Business Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Business Combinations [Abstract]
Pro forma net revenues	$ 361,217	$ 340,915
Pro forma net income	$ 23,742	$ 22,511
Pro forma net income (loss) per share basic (in dollars per share)	$ 0.66	$ 0.63
Pro forma net income (loss) per share diluted (in dollars per share)	$ 0.64	$ 0.61

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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=56956515&loc=d3e1392-128463

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- Definition

The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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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

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

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No definition available.

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