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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Cash Flows From Operating Activities:      
Net Income $ 59,743 $ 60,484 $ 61,058
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 39,109 42,674 41,751
Provision for doubtful accounts 619 870 991
Deferred income taxes and investment tax credits 27,640 10,423 32,316
Stock-based compensation expense 2,538 2,754 2,222
Other - net (397) 838 0
Changes in assets and liabilities:      
Accounts receivable - customers (1,750) (923) 3,979
Unbilled revenue (4,901) 1,932 (2,870)
Other accounts receivable (1,233) 1,243 1,029
Receivables from the U.S. government (2,606) 848 397
Materials and supplies 1,121 (1,827) 970
Prepayments and other current assets 2,239 1,580 973
Costs and estimated earnings in excess of billings on uncompleted contracts (10,433) (3,223) 6,159
Increase (Decrease) in Regulatory Assets and Liabilities (5,610) (26,422) 26,385
Accounts payable (3,442) 679 (1,622)
Income taxes receivable/payable (6,993) 9,630 (11,648)
Billings in excess of costs and estimated earnings on uncompleted contracts (1,501) (7,972) 4,884
Increase (Decrease) in Pension and Postretirement Obligations (289) 616 (2,356)
Other liabilities 3,095 941 (1,348)
Net cash provided 96,949 95,145 163,270
Cash Flows From Investing Activities:      
Capital expenditures (129,867) (87,323) (72,553)
Payments to Acquire Investments (1,354) (2,869) (1,568)
Proceeds from Sale of Property, Plant, and Equipment 0 54 62
Net cash used (131,221) (90,138) (74,059)
Proceeds from Issuance of Common Shares and Stock Option Exercises 235 1,198 589
Cash Flows From Financing Activities:      
Payments for Repurchase of Common Stock 0 (72,893) (17,180)
Tax benefits from exercise of stock-based awards 581 877 533
Receipt of advances for and contributions in aid of construction 6,660 3,731 7,598
Refunds on advances for construction (3,921) (3,660) (3,469)
Retirement or repayments of long-term debt (313) (237) (21,287)
Proceeds from issuance of long-term debt, net of issuance costs 0 0 14,846
Net change in notes payable to banks 62,000 28,000 0
Dividends paid (33,408) (32,690) (32,111)
Other (1,490) (957) (968)
Net cash provided (used) 30,344 (76,631) (51,449)
Net increase (decrease) in cash and cash equivalents (3,928) (71,624) 37,762
Cash and cash equivalents, beginning of year 4,364 75,988 38,226
Cash and cash equivalents, end of year 436 4,364 75,988
GSWC      
Cash Flows From Operating Activities:      
Net Income 46,969 47,591 47,857
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 38,063 41,534 40,532
Provision for doubtful accounts 627 845 1,054
Deferred income taxes and investment tax credits 28,099 10,719 34,352
Stock-based compensation expense 2,118 2,443 1,748
Other - net (352) 822 (12)
Changes in assets and liabilities:      
Accounts receivable - customers (1,750) (923) 3,979
Unbilled revenue 481 (448) 819
Other accounts receivable (896) 1,067 670
Materials and supplies 1,136 (2,069) (932)
Prepayments and other current assets 2,114 440 583
Increase (Decrease) in Regulatory Assets and Liabilities (5,610) (26,422) 26,386
Accounts payable (1,514) 1,940 (1,676)
Inter-company receivable/payable 280 445 219
Income taxes receivable/payable from/to Parent (10,856) 18,580 (19,876)
Increase (Decrease) in Pension and Postretirement Obligations (289) 616 (2,356)
Other liabilities 2,666 358 (664)
Net cash provided 101,286 97,538 132,683
Cash Flows From Investing Activities:      
Capital expenditures (127,913) (86,144) (70,888)
Origination of Notes Receivable from Related Parties 0 (20,700) (8,300)
Repayment of Notes Receivable from Related Parties 0 20,700 8,800
Payments for (Proceeds from) Other Investing Activities (1,389) (2,869) (1,568)
Net cash used (129,302) (89,013) (71,956)
Cash Flows From Financing Activities:      
Tax benefits from exercise of stock-based awards 501 872 514
Receipt of advances for and contributions in aid of construction 6,660 3,731 7,598
Refunds on advances for construction (3,921) (3,660) (3,469)
Retirement or repayments of long-term debt (313) (237) (21,287)
Proceeds from issuance of long-term debt, net of issuance costs 0 0 14,846
Net change in inter-company borrowings 49,500 12,000 0
Dividends paid (25,450) (62,000) (52,000)
Other (1,253) (735) (799)
Net cash provided (used) 25,724 (50,029) (54,597)
Net increase (decrease) in cash and cash equivalents (2,292) (41,504) 6,130
Cash and cash equivalents, beginning of year 2,501 44,005 37,875
Cash and cash equivalents, end of year $ 209 $ 2,501 $ 44,005