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Operating Segments and Geographic Information (Contract Assets by Segment) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Contract assets | $ 26,575 | $ 22,455
Advanced Connectivity Solutions |  |
Segment Reporting Information [Line Items] |  |
Contract assets | 750 | 0
Elastomeric Material Solutions |  |
Segment Reporting Information [Line Items] |  |
Contract assets | 887 | 1,077
Power Electronics Solutions |  |
Segment Reporting Information [Line Items] |  |
Contract assets | 23,449 | 19,471
Other |  |
Segment Reporting Information [Line Items] |  |
Contract assets | $ 1,489 | $ 1,907

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