Equity-Based Compensation (CPE Inc. only) (Tables)

6 Months Ended

Jun. 30, 2013

Equity-Based Compensation (CPE Inc. only)

Summary of restricted stock and restricted stock unit award activity

A summary of restricted stock and restricted stock unit award activity is as follows (in thousands, except per share data):

			Weighted
			Average
			Grant-Date
	Number		Fair Value
			(per share)
Non-vested shares at January 1, 2013	304		$	18.46
Granted	146		17.77
Forfeited	(2	)	17.83
Vested	(55	)	16.22
Non-vested shares at June 30, 2013	393		$	18.52

Summary of performance based share unit awards activity

A summary of performance-based share unit award activity is as follows (in thousands, except per share data):

			Weighted
			Average
			Grant-Date
	Number		Fair Value
			(per share)
Non-vested units at January 1, 2013	376		$	18.66
Granted	228		20.24
Forfeited	(4	)	18.85
Vested	—		—
Non-vested units at June 30, 2013	600		$	19.26

Summary of assumptions used to estimate the fair value of the performance-based share units

The assumptions used to estimate the fair value of the performance-based share units granted on March 11, 2013 are as follows:

Risk-free interest rate	0.4		%
Expected volatility	42.54		%
Term	3 years
Fair value (per share)	$	20.24

Summary of non-qualified stock option activity

A summary of non-qualified stock option activity is as follows (in thousands, except per option and year amounts):

					Weighted-
			Weighted-		Average
			Average		Remaining	Aggregate
			Exercise		Contractual	Intrinsic
	Number		Price		Term	Value (1)
			(per option)		(years)
Options outstanding at January 1, 2013	1,332		$	15.95	7.38	$	4,720
Granted	229		17.50			—
Exercised	(62	)	15.00			271
Forfeited	(6	)	16.72
Options outstanding at June 30, 2013	1,494		$	16.23	7.33	$	1,313
Exercisable at June 30, 2013	931		$	15.07	6.41	$	1,313
Vested and expected to vest at June 30, 2013	1,472		$	16.21	7.31	$	1,313

(1) The intrinsic value of a stock option is the amount by which the market value of the underlying stock exceeds the exercise price of the option at period-end.

Schedule of assumptions used to estimate the fair value of options granted

The assumptions used to estimate the fair value of options granted on March 11, 2013 are as follows:

Risk-free interest rate	1.4		%
Expected option life	6.5 years
Expected volatility	49.7		%
Fair value (per option)	$	8.72