Note 7 - Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

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

	Three Months Ended March 31,
	2014		2013
Numerator:
Net income	$	6,255	$	4,731
Denominator:
Basic weighted-average shares outstanding		30,477		29,353
Effect of dilutive options and restricted stock		1,488		1,462
Diluted weighted average shares outstanding		31,965		30,815
Net income per share - Basic	$	0.21	$	0.16
Net income per share - Diluted	$	0.20	$	0.15

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

	Three Months Ended March 31,
	2014		2013
Outstanding options		19		132
Employee Stock Purchase Plan		48		—
Total		67		132