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Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Gross Carrying Amount	$ 158,084	$ 36,501
Accumulated Amortization	$ (13,331)	$ (6,695)
Weighted Average Useful Life (in years)	16 years	13 years
Trademark
Intangible Assets [Line Items]
Gross Carrying Amount, indefinite lived intangible assets	$ 700	$ 711
Technology - developed
Intangible Assets [Line Items]
Gross Carrying Amount	51,801	12,911
Accumulated Amortization	$ (3,201)	$ (1,468)
Weighted Average Useful Life (in years)	19 years	17 years
Patents
Intangible Assets [Line Items]
Gross Carrying Amount	$ 240	$ 240
Accumulated Amortization	$ (238)	$ (208)
Weighted Average Useful Life (in years)	8 years	8 years
Customer relationships
Intangible Assets [Line Items]
Gross Carrying Amount	$ 102,120	$ 22,555
Accumulated Amortization	$ (9,636)	$ (4,995)
Weighted Average Useful Life (in years)	14 years	11 years
Other intangibles
Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,063	$ 84
Accumulated Amortization	$ (209)	$ (24)
Weighted Average Useful Life (in years)	3 years	2 years
Trademark
Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,160
Accumulated Amortization	$ (47)
Weighted Average Useful Life (in years)	20 years

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Intangible Assets [Line Items]

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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
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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 350
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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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-Name Accounting Standards Codification
-Topic 350
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