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Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Intangible Assets [Line Items]
Gross Carrying Amount	$ 158,027	$ 36,501
Accumulated Amortization	$ (10,611)	$ (6,695)
Weighted Average Useful Life (in years)	16 years	13 years
Technology - developed
Intangible Assets [Line Items]
Gross Carrying Amount	$ 51,775	$ 12,911
Accumulated Amortization	$ (2,491)	$ (1,468)
Weighted Average Useful Life (in years)	19 years	17 years
Patents
Intangible Assets [Line Items]
Gross Carrying Amount	$ 240	$ 240
Accumulated Amortization	$ (230)	$ (208)
Weighted Average Useful Life (in years)	8 years	8 years
Customer relationships
Intangible Assets [Line Items]
Gross Carrying Amount	$ 102,090	$ 22,555
Accumulated Amortization	$ (7,774)	$ (4,995)
Weighted Average Useful Life (in years)	15 years	11 years
Other intangibles
Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,062	$ 84
Accumulated Amortization	$ (116)	$ (24)
Weighted Average Useful Life (in years)	3 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	$ 2,860

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- Definition

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
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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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
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-Section 50
-Paragraph 2
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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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-Section 50
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