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Business Combinations - Pro forma results of operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Business Combinations [Abstract]
Net revenue	$ 107,989	$ 94,621
Net income (loss)	518	(606)
Net loss attributable to common stockholders	$ (19,379)	$ (2,093)
Net loss per share attributable to common stockholders (basic and diluted)	$ (0.75)	$ (0.09)

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- Definition

Business Acquisition Pro Forma Earnings Per Share Basic And Diluted

+ References

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- Definition

Business Acquisitions Pro Forma Net Income Loss Attributable To Common Stockholders

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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