Goodwill and Other Intangible Assets (Summary of Goodwill Activity) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Goodwill [Roll Forward]
Beginning balance	$ 16,141	$ 19,181
Impairment charges		(2,500)
Goodwill acquired	18,606
Foreign currency translation adjustment	271	(540)
Ending balance	35,018	16,141
KELK \| Weighing and Control Systems
Goodwill [Roll Forward]
Beginning balance	6,288	6,828
Foreign currency translation adjustment	271	(540)
Ending balance	6,559	6,288
Dynamic Systems Inc. \| Weighing and Control Systems
Goodwill [Roll Forward]
Goodwill acquired	18,606
Ending balance	18,606
Stress-Tek, Inc. \| Weighing and Control Systems
Goodwill [Roll Forward]
Beginning balance	6,311	6,311
Ending balance	6,311	6,311
Pacific Instruments, Inc. \| Foil Technology Products
Goodwill [Roll Forward]
Beginning balance	3,542	6,042
Impairment charges		(2,500)
Ending balance	$ 3,542	$ 3,542

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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