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Fair Value and Estimated Useful Lives of Intangibles, Atyati Technologies Private Limited (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended				1 Months Ended
	Sep. 30, 2013 Customer-Related Intangible Assets Minimum	Sep. 30, 2013 Customer-Related Intangible Assets Maximum	Sep. 30, 2013 Other Intangible Assets Minimum	Sep. 30, 2013 Other Intangible Assets Maximum	Sep. 04, 2012 Atyati Technologies Private Limited Customer-Related Intangible Assets	Sep. 04, 2012 Atyati Technologies Private Limited Customer-Related Intangible Assets Minimum	Sep. 04, 2012 Atyati Technologies Private Limited Customer-Related Intangible Assets Maximum	Sep. 04, 2012 Atyati Technologies Private Limited Other Intangible Assets
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets value					$ 5,408			$ 3,359
Intangible assets estimated useful lives	1 year	14 years	3 years	9 years		4 years	9 years	7 years

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

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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.

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