The following table provides a reconciliation of the components used in the calculation of basic and diluted earnings per share for the periods presented:



	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2012			2011			2012			2011
Net loss¹	$	(32,611	)	$	(6,718	)	$	(50,148	)	$	(104,976	)
Weighted-average shares, basic	46,050			45,817			46,009			45,758
Effect of dilutive securities²	—			—			—			—
Weighted-average shares, diluted	46,050			45,817			46,009			45,758

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¹Includes a $2.2 million benefit for the three and nine month periods ended September 30, 2012 attributable to a change in the estimated effective state tax rate due primarily to changes in the number of states in which we will have taxable operations subsequent to the sale of our Appalachian assets.

²For each of the three and nine month periods ended September 30, 2012 and 2011, an amount less than 0.1 million of potentially dilutive securities, including the Convertible Notes, stock options, restricted stock and restricted stock units, had the effect of being anti-dilutive and were excluded from the calculation of diluted earnings per common share.