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Subsequent Events - Additional Information (Detail) $ in Millions | Oct. 18, 2019 USD ($) | Dec. 31, 2018 USD ($)
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Subsequent Event [Line Items] |  |
Business acquisiton consideration through earnouts |  | $ 30.8
Industrial Automation | Subsequent Event | Autoguide LLC [Member] |  |
Subsequent Event [Line Items] |  |
Business acquisition percentage of equity | 100.00% |
Business acquisition,cash consideration | $ 58.0 |
Business acquisiton consideration through earnouts | $ 107.0 |
Quantity of material to be transported | 4,500 |

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