Organization and Significant Accounting Policies - Summary of Intangible Asset Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
Gross Carrying Amount	$ 10,708	$ 14,596
Accumulated Amortization	(7,257)	(7,452)
Net Carrying Amount	3,451	7,144
Customer relationships
Gross Carrying Amount	3,119	3,633
Accumulated Amortization	(2,979)	(3,114)
Net Carrying Amount	$ 140	519
Trademarks and trade names
Amortization Period	8 years
Gross Carrying Amount	$ 351	441
Accumulated Amortization	(351)	(382)
Net Carrying Amount	0	59
Patent assets
Gross Carrying Amount	3,100	3,007
Accumulated Amortization	(1,444)	(1,210)
Net Carrying Amount	1,656	1,797
Acquired technologies
Gross Carrying Amount	4,138	7,515
Accumulated Amortization	(2,483)	(2,746)
Net Carrying Amount	$ 1,655	$ 4,769
Minimum \| Customer relationships
Amortization Period	11 years
Minimum \| Patent assets
Amortization Period	1 year
Minimum \| Acquired technologies
Amortization Period	5 years
Maximum \| Customer relationships
Amortization Period	15 years
Maximum \| Patent assets
Amortization Period	20 years
Maximum \| Acquired technologies
Amortization Period	8 years

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

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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

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- Definition

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

+ References

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

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