8. Net Income Per Share

Basic net income per share excludes dilution and is computed by dividing net income by the weighted average number of common shares outstanding for the period. Diluted net income per share reflects the potential dilution that would occur if outstanding securities or other contracts to issue common stock were exercised or converted into common stock.

The following is a reconciliation of the numerators and denominators used in computing basic and diluted net income (loss) per share (in thousands, except per share data):

	Three Months Ended				Six Months Ended
	June 29,		June 30,		June 29,		June 30,
	2018		2017		2018		2017
Numerator:
Net income	$	18,960	$	20,179	$	43,701	$	34,520
Denominator:
Shares used in computation — basic:
Weighted average common shares outstanding		38,802		33,433		37,763		33,247
Shares used in computation — diluted:
Shares used in computing basic net income per share		38,802		33,433		37,763		33,247
Dilutive effect of common shares outstanding subject to repurchase		489		622		649		749
Dilutive effect of options outstanding		6		9		6		21
Weighted average shares used in computing diluted net income per share		39,297		34,064		38,418		34,017
Net income per share — basic	$	0.49	$	0.60	$	1.16	$	1.04
Net income per share — diluted	$	0.48	$	0.59	$	1.14	$	1.01

On February 2, 2018, the Company successfully completed a follow-on offering whereby the Company issued 4,761,905 shares of its common stock. The weighted average impact for the six months ended June 29, 2018 was 3,872,318 shares.