Note 3 - Acquisitions (Details) - Pro Forma Results of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Pro Forma Results of Operations [Abstract]
Pro forma revenues	$ 203,334	$ 178,827	$ 389,496	$ 348,401
Pro forma net income (loss)	$ 3,975	$ (2,366)	$ 3,695	$ (6,268)
Pro forma income (loss) per share: Basic	$ 0.10	$ (0.07)	$ 0.10	$ (0.18)
Pro forma income (loss) per share: Diluted	$ 0.10	$ (0.07)	$ 0.09	$ (0.18)

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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=25497992&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

+ Details

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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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