Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2014

Earnings Per Share [Abstract]

Calculation of basic and diluted earnings per share

Basic and diluted earnings per share were calculated as follows, for each period presented:

	Quarter Ended
	March 31,
	2014		2013
Numerator:
Net income	$	15.8	$	33.5
Denominator — Weighted-average common shares outstanding (in thousands):
Basic1	17,921		19,143
Add: dilutive effect of non-vested common shares, restricted stock units, performance shares and market-based shares	122		131
Add: dilutive effect of warrants	471		92
Diluted2	18,514		19,366
Earnings per common share, Basic:
Net income per share	$	0.88	$	1.75
Earnings per common share, Diluted:
Net income per share	$	0.85	$	1.73

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¹  The basic weighted-average number of common shares outstanding during the period excludes non-vested common shares, restricted stock units, performance shares and market-based shares.

²  The diluted weighted-average number of common shares outstanding during the periods were calculated using the treasury method.