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Net Loss Per Share and Shareholders' Equity
 9 Months Ended
Sep. 30, 2016
Earnings Per Share [Abstract]  
Net Loss Per Share and Shareholders' Equity
Net Earnings (Loss) Per Share
The following is a reconciliation of the numerator and denominator of the basic and diluted net earnings (loss) per share (EPS) computations:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2016
 
2015
 
2016
 
2015
 
(in millions, except common share and per common share amounts)
Numerator:
 
 
 
 
 
 
 
Net earnings (loss)
$
6.7

 
$
(11.2
)
 
$
29.4

 
$
(54.3
)
Denominator:
 
 
 
 
 
 
 
Denominator for basic EPS–weighted-average common shares
67,567,671

 
66,900,081

 
67,389,370

 
57,529,038

Dilutive effect of stock-based compensation arrangements
2,661,031

 
—

 
2,630,117

 
—

Denominator for diluted EPS–adjusted weighted-average common shares
70,228,702

 
66,900,081

 
70,019,487

 
57,529,038

 
 
 
 
 
 
 
 
Basic EPS
$
0.10

 
$
(0.17
)
 
$
0.44

 
$
(0.94
)
Diluted EPS
$
0.10

 
$
(0.17
)
 
$
0.42

 
$
(0.94
)

The diluted EPS calculation for the three and nine months ended September 30, 2015 excludes the effect of 266,313 shares of restricted stock, 16,125 restricted stock units and 6,304,927 outstanding stock options as their effect is anti-dilutive. Holders of non-vested stock-based compensation awards do not have voting rights or rights to receive nonforfeitable dividends on the shares covered by the awards.