Earnings Per Share

12 Months Ended

Dec. 31, 2019

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	2019		2018		2017
Net income (loss) available to common shareholders	$	49,006	$	(99,250)	$	57,298

Weighted average common shares outstanding - Basic	39,556		39,244		38,655
Dilutive effect of stock-based awards	424		—		732
Weighted average common shares outstanding - Diluted	39,980		39,244		39,387
Earnings (loss) per common share - Basic	$	1.24	$	(2.53)	$	1.48
Earnings (loss) per common share - Diluted	$	1.23	$	(2.53)	$	1.45

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 future compensation cost associated with the stock award. Approximately 0.4 million, 1.1 million, and 0.2 million shares related to stock-based awards were excluded from the calculation of diluted EPS for the years ended December 31, 2019, 2018, and 2017, respectively, because they were anti-dilutive. These stock-based awards could be dilutive in future periods.