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EARNINGS (LOSS) PER COMMON SHARE
12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
EARNINGS (LOSS) PER COMMON SHARE EARNINGS (LOSS) PER COMMON SHARE
Basic earnings (loss) per share is computed by dividing Net income (loss) by the number of weighted average common shares outstanding during the reporting period. Diluted earnings per share is calculated to give effect to all potentially dilutive common shares that were outstanding during the reporting period, only in the periods in which such effect is dilutive.
The following table shows the effect of stock-based awards on the weighted average number of shares outstanding used in calculating diluted earnings per share:
In millions, except per share data
Year Ended December 31,
202220212020
Weighted average common shares outstanding - basic92.1 91.8 91.5 
Incremental shares outstanding related to stock-based awards (1)
0.3 — — 
Weighted average common shares outstanding - diluted92.4 91.8 91.5 
(1)In periods of net loss, stock-based awards are anti-dilutive and therefore excluded from the earnings (loss) per share calculation.
Anti-dilutive stock-based awards excluded from the computation of diluted earnings (loss) per share using the treasury stock method includes the following:
In thousands
Year Ended December 31,
202220212020
Option awards1,2411,8973,017
RSU awards45634
PSUs are offered to key employees and are subject to achievement of specified performance conditions. Contingently issuable shares are excluded from the computation of diluted earnings per share based on current period results. The shares would not be issuable if the end of the year were the end of the contingency period. If such goals are not met, no compensation expense is recognized, and any previously recognized compensation expense is reversed.