Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
OPERATING ACTIVITIES:
Net income before noncontrolling interest	$ 19,635	$ 14,156
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	31,576	28,389
Deferred income taxes	(2,939)	(2,129)
Stock-based compensation	1,604	879
Unrealized loss on California Water Service Group stock	0	527
Gain on sale of real estate investments	(745)	0
Loss on sale of California Water Service Group stock	0	87
Changes in operating assets and liabilities:
Accounts receivable and accrued unbilled utility revenue	(11,275)	(9,359)
Accounts payable and other current liabilities	830	1,414
Accrued groundwater extraction charges, purchased water and power	3,931	4,173
Tax payable and receivable, and other accrued taxes	(41)	5,607
Postretirement benefits	1,942	2,388
Regulatory assets and liability related to balancing and memorandum accounts	6,237	1,399
Other changes, net	(998)	(2,105)
NET CASH PROVIDED BY OPERATING ACTIVITIES	49,757	45,426
INVESTING ACTIVITIES:
Company-funded	(62,330)	(62,091)
Contributions in aid of construction	(7,800)	(3,091)
Additions to real estate investments	(137)	(123)
Payments to retire utility plant, net of salvage	(3,009)	(2,787)
Proceeds from sale of real estate investments	745	0
Proceeds from sale of California Water Service Group stock	0	714
NET CASH USED IN INVESTING ACTIVITIES	(72,531)	(67,378)
FINANCING ACTIVITIES:
Borrowings on line of credit	66,000	34,000
Repayments of line of credit	(111,000)	0
Long-term borrowings	80,000	0
Payment to noncontrolling interest	(224)	0
Debt issuance and broker fee costs	(847)	0
Dividends paid	(17,060)	(11,520)
Receipts of advances and contributions in aid of construction	7,836	4,560
Refunds of advances for construction	(1,390)	(1,251)
Other changes, net	586	(2,710)
NET CASH PROVIDED BY FINANCING ACTIVITIES	23,901	23,079
NET CHANGE IN CASH AND CASH EQUIVALENTS	1,127	1,127
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	420,722	7,799
CASH AND CASH EQUIVALENTS, END OF PERIOD	421,849	8,926
Cash paid during the period for:
Interest	13,332	13,240
Income taxes	9,581	420
Supplemental disclosure of non-cash activities:
Change in accrued payables for construction costs capitalized	2,348	1,657
Utility property installed by developers	$ (109)	$ 565