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INVESTMENTS IN SUBSIDIARIES AND OTHER PROPERTY (Tables)

12 Months Ended

Dec. 31, 2011

INVESTMENTS IN SUBSIDIARIES AND OTHER PROPERTY [Abstract]

Investments in Subsidiaries and Other Property

			2011			2010
	NVE
		Investments held in Rabbi Trust⁽¹⁾	$	29,182		$	29,348
		Cash Value-Life Insurance		2,735			2,646
		Non-utility property of NEICO		5,517			5,659
		Property not designated for Utility use		19,235			23,608
		Other non-utility property		352			352
			$	57,021		$	61,613

			2011			2010
	NPC
		Investments held in Rabbi Trust⁽¹⁾	$	23,675		$	23,810
		Cash Value-Life Insurance		2,735			2,646
		Non-utility property of NEICO		5,517			5,659
		Property not designated for Utility use		18,841			23,190
			$	50,768		$	55,305

			2011			2010
	SPPC
		Investments held in Rabbi Trust⁽¹⁾	$	5,507		$	5,538
		Property not designated for Utility use		394			418
			$	5,901		$	5,956