v3.26.1
Note 3 - Segment Information - Schedule of Segment Reporting Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Net sales $ 750 $ 491 $ 1,432 $ 989
Net investment income 412 428 801 845
Net losses (9) 5 5 8
Total revenues 1,153 924 2,238 1,842
Manufacturing cost of sales 381 211 715 448
Engineering 77 57 167 114
Commissions 18 21 43 40
Sales and marketing 59 35 122 92
Accounting 99 50 169 125
Compensation 393 209 1,264 457
Corporation allocations (a) [1] 0 0 0 0
Other segment items (b) [2] 573 372 990 556
Engineering, selling and administrative 1,219 744 2,755 1,384
Total expenses 1,600 955 3,470 1,832
Segment profit (loss) (447) (31) (1,232) 10
Loss before income taxes (447) (31) (1,232) 10
Net gains (9) 5 5 8
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member]        
Net sales 0 0 0 0
Net investment income 173 166 339 336
Net losses (9) 5 5 8
Total revenues 164 171 344 344
Manufacturing cost of sales 0 0 0 0
Engineering 0 0 0 0
Commissions 0 0 0 0
Sales and marketing 0 0 0 0
Accounting 99 50 169 125
Compensation 337 157 1,150 349
Corporation allocations (a) (180) [1] (104) [1] (321) (208) [1]
Other segment items (b) [2] 420 315 758 456
Engineering, selling and administrative 676 418 1,756 722
Total expenses 676 418 1,756 722
Segment profit (loss) (512) (247) (1,412) (378)
Loss before income taxes    
Net gains (9) 5 5 8
Electronic Instruments [Member] | Operating Segments [Member]        
Net sales 750 491 1,432 989
Net investment income 0 0 0 0
Net losses 0 0 0 0
Total revenues 750 491 1,432 989
Manufacturing cost of sales 381 211 715 448
Engineering 77 57 167 114
Commissions 18 21 43 40
Sales and marketing 59 35 122 92
Accounting 0 0 0 0
Compensation 56 52 114 108
Corporation allocations (a) [1] 12 11 28 22
Other segment items (b) [2] 119 36 198 78
Engineering, selling and administrative 341 212 672 454
Total expenses 722 423 1,387 902
Segment profit (loss) 28 68 45 87
Loss before income taxes    
Net gains 0 0 0 0
Merchant Investment [Member] | Operating Segments [Member]        
Net sales 0 0 0 0
Net investment income 239 262 462 509
Net losses 0 0 0 0
Total revenues 239 262 462 509
Manufacturing cost of sales 0 0 0 0
Engineering 0 0 0 0
Commissions 0 0 0 0
Sales and marketing 0 0 0 0
Accounting 0 0 0 0
Compensation 0 0 0 0
Corporation allocations (a) [1] 168 93 293 186
Other segment items (b) [2] 34 21 34 22
Engineering, selling and administrative 202 114 327 208
Total expenses 202 114 327 208
Segment profit (loss) 37 148 135 301
Loss before income taxes    
Net gains $ 0 $ 0 $ 0 $ 0
[1] The Electronic Instruments and Merchant Investment segments are allocated overhead expenses from the Corporate segment based on each segment's assets as a percentage of Total assets.
[2] Other segment items for each reportable segment includes the following: Electronic Instruments - rent, amortization, professional service fees, and certain other overhead expenses. Merchant Investment - legal expense and certain other overhead expenses. Corporate - legal expense, insurance expense, filing fees, fees paid to M-tron Industries, Inc. under Amended and Restated Transitional Administrative and Management Services Agreement, expense reimbursements paid to / received from M-tron Industries, Inc., and certain other overhead expenses.