Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Data

	Quarters Ended
	December 31			September 30			June 30			March 31
2012
Operating revenues	$	22,614		$	55,907		$	30,357		$	30,518
Operating income (loss)		(9,258	)		15,360			(2,367	)		(1,601	)
Net income (loss) attributable to the Company		(8,630	)		15,340			176			(874	)
Basic and diluted income (loss) per share attributable to the Company	$	(0.09	)	$	0.17		$	—		$	(0.01	)
2011
Operating revenues	$	19,820		$	26,745		$	25,284		$	73,436
Operating loss		(383,863	)		(4,198	)		(20,576	)		21,330
Net income (loss) attributable to the Company		(328,611	)		(2,431	)		(13,336	)		14,099
Basic and diluted income (loss) per share attributable to the Company	$	(3.56	)	$	(0.03	)	$	(0.14	)	$	0.15

Quarterly Financial Information Pre-Tax Charges

Quarterly results included the following significant pre-tax charges:

	Quarters Ended
	December 31			September 30		June 30		March 31
2012
Impairment losses	$	2,551		$	—	$	—	$	—
Restructuring charge (benefit)		(91	)		18		18		55
2011
Impairment losses	$	374,846		$	—	$	1,697	$	782
Restructuring charge		797			348		5,926		4,476