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Goodwill and Other Intangibles - Finite and Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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Finite-lived intangible assets |  |
Gross Carrying Amount | $ 22,589 | $ 22,445
Accumulated Amortization | (14,271) | (13,987)
Indefinite-lived intangible assets Goodwill | 25,465 | 15,621
Patents [Member] |  |
Finite-lived intangible assets |  |
Gross Carrying Amount | 4,806 | 4,806
Accumulated Amortization | (4,806) | (4,788)
Land Use Rights [Member] |  |
Finite-lived intangible assets |  |
Gross Carrying Amount | 1,145 | 1,134
Accumulated Amortization | (203) | (203)
Trademarks [Member] |  |
Finite-lived intangible assets |  |
Gross Carrying Amount | 1,721 | 1,707
Accumulated Amortization | (1,281) | (1,247)
Technology [Member] |  |
Finite-lived intangible assets |  |
Gross Carrying Amount | 3,022 | 2,994
Accumulated Amortization | (1,381) | (1,334)
Customer Relationships [Member] |  |
Finite-lived intangible assets |  |
Gross Carrying Amount | 11,895 | 11,804
Accumulated Amortization | $ (6,600) | $ (6,415)

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