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Note 6 - Loans and Allowance for Credit Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2014 | Sep. 30, 2013 | Dec. 31, 2013
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | $ 39,186 | $ 37,824 | $ 32,946
Recorded Investment With No Allowance | 16,440 | 16,135 | 9,892
Recorded Investment With Allowance | 20,780 | 21,389 | 22,754
Total Recorded Investment | 37,220 | 37,524 | 32,646
Related Allowance | 8,013 | 7,160 | 6,520
Commercial Loan [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 12,051 | 10,184 | 8,193
Average Recorded Investment- Year To Date | 228 | (7) | 53
Commercial Loan [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 12,132 | 9,402 | 8,877
Average Recorded Investment- Year To Date | 231 | 78 | 131
Commercial Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 16,531 | 9,607 | 6,779
Recorded Investment With No Allowance | 950 | 2,442 | 2,327
Recorded Investment With Allowance | 14,481 | 7,165 | 4,452
Total Recorded Investment | 15,431 | 9,607 | 6,779
Related Allowance | 4,409 | 3,019 | 1,323
Commercial Real Estate Investment [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 5,975 | 5,934 | 6,183
Average Recorded Investment- Year To Date | (71) | 62 | 38
Commercial Real Estate Investment [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 5,873 | 5,719 | 5,755
Average Recorded Investment- Year To Date | 7 | 137 | 175
Commercial Real Estate Investment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 6,284 | 6,464 | 5,902
Recorded Investment With No Allowance | 4,839 | 1,451 | 1,322
Recorded Investment With Allowance | 1,070 | 5,013 | 4,580
Total Recorded Investment | 5,909 | 6,464 | 5,902
Related Allowance | 578 | 1,097 | 1,098
Commercial Real Estate Owner Occupied [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 3,366 | 6,432 | 5,939
Average Recorded Investment- Year To Date | 6 | (43) | 52
Commercial Real Estate Owner Occupied [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 4,877 | 6,493 | 6,285
Average Recorded Investment- Year To Date | 6 | 56 | 108
Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 3,502 | 6,426 | 5,452
Recorded Investment With No Allowance | 391 | 5,530 | 111
Recorded Investment With Allowance | 3,111 | 896 | 5,341
Total Recorded Investment | 3,502 | 6,426 | 5,452
Related Allowance | 1,330 | 823 | 1,853
Residential Mortgage [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 500 | 843 | 891
Average Recorded Investment- Year To Date |  |  | 2
Residential Mortgage [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 665 | 769 | 792
Average Recorded Investment- Year To Date |  |  | 2
Residential Mortgage [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 350 | 895 | 887
Recorded Investment With No Allowance | 350 | 783 | 774
Recorded Investment With Allowance |  | 112 | 113
Total Recorded Investment | 350 | 895 | 887
Related Allowance |  | 27 | 27
Home Equity Line of Credit [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 496 | 461 | 567
Average Recorded Investment- Year To Date | 4 | 2 | 2
Home Equity Line of Credit [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 553 | 479 | 508
Average Recorded Investment- Year To Date | 4 | 2 | 4
Home Equity Line of Credit [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 588 | 511 | 623
Recorded Investment With No Allowance | 125 | 37 |
Recorded Investment With Allowance | 463 | 474 | 623
Total Recorded Investment | 588 | 511 | 623
Related Allowance | 218 | 373 | 526
Consumer, Other [Member] | Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date |  | 28 | 58
Average Recorded Investment- Year To Date |  | 1 | 1
Consumer, Other [Member] | Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 33 | 25 | 34
Average Recorded Investment- Year To Date |  | 1 | 2
Consumer, Other [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance |  | 45 | 70
Recorded Investment With Allowance |  | 45 | 70
Total Recorded Investment |  | 45 | 70
Related Allowance |  | 45 | 68
Quarter to Date [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 11,429 | 14,033 | 13,405
Average Recorded Investment- Year To Date | 159 | 41 | 44
Quarter to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 33,817 | 37,915 | 35,236
Average Recorded Investment- Year To Date | 326 | 56 | 192
Year to Date [Member] | Construction Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 12,004 | 18,315 | 17,298
Average Recorded Investment- Year To Date | 711 | 125 | 169
Year to Date [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Average Recorded Investment- Quarter To Date | 36,137 | 41,202 | 39,549
Average Recorded Investment- Year To Date | 959 | 399 | 591
Construction Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Contractual Principal Balance | 11,931 | 13,876 | 13,233
Recorded Investment With No Allowance | 9,785 | 5,892 | 5,358
Recorded Investment With Allowance | 1,655 | 7,684 | 7,575
Total Recorded Investment | 11,440 | 13,576 | 12,933
Related Allowance | $ 1,478 | $ 1,776 | $ 1,625

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