Property, Plant and Equipment

3 Months Ended

Mar. 31, 2012

Property Plant And Equipment [Abstract]

Property Plant And Equipment Disclosure Text Block

10. Property, Plant and Equipment

The following table sets forth the major classifications of our property, plant and equipment and accumulated depreciation as of March 31, 2012 and 2011 and December 31, 2011:

		March 31,				December 31,
Thousands		2012		2011		2011
Utility plant in service		$	2,342,681	$	2,264,055	$	2,323,467
Utility construction work in progress			34,903		28,464		36,051
Less: Accumulated depreciation			760,566		720,134		749,603
	Utility plant-net		1,617,018		1,572,385		1,609,915
Non-utility plant in service			297,164		292,089		293,205
Non-utility construction work in progress			5,789		8,945		8,379
Less: Accumulated depreciation			19,117		13,505		17,623
	Non-utility plant-net	$	283,836	$	287,529	$	283,961

Total property, plant and equipment		$	1,900,854	$	1,859,914	$	1,893,876

- Definition

The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, income statement disclosures, assets held for sale and public utility disclosures.

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