Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventories [Abstract]

Schedule Of Major Components Of Inventories

	March 31, 2012		December 31, 2011
Crude oil	$	9,991	$	11,701
Petroleum products		76,494		70,769
Caustic soda		11,570		11,312
NaHS		5,369		7,337
Other		8		5
Total inventories	$	103,432	$	101,124