Basic and diluted net loss per share is based upon the weighted average number of common shares outstanding during the period. Common stock equivalents consist of incremental common shares issuable upon the exercise of stock options, and the release (vesting) of restricted stock units and awards and are calculated under the treasury stock method. Common stock equivalent shares from unexercised stock options, and unvested restricted stock units and awards are excluded from the computation for periods in which we incur a net loss or if the exercise price of such options is greater than the average market price of our common stock for the period as their effect would be anti-dilutive.

For the three months ended September 28, 2019 and September 29, 2018, potential shares from stock options, RSUs and Restricted Stock Awards (“RSAs”) totaling 1,182,083 and 1,436,320 shares, respectively, were excluded from the computation of diluted weighted average shares outstanding. For the nine months ended September 28, 2019 and September 29, 2018, potential shares from stock options, RSUs and Restricted Stock Awards (“RSAs”) totaling 1,144,817 and 1,253,843 shares, respectively, were excluded from the computation of diluted weighted average shares outstanding.

A reconciliation of the numerator and denominator of basic and diluted net loss per common share is provided as follows:

	Three Months Ended						Nine Months Ended
(in thousands except per share data)	September 28, 2019			September 29, 2018			September 28, 2019			September 29, 2018
Numerator:
Net loss	$	(1,785	)	$	(3,074	)	$	(7,252	)	$	(9,957	)
Denominator:
Weighted average shares of common stock (basic)		13,768			11,925			13,682			11,732

Weighted average shares of common stock (diluted)		13,768			11,925			13,682			11,732
Per share data:
Basic net loss per share	$	(0.13	)	$	(0.26	)	$	(0.53	)	$	(0.85	)
Diluted net loss per share	$	(0.13	)	$	(0.26	)	$	(0.53	)	$	(0.85	)