Revenues (Disaggregation of Revenue by Market Sector) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 317,919	$ 269,812	$ 283,958
Test & Measurement
Disaggregation of Revenue [Line Items]
Revenue	64,124	53,633	64,982
Avionics, Military & Space
Disaggregation of Revenue [Line Items]
Revenue	27,303	32,607	23,653
Transportation
Disaggregation of Revenue [Line Items]
Revenue	49,562	29,483	36,914
Other Markets
Disaggregation of Revenue [Line Items]
Revenue	71,577	58,256	50,169
Industrial Weighing
Disaggregation of Revenue [Line Items]
Revenue	50,626	43,441	54,678
General Industrial
Disaggregation of Revenue [Line Items]
Revenue	16,771	15,351	20,466
Steel
Disaggregation of Revenue [Line Items]
Revenue	$ 37,956	$ 37,041	$ 33,096