Earnings (Loss) Per Share

6 Months Ended

Jun. 30, 2021

Basic earnings (loss) per share is computed in accordance with ASC 260, Earnings Per Share, based on weighted average outstanding common shares. Diluted earnings (loss) per share is computed based on basic weighted average outstanding common shares adjusted for the dilutive effect of stock options, RSUs, and certain contingently issuable shares for which performance targets have been achieved.

The following table reconciles the weighted average share amounts used to compute both basic and diluted earnings (loss) per share (in thousands):


	Three Months Ended June 30,		Six Months Ended June 30,
	2021	2020	2021	2020
Weighted average shares outstanding:
Basic weighted average shares outstanding	117,718	116,033	117,605	116,019
Add: Dilutive effect of stock options and RSUs	1,292	1,231	1,353	—
Diluted weighted average shares outstanding	119,010	117,264	118,958	116,019

The diluted earnings per share computation excludes 1.3 million and 1.8 million options to purchase shares, RSUs, and contingently issuable shares during the three months ended June 30, 2021 and 2020, respectively, as their effect would be anti-dilutive. The diluted earnings (loss) per share computation excludes 1.4 million and 6.1 million options to purchase shares, RSUs, and contingently issuable shares during the six months ended June 30, 2021 and 2020, respectively, as their effect would be anti-dilutive.

Common stock outstanding as of June 30, 2021, and December 31, 2020, was 117,484,424 and 117,112,185, respectively.