Basic earnings per share is computed by dividing net income, after the deduction of preferred stock dividends and undistributed earnings allocated to participating securities, by the weighted average number of common shares outstanding during the period. Diluted earnings per share assumes the issuance of common stock for all potentially dilutive share equivalents outstanding not classified as participating securities. Participating securities are defined as unvested stock-based payment awards that contain nonforfeitable rights to dividends.



Amounts attributable to MSA Safety Incorporated common shareholders:
(In thousands, except per share amounts)	2019			2018			2017
Net income	$	136,440		$	124,150		$	26,027
Preferred stock dividends	(42		)	(42		)	(42		)
Net income available to common equity	136,398			124,108			25,985
Dividends and undistributed earnings allocated to participating securities	$	(183	)	$	(117	)	$	(62	)
Net income available to common shareholders	$	136,215		$	123,991		$	25,923

Basic weighted-average shares outstanding	38,653			38,362			37,997
Stock options and other stock compensation	536			599			700
Diluted weighted-average shares outstanding	39,189			38,961			38,697

Antidilutive stock options	—			—			—

Earnings per share:
Basic	$	3.52		$	3.23		$	0.68
Diluted	$	3.48		$	3.18		$	0.67