Earnings/(loss) per share (Tables)

12 Months Ended

Dec. 31, 2011

Computation Of Basic And Diluted Earnings Per Share

	Twelve months ended December 31,
	2011			2010			2009
	(Restated, see note 2)			(Restated, see note 2)
Basic:
Net income / (loss) from continuing operations, net of noncontrolling interests in subsidiaries	$	(1,323,384	)	$	(129,668	)	$	72,677
Income / (loss) on discontinued operations		0			(8,405	)		8,360
Net income / (loss)		(1,323,384	)		(138,073	)		81,037
Weighted average shares of common stock outstanding (used to calculate basic EPS)		72,172			70,058			53,772
Net effect of dilutive employee stock options based on the treasury stock method		136			270			208
Weighted average shares of common stock outstanding (used to calculate diluted EPS)		72,308			70,328			53,980
Net income / (loss) per common share—basic:
Continuing operations	$	(18.34	)	$	(1.85	)	$	1.35
Discontinued operations	$	0.00		$	(0.12	)	$	0.16
	$	(18.34	)	$	(1.97	)	$	1.51
Net income / (loss) per common share—diluted:
Continuing operations	$	(18.34	)	$	(1.85	)	$	1.35
Discontinued operations	$	0.00		$	(0.12	)	$	0.15
	$	(18.34	)	$	(1.97	)	$	1.50