8. Net Loss Per Share

The Company calculates earnings per share (“EPS”) as required by FASB ASC Topic No. 260, Earnings Per Share. Basic EPS is calculated by dividing the net income available to common stockholders by the weighted average number of common shares outstanding for the period, excluding common stock equivalents. Diluted EPS is computed by dividing the net income available to common stockholders by the weighted average number of common shares outstanding for the period, plus the weighted average number of dilutive common stock equivalents outstanding for the period determined using the treasury-stock method. For purposes of this calculation, common stock subject to repurchase by the Company and options are considered to be common stock equivalents, and are only included in the calculation of diluted earnings per share when their effect is dilutive.

	Year Ended December 31,
	2017			2016			2015
	(in thousands, except per share amounts)
Numerator:
Net loss available to common stockholders	$	(6,661	)	$	(15,343	)	$	(2,602	)
Denominator:
Weighted average shares outstanding - basic		13,489			11,951			11,486
Potential common shares - options (treasury stock method)		—			—			—
Weighted average shares outstanding - diluted		13,489			11,951			11,486
Shares excluded (anti-dilutive)		—			—			17
Shares excluded due to an exercise price greater than weighted average stock price for the period		1,839			2,094			383
Net loss per common share:
Basic	$	(0.49	)	$	(1.28	)	$	(0.23	)
Diluted	$	(0.49	)	$	(1.28	)	$	(0.23	)