XML 17 R5.htm IDEA: XBRL DOCUMENT v3.8.0.1
CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Cash Flows [Abstract]      
Net Income $ 176,668 $ 124,438 $ 127,794
Adjustments to Reconcile Net Income To Net Cash Flows from Operating Activities:      
Depreciation Expense 152,874 146,097 138,093
Amortization Expense 22,255 22,498 19,261
Amortization of Debt Issuance Costs 2,349 2,853 3,043
Use of Renewable Energy Credits for Compliance 25,453 17,618 19,731
Deferred Income Taxes 100,762 59,367 72,026
Pension and Other Postretirement Benefits Expense 16,039 15,338 18,588
Pension and Other Postretirement Benefits Funding (14,430) (13,459) (30,682)
Allowance for Equity Funds Used During Construction (5,322) (4,522) (5,352)
FERC Transmission Refund Payable (4,878) 4,878 0
Changes in Current Assets and Current Liabilities:      
Accounts Receivable (13,219) 7,809 (3,019)
Materials, Supplies, and Fuel Inventory 175 7,627 (8,758)
Regulatory Assets (3,942) (12,147) 18,002
Accounts Payable and Accrued Charges 9,790 14,284 (13,917)
Regulatory Liabilities (20,227) 18,012 10,921
Other, Net 3,977 14,777 (797)
Net Cash Flows—Operating Activities 448,324 425,468 364,934
Cash Flows from Investing Activities      
Capital Expenditures (345,617) (250,360) (333,841)
Purchase, Springerville Coal Handling Facilities Lease Assets 0 0 (120,312)
Purchase, Springerville Unit 1 Assets 0 (85,000) (45,753)
Purchase Intangibles, Renewable Energy Credits (51,179) (40,949) (29,184)
Proceeds from Sale, Springerville Coal Handling Facilities 0 0 23,656
Contributions in Aid of Construction 4,983 3,432 4,517
Net Cash Flows—Investing Activities (391,813) (372,877) (500,917)
Cash Flows from Financing Activities      
Proceeds from Borrowings, Revolving Credit Facility 70,000 0 148,000
Repayments of Borrowings, Revolving Credit Facility (35,000) 0 (233,000)
Proceeds from Borrowings, Term Loan 0 0 130,000
Repayments of Borrowings, Term Loan 0 0 (130,000)
Proceeds from Issuance, Long-Term Debt 0 0 299,019
Repayments, Long-Term Debt 0 0 (208,600)
Dividends Paid to Parent (70,000) (50,000) (50,000)
Payments of Capital Lease Obligations (15,571) (14,079) (13,464)
Payment of Debt Issuance/Retirement Costs (245) (183) (3,942)
Contribution from Parent 0 0 180,000
Other, Net 481 (4,871) 1,458
Net Cash Flows—Financing Activities (50,335) (69,133) 119,471
Net Increase (Decrease) in Cash, Cash Equivalents, and Restricted Cash 6,176 (16,542) (16,512)
Cash, Cash Equivalents, and Restricted Cash, Beginning of Period 43,325 59,867 76,379
Cash, Cash Equivalents, and Restricted Cash, End of Period $ 49,501 $ 43,325 $ 59,867