Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Basic and Diluted Net Income Per Share

The calculation of basic and diluted net income per share is as follows:

	Year Ended
	December 31, 2016		December 31, 2015		December 31, 2014
	(In thousands, except per share data)
Net income	$	603	$	30,760	$	30,518
Weighted-average shares outstanding — basic	36,156		35,857		35,650
Add: Dilutive effect of employee stock plans	708		861		972
Weighted-average shares outstanding — diluted	36,864		36,718		36,622
Net income per share — basic	$	0.02	$	0.86	$	0.86
Net income per share — diluted	$	0.02	$	0.84	$	0.83
Anti-dilutive weighted-average shares related to stock award plans	1,345		555		640