13 .	Net Income ( Loss ) per Share

Basic net income (loss) per share is computed by dividing the net income (loss) by the weighted-average number of shares of common stock outstanding during the period. Diluted net income (loss) per share is computed by giving effect to all potential shares of common stock, including stock options, restricted stock units and performance share awards, to the extent dilutive. Performance-based performance share awards are considered dilutive when the related performance conditions have been met assuming the end of the reporting period represents the end of the performance period. In periods with a net loss from continuing operations, all potential shares of common stock are excluded from the computation of diluted net loss per share as the impact would be antidilutive.

Net income (loss) per basic and diluted weighted-average common share outstanding was calculated as follows (in thousands, except per share amounts):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018		2017			2018		2017

Income (loss) from continuing operations	$	27,801	$	(1,587	)	$	20,164	$	(6,550	)
Loss on discontinued operations		-		(482	)		-		(1,455	)
Net income (loss)	$	27,801	$	(2,069	)	$	20,164	$	(8,005	)

Basic weighted-average common shares outstanding		9,735		9,620			9,723		9,611
Effect of potentially dilutive common shares (1)		-		-			9		-
Diluted weighted-average common shares outstanding		9,735		9,620			9,732		9,611

Income (loss) per basic common share:
Continuing operations	$	2.86	$	(0.16	)	$	2.07	$	(0.68	)
Discontinued operations		-		(0.05	)		-		(0.15	)
Net income (loss) per share	$	2.86	$	(0.21	)	$	2.07	$	(0.83	)

Income (loss) per diluted common share:
Continuing operations	$	2.86	$	(0.16	)	$	2.07	$	(0.68	)
Discontinued operations		-		(0.05	)		-		(0.15	)
Net income (loss) per share assuming dilution	$	2.86	$	(0.21	)	$	2.07	$	(0.83	)

(

)

The weighted-average number of such antidilutive shares

not

included in the computation of diluted net income per share for the

three

and

nine

months ended

September

30,

2018

was approximately

64,000

and

62,000,

respectively, including approximately

40,000

and

38,000,

respectively, of performance-based share awards, at the target level of

100%,

that were

not

included because the performance conditions had

not

been met as of

September

30,

2018.

The weighted-average number of such antidilutive shares

not

included in the computation of diluted net loss per share for the

three

and

nine

months ended

September

30,

2017

was approximately

194,000

and

195,000,

respectively.