Earnings Per Share

12 Months Ended

Dec. 31, 2020

The following table sets forth the computation of basic and diluted earnings (loss) per share (EPS):


	Year Ended December 31,
In thousands, except per share data	2020		2019		2018
Net income (loss) available to common shareholders	$	(57,955)	$	49,006	$	(99,250)

Weighted average common shares outstanding - Basic	40,253		39,556		39,244
Dilutive effect of stock-based awards	—		424		—
Weighted average common shares outstanding - Diluted	40,253		39,980		39,244
Net income (loss) per common share - Basic	$	(1.44)	$	1.24	$	(2.53)
Net income (loss) per common share - Diluted	$	(1.44)	$	1.23	$	(2.53)

Stock-based Awards

For stock-based awards, the dilutive effect is calculated using the treasury stock method. Under this method, the dilutive effect is computed as if the awards were exercised at the beginning of the period (or at time of issuance, if later) and assumes the related proceeds were used to repurchase our common stock at the average market price during the period. Related proceeds include the amount the employee must pay upon exercise and the future compensation cost associated with the stock award. Approximately 0.7 million, 0.4 million, and 1.1 million stock-based awards were excluded from the calculation of diluted EPS for the years ended December 31, 2020, 2019, and 2018, respectively, because they were anti-dilutive. These stock-based awards could be dilutive in future periods.