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Goodwill and Other Intangibles - Finite and Indefinite-Lived Intangible Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | --- | ---
Finite-lived intangible assets |  |  |
Gross Carrying Amount | $ 22,741 | $ 22,520 |
Accumulated Amortization | (12,266) | (11,232) |
Indefinite-lived intangible assets Goodwill | 15,769 | 15,821 | $ 17,792
Patents [Member] |  |  |
Finite-lived intangible assets |  |  |
Gross Carrying Amount | 4,816 | 4,815 |
Accumulated Amortization | (4,799) | (4,799) |
Land Use Rights [Member] |  |  |
Finite-lived intangible assets |  |  |
Gross Carrying Amount | 1,070 | 1,155 |
Accumulated Amortization | (180) | (173) |
Trademark [Member] |  |  |
Finite-lived intangible assets |  |  |
Gross Carrying Amount | 1,725 | 1,713 |
Accumulated Amortization | (1,039) | (899) |
Technology [Member] |  |  |
Finite-lived intangible assets |  |  |
Gross Carrying Amount | 3,057 | 3,021 |
Accumulated Amortization | (1,031) | (860) |
Customer Relationships [Member] |  |  |
Finite-lived intangible assets |  |  |
Gross Carrying Amount | 12,073 | 11,816 |
Accumulated Amortization | $ (5,217) | $ (4,501) |

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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