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Revenue from Contracts with Customers - Summary of Revenue from Contracts with Customers (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Revenue, Major Customer [Line Items] |  |
Net sales | $ 169,148 | $ 157,555
Intersegment Sales Eliminations [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | (528) |
United States [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 119,808 |
United States [Member] | Intersegment Sales Eliminations [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | (528) |
Chinese [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 13,192 |
Mexico [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 10,605 |
Brazilian [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 9,935 |
Poland [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 2,066 |
Czech Republic [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,810 |
Germany [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,542 |
Italy [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,675 |
Switzerland [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,406 |
Netherlands [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 974 |
Other Country [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 6,135 |
Mobile Solutions [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 89,794 | 86,446
Mobile Solutions [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 89,794 |
Mobile Solutions [Member] | United States [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 49,655 |
Mobile Solutions [Member] | Chinese [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 11,581 |
Mobile Solutions [Member] | Mexico [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 7,236 |
Mobile Solutions [Member] | Brazilian [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 9,885 |
Mobile Solutions [Member] | Poland [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 2,052 |
Mobile Solutions [Member] | Czech Republic [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,810 |
Mobile Solutions [Member] | Germany [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,534 |
Mobile Solutions [Member] | Italy [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,577 |
Mobile Solutions [Member] | Switzerland [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,406 |
Mobile Solutions [Member] | Other Country [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 3,058 |
Power Solutions [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 48,682 | 48,424
Power Solutions [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 48,682 |
Power Solutions [Member] | United States [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 40,128 |
Power Solutions [Member] | Chinese [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1,485 |
Power Solutions [Member] | Mexico [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 3,197 |
Power Solutions [Member] | Brazilian [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 50 |
Power Solutions [Member] | Poland [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 14 |
Power Solutions [Member] | Germany [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 7 |
Power Solutions [Member] | Italy [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 98 |
Power Solutions [Member] | Netherlands [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 974 |
Power Solutions [Member] | Other Country [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 2,729 |
Life Sciences [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 31,200 | $ 23,129
Life Sciences [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 31,200 |
Life Sciences [Member] | United States [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 30,553 |
Life Sciences [Member] | Chinese [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 126 |
Life Sciences [Member] | Mexico [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 172 |
Life Sciences [Member] | Germany [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | 1 |
Life Sciences [Member] | Other Country [Member] | Operating Segments [Member] |  |
Revenue, Major Customer [Line Items] |  |
Net sales | $ 348 |

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