Note L - Segment Information (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	For the Three Months Ended June 30, 2023												For the Three Months Ended June 30, 2022
	Electronic Instruments			Merchant Investment			Holding Company			Consolidated			Electronic Instruments			Merchant Investment		Holding Company			Consolidated
REVENUES	$	403		$	—		$	—		$	403		$	370		$	—	$	—		$	370
Interest income, net		—			255			20			275			—			—		9			9
Investment income (loss)		—			—			43			43			—			—		(2,373	)		(2,373	)
Costs and expenses:
Manufacturing cost of sales		(208	)		—			—			(208	)		(227	)		—		—			(227	)
Engineering, selling and administrative		(173	)		(88	)		(372	)		(633	)		(165	)		—		(458	)		(623	)
Other expense, net		—			—			(12	)		(12	)		—			—		1			1
INCOME (LOSS) FROM OPERATIONS	$	22		$	167		$	(321	)	$	(132	)	$	(22	)	$	—	$	(2,821	)	$	(2,843	)

	For the Six Months Ended June 30, 2023												For the Six Months Ended June 30, 2022
	Electronic Instruments			Merchant Investment			Holding Company			Consolidated			Electronic Instruments			Merchant Investment		Holding Company			Consolidated
REVENUES	$	844		$	—		$	—		$	844		$	787		$	—	$	—		$	787
Interest income, net		—			255			218			473			—			—		5			5
Investment income (loss)		—			—			388			388			—			—		(2,328	)		(2,328	)
Costs and expenses:
Manufacturing cost of sales		(400	)		—			—			(400	)		(469	)		—		—			(469	)
Engineering, selling and administrative		(350	)		(88	)		(753	)		(1,191	)		(332	)		—		(1,313	)		(1,645	)
Other expense, net		—			—			(24	)		(24	)		—			—		2			2
INCOME (LOSS) FROM OPERATIONS	$	94		$	167		$	(171	)	$	90		$	(14	)	$	—	$	(3,634	)	$	(3,648	)