Acquisitions - Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Acquisitions - Pro Forma [Abstract]
Business Acquisition, Pro Forma Revenue	$ 421,468	$ 344,967
Business Acquisition, Pro Forma Net Income	$ 9,567	$ 15,899
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 0.18	$ 0.32
Business Acquisition, Pro Forma Revenue	$ 38,234	$ 38,438
Business Combination, Pro Forma Information, Income (Loss) of Acquiree since acquisition	$ 395	$ (729)

Acquisitions - Pro Forma [Abstract]

No definition available.

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- Definition

Business Combination, Pro Forma Information, Income (Loss) of Acquiree since acquisition

+ References

No definition available.

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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

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 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.

+ References

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- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting 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)(1)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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