Note A - Basis of Presentation (Details Textual) - USD ($)		3 Months Ended		9 Months Ended
	Oct. 07, 2022	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Mtron Industries Inc [Member]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners	0.00%
Spinoff [Member] | Mtron Industries Inc [Member]
Percentage of Shares Distribution Under Spinoff	100.00%
Right to Receive Common Stock Share for Each Share (in shares)	0.5
Excess Separation Costs		$ 28,000
Spin Off Costs			$ 232,000	$ 55,000	$ 575,000