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Note 4 - Loans and Allowance for Loan Losses (Detail) - Recorded Investment of Residential and Consumer Loans (USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Automobile Loans [Member] | Performing Loans [Member] |  |
Consumer Loans | $ 41,424 | $ 45,677
Automobile Loans [Member] | Nonperforming Loans [Member] |  |
Consumer Loans | 84 | 25
Automobile Loans [Member] |  |
Consumer Loans | 41,508 | 45,702
Home Equity Loans [Member] | Performing Loans [Member] |  |
Consumer Loans | 18,763 | 20,502
Home Equity Loans [Member] | Nonperforming Loans [Member] |  |
Consumer Loans | 96 | 5
Home Equity Loans [Member] |  |
Consumer Loans | 18,859 | 20,507
Other Consumer Loans [Member] | Performing Loans [Member] |  |
Consumer Loans | 39,777 | 40,947
Other Consumer Loans [Member] | Nonperforming Loans [Member] |  |
Consumer Loans | 46 | 7
Other Consumer Loans [Member] |  |
Consumer Loans | 39,823 | 40,954
Residential Real Estate Loans [Member] | Performing Loans [Member] |  |
Consumer Loans | 226,104 | 235,515
Residential Real Estate Loans [Member] | Nonperforming Loans [Member] |  |
Consumer Loans | 3,645 | 2,975
Residential Real Estate Loans [Member] |  |
Consumer Loans | 229,749 | 238,490
Consumer Loans [Member] | Performing Loans [Member] |  |
Consumer Loans | 326,068 | 342,641
Consumer Loans [Member] | Nonperforming Loans [Member] |  |
Consumer Loans | 3,871 | 3,012
Consumer Loans [Member] |  |
Consumer Loans | $ 329,939 | $ 345,653

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- Definition Amount before allowance of consumer loans, including, but not limited to, mortgage, home equity, vehicles, credit card, installment, and lease financing. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes 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(a),(b)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: 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 3: 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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph a, b -Article 9 + Details
Name: | us-gaap_LoansAndLeasesReceivableConsumer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant