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Note 4 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses and the Recorded Investment of Loans (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 2,477		$ 2,107	$ 1,973
Collectively evaluated for impairment	3,991		4,798
Total ending allowance balance	6,468	6,672	6,905	7,527	6,847	7,344
Loans:
Loans individually evaluated for impairment	15,402		17,401
Loans collectively evaluated for impairment	536,043		540,887
Total ending loans balance	551,445		558,288
Residential Portfolio Segment [Member] | Evaluated for Impairment [Member]
Loans:
Total ending loans balance	220,290		226,022
Residential Portfolio Segment [Member] | Allowance for Loan and Lease Losses [Member]
Ending allowance balance attributable to loans:
Total ending allowance balance	1,192		1,329
Residential Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	123		128
Collectively evaluated for impairment	1,069		1,201
Total ending allowance balance	1,192	1,314	1,329	1,443	1,491	1,730
Loans:
Loans individually evaluated for impairment	916		827
Loans collectively evaluated for impairment	219,374		225,195
Total ending loans balance	220,290		226,022
Commercial Real Estate Portfolio Segment [Member] | Evaluated for Impairment [Member]
Loans:
Total ending loans balance	174,299		175,010
Commercial Real Estate Portfolio Segment [Member] | Allowance for Loan and Lease Losses [Member]
Ending allowance balance attributable to loans:
Total ending allowance balance	3,034		3,946
Commercial Real Estate Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	1,476		1,979
Collectively evaluated for impairment	1,558		1,967
Total ending allowance balance	3,034	3,744	3,946	4,369	3,423	3,623
Loans:
Loans individually evaluated for impairment	10,968		16,354
Loans collectively evaluated for impairment	163,331		158,656
Commercial and Industrial [Member] | Evaluated for Impairment [Member]
Loans:
Total ending loans balance	58,299		57,239
Commercial and Industrial [Member] | Allowance for Loan and Lease Losses [Member]
Ending allowance balance attributable to loans:
Total ending allowance balance	1,342		783
Commercial and Industrial [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	878
Collectively evaluated for impairment	464		783
Total ending allowance balance	1,342	761	783	653	623	636
Loans:
Loans individually evaluated for impairment	3,518
Loans collectively evaluated for impairment	54,781		57,239
Total ending loans balance	58,299		57,239
Consumer Portfolio Segment [Member] | Evaluated for Impairment [Member]
Loans:
Total ending loans balance	98,557		100,017
Consumer Portfolio Segment [Member] | Allowance for Loan and Lease Losses [Member]
Ending allowance balance attributable to loans:
Total ending allowance balance	900		847
Consumer Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Collectively evaluated for impairment	900		847
Total ending allowance balance	900	853	847	1,062	1,310	1,355
Loans:
Loans individually evaluated for impairment			220
Loans collectively evaluated for impairment	98,557		99,797
Evaluated for Impairment [Member]
Loans:
Total ending loans balance	551,445		558,288
Allowance for Loan and Lease Losses [Member]
Ending allowance balance attributable to loans:
Total ending allowance balance	$ 6,468		$ 6,905

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A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

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The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

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The balance of financing receivables that were collectively evaluated for impairment.

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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

+ References

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