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Intangible Assets (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 158,236 | $ 157,384
Gross Carrying Value | 158,936 | 158,084
Accumulated Amortization | (23,498) | (13,331)
Net Carrying Value | 134,738 | 144,053
Net Carrying Value | $ 135,438 | $ 144,753
Weighted Average Useful Life (in years) | 16 years | 16 years
Trademark |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 700 | $ 700
Net Carrying Value | 700 | 700
Accumulated Amortization | 0 | 0
Technology - developed |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | 53,315 | 51,801
Accumulated Amortization | (5,942) | (3,201)
Net Carrying Value | $ 47,373 | $ 48,600
Weighted Average Useful Life (in years) | 19 years | 19 years
Patents |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 240 | $ 240
Accumulated Amortization | (240) | (238)
Net Carrying Value | $ 0 | $ 2
Weighted Average Useful Life (in years) | 8 years | 8 years
Customer relationships |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 101,460 | $ 102,120
Accumulated Amortization | (16,609) | (9,636)
Net Carrying Value | $ 84,851 | $ 92,484
Weighted Average Useful Life (in years) | 14 years | 14 years
Trademark |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 2,160 | $ 2,160
Accumulated Amortization | (159) | (47)
Net Carrying Value | $ 2,001 | $ 2,113
Weighted Average Useful Life (in years) | 20 years | 20 years
Other intangibles |  |
Intangible Assets [Line Items] |  |
Gross Carrying Value | $ 1,061 | $ 1,063
Accumulated Amortization | (548) | (209)
Net Carrying Value | $ 513 | $ 854
Weighted Average Useful Life (in years) | 3 years | 3 years

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