PREPAID AND OTHER CURRENT ASSETS

12 Months Ended

Dec. 31, 2011

PREPAID AND OTHER CURRENT ASSETS

6. PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets consist of the following at the dates indicated (in thousands):

	December 31,
	2011		2010
Prepaid insurance	$	12,028	$	8,865
Insurance receivables related to environmental expenditures		12,724		8,886
Ammonia receivable		1,288		1,295
Margin deposits		9,871		18,833
Prepaid services		8,661		24,359
Unbilled revenue		10,090		3,263
Tax receivable		1,610		120
Prepaid taxes		1,677		5,417
Vendor prepaid		14,903		2,657
Other		19,875		11,994
Total prepaid and other current assets	$	92,727	$	85,689