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Property, Plant and Equipment (Narrative) (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Continuing operations |  |  |
Depreciation and amortization | $ 5.7 | $ 4.1 | $ 3.7

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