Note N - Condensed Parent Company Only Financial Information - Condensed Statements of Cash Flows (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income	$ 1,679,000	$ 629,000	$ 2,758,000
Income (loss) from other investments	(168,000)	(274,000)	42,000
Gain from sale of securities	147,000		134,000
Net cash provided by operating activities	4,149,000	4,274,000	4,957,000
Redemption of equity securities		125,145
Net cash provided by investing activities	38,211,000	20,764,000	20,266,000
Retirement of common stock		1,907,000	502,000
Dividends paid	148,000	101,000	51,000
Net cash used in financing activities	(30,127,000)	(33,128,000)	(41,058,000)
Net increase (decrease) in cash	12,233,000	(8,090,000)	(15,835,000)
Cash and cash equivalents, beginning of year	17,191,000	25,281,000	41,116,000
Cash and cash equivalents, end of year	29,424,000	17,191,000	25,281,000
Parent Company [Member]
Net income	1,679,000	629,000	2,758,000
Income (loss) from other investments	166,000	274,000	(42,000)
Undistributed income of subsidiaries	(1,240,000)	(112,000)	(942,000)
Gain from sale of securities		(17,000)
Other assets			(20,000)
Net cash provided by operating activities	605,000	774,000	1,754,000
Redemption of equity securities		125,000
Net cash provided by investing activities		125,000
Retirement of common stock		(1,907,000)	(502,000)
Dividends paid	(148,000)	(101,000)	(51,000)
Net cash used in financing activities	(148,000)	(2,008,000)	(553,000)
Net increase (decrease) in cash	457,000	(1,109,000)	1,201,000
Cash and cash equivalents, beginning of year	283,000	1,392,000	191,000
Cash and cash equivalents, end of year	$ 740,000	$ 283,000	$ 1,392,000