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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

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