Revenues - (Disaggregation of Revenue by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2023	Apr. 02, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 88,864	$ 87,665
United States
Disaggregation of Revenue [Line Items]
Total revenue	38,214	37,549
United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	5,020	5,509
Other Europe
Disaggregation of Revenue [Line Items]
Total revenue	22,894	20,205
Israel
Disaggregation of Revenue [Line Items]
Total revenue	4,039	7,521
Asia
Disaggregation of Revenue [Line Items]
Total revenue	14,398	13,389
Canada
Disaggregation of Revenue [Line Items]
Total revenue	4,299	3,492
Sensors
Disaggregation of Revenue [Line Items]
Total revenue	36,726	37,750
Sensors | United States
Disaggregation of Revenue [Line Items]
Total revenue	12,674	13,006
Sensors | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	815	877
Sensors | Other Europe
Disaggregation of Revenue [Line Items]
Total revenue	10,007	7,792
Sensors | Israel
Disaggregation of Revenue [Line Items]
Total revenue	3,963	7,331
Sensors | Asia
Disaggregation of Revenue [Line Items]
Total revenue	9,267	8,744
Sensors | Canada
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Weighing Solutions
Disaggregation of Revenue [Line Items]
Total revenue	31,859	32,768
Weighing Solutions | United States
Disaggregation of Revenue [Line Items]
Total revenue	14,879	14,078
Weighing Solutions | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	4,109	4,334
Weighing Solutions | Other Europe
Disaggregation of Revenue [Line Items]
Total revenue	9,717	10,531
Weighing Solutions | Israel
Disaggregation of Revenue [Line Items]
Total revenue	76	190
Weighing Solutions | Asia
Disaggregation of Revenue [Line Items]
Total revenue	3,078	3,635
Weighing Solutions | Canada
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Measurement Systems
Disaggregation of Revenue [Line Items]
Total revenue	20,279	17,147
Measurement Systems | United States
Disaggregation of Revenue [Line Items]
Total revenue	10,661	10,465
Measurement Systems | United Kingdom
Disaggregation of Revenue [Line Items]
Total revenue	96	298
Measurement Systems | Other Europe
Disaggregation of Revenue [Line Items]
Total revenue	3,170	1,882
Measurement Systems | Israel
Disaggregation of Revenue [Line Items]
Total revenue	0	0
Measurement Systems | Asia
Disaggregation of Revenue [Line Items]
Total revenue	2,053	1,010
Measurement Systems | Canada
Disaggregation of Revenue [Line Items]
Total revenue	$ 4,299	$ 3,492