Reconciliation of Basic and Diluted Shares (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Reconciliation of basic and diluted shares

	Three Months Ended					Six Months Ended
	June 30					June 30
(In thousands, except per share amounts)	2014			2013		2014			2013
Income (loss) from continuing operations attributable to Harsco Corporation common stockholders	$	(15,065	)	$	24,331	$	(3,523	)	$	31,973
Weighted-average shares outstanding - basic	80,885			80,760		80,850			80,733
Dilutive effect of stock-based compensation	—			244		—			234
Weighted-average shares outstanding - diluted	$	80,885		$	81,004	$	80,850		$	80,967
Earnings (loss) from continuing operations per common share, attributable to Harsco Corporation common stockholders:
Basic	$	(0.19	)	$	0.30	$	(0.04	)	$	0.40
Diluted	$	(0.19	)	$	0.30	$	(0.04	)	$	0.39

Schedule of antidilutive securities excluded from computation of earnings per share

The following average outstanding stock-based compensation units were not included in the three and six months ended computation of diluted earnings per share because the effect was antidilutive:

	Three Months Ended		Six Months Ended
	June 30		June 30
(In thousands)	2014	2013	2014	2013
Restricted stock units	311	—	311	—
Stock options	215	304	215	304
Stock appreciation rights	968	190	968	95
Performance share units	97	—	97	—