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Note 9 - Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

		Year Ended December 31,
		2014				2013				2012
Numerator:
Net income		$	18,462			$	20,929			$	37,211
Numerator:
Basic weighted-average shares outstanding			30,743				29,826				28,700
Effect of dilutive options and restricted stock			1,196				1,567				1,109
Diluted weighted-average shares outstanding			31,939				31,393				29,809
Net income per share - Basic		$	0.60			$	0.70			$	1.30
Net income per share - Diluted		$	0.58			$	0.67			$	1.25

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

		December 31,
		2014				2013
Outstanding options			61				49
Nonvested shares of restricted stock units			19				4
Employee Stock Purchase Plan			50				7
Total			130				60

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- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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