Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share

Amounts attributable to MSA Safety Incorporated common shareholders:	Three Months Ended March 31,
(In thousands, except per share amounts)	2017			2016
Net income from continuing operations	$	14,413		$	12,683
Preferred stock dividends	(10		)	(10		)
Income from continuing operations available to common equity	14,403			12,673
Dividends and undistributed earnings allocated to participating securities	(17		)	(20		)
Income from continuing operations available to common shareholders	14,386			12,653
Net (loss) income from discontinued operations	$	—		$	(932	)
Preferred stock dividends	—			—
(Loss) income from discontinued operations available to common equity	—			(932		)
Dividends and undistributed earnings allocated to participating securities	—			1
(Loss) income from discontinued operations available to common shareholders	—			(931		)
Basic weighted-average shares outstanding	37,766			37,330
Stock options and other stock compensation	827			429
Diluted weighted-average shares outstanding	38,593			37,759
Antidilutive stock options	—			893
Earnings per share attributable to continuing operations:
Basic	$	0.38		$	0.34
Diluted	$	0.37		$	0.34
(Loss) earnings per share attributable to discontinued operations:
Basic	$	—		$	(0.03	)
Diluted	$	—		$	(0.03	)