Net Income Per Share

6 Months Ended

Jun. 30, 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 three and six months ended June 30, 2019 and 2018 were as follows:



	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
	(In thousands, except per share data)
Net income	$	15,976	$	6,588	$	19,260	$	9,308
Weighted-average shares outstanding — basic	41,371		38,970		41,033		38,804
Effect of dilutive securities from stock award plans	1,574		1,030		1,613		1,050
Weighted-average shares outstanding — diluted	42,945		40,000		42,646		39,854
Net income per share - basic	$	0.39	$	0.17	$	0.47	$	0.24
Net income per share - diluted	$	0.37	$	0.16	$	0.45	$	0.23

Anti-dilutive weighted-average shares related to stock award plans	741		1,264		748		1,249