Regulatory Assets And Liabilities (Tables)

12 Months Ended

Dec. 31, 2012

Regulatory Assets And Liabilities [Abstract]

Components Of Regulatory Assets And Regulatory Liabilities

	December 31,				December 31,
	2012				2011
		Regulatory		Regulatory		Regulatory		Regulatory
		Assets		Liabilities		Assets		Liabilities
Income taxes	$	348,359	$	192,551	$	102,726	$	1,706
Utility plant retirement costs		16,976		19,936		21,975		15,845
Post-retirement benefits		139,139		28,795		100,640		22,961
Water tank painting		2,836		-		4,420		-
Fair value adjustment of long-term
debt assumed in acquisition		4,739		-		1,540		162
Rate case filing expenses & other		9,215		81		8,731		670
	$	521,264	$	241,363	$	240,032	$	41,344