Reconciliation of Basic and Diluted Shares (Tables)

3 Months Ended

Mar. 31, 2023

Earnings Per Share [Abstract]

Reconciliation of basic and diluted shares

	Three Months Ended
	March 31
(In thousands, except per share amounts)	2023		2022
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(9,557)	$	(7,333)
Weighted-average shares outstanding:
Weighted-average shares outstanding - basic	79,633		79,363
Dilutive effect of stock-based compensation	—		—
Weighted-average shares outstanding - diluted	79,633		79,363
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(0.12)	$	(0.09)
Diluted	$	(0.12)	$	(0.09)

Schedule of antidilutive securities excluded from computation of earnings per share

The following average outstanding stock-based compensation units were not included in the computation of diluted earnings per share because the effect was either antidilutive or the market conditions for the performance share units were not met:

	Three Months Ended
	March 31
(In thousands)	2023	2022
Restricted stock units	1,000	825
Stock appreciation rights	2,473	2,653
Performance share units	1,394	1,226