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Note 5 - Loans and Allowance for Credit Losses - Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Unpaid Contractual Principal Balance | $ 24,925 | $ 44,735 | $ 28,468
Recorded Investment With No Allowance | 8,779 | 11,896 | 11,361
Recorded Investment With Allowance | 13,477 | 28,695 | 14,438
Total Recorded Investment | 22,256 | 40,591 | 25,799
Related Allowance | 5,268 | 4,548 | 5,599
Quarter to Date [Member] |  |  |
Average Recorded Investment | 24,030 | 36,055 | 37,052
Interest Income Recognized | 90 | 74 | 135
Year to Date [Member] |  |  |
Average Recorded Investment | 24,030 | 36,055 | 37,938
Interest Income Recognized | 90 | 74 | 406
Commercial Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 8,249 | 17,305 | 8,296
Recorded Investment With No Allowance | 2,843 | 1,165 | 2,532
Recorded Investment With Allowance | 2,737 | 11,996 | 3,095
Total Recorded Investment | 5,580 | 13,161 | 5,627
Related Allowance | 3,030 | 2,922 | 2,671
Commercial Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 5,604 | 12,920 | 12,620
Interest Income Recognized | 42 | 16 | 79
Commercial Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 5,604 | 12,920 | 12,755
Interest Income Recognized | 42 | 16 | 191
Income Producing Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 10,019 | 19,905 | 14,936
Recorded Investment With No Allowance | 702 | 5,143 | 5,048
Recorded Investment With Allowance | 9,317 | 14,762 | 9,888
Total Recorded Investment | 10,019 | 19,905 | 14,936
Related Allowance | 1,488 | 868 | 1,943
Income Producing Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 12,478 | 13,012 | 16,742
Interest Income Recognized | 48 | 58 | 54
Income Producing Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 12,478 | 13,012 | 17,533
Interest Income Recognized | 48 | 58 | 198
Owner Occupied Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 2,998 | 1,724 | 2,483
Recorded Investment With No Allowance | 2,207 | 461 | 1,691
Recorded Investment With Allowance | 791 | 1,263 | 792
Total Recorded Investment | 2,998 | 1,724 | 2,483
Related Allowance | 350 | 360 | 350
Owner Occupied Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 2,741 | 1,739 | 2,233
Interest Income Recognized |  |  |
Owner Occupied Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 2,741 | 1,739 | 2,106
Interest Income Recognized |  |  | 13
Residential Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 310 | 257 | 555
Recorded Investment With No Allowance | 310 | 257 | 555
Recorded Investment With Allowance |  |  |
Total Recorded Investment | 310 | 257 | 555
Related Allowance |  |  |
Residential Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 433 | 293 | 246
Interest Income Recognized |  |  |
Residential Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 433 | 293 | 249
Interest Income Recognized |  |  |
Construction Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 3,255 | 5,422 | 2,072
Recorded Investment With No Allowance | 2,717 | 4,870 | 1,535
Recorded Investment With Allowance | 538 | 552 | 537
Total Recorded Investment | 3,255 | 5,422 | 2,072
Related Allowance | 350 | 310 | 522
Construction Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 2,664 | 7,938 | 5,091
Interest Income Recognized |  |  |
Construction Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 2,664 | 7,938 | 5,174
Interest Income Recognized |  |  |
Home Equity Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance |  | 122 |
Recorded Investment With No Allowance |  |  |
Recorded Investment With Allowance |  | 122 |
Total Recorded Investment |  | 122 |
Related Allowance |  | 88 |
Home Equity Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment |  | 142 | 78
Interest Income Recognized |  |  |
Home Equity Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment |  | 142 | 89
Interest Income Recognized |  |  |
Other Consumer Portfolio Segment [Member] |  |  |
Unpaid Contractual Principal Balance | 94 |  | 126
Recorded Investment With No Allowance |  |  |
Recorded Investment With Allowance | 94 |  | 126
Total Recorded Investment | 94 |  | 126
Related Allowance | 50 |  | 113
Other Consumer Portfolio Segment [Member] | Quarter to Date [Member] |  |  |
Average Recorded Investment | 110 | 11 | 42
Interest Income Recognized |  |  | 2
Other Consumer Portfolio Segment [Member] | Year to Date [Member] |  |  |
Average Recorded Investment | 110 | 11 | 32
Interest Income Recognized |  |  | $ 4

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- Definition Amount of interest income (expense) recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References No definition available. + Details
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- Definition Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5258-111524 + Details
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