Revenues - (Disaggregation of Revenue by Market Sector) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Sep. 30, 2023	Oct. 01, 2022
Disaggregation of Revenue [Line Items]
Total revenue	$ 85,854	$ 90,057	$ 265,520	$ 266,340
Test & Measurement
Disaggregation of Revenue [Line Items]
Total revenue	17,080	20,659	54,449	60,115
Avionics, Military & Space
Disaggregation of Revenue [Line Items]
Total revenue	8,294	6,523	28,285	21,563
Transportation
Disaggregation of Revenue [Line Items]
Total revenue	15,490	13,912	40,993	41,061
Other Markets
Disaggregation of Revenue [Line Items]
Total revenue	16,402	20,110	54,124	59,295
Industrial Weighing
Disaggregation of Revenue [Line Items]
Total revenue	10,533	12,473	33,586	38,626
General Industrial
Disaggregation of Revenue [Line Items]
Total revenue	4,643	4,981	14,858	16,172
Steel
Disaggregation of Revenue [Line Items]
Total revenue	$ 13,412	$ 11,399	$ 39,225	$ 29,508