Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(11))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Definition

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
-Glossary Recorded Investment
-URI http://asc.fasb.org/extlink&oid=65880944

Reference 2: 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=66008989&loc=d3e5111-111524

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

+ References

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- Definition

Reflects the percentage derived from dividing impaired loans on which interest has ceased to be accrued by total loans.

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 10
-Section S99
-Paragraph 6
-Subparagraph (SX 210.5-04(c)(Schedule III))
-URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5162-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65884687&loc=d3e4437-111522

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28)
-URI http://asc.fasb.org/extlink&oid=6590653&loc=d3e638233-123024

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Note 4 - Loans Held for Investment - Non-Accrual Loans (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Loans held for investment, nonaccrual basis	$ 3,051,000	$ 3,197,000
Percentage of total loans held for investment, net	0.40%	0.50%
Loans over 90 days past due, still accruing		$ 115,000
Total assets	990,701,914	946,282,972
Nonperforming Financial Instruments [Member]
Loans over 90 days past due, still accruing		115,000
Other real estate owned	3,229,000	6,125,000
Total assets	$ 6,280,000	$ 9,437,000
Performing Financial Instruments [Member]
Percentage of total loans held for investment, net	0.10%	0.10%	0.30%	1.10%	1.70%
Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	$ 1,667,000	$ 1,695,000
Troubled Debt Restructurings [Member]
Loans held for investment, nonaccrual basis	1,384,000	1,502,000
Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis	962,000	159,000
Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis	422,000	1,343,000
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans over 90 days past due, still accruing		115,000
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	773,000	635,000
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis	161,000
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis	163,000	809,000
Residential Portfolio Segment [Member] \| Lots and Raw Land [Member]
Loans over 90 days past due, still accruing
Residential Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis
Residential Portfolio Segment [Member] \| Construction Loans [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	482,000	594,000
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis	652,000
Commercial Portfolio Segment [Member] \| Real Estate Loan [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis		534,000
Commercial Portfolio Segment [Member] \| Lots and Raw Land [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Commercial Construction [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	72,000
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis	170,000
Commercial Portfolio Segment [Member] \| Lease Receivables [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Lease Receivables [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis		95,000
Commercial Portfolio Segment [Member] \| Construction Loans [Member]
Loans over 90 days past due, still accruing
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis
Commercial Portfolio Segment [Member] \| Construction Loans [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis
Consumer Portfolio Segment [Member] \| Real Estate Loan [Member]
Loans over 90 days past due, still accruing
Consumer Portfolio Segment [Member] \| Real Estate Loan [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	94,000	148,000
Consumer Portfolio Segment [Member] \| Real Estate Loan [Member] \| Troubled Debt Restructurings [Member] \| Nonperforming Financial Instruments [Member]
Loans held for investment, nonaccrual basis	149,000	159,000
Consumer Portfolio Segment [Member] \| Lots and Raw Land [Member]
Loans over 90 days past due, still accruing
Consumer Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	80,000	140,000
Consumer Portfolio Segment [Member] \| Lots and Raw Land [Member] \| Troubled Debt Restructurings [Member] \| Performing Financial Instruments [Member]
Loans held for investment, nonaccrual basis	89,000
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans over 90 days past due, still accruing
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis	166,000	81,000
Consumer Portfolio Segment [Member] \| Other Loans [Member]
Loans over 90 days past due, still accruing
Consumer Portfolio Segment [Member] \| Other Loans [Member] \| Non-TDR Loans [Member]
Loans held for investment, nonaccrual basis		2,000
Consumer Portfolio Segment [Member] \| Construction Loans [Member]
Loans over 90 days past due, still accruing