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

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

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- Definition

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

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=82891408&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5074-111524

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Note 4 - Loans and Allowance for Loan Losses - Allowance for Loan Losses and the Recorded Investment of Loans Based On Impairment Method (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Collectively evaluated for impairment	$ 6,854		$ 4,718
Total ending allowance balance	6,952	$ 7,315	7,699	$ 6,934	$ 6,946	$ 6,648
Loans individually evaluated for impairment	17,689		22,709
Loans collectively evaluated for impairment	739,216		712,192
Total ending loans balance	756,905		734,901
Individually evaluated for impairment	98		2,981
Residential Portfolio Segment [Member]
Collectively evaluated for impairment	1,300		939
Total ending allowance balance	1,300	1,392	939	906	1,185	1,087
Loans individually evaluated for impairment	1,141		717
Loans collectively evaluated for impairment	303,396		285,305
Total ending loans balance	304,537		286,022
Individually evaluated for impairment
Commercial Real Estate Portfolio Segment [Member]
Collectively evaluated for impairment	2,716		1,780
Total ending allowance balance	2,813	2,729	4,315	3,464	1,995	1,959
Loans individually evaluated for impairment	7,262		13,111
Loans collectively evaluated for impairment	204,865		200,896
Total ending loans balance	212,127		214,007
Individually evaluated for impairment	97		2,535
Commercial and Industrial Portfolio Segment [Member]
Collectively evaluated for impairment	932		666
Total ending allowance balance	932	1,360	907	1,416	2,672	2,589
Loans individually evaluated for impairment	9,077		8,465
Loans collectively evaluated for impairment	93,873		92,124
Total ending loans balance	102,950		100,589
Individually evaluated for impairment			241
Consumer Portfolio Segment [Member]
Collectively evaluated for impairment	1,906		1,333
Total ending allowance balance	1,907	$ 1,834	1,538	$ 1,148	$ 1,094	$ 1,013
Loans individually evaluated for impairment	209		416
Loans collectively evaluated for impairment	137,082		133,867
Total ending loans balance	137,291		134,283
Individually evaluated for impairment	$ 1		$ 205