Note 3 - Acquisitions (Details) - Pro Forma Results of Operations - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Pro Forma Results of Operations [Abstract]
Pro forma revenues	$ 209,094	$ 207,638	$ 407,550	$ 397,383
Pro forma net income (loss)	$ (7,756)	$ 4,023	$ (5,829)	$ 3,828
Pro forma income (loss) per share: Basic	$ (0.19)	$ 0.10	$ (0.14)	$ 0.10
Pro forma income (loss) per share: Diluted	$ (0.19)	$ 0.10	$ (0.14)	$ 0.09

No definition available.

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- Definition

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.

+ 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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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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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.

+ References

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