Number of financing receivables that have been modified by troubled debt restructurings.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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Note C - Loans and Allowance for Loan Losses - TDRs Pre-modification and Post-modification (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Dec. 31, 2017 USD ($)
Number of Loans	2	0	2
Performing Financial Instruments [Member]
Pre-modification recorded investment	$ 1,235		$ 1,409
Post-modification recorded investment	1,235		1,409
Nonperforming Financial Instruments [Member]
Pre-modification recorded investment
Post-modification recorded investment
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Reduction of Principal and Interest Payments [Member]
Number of Loans	1
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Reduction of Principal and Interest Payments [Member] \| Performing Financial Instruments [Member]
Pre-modification recorded investment	$ 1,036
Post-modification recorded investment	1,036
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Reduction of Principal and Interest Payments [Member] \| Nonperforming Financial Instruments [Member]
Pre-modification recorded investment
Post-modification recorded investment
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Only Payments [Member]
Number of Loans			1
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Only Payments [Member] \| Performing Financial Instruments [Member]
Pre-modification recorded investment			$ 997
Post-modification recorded investment			997
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Only Payments [Member] \| Nonperforming Financial Instruments [Member]
Pre-modification recorded investment
Post-modification recorded investment
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Rate Below Market Reduction [Member]
Number of Loans			1
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Rate Below Market Reduction [Member] \| Performing Financial Instruments [Member]
Pre-modification recorded investment			$ 412
Post-modification recorded investment			412
Commercial Real Estate Portfolio Segment [Member] \| Commercial Real Estate Owner Occupied [Member] \| Interest Rate Below Market Reduction [Member] \| Nonperforming Financial Instruments [Member]
Pre-modification recorded investment
Post-modification recorded investment
Commercial and Industrial Portfolio Segment [Member] \| Reduction of Principal and Interest Payments [Member]
Number of Loans	1
Commercial and Industrial Portfolio Segment [Member] \| Reduction of Principal and Interest Payments [Member] \| Performing Financial Instruments [Member]
Pre-modification recorded investment	$ 199
Post-modification recorded investment	199
Commercial and Industrial Portfolio Segment [Member] \| Reduction of Principal and Interest Payments [Member] \| Nonperforming Financial Instruments [Member]
Pre-modification recorded investment
Post-modification recorded investment