Accrued Liabilities and Deferred Credits (Tables)

12 Months Ended

Dec. 31, 2012

Accrued Liabilities and Deferred Credits

Accrued liabilities and deferred credits as of December 31, 2012 and 2011 consist of the following:

	2012		2011
Accrued compensation	$	3,529	$	1,687
Environmental and insurance liabilities		1,621		1,887
Deferred revenue		27,158		29,859
Legal		357		2,972
Other accrued liabilities		9,687		11,086
Total accrued liabilities and deferred credits	$	42,352	$	47,491