Basic and diluted earnings per share were computed as follows:



	Three Months Ended June 30,					Six Months Ended June 30,
(in millions, except share and per share amounts)	2018		2017			2018		2017
Earnings (loss) from continuing operations	$	4.4	$	(30.9	)	$	4.0	$	(35.9	)
Earnings from discontinued operations, net	0.2		1.2			0.3		3.0
Net earnings (loss)	$	4.6	$	(29.7	)	$	4.3	$	(32.9	)

Basic earnings (loss) per common share:
Earnings (loss) from continuing operations	$	0.05	$	(0.35	)	$	0.04	$	(0.40	)
Earnings from discontinued operations, net	—		0.02			0.01		0.03
Net earnings (loss)	$	0.05	$	(0.33	)	$	0.05	$	(0.37	)

Weighted-average shares outstanding	90,063,089		89,361,352			89,893,557		89,168,499

Diluted earnings (loss) per common share:
Earnings (loss) from continuing operations	$	0.05	$	(0.35	)	$	0.04	$	(0.40	)
Earnings from discontinued operations, net	—		0.02			0.01		0.03
Net earnings (loss)	$	0.05	$	(0.33	)	$	0.05	$	(0.37	)

Diluted weighted-average shares outstanding	90,731,760		89,361,352			90,718,298		89,168,499

For the three and six months ended June 30, 2018, the weighted-average number of anti-dilutive potential common shares excluded from the diluted earnings per share calculation above was 6,277,283 and 5,892,564, respectively. For the three and six months ended June 30, 2017, the weighted-average number of anti-dilutive potential common shares excluded from the diluted earnings per share calculation above was 4,446,261and 4,245,594, respectively.