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Note 3 - Loans and Allowance for Loan Losses (Detail) - Aging of the Recorded Investment of Past Due Loans (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
30-59 Days Past Due | $ 8,563 | $ 5,733
60-89 Days Past Due | 1,481 | 1,738
90 or More Days Past Due | 3,906 | 3,125
Total Past Due | 13,950 | 10,596
Loans Not Past Due | 544,338 | 587,712
Total | 558,288 | 598,308
Residential Real Estate Loans [Member] |  |
30-59 Days Past Due | 5,525 | 3,731
60-89 Days Past Due | 1,033 | 1,144
90 or More Days Past Due | 2,797 | 2,975
Total Past Due | 9,355 | 7,850
Loans Not Past Due | 216,667 | 230,640
Total | 226,022 | 238,490
Commercial Real Estate Owner Occupied [Member] |  |
30-59 Days Past Due | 753 | 182
60-89 Days Past Due | 111 |
90 or More Days Past Due | 675 | 125
Total Past Due | 1,539 | 307
Loans Not Past Due | 103,303 | 129,057
Total | 104,842 | 129,364
Commercial Real Estate Nonowner Occupied [Member] |  |
60-89 Days Past Due |  | 232
90 or More Days Past Due | 352 |
Total Past Due | 352 | 232
Loans Not Past Due | 52,440 | 56,388
Total | 52,792 | 56,620
Construction [Member] |  |
30-59 Days Past Due |  | 204
60-89 Days Past Due | 0 | 0
90 or More Days Past Due | 0 | 0
Total Past Due |  | 204
Loans Not Past Due | 17,376 | 21,267
Total | 17,376 | 21,471
Commercial and Industrial [Member] |  |
30-59 Days Past Due | 202 | 171
60-89 Days Past Due |  | 14
90 or More Days Past Due | 0 | 0
Total Past Due | 202 | 185
Loans Not Past Due | 57,037 | 45,015
Total | 57,239 | 45,200
Automobile Loans [Member] |  |
30-59 Days Past Due | 905 | 864
60-89 Days Past Due | 138 | 110
90 or More Days Past Due | 13 | 13
Total Past Due | 1,056 | 987
Loans Not Past Due | 40,112 | 44,715
Total | 41,168 | 45,702
Home Equity Loans [Member] |  |
30-59 Days Past Due | 112 | 75
60-89 Days Past Due | 37 | 76
90 or More Days Past Due | 62 | 5
Total Past Due | 211 | 156
Loans Not Past Due | 18,121 | 20,351
Total | 18,332 | 20,507
Other Consumer Loans [Member] |  |
30-59 Days Past Due | 1,066 | 506
60-89 Days Past Due | 162 | 162
90 or More Days Past Due | 7 | 7
Total Past Due | 1,235 | 675
Loans Not Past Due | 39,282 | 40,279
Total | $ 40,517 | $ 40,954

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- Definition Financing receivables that are less than 60 days past due but more than 29 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Financing receivables that are less than 90 days past due but more than 59 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Financing receivables that are equal to or greater than 90 days past due. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953401-111524 + Details
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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher OTS -Name Federal Regulation (FR) -Number Title 12 -Section 563c.102 -Paragraph 8 -Subparagraph e -Chapter V -Subsection I -LegacyDoc This is a non-GAAP reference that was included in the 2009 taxonomy. It will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-DEP -Paragraph 116 -IssueDate 2006-05-01 -Chapter 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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=7512638&loc=d3e5074-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6375948&loc=d3e4428-111522 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 13 -Subparagraph e -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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