Note 6 - Loans Receivable and Allowance for Loan Losses (Details) - Past Due Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	$ 11,855	$ 1,681
Loans receivable, 60 to 89 days past due	1,867	14,062
Loans receivable, greater than 90 days	24,969	21,440
Loans receivable, total past due	38,691	37,183
Loans receivable, current	750,419	745,196
Loans receivable	789,110	782,379
Loans receivable > 90 days and accruing	5,013	0
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	6,874	713
Loans receivable, 60 to 89 days past due	27	11,034
Loans receivable, greater than 90 days	18,726	13,979
Loans receivable, total past due	25,627	25,726
Loans receivable, current	338,770	353,533
Loans receivable	364,397	379,259
Loans receivable > 90 days and accruing	5,013
Commercial Real Estate Construction Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	275	0
Loans receivable, 60 to 89 days past due	0	0
Loans receivable, greater than 90 days	155	377
Loans receivable, total past due	430	377
Loans receivable, current	34,808	29,484
Loans receivable	35,238	29,861
Loans receivable > 90 days and accruing	0	0
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	937	193
Loans receivable, 60 to 89 days past due	1,631	2,186
Loans receivable, greater than 90 days	3,203	4,349
Loans receivable, total past due	5,771	6,728
Loans receivable, current	154,048	138,385
Loans receivable	159,819	145,113
Loans receivable > 90 days and accruing	0	0
Owner Occupied Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	3,622	626
Loans receivable, 60 to 89 days past due	209	812
Loans receivable, greater than 90 days	2,459	2,306
Loans receivable, total past due	6,290	3,744
Loans receivable, current	182,493	184,281
Loans receivable	188,783	188,025
Loans receivable > 90 days and accruing	0	0
Consumer Other Financing Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	147	149
Loans receivable, 60 to 89 days past due	0	30
Loans receivable, greater than 90 days	426	429
Loans receivable, total past due	573	608
Loans receivable, current	39,895	39,105
Loans receivable	40,468	39,713
Loans receivable > 90 days and accruing	0	0
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans receivable, 30-59 days past due	0	0
Loans receivable, 60 to 89 days past due	0	0
Loans receivable, greater than 90 days	0	0
Loans receivable, total past due	0	0
Loans receivable, current	405	408
Loans receivable	405	408
Loans receivable > 90 days and accruing	$ 0	$ 0

Financing receivables that are less than 60 days past due but more than 29 days past due.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

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Financing receivables that are less than 90 days past due but more than 59 days past due.

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Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5111-111524

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Financing receivables that are current.

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Financing receivables that are equal to or greater than 90 days past due.

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Recorded Investment in financing receivables that are past due at the balance sheet date.

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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. 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 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

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