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Business Segment Information - Additional Information (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2018 USD ($) Segment | Dec. 31, 2017 USD ($) | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |
Sales outside country, percentage | 33.00% | 32.00% | 37.00%
Europe [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales outside country, percentage | 11.00% |  |
Long lived assets located outside country | $ 14.5 |  |
Asia [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales outside country, percentage | 11.50% |  |
Middle East and Africa [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Sales outside country, percentage | 6.20% |  |
Outside United States [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long lived assets located outside country | $ 19.1 | $ 29.7 |
Net Sales [Member] | Customer Concentration Risk [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Major customer | 10.00% | 10.00% | 10.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Major customer | 10.00% | 10.00% | 10.00%
CECO Group, Inc. [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | Segment | 3 |  |

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