Note 3 - Segment Information (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Segment Reporting [Table Text Block]

	Three Months Ended June 30, 2026
	Electronic Instruments		Merchant Investment		Corporate			Consolidated
Revenues:
Net sales	$	750	$	—	$	—		$	750
Net investment income		—		239		173			412
Net losses		—		—		(9	)		(9	)
Total revenues		750		239		164			1,153
Less:
Manufacturing cost of sales		381		—		—			381
Engineering		77		—		—			77
Commissions		18		—		—			18
Sales and marketing		59		—		—			59
Accounting		—		—		99			99
Compensation		56		—		337			393
Corporation allocations (a)		12		168		(180	)		—
Other segment items (b)		119		34		420			573
Engineering, selling and administrative		341		202		676			1,219
Total expenses		722		202		676			1,600
Segment profit (loss)	$	28	$	37	$	(512	)	$	(447	)
Reconciliation of Segment profit (loss) to Income (loss) before income taxes
Adjustments and reconciling items									—
Loss before income taxes								$	(447	)

	Three Months Ended June 30, 2025
	Electronic Instruments		Merchant Investment		Corporate			Consolidated
Revenues:
Net sales	$	491	$	—	$	—		$	491
Net investment income		—		262		166			428
Net gains		—		—		5			5
Total revenues		491		262		171			924
Less:
Manufacturing cost of sales		211		—		—			211
Engineering		57		—		—			57
Commissions		21		—		—			21
Sales and marketing		35		—		—			35
Accounting		—		—		50			50
Compensation		52		—		157			209
Corporation allocations (a)		11		93		(104	)		—
Other segment items (b)		36		21		315			372
Engineering, selling and administrative		212		114		418			744
Total expenses		423		114		418			955
Segment profit (loss)	$	68	$	148	$	(247	)	$	(31	)
Reconciliation of Segment profit (loss) to Income (loss) before income taxes
Adjustments and reconciling items									—
Loss before income taxes								$	(31	)

	Six Months Ended June 30, 2026
	Electronic Instruments		Merchant Investment		Corporate			Consolidated
Revenues:
Net sales	$	1,432	$	—	$	—		$	1,432
Net investment income		—		462		339			801
Net gains		—		—		5			5
Total revenues		1,432		462		344			2,238
Less:
Manufacturing cost of sales		715		—		—			715
Engineering		167		—		—			167
Commissions		43		—		—			43
Sales and marketing		122		—		—			122
Accounting		—		—		169			169
Compensation		114		—		1,150			1,264
Corporation allocations (a)		28		293		(321	)		—
Other segment items (b)		198		34		758			990
Engineering, selling and administrative		672		327		1,756			2,755
Total expenses		1,387		327		1,756			3,470
Segment profit (loss)	$	45	$	135	$	(1,412	)	$	(1,232	)
Reconciliation of Segment profit (loss) to Income (loss) before income taxes
Adjustments and reconciling items									—
Loss before income taxes								$	(1,232	)

	Six Months Ended June 30, 2025
	Electronic Instruments		Merchant Investment		Corporate			Consolidated
Revenues:
Net sales	$	989	$	—	$	—		$	989
Net investment income		—		509		336			845
Net gains		—		—		8			8
Total revenues		989		509		344			1,842
Less:
Manufacturing cost of sales		448		—		—			448
Engineering		114		—		—			114
Commissions		40		—		—			40
Sales and marketing		92		—		—			92
Accounting		—		—		125			125
Compensation		108		—		349			457
Corporation allocations (a)		22		186		(208	)		—
Other segment items (b)		78		22		456			556
Engineering, selling and administrative		454		208		722			1,384
Total expenses		902		208		722			1,832
Segment profit (loss)	$	87	$	301	$	(378	)	$	10
Reconciliation of Segment profit (loss) to Income (loss) before income taxes
Adjustments and reconciling items									—
Income before income taxes								$	10

Segment Reporting, Reconciliation of Other Item by Segment to Consolidated [Table Text Block]

	Three Months Ended June 30, 2026
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Interest revenue (a)	$	—	$	239	$	173	$	412	$	—	$	412
Amortization (b)		5		—		—		5		—		5
Other significant non-cash items:
Stock-based compensation (c)		—		—		160		160		—		160
Capital expenditures		—		—		—		—		—		—

	Three Months Ended June 30, 2025
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Interest revenue (a)	$	—	$	262	$	166	$	428	$	—	$	428
Amortization (b)		5		—		—		5		—		5
Other significant non-cash items:
Stock-based compensation (c)		—		—		17		17		—		17
Capital expenditures		—		—		—		—		—		—

	Six Months Ended June 30, 2026
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Interest revenue (a)	$	—	$	462	$	339	$	801	$	—	$	801
Amortization (b)		11		—		—		11		—		11
Other significant non-cash items:
Stock-based compensation (c)		—		—		848		848		—		848
Capital expenditures		—		—		—		—		—		—

	Six Months Ended June 30, 2025
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Interest revenue (a)	$	—	$	509	$	336	$	845	$	—	$	845
Amortization (b)		11		—		—		11		—		11
Other significant non-cash items:
Stock-based compensation (c)		—		—		26		26		—		26
Capital expenditures		—		—		—		—		—		—

Segment Reporting, Reconciliation of Asset by Segment to Consolidated [Table Text Block]

	June 30, 2026
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Total assets	$	1,469	$	28,196	$	20,019	$	49,684	$	—	$	49,684

	December 31, 2025
	Electronic Instruments		Merchant Investment		Corporate		Total		Adjustments and Reconciling Items		Consolidated
Total assets	$	1,237	$	25,768	$	19,771	$	46,776	$	—	$	46,776