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Note 5 - Allowance for Loan Losses, Nonperforming Assets and Impaired Loans (Details) - Allowance Roll-forward and Related Loan Balance by Portfolio Segments (USD $) In Thousands, unless otherwise specified | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  |  |  |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  | 12 Months Ended |  |  |  |  |  |
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2012 Real Estate Construction [Member] Beginning of Year [Member] | Dec. 31, 2011 Real Estate Construction [Member] Beginning of Year [Member] | Dec. 31, 2013 Real Estate Construction [Member] End of Year [Member] | Dec. 31, 2012 Real Estate Construction [Member] End of Year [Member] | Dec. 31, 2013 Real Estate Construction [Member] | Dec. 31, 2012 Real Estate Construction [Member] | Dec. 31, 2012 Consumer Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2011 Consumer Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2010 Consumer Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2013 Consumer Real Estate [Member] End of Year [Member] | Dec. 31, 2012 Consumer Real Estate [Member] End of Year [Member] | Dec. 31, 2011 Consumer Real Estate [Member] End of Year [Member] | Dec. 31, 2013 Consumer Real Estate [Member] | Dec. 31, 2012 Consumer Real Estate [Member] | Dec. 31, 2011 Consumer Real Estate [Member] | Dec. 31, 2012 Commercial Real Estate Loans [Member] Beginning of Year [Member] | Dec. 31, 2011 Commercial Real Estate Loans [Member] Beginning of Year [Member] | Dec. 31, 2010 Commercial Real Estate Loans [Member] Beginning of Year [Member] | Dec. 31, 2013 Commercial Real Estate Loans [Member] End of Year [Member] | Dec. 31, 2012 Commercial Real Estate Loans [Member] End of Year [Member] | Dec. 31, 2011 Commercial Real Estate Loans [Member] End of Year [Member] | Dec. 31, 2013 Commercial Real Estate Loans [Member] | Dec. 31, 2012 Commercial Real Estate Loans [Member] | Dec. 31, 2011 Commercial Real Estate Loans [Member] | Dec. 31, 2012 Commercial Non Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2011 Commercial Non Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2013 Commercial Non Real Estate [Member] End of Year [Member] | Dec. 31, 2012 Commercial Non Real Estate [Member] End of Year [Member] | Dec. 31, 2013 Commercial Non Real Estate [Member] | Dec. 31, 2012 Commercial Non Real Estate [Member] | Dec. 31, 2012 Public Sector and IDA [Member] Beginning of Year [Member] | Dec. 31, 2011 Public Sector and IDA [Member] Beginning of Year [Member] | Dec. 31, 2013 Public Sector and IDA [Member] End of Year [Member] | Dec. 31, 2012 Public Sector and IDA [Member] End of Year [Member] | Dec. 31, 2013 Public Sector and IDA [Member] | Dec. 31, 2012 Public Sector and IDA [Member] | Dec. 31, 2012 Consumer Non Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2011 Consumer Non Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2010 Consumer Non Real Estate [Member] Beginning of Year [Member] | Dec. 31, 2013 Consumer Non Real Estate [Member] End of Year [Member] | Dec. 31, 2012 Consumer Non Real Estate [Member] End of Year [Member] | Dec. 31, 2011 Consumer Non Real Estate [Member] End of Year [Member] | Dec. 31, 2013 Consumer Non Real Estate [Member] | Dec. 31, 2012 Consumer Non Real Estate [Member] | Dec. 31, 2011 Consumer Non Real Estate [Member] | Dec. 31, 2012 Unallocated [Member] Beginning of Year [Member] | Dec. 31, 2011 Unallocated [Member] Beginning of Year [Member] | Dec. 31, 2010 Unallocated [Member] Beginning of Year [Member] | Dec. 31, 2013 Unallocated [Member] End of Year [Member] | Dec. 31, 2012 Unallocated [Member] End of Year [Member] | Dec. 31, 2011 Unallocated [Member] End of Year [Member] | Dec. 31, 2013 Unallocated [Member] | Dec. 31, 2012 Unallocated [Member] | Dec. 31, 2011 Unallocated [Member] | Dec. 31, 2010 Commercial and Industrial [Member] Beginning of Year [Member] | Dec. 31, 2011 Commercial and Industrial [Member] End of Year [Member] | Dec. 31, 2011 Commercial and Industrial [Member] | Dec. 31, 2010 Construction, Development & Other Land [Member] Beginning of Year [Member] | Dec. 31, 2011 Construction, Development & Other Land [Member] End of Year [Member] | Dec. 31, 2011 Construction, Development & Other Land [Member] | Dec. 31, 2012 Beginning of Year [Member] | Dec. 31, 2011 Beginning of Year [Member] | Dec. 31, 2010 Beginning of Year [Member] | Dec. 31, 2013 End of Year [Member] | Dec. 31, 2012 End of Year [Member] | Dec. 31, 2011 End of Year [Member]
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of year | $ 8,349 |  |  |  | $ 1,070 | $ 1,079 | $ 863 | $ 1,070 | $ 1,070 |  | $ 2,263 | $ 1,245 | $ 1,059 | [1] | $ 1,697 | $ 2,263 | $ 1,052 | [1] | $ 2,263 |  |  |  | $ 3,442 | $ 3,515 | $ 4,033 | [1] | $ 3,685 | $ 3,442 | $ 4,511 | [1] | $ 3,442 |  |  |  | $ 959 | $ 1,473 | $ 989 | $ 959 | $ 959 |  | $ 142 | $ 232 | $ 132 | $ 142 | $ 142 |  | $ 424 | $ 403 | $ 586 | [1] | $ 576 | $ 424 | $ 401 | [1] | $ 424 |  |  |  | $ 49 | $ 121 | $ 129 | [1] | $ 285 | $ 49 | $ 121 | [1] | $ 49 |  |  |  | $ 1,108 | [1] | $ 1,035 | [1] |  |  | $ 749 | [1] | $ 948 | [1] |  |  | $ 8,349 | $ 8,068 | $ 7,664 | [1] | $ 8,227 | $ 8,349 | $ 8,068 | [1]
Loans charged off | (1,820) | (2,953) | (2,628) | [1] |  |  |  |  | (184) | (640) |  |  |  |  |  |  |  |  | (256) | (370) | (461) | [1] |  |  |  |  |  |  |  |  | (64) | (1,589) | (457) | [1] |  |  |  |  | (968) | (109) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (348) | (245) | (266) | [1] |  |  |  |  |  |  |  |  |  |  |  | [1] |  |  |  |  | (655) | [1] |  |  |  |  | (789) | [1] |  |  |  |  |  |  |  |
Recoveries of loans previously charged off | 167 | 100 | 83 | [1] |  |  |  |  | 44 | 13 |  |  |  |  |  |  |  |  | 1 | 8 | 14 | [1] |  |  |  |  |  |  |  |  | 25 |  |  | [1] |  |  |  |  | 18 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 79 | 77 | 68 | [1] |  |  |  |  |  |  |  |  |  |  |  | [1] |  |  |  |  | 1 | [1] |  |  |  |  |  | [1] |  |  |  |  |  |  |  |
Provision for loan losses | 1,531 | 3,134 | 2,949 | [1] |  |  |  |  | (67) | 618 |  |  |  |  |  |  |  |  | (311) | 1,380 | 440 | [1] |  |  |  |  |  |  |  |  | 282 | 1,516 | 935 | [1] |  |  |  |  | 980 | (407) |  |  |  |  | (10) | (90) |  |  |  |  |  |  |  |  | 421 | 189 | 13 | [1] |  |  |  |  |  |  |  |  | 236 | (72) | (8) | [1] |  |  |  |  | 581 | [1] |  |  |  |  | 988 | [1] |  |  |  |  |  |  |  |
Balance at end of year | $ 8,227 | $ 8,349 |  |  | $ 1,070 | $ 1,079 | $ 863 | $ 1,070 | $ 863 | $ 1,070 | $ 2,263 | $ 1,245 | $ 1,059 | [1] | $ 1,697 | $ 2,263 | $ 1,052 | [1] | $ 1,697 | $ 2,263 |  |  | $ 3,442 | $ 3,515 | $ 4,033 | [1] | $ 3,685 | $ 3,442 | $ 4,511 | [1] | $ 3,685 | $ 3,442 |  |  | $ 959 | $ 1,473 | $ 989 | $ 959 | $ 989 | $ 959 | $ 142 | $ 232 | $ 132 | $ 142 | $ 132 | $ 142 | $ 424 | $ 403 | $ 586 | [1] | $ 576 | $ 424 | $ 401 | [1] | $ 576 | $ 424 |  |  | $ 49 | $ 121 | $ 129 | [1] | $ 285 | $ 49 | $ 121 | [1] | $ 285 | $ 49 |  |  | $ 1,108 | [1] | $ 1,035 | [1] |  |  | $ 749 | [1] | $ 948 | [1] |  |  | $ 8,349 | $ 8,068 | $ 7,664 | [1] | $ 8,227 | $ 8,349 | $ 8,068 | [1]
[1] | Segments reported for December 31, 2011 are presented using the segmentation method in effect for 2011. The Company began reporting under revised segments in 2012.

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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=28368275&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=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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