Business Acquisitions - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014
Business Combinations [Abstract]
Pro forma net revenues	$ 236,000	$ 220,000
Pro forma net income	$ 15,700	$ 14,400
Pro forma net income (loss) per share basic (in dollars per share)	$ 0.44	$ 0.41
Pro forma net income (loss) per share diluted (in dollars per share)	$ 0.42	$ 0.39

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.

+ References

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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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- Definition

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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- References

No definition available.

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