Note 2 - Revenues - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 04, 2026	Jun. 28, 2025	Jul. 04, 2026	Jun. 28, 2025
Net revenues	$ 83,936	$ 75,161	$ 168,288	$ 146,902
Test & Measurement Sector [Member]
Net revenues	17,436	14,881	35,204	29,614
Avionics, Military & Space Sector [Member]
Net revenues	10,359	7,278	21,669	12,656
Transportation Sector [Member]
Net revenues	14,735	15,496	29,535	30,927
Other Markets [Member]
Net revenues	14,953	14,815	31,314	28,063
Industrial Weighing Sector [Member]
Net revenues	9,407	9,450	19,178	17,660
General Industrial Sector [Member]
Net revenues	6,932	4,318	13,370	9,606
Steel Sector [Member]
Net revenues	10,114	8,923	18,018	18,376
UNITED STATES
Net revenues	36,678	35,934	77,175	69,883
Europe [Member]
Net revenues	25,626	21,710	49,909	42,619
Asia [Member]
Net revenues	14,983	9,748	26,507	19,942
CANADA
Net revenues	2,559	4,129	6,203	7,415
ISRAEL
Net revenues	4,090	3,640	8,494	7,043
Sensors Segment [Member]
Net revenues	33,418	26,563	66,732	53,620
Sensors Segment [Member] \| UNITED STATES
Net revenues	12,415	10,756	26,610	21,233
Sensors Segment [Member] \| Europe [Member]
Net revenues	8,649	7,170	16,890	15,517
Sensors Segment [Member] \| Asia [Member]
Net revenues	8,309	5,045	14,874	9,908
Sensors Segment [Member] \| CANADA
Net revenues	0	0	0	0
Sensors Segment [Member] \| ISRAEL
Net revenues	4,045	3,592	8,358	6,962
Weighing Solutions Segment [Member]
Net revenues	30,349	29,428	60,584	55,866
Weighing Solutions Segment [Member] \| UNITED STATES
Net revenues	10,406	12,470	22,338	23,655
Weighing Solutions Segment [Member] \| Europe [Member]
Net revenues	15,935	13,819	30,736	25,912
Weighing Solutions Segment [Member] \| Asia [Member]
Net revenues	3,963	3,077	7,373	6,196
Weighing Solutions Segment [Member] \| CANADA
Net revenues	0	14	1	22
Weighing Solutions Segment [Member] \| ISRAEL
Net revenues	45	48	136	81
Measurement Systems Segment [Member]
Net revenues	20,169	19,170	40,972	37,416
Measurement Systems Segment [Member] \| UNITED STATES
Net revenues	13,857	12,708	28,227	24,995
Measurement Systems Segment [Member] \| Europe [Member]
Net revenues	1,042	721	2,283	1,190
Measurement Systems Segment [Member] \| Asia [Member]
Net revenues	2,711	1,626	4,260	3,838
Measurement Systems Segment [Member] \| CANADA
Net revenues	2,559	4,115	6,202	7,393
Measurement Systems Segment [Member] \| ISRAEL
Net revenues	$ 0	$ 0	$ 0	$ 0