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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 | 9 Months Ended
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Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013
Business Combinations [Abstract] |  |  |  |
Net revenue | $ 140,856 | $ 118,821 | $ 376,725 | $ 321,382
Net income | 5,898 | 2,851 | 8,685 | 3,541
Net income (loss) attributable to common stockholders | $ 5,898 | $ 1,273 | $ (11,212) | $ (1,056)
Net income (loss) per share attributable to common stockholders (basic and diluted) | $ 0.19 | $ 0.06 | $ (0.38) | $ (0.05)

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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 + Details
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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 + Details
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