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Note 3 - Loans and Allowance for Loan Losses (Detail) - TDR's Pre-Modification and Post-Modification (Performing to Modified Terms [Member], USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Owner-occupied |  |
Pre-Modification of Recorded Investment | $ 10,936 | $ 1,585
Post-Modification of Recorded Investment | 10,877 | 1,487
Reduction of Principal and Interest Payments [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Owner-occupied |  |
Pre-Modification of Recorded Investment | 4,266 |
Post-Modification of Recorded Investment | 4,222 |
Reduction of Principal and Interest Payments [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |
Owner-occupied |  |
Pre-Modification of Recorded Investment | 686 |
Post-Modification of Recorded Investment | 671 |
Interest Only Payments [Member] | Commercial Real Estate Nonowner Occupied [Member] |  |
Owner-occupied |  |
Pre-Modification of Recorded Investment | 5,984 | 400
Post-Modification of Recorded Investment | 5,984 | 400
Rate Reduction [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Owner-occupied |  |
Pre-Modification of Recorded Investment |  | 959
Post-Modification of Recorded Investment |  | 868
Maturity Extension at Lower Stated Rate Than Market Rate [Member] | Commercial Real Estate Owner Occupied [Member] |  |
Owner-occupied |  |
Pre-Modification of Recorded Investment |  | 226
Post-Modification of Recorded Investment |  | $ 219

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- Definition Amount of investment in financing receivables (after modification) modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
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- Definition Amount of investment in financing receivables (before modification) modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524 + Details
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