Revenues - (Disaggregation of Revenue by Market Sector) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 02, 2022	Jul. 03, 2021	Jul. 02, 2022	Jul. 03, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 88,618	$ 75,339	$ 176,283	$ 145,928
Test & Measurement
Disaggregation of Revenue [Line Items]
Total revenue	21,483	16,279	39,456	30,695
Avionics, Military & Space
Disaggregation of Revenue [Line Items]
Total revenue	6,878	5,872	15,040	11,902
Transportation
Disaggregation of Revenue [Line Items]
Total revenue	13,195	11,930	27,149	21,484
Other Markets
Disaggregation of Revenue [Line Items]
Total revenue	18,035	17,489	39,185	35,034
Industrial Weighing
Disaggregation of Revenue [Line Items]
Total revenue	12,944	12,042	26,153	24,047
General Industrial
Disaggregation of Revenue [Line Items]
Total revenue	5,325	4,173	11,191	8,255
Steel
Disaggregation of Revenue [Line Items]
Total revenue	$ 10,758	$ 7,554	$ 18,109	$ 14,511