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Operating Segment Information (Contract Assets By Operating Segments) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Contract assets | $ 30,285 | $ 26,575
Advanced Electronics Solutions |  |
Segment Reporting Information [Line Items] |  |
Contract assets | 25,947 | 24,199
Elastomeric Material Solutions |  |
Segment Reporting Information [Line Items] |  |
Contract assets | 1,828 | 887
Other |  |
Segment Reporting Information [Line Items] |  |
Contract assets | $ 2,510 | $ 1,489

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