Commitments, Contingencies And Uncertainties (Tables)

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Costs Incurred To Comply With Federal Environment Statutes

The Company incurred the following expenditures during the three and twelve months ended March 31, 2012 and 2011 to comply with federal environmental statutes (in thousands):



	Three Months Ended				Twelve Months Ended
	March 31,				March 31,
	2012		2011		2012		2011
Clean Air Act (1)	$	229	$	58	$	887	$	456
Clean Water Act	46		56		254		200

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(1) Includes an accrual of $0.2 million, in the first quarter of 2012, related to Four Corners generating station discussed below.

Allowance for Emissions [Table Text Block]

The Company has purchased allowances and expensed the following costs to meet its annual requirements (in thousands):

- Definition

The entire disclosure for environmental loss contingencies, such as presence of hazardous waste, relevant information from reports issued by regulators, and estimated costs to achieve compliance with regulatory requirements. This element may be used for all of an entity's disclosures about environmental loss contingencies.

+ References+ Details

Compliance Year