Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
OPERATING ACTIVITIES:
Net income before noncontrolling interest	$ 29,944	$ 43,795
Adjustments to reconcile net income before noncontrolling interest to net cash provided by operating activities:
Depreciation and amortization	42,649	37,877
Deferred income taxes	(5,445)	1,283
Stock-based compensation	1,383	1,633
Unrealized loss on California Water Service Group stock	527	0
Gain on sale of real estate investments	0	(6,903)
Gain on sale of California Water Service Group stock	(104)	0
Changes in operating assets and liabilities:
Accounts receivable and accrued unbilled utility revenue	(15,190)	(18,335)
Accounts payable and other current liabilities	3,493	2,215
Accrued groundwater extraction charges, purchased water and power	8,474	10,850
Tax payable and receivable, and other accrued taxes	12,482	14,228
Postretirement benefits	3,036	3,355
Regulatory assets and liability related to balancing and memorandum accounts	(4,822)	(503)
Other changes, net	(2,716)	(1,528)
NET CASH PROVIDED BY OPERATING ACTIVITIES	73,711	87,967
INVESTING ACTIVITIES:
Company-funded	(97,753)	(103,417)
Contributions in aid of construction	(5,908)	(2,631)
Additions to real estate investments	(123)	(116)
Payments to retire utility plant, net of salvage	(3,789)	(2,323)
Proceeds from sale of real estate investments	0	11,180
Proceeds from non-refundable deposit	0	3,000
Proceeds from sale of California Water Service Group stock	4,112	0
Payments for business/asset acquisition	(2,496)	(1,149)
NET CASH USED IN INVESTING ACTIVITIES	(105,957)	(95,456)
FINANCING ACTIVITIES:
Borrowings on line of credit	52,000	28,500
Repayments of line of credit	(1,000)	(29,700)
Repayments of long-term borrowings	0	(2,717)
Payment to noncontrolling interest	0	(1,896)
Dividends paid	(17,297)	(13,380)
Receipts of advances and contributions in aid of construction	8,968	10,486
Refunds of advances for construction	(2,075)	(1,982)
Other changes, net	(2,822)	397
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	37,774	(10,292)
NET CHANGE IN CASH AND CASH EQUIVALENTS	5,528	(17,781)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	7,799	25,350
CASH AND CASH EQUIVALENTS, END OF PERIOD	13,327	7,569
Cash paid during the period for:
Interest	19,705	18,383
Income taxes	5,145	14,552
Supplemental disclosure of non-cash activities:
Change in accrued payables for construction costs capitalized	1,221	11,241
Utility property installed by developers	$ 567	$ 874