Regulatory Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2017

Regulated Operations [Abstract]

Schedule of regulatory assets and liabilities

Regulatory assets and liabilities were comprised of the following as of September 30, 2017 and December 31, 2016:

	September 30, 2017		December 31, 2016
Regulatory Assets
Pension and retiree group health	$	188,386	$	188,880
Property-related temporary differences (tax benefits flowed through to customers)	94,144		92,099
Other accrued benefits	26,540		27,503
Net WRAM and MCBA long-term accounts receivable	34,735		16,148
Asset retirement obligations, net	16,832		15,812
Interim rates long-term accounts receivable	4,616		4,605
Tank coating	10,114		8,452
Health care balancing account	412		1,000
Pension balancing account	1,684		—
Other regulatory assets	2,421		1,431
Total Regulatory Assets	$	379,884	$	355,930
Regulatory Liabilities
Future tax benefits due to customers	$	33,375	$	33,231
Health care balancing account	6,006		—
Conservation program	2,312		584
Pension balancing account	383		695
Net WRAM and MCBA long-term payable	710		611
Other regulatory liabilities	1,251		3,614
Total Regulatory Liabilities	$	44,037	$	38,735