Note D - Loans and Allowance for Loan Losses - Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Loans	$ 769,319	$ 734,901
Less: Allowance for loan losses	(7,499)	(7,699)
Loans, net	761,820	727,202
Residential Portfolio Segment [Member]
Loans	309,163	286,022
Commercial Real Estate Portfolio Segment [Member]
Loans	213,446	214,007
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member]
Loans	73,573	77,605
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Nonowner Occupied [Member]
Loans	101,571	90,532
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Loans	38,302	45,870
Commercial and Industrial Portfolio Segment [Member]
Loans	107,089	100,589
Consumer Portfolio Segment [Member]
Loans	139,621	134,283
Consumer Portfolio Segment [Member] \| Automobile Loan [Member]
Loans	68,626	59,772
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member]
Loans	21,431	20,861
Consumer Portfolio Segment [Member] \| Other Consumer Loans [Member]
Loans	$ 49,564	$ 53,650

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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