3. EARNINGS PER SHARE

Basic earnings per share are computed using net income and the weighted average number of common shares outstanding for each period presented. Diluted earnings per share are computed in the same manner, except using the weighted average number of common shares outstanding plus the effects of the assumed exercise of stock options and the payment of estimated stock awards from other stock-based compensation plans that are outstanding at the end of each period presented. Antidilutive stock awards are excluded from the calculation of diluted earnings per common share.

Diluted earnings (loss) from continuing operations per share are calculated as follows:



	Three Months Ended June 30,					Six Months Ended June 30,
In thousands, except per share data	2018			2017		2018		2017
Net income (loss) from continuing operations	$	(339	)	$	4,075	$	41,672	$	45,472
Average common shares outstanding - basic	28,791			28,648		28,772		28,641
Additional shares for stock-based compensation plans (See Note 6)	—			69		53		81
Average common shares outstanding - diluted	28,791			28,717		28,825		28,722
Earnings (loss) from continuing operations per share of common stock - basic	$	(0.01	)	$	0.14	$	1.45	$	1.58
Earnings (loss) from continuing operations per share of common stock - diluted	$	(0.01	)	$	0.14	$	1.45	$	1.58
Additional information:
Antidilutive shares	53			32		10		21