13. Net Loss per Share

Basic net loss per share is computed by dividing the net loss by the weighted average shares outstanding. Diluted loss per share is computed by dividing the net loss by the weighted average diluted shares outstanding.

The computation of basic and diluted loss per share is as follows (in thousands, except share and per share data):


	Year Ended December 31,
	2018		2017		2016
			(as adjusted)		(as adjusted)
Net loss	$	(24,407)	$	(31,790)	$	(38,333)
Weighted average common shares outstanding:
Basic		22,912,217		22,779,377		22,692,139
Dilutive common stock options, restricted stock unit awards and restricted stock awards		—		—		—
Diluted		22,912,217		22,779,377		22,692,139
Basic loss per share of common stock	$	(1.07)	$	(1.40)	$	(1.69)
Diluted loss per share of common stock	$	(1.07)	$	(1.40)	$	(1.69)

The Company had a net loss in the years ended December 31, 2018, 2017 and 2016. As a result, all stock options, restricted stock unit awards, and restricted stock awards were anti-dilutive and excluded from weighted average shares used in determining the diluted loss per share of common stock for the respective periods.

The following weighted average numbers of stock options, restricted stock unit awards, and restricted stock awards, in each case as adjusted for the 5% stock dividend paid to shareholders on May 29, 2018, have been excluded from the calculation of diluted loss per share of common stock, as their effect would be anti-dilutive for the years ended December 31, 2018, 2017 and 2016:


	Year Ended December 31,
	2018		2017		2016
			(as adjusted)		(as adjusted)
Stock options		240,700		355,264		432,337
Restricted stock units		552,458		348,826		281,875
Restricted stock awards		67,052		76,960		80,116
Total		860,210		781,050		794,328