Revenues - (Disaggregation of Revenue by Market Sector) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Disaggregation of Revenue [Line Items]
Total revenue	$ 90,057	$ 81,974	$ 266,340	$ 227,902
Test & Measurement
Disaggregation of Revenue [Line Items]
Total revenue	20,659	15,883	60,115	46,578
Avionics, Military & Space
Disaggregation of Revenue [Line Items]
Total revenue	6,523	7,542	21,563	19,444
Transportation
Disaggregation of Revenue [Line Items]
Total revenue	13,912	13,668	41,061	35,152
Other Markets
Disaggregation of Revenue [Line Items]
Total revenue	20,110	17,453	59,295	52,487
Industrial Weighing
Disaggregation of Revenue [Line Items]
Total revenue	12,473	12,254	38,626	36,301
General Industrial
Disaggregation of Revenue [Line Items]
Total revenue	4,981	4,069	16,172	12,324
Steel
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,399	$ 11,105	$ 29,508	$ 25,616