Capital Stock

12 Months Ended

Dec. 31, 2022

Equity [Abstract]

Capital Stock

Capital Stock

The authorized capital stock of the Company consists of 150,000,000 shares of common stock and 4,000,000 shares of preferred stock, both having a par value of $1.25 per share. The preferred stock is issuable in series with terms as fixed by the Board. No preferred stock has been issued. The following table summarizes the Company's common stock activity during the period from January 1, 2020 to December 31, 2022:

	Shares Issued	Treasury Shares (a)	Outstanding Shares
Outstanding, January 1, 2020	114,720,347	36,205,589	78,514,758
Shares issued for vested restricted stock units	229,413	91,188	138,225
Shares issued for vested performance stock units	471,412	206,261	265,151
Stock appreciation rights exercised	8,870	2,634	6,236
Outstanding, December 31, 2020	115,430,042	36,505,672	78,924,370
Shares issued for vested restricted stock units	305,535	112,275	193,260
Shares issued for vested performance stock units	124,077	54,950	69,127
Stock appreciation rights exercised	46,739	17,950	28,789
Outstanding, December 31, 2021	115,906,393	36,690,847	79,215,546
Shares issued for vested restricted stock units	341,051	131,089	209,962
Shares issued for vested restricted stock awards	87,765	40,304	47,461
Stock appreciation rights exercised	23,311	6,640	16,671
Outstanding, December 31, 2022	116,358,520	36,868,880	79,489,640

The following is a reconciliation of the average shares of common stock used to compute basic earnings per common share to the shares used to compute diluted earnings per common share as shown on the Consolidated Statements of Operations:

(In thousands, except per share data)	2022		2021		2020
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(137,155)	$	22,137	$	(49,727)
Weighted-average shares outstanding—basic	79,493		79,234		78,939
Dilutive effect of stock-based compensation	—		1,055		—
Weighted-average shares outstanding—diluted	79,493		80,289		78,939
Income (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(1.73)	$	0.28	$	(0.63)
Diluted	$	(1.73)	$	0.28	$	(0.63)

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

(In thousands)	2022	2021	2020
Restricted stock units	672	—	714
Stock appreciation rights	2,092	826	2,474
Performance share units	1,040	865	887