Net Income Per Share

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 calculation for the three months ended March 31, 2019 and 2018 was as follows:



	Three months ended March 31,
	2019		2018
	(In thousands, except per share data)
Net income	$	3,284	$	2,720
Weighted-average shares outstanding — basic	40,692		38,635
Effect of dilutive securities from stock award plans	1,589		1,056
Weighted-average shares outstanding — diluted	42,281		39,691
Net income per share - basic	$	0.08	$	0.07
Net income per share - diluted	$	0.08	$	0.07

Anti-dilutive weighted-average shares related to stock award plans	635		1,113