amortization Amortization of intangible assets 406 1,631 Impairment of gas properties — 113,208 (Gain) loss on derivative instruments (1) (103,558) 81 Non-cash stock compensation expense 6,411 33,605 Income tax expense 33,917 18,000 Loss on embedded derivatives 15,417 15,417 Non-controlling interest attributable to midstream entities (33,858) (98,236) 1. The adjustments for the derivative fair value (gains) losses and net cash receipts on settled commodity derivative instruments have the effect of adjusting net income (loss) for changes in the fair value of derivative instruments, which are recognized at the end of each accounting period because we do not designate commodity derivative instruments as accounting hedges. This results in reflecting commodity derivative gains and losses within Adjusted EBITDAX on a cash basis during the period the derivatives settled. Excluded from the above Adjusted EBITDAX reconciliation is the impact of non-controlling interest and the elimination of intercompany water revenues between Rice Energy subsidiaries and Rice Midstream Partners of $33.9 million and $17.1 million, respectively, for the three months ended June 30, 2017 and $98.2 million and $56.4 million, respectively, for the twelve months ended June 30, 2017. When including these impacts, our Further Adjusted EBITDAX is $280.5 million and $978.2 million for the three and twelve months ended June 30, 2017, respectively. Our consolidated net debt to last twelve months Further Adjusted EBITDAX ratio is 1.5x. Also included in the above reconciliation is the non-controlling interest attributable to Rice Energy Operating LLC, as we view 2. 15 Adjusted EBITDAX(2)$229,507$823,602 Other expense—6,508 Exploration expense7,10619,739 Non-cash incentive unit expense4,80020,462 Net cash (payments) receipts on settled derivative instruments (1)(17,390)39,863 Impairment of fixed assets—20,462 Acquisition expense2,4088,168 Amortization of deferred financing costs3,42610,454
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