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Business Segment Information - Revenue from External Customers by Geographic Area (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | $ 343,083 | $ 349,278 | $ 337,118
United States [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | 203,664 | 186,344 | 207,062
Americas Other [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | 1,680 | 1,720 | 832
Total Americas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | 205,344 | 188,064 | 207,894
Europe [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | 118,513 | 136,440 | 114,848
Total Asia [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Long-lived assets | $ 19,226 | $ 24,774 | $ 14,376

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