Revenues - (Disaggregation of Revenue by Market Sector) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 01, 2023	Jul. 02, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 90,802	$ 88,618	$ 179,666	$ 176,283
Test & Measurement
Disaggregation of Revenue [Line Items]
Total revenue	18,705	21,483	37,369	39,456
Avionics, Military & Space
Disaggregation of Revenue [Line Items]
Total revenue	8,284	6,878	19,991	15,040
Transportation
Disaggregation of Revenue [Line Items]
Total revenue	13,031	13,195	25,503	27,149
Other Markets
Disaggregation of Revenue [Line Items]
Total revenue	18,417	18,035	37,722	39,185
Industrial Weighing
Disaggregation of Revenue [Line Items]
Total revenue	12,027	12,944	23,053	26,153
General Industrial
Disaggregation of Revenue [Line Items]
Total revenue	5,417	5,325	10,215	11,191
Steel
Disaggregation of Revenue [Line Items]
Total revenue	$ 14,921	$ 10,758	$ 25,813	$ 18,109