Note 3 - Discontinued Operations (Details Textual) - Spinoff [Member] - Mtron Industries Inc [Member] - USD ($) $ in Thousands		12 Months Ended
	Oct. 07, 2022	Dec. 31, 2023	Dec. 31, 2022
Write Off of Intercompany Receivables	$ 4,439
Spin Off Costs		$ 56	$ 638
Excess Separation Costs		$ 28	219
Separation Costs, Net.			$ 419