Regulatory Assets And Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Regulatory Assets And Liabilities [Abstract]

Components Of Regulatory Assets And Regulatory Liabilities

	December 31, 2019				December 31, 2018
		Regulatory		Regulatory		Regulatory		Regulatory
		Assets		Liabilities		Assets		Liabilities
Income taxes	$	736,120	$	389,424	$	657,378	$	414,787
Customer refunds resulting from TCJA		-		3,907		-		4,593
Utility plant retirement costs		7,873		43,742		6,743		38,435
Post-retirement benefits		110,661		78,557		110,719		71,285
Accrued vacation		2,439		-		2,447		-
Water tank painting		6,175		1,928		2,864		1,855
Fair value adjustment of long-term debt assumed in acquisition		2,166		-		2,533		-
Debt refinancing		6,564		-		-		-
Rate case filing expenses and other		6,134		41		5,392		72
	$	878,132	$	517,599	$	788,076	$	531,027