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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Cash Flows from Operating Activities    
Net Income $ 176,373 $ 163,694
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:    
Depreciation Expense 118,223 114,667
Amortization Expense 18,940 16,323
Amortization of Debt Issuance Costs 1,747 1,763
Use of Renewable Energy Credits for Compliance 22,938 17,434
Deferred Income Taxes 48,056 83,954
Pension and Other Postretirement Benefits Expense 11,485 12,029
Pension and Other Postretirement Benefits Funding (15,008) (12,763)
Allowance for Equity Funds Used During Construction (5,290) (4,145)
FERC Transmission Refund Payable 0 (4,878)
Changes in Current Assets and Current Liabilities:    
Accounts Receivable (57,815) (59,016)
Materials, Supplies, and Fuel Inventory 3,749 452
Regulatory Assets 37 (2,407)
Accounts Payable and Accrued Charges 20,959 25,628
Income Taxes Receivable (12,532) 0
Regulatory Liabilities 21,959 (10,258)
Other, Net (1,713) (5,108)
Net Cash Flows—Operating Activities 352,108 337,369
Cash Flows from Investing Activities    
Capital Expenditures (273,398) (215,826)
Purchase Intangibles, Renewable Energy Credits (39,516) (40,838)
Contributions in Aid of Construction 9,765 3,265
Net Cash Flows—Investing Activities (303,149) (253,399)
Cash Flows from Financing Activities    
Proceeds from Borrowings, Revolving Credit Facility 101,000 35,000
Repayments of Borrowings, Revolving Credit Facility (121,000) (35,000)
Dividend Paid to Parent (40,000) (35,000)
Payments of Capital Lease Obligations (10,930) (14,804)
Other, Net (150) 641
Net Cash Flows—Financing Activities (71,080) (49,163)
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash (22,121) 34,807
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period 49,501 43,325
Cash, Cash Equivalents, and Restricted Cash, End of Period $ 27,380 $ 78,132