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Consolidated Statement of Cash Flows
$ in Thousands
 12 Months Ended
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Operating activities:      
Net income $ 52,839 $ 37,882 $ 51,806
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 46,295 42,330 39,491
Deferred income taxes 4,803 15,625 26,067
Share-based compensation 1,691 1,603 1,031
Gain on sale of real estate investment (10,419) (1,886) (554)
Gain on sale of California Water Service Group stock (3,197) 0 (2,017)
Changes in operating assets and liabilities:      
Accounts receivable and accrued unbilled utility revenue (5,377) 735 (1,276)
Accounts payable and other current liabilities (337) 1,550 (403)
Accrued groundwater extraction charges, purchased water and power 3,683 1,133 (1,751)
Tax receivable and accrued taxes (680) (3,297) (5,546)
Postretirement benefits (349) (117) (325)
Regulatory asset related to balancing and memorandum accounts 19,297 1,429 (39,727)
Other noncurrent assets and noncurrent liabilities 5,468 1,950 (2,001)
Other changes, net 355 (1,680) 1,116
Net cash provided by operating activities 114,072 97,257 65,911
Investing activities:      
Company-funded (129,134) (96,012) (91,846)
Contributions in aid of construction (13,086) (10,762) (10,090)
Additions to real estate investment (328) (1,097) (13)
Payments for business/asset acquisition and water rights (1,070) (991) (1,768)
Cost to retire utility plant, net of salvage (3,361) (3,673) (1,551)
Proceeds from sale of real estate investment 20,341 1,925 4,572
Proceeds from sale of California Water Service Group stock 4,509 0 3,056
Net cash used in investing activities (122,129) (110,610) (97,640)
Financing activities:      
Borrowings from lines of credit 62,075 97,000 57,200
Repayments of lines of credit (82,475) (75,600) (66,400)
Long-term borrowings 50,999 0 50,000
Long-term borrowings held as restricted cash 19,001 0 0
Repayments of long-term borrowings (16,599) (633) (602)
Debt issuance costs (1,275) 0 (528)
Dividends paid (16,559) (15,885) (15,177)
Exercise of stock options and similar instruments 954 895 1,917
Tax benefits realized from share options exercised 203 634 462
Receipts of advances and contributions in aid of construction 14,366 12,266 7,569
Refunds of advances for construction (2,522) (2,484) (2,612)
Net cash provided by financing activities 28,168 16,193 31,829
Net change in cash, cash equivalents and restricted cash 20,111 2,840 100
Cash and cash equivalents, beginning of year 5,239 2,399 2,299
Cash, cash equivalents and restricted cash, end of year 25,350 5,239 2,399
Cash paid during the year for:      
Interest 23,962 23,634 21,046
Income Taxes Paid, Net 27,517 9,723 6,324
Supplemental disclosure of non-cash activities:      
Increase (Decrease) in accrued payables for construction costs capitalized (3,696) 7,540 (4,981)
Utility property installed by developers 9,614 1,011 6,549
Reconciliation to Consolidated Balance Sheets:      
Cash and cash equivalents 6,349 5,239 2,399
Restricted cash $ 19,001 $ 0 $ 0