Net Income Per Share

12 Months Ended

Dec. 31, 2019

Basic net income per share is computed by dividing net income for the period by the weighted-average number of shares outstanding during the period. In periods of net loss, all potential common shares are anti-dilutive, so diluted net loss per share equals the basic net loss per share. In periods of net income, diluted net income per share is computed by dividing net income for the period by the basic weighted-average number of shares plus any dilutive potential common stock outstanding during the period. Potential common stock includes the effect of outstanding dilutive stock options, restricted stock awards and restricted stock units computed using the treasury stock method. Any anti-dilutive weighted-average dilutive shares related to stock award plans are excluded from the computation of the diluted net income per share.

The basic and diluted net income per share calculations for the years ended December 31, 2019, 2018, and 2017 were as follows:


	Year Ended December 31,
	2019		2018		2017

	(In thousands, except per share data)
Net income	$	61,338	$	37,729	$	30,518
Weighted-average shares outstanding — basic	41,462		39,242		37,483
Effect of dilutive securities from stock award plans	1,481		1,317		1,229
Weighted-average shares outstanding — diluted	42,943		40,559		38,712
Net income per share - basic	$	1.48	$	0.96	$	0.81
Net income per share - diluted	$	1.43	$	0.93	$	0.79

Anti-dilutive weighted-average shares related to stock award plans	926		1,279		501