-offs | (5,000) | (40,000) | (62,000) | (41,000) |  |  |
Recoveries | 9,000 | 5,000 | 17,000 | 20,000 |  |  |
Provision | (34,000) | 30,000 | 13,000 | (18,000) |  |  |
End of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance | 7,821,000 | 7,173,000 | 7,173,000 | 7,779,000 |  |  |
Beginning of Period [Member] |  |  |  |  |  |  |
Ending allowance balance attributable to loans: |  |  |  |  |  |  |
Allowance balance |  |  |  | 7,779,000 | 7,749,000 | 7,752,000 | 6,819,000
Charge-offs | (92,000) | (740,000) | (941,000) | (988,000) |  |  |
Recoveries | 11,000 | 18,000 | 102,000 | 264,000 |  |  |
Provision | $ 153,000 | $ 143,000 | $ 1,193,000 | $ 766,000 |  |  |

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- Definition Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 + 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 No definition available. + 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=28368275&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible 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 (g) -URI http://asc.fasb.org/extlink&oid=28368275&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 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://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph d -Article 9 Reference 3: 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 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section L -Subsection 1 + Details
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- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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