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Other Intangible Assets (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 36,682 | $ 36,501
Accumulated Amortization | $ (7,460) | $ (6,695)
Weighted Average Useful Life (in years) | 13 years | 13 years
Technology - developed |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 12,949 | $ 12,911
Accumulated Amortization | $ (1,685) | $ (1,468)
Weighted Average Useful Life (in years) | 17 years | 17 years
Patents |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 240 | $ 240
Accumulated Amortization | $ (215) | $ (208)
Weighted Average Useful Life (in years) | 8 years | 8 years
Customer relationships |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 22,697 | $ 22,555
Accumulated Amortization | $ (5,525) | $ (4,995)
Weighted Average Useful Life (in years) | 11 years | 11 years
Other intangibles |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 85 | $ 84
Accumulated Amortization | $ (35) | $ (24)
Weighted Average Useful Life (in years) | 2 years | 2 years
Trademark |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount, indefinite lived intangible assets | $ 711 |
Trademark |  |
Intangible Assets [Line Items] |  |
Gross Carrying Amount, indefinite lived intangible assets |  | $ 711

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