Other Purchased Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 39,689	$ 39,689
Accumulated Amortization	(33,428)	(31,101)
Net Carrying Amount	10,734	8,588
Acquisition of legodo ag	4,473
Customer lists
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	22,350	22,350
Accumulated Amortization	(19,603)	(18,539)
Net Carrying Amount	4,516	3,811
Acquisition of legodo ag	1,769
Purchased technologies
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	17,325	17,325
Accumulated Amortization	(13,787)	(12,527)
Net Carrying Amount	6,260	4,798
Acquisition of legodo ag	2,722
Leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	47	47
Accumulated Amortization	(42)	(35)
Net Carrying Amount	5	12
Foreign currency impact
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	(33)	(33)
Accumulated Amortization	4
Net Carrying Amount	(47)	(33)
Acquisition of legodo ag	$ (18)

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

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=26713463&loc=d3e16323-109275

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

+ References

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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.

+ References

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