Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2012

Accounting Policies [Abstract]

Net income for purposes of determining basic EPS

Net (loss) income for purposes of determining basic EPS was as follows:

	Three Months Ended
	March 31,
	2012			2011
Net (loss) income	$	(7,690	)	$	19,373
Income attributable to participating securities	—			(397		)
Net (loss) income available to common stockholders	$	(7,690	)	$	18,976

Net income for purposes of determining diluted EPS

Net income for purposes of determining diluted EPS was as follows:

	Three Months Ended
	March 31,
	2012			2011
Net (loss) income	$	(7,690	)	$	19,373
Income attributable to participating securities	—			(397		)
Net (loss) income available to common stockholders	$	(7,690	)	$	18,976

Basic and diluted EPS calculation shares

Basic and diluted EPS were calculated using the following shares:

	Three Months Ended
	March 31,
	2012	2011
Weighted-average shares for basic EPS	79,060,539	78,216,170
Plus incremental shares related to stock options and non-vested restricted stock	—	282,013
Weighted-average shares for fully diluted EPS	79,060,539	78,498,183

Outstanding shares not included in the computation of diluted EPS

The following stock options, non-vested restricted stock and shares issuable upon the conversion of convertible debt were outstanding during the three months ended March 31, 2012 and 2011 but were not included in the computation of diluted EPS.

	Three Months Ended
	March 31,
	2012		2011
Number of stock options	475,483		192,582
Weighted-average exercise price	$	13.60	$	22.25
Weighted-average shares of non-vested restricted stock	383,354		N/A
Weighted-average expense per share	11.60		N/A
Weighted-average number of shares issuable upon   conversion of debt	17,314,667		18,000,339
Weighted-average conversion price	$	14.82	$	14.87