Note 11. Earnings (Loss) per Common Share

Basic earnings or loss per share attributable to the Company’s common stockholders is computed by dividing net earnings or loss attributable to common stockholders by the weighted average number of common shares outstanding for the period. Diluted earnings or loss per share attributable to common stockholders presents the dilutive effect, if any, on a per share basis of potential common shares (such as restricted stock units) as if they had been vested or converted during the periods presented. No such items were included in the computation of diluted loss per share for the six months ended June 30, 2018 because the Company incurred a net loss in the period and the effect of inclusion would have been anti-dilutive. All of the shares outstanding and per share amounts have been retroactively adjusted to reflect the stock-split in the Company’s condensed consolidated financial statements.


	Three months ended				Six months ended
	June 30,				June 30,
Computation of Income per Share	2018		2017		2018		2017
	(in millions, except for per share data)
Net income (loss)	$	25.2	$	5.0	$	(177.5)	$	77.4

Basic weighted-average shares		81,868,508		74,309,106		83,159,949		70,413,415
Effect of dilutive securities:
Restricted stock awards		784,207		24,319		—		24,319
Diluted weighted-average shares		82,652,715		74,333,425		83,159,949		70,437,734

Basic net income (loss) per share	$	0.31	$	0.07	$	(2.13)	$	1.10
Diluted net income (loss) per share	$	0.31	$	0.07	$	(2.13)	$	1.10