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Basis of Presentation - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Contingent consideration payments	$ 7,179
Reclassifications
Organization And Summary Of Significant Accounting Policies Disclosure [Line Items]
Contingent consideration payments	$ 7,200

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- Definition

Payments For Contingent Consideration

+ References

No definition available.

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