Other Operating Revenues and Expenses (Tables)

12 Months Ended

Dec. 31, 2012

Other Cost and Expense Disclosure, Operating [Abstract]

Schedule of net gain on sales of assets and impairment of inventory

Net other operating revenues and expenses for the years ended December 31, 2012, 2011 and 2010 are as follows:

	2012			2011			2010
	(In thousands)
Other operating revenues:
Gain on sales of assets	$	1,496		$	15,744		$	3,680
Net marketing revenue	581			—			—
Total other operating revenues	$	2,077		$	15,744		$	3,680
Other operating expenses:
Loss on sales of assets	$	(523	)	$	(945	)	$	(1,655	)
Impairment of inventory	(510		)	(721		)	(95		)
Total other operating expenses	$	(1,033	)	$	(1,666	)	$	(1,750	)