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Consolidation and Nature of Operations | 3 Months Ended
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Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Consolidation and Nature of Operations | Consolidation and Nature of Operations The unaudited condensed consolidated financial statements include the accounts of Pinnacle West and our subsidiaries: APS, 4C Acquisition, LLC ("4CA"), Bright Canyon Energy Corporation ("BCE") and El Dorado Investment Company ("El Dorado"). Intercompany accounts and transactions between the consolidated companies have been eliminated. The unaudited condensed consolidated financial statements for APS include the accounts of APS and the Palo Verde Nuclear Generating Station ("Palo Verde") sale leaseback variable interest entities ("VIEs") (see Note 5 for further discussion). Our accounting records are maintained in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Amounts reported in our interim Condensed Consolidated Statements of Income are not necessarily indicative of amounts expected for the respective annual periods, due to the effects of seasonal temperature variations on energy consumption, timing of maintenance on electric generating units, and other factors. Our condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments except as otherwise disclosed in the notes) that we believe are necessary for the fair presentation of our financial position, results of operations, and cash flows for the periods presented. Certain information and footnote disclosures normally included in financial statements prepared in conformity with GAAP have been condensed or omitted pursuant to such regulations, although we believe that the disclosures provided are adequate to make the interim information presented not misleading. The accompanying condensed consolidated financial statements and these notes should be read in conjunction with the audited consolidated financial statements and notes included in our 2016 Form 10-K. Certain line items are presented in more detail on the Condensed Consolidated Statements of Cash Flows than was presented in the prior years. The prior year amounts were reclassified to conform to the current year presentation. These reclassifications have no impact on net cash flows provided by operating activities. The following tables show the impacts of the reclassifications of the prior year's (previously reported) amounts (dollars in thousands):
Statements of Cash Flows for the Three Months Ended March 31, 2016 | As previously reported |  | Reclassifications to conform to current year presentation |  | Amount reported after reclassification to conform to current year presentation
Cash Flows from Operating Activities |  |  |  |  |
Stock compensation | $ | — |  |  | $ | 16,687 |  |  | $ | 16,687 |
Change in other long-term liabilities | 4,536 |  |  | (16,687 | ) |  | (12,151 | )
Supplemental Cash Flow Information The following table summarizes supplemental Pinnacle West cash flow information (dollars in thousands):
| Three Months Ended March 31,
| 2017 |  | 2016
Cash paid (received) during the period for: |  |  |
Income taxes, net of refunds | $ | (2 | ) |  | $ | 2,502 |
Interest, net of amounts capitalized | 54,280 |  |  | 56,139 |
Significant non-cash investing and financing activities: |  |  |
Accrued capital expenditures | $ | 79,306 |  |  | $ | 59,707 |

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