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Note 4 - Loans and Allowance for Credit Losses (Details) - Impaired Loans (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 32,946	$ 48,322
Recorded Investment With No Allowance	9,892	30,760
Recorded Investment With Allowance	22,754	15,237
Total Recorded Investment	32,646	45,997
Related Allowance	6,520	8,114
Commercial Loan [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	6,779	9,461
Recorded Investment With No Allowance	2,327	5,767
Recorded Investment With Allowance	4,452	3,481
Total Recorded Investment	6,779	9,248
Related Allowance	1,323	2,158
Commercial Loan [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	8,193	8,372
Interest Income Recognized	53	151
Commercial Loan [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	8,877	7,772
Interest Income Recognized	131	245
Commercial Real Estate Investment [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	5,902	5,600
Recorded Investment With No Allowance	1,322	3,830
Recorded Investment With Allowance	4,580	1,770
Total Recorded Investment	5,902	5,600
Related Allowance	1,098	1,201
Commercial Real Estate Investment [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,183	5,695
Interest Income Recognized	38	38
Commercial Real Estate Investment [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,755	6,609
Interest Income Recognized	175	152
Commercial Real Estate Owner Occupied [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	5,452	6,659
Recorded Investment With No Allowance	111	5,602
Recorded Investment With Allowance	5,341	1,057
Total Recorded Investment	5,452	6,659
Related Allowance	1,853	753
Commercial Real Estate Owner Occupied [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,939	4,517
Interest Income Recognized	52	213
Commercial Real Estate Owner Occupied [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	6,285	2,746
Interest Income Recognized	108	252
Residential Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	887	699
Recorded Investment With No Allowance	774	699
Recorded Investment With Allowance	113
Total Recorded Investment	887	699
Related Allowance	27
Residential Mortgage [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	891	706
Interest Income Recognized	2
Residential Mortgage [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	792	714
Interest Income Recognized	2
Home Equity Line of Credit [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	623	513
Recorded Investment With No Allowance		134
Recorded Investment With Allowance	623	379
Total Recorded Investment	623	513
Related Allowance	526	243
Home Equity Line of Credit [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	567	592
Interest Income Recognized	2	1
Home Equity Line of Credit [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	508	534
Interest Income Recognized	4	9
Consumer, Other [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	70	43
Recorded Investment With No Allowance		1
Recorded Investment With Allowance	70	42
Total Recorded Investment	70	43
Related Allowance	68	41
Consumer, Other [Member] | Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	58	25
Interest Income Recognized	1	2
Consumer, Other [Member] | Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	34	17
Interest Income Recognized	2	2
Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	13,233	25,347
Recorded Investment With No Allowance	5,358	14,727
Recorded Investment With Allowance	7,575	8,508
Total Recorded Investment	12,933	23,235
Related Allowance	1,625	3,718
Quarter to Date [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	13,405	24,859
Interest Income Recognized	44	63
Quarter to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	35,236	44,766
Interest Income Recognized	192	468
Year to Date [Member] | Construction Loans [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	17,298	26,430
Interest Income Recognized	169	202
Year to Date [Member]
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	39,549	44,822
Interest Income Recognized	$ 591	$ 862

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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=28368275&loc=d3e5212-111524



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ 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)(2)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

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Amount of allowance for credit losses related to recorded investment.

+ 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 (a)(3)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without 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 (a)(4)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=d3e5212-111524

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Amount of investment in impaired financing receivables for which there is no 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 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

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Amount of investment in impaired financing receivables for which there is 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 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28368275&loc=SL6953550-111524

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