Note 1: Acquisition and integration costs for the six months ended June 30, 2019, related to the acquisition of Electro Scientific Industries, Inc. (“ESI”) which closed on February 1, 2019. During the six months ended June 30, 2018, we reversed a portion of costs recognized during previous periods related to the Newport acquisition, which closed during the second quarter of 2016, related to severance agreement provisions that were not met.
Note 2: Costs of revenues during the six months ended June 30, 2019 includes the amortization of thestep-up of inventory to fair value as a result of the ESI acquisition.
Note 3: We recorded fees and expenses during the six months ended March 31, 2019 related to Amendment No. 5 of our Term Loan Credit Agreement. We recorded fees and expenses during the six months ended June 30, 2018 related to the fourth repricing of our Term Loan Credit Agreement.
Note 4: We recorded additional interest expense related to the amortization of debt issuance costs associated with our Term Loan Credit Agreement.
Note 5: We recorded restructuring costs during the six months ended June 30, 2019, which consisted primarily of severance costs related to an organization-wide reduction in workforce, the consolidation of service functions in Asia and the movement of certain products to low cost regions. We also recorded expense during the six months ended June 30, 2019 related to a contractual obligation we assumed as part of our acquisition of Newport Corporation. Restructuring costs during the six months ended June 30, 2018 were primarily comprised of severance costs related to transferring a portion of our shared services functions to a third party as well as the consolidation of certain shared service functions in Asia. We also recorded environmental costs during the six months ended June 30, 2018, related to an Environmental Protection Agency-designated Superfund site, which was acquired as part of our acquisition of Newport Corporation.
Note 6: We recorded windfall tax benefits on the vesting of stock-based compensation.
Note 7: We recorded tax adjustments resulting from additional guidance provided by the IRS related to 2017 tax reform.
Note 8: We recorded a provisional deferred tax adjustment, which also includes the reversal of a tax accrual on a French dividend, related to U.S. tax reform legislation during the fourth quarter of 2017 and updated the provisional transition tax during the six months ended June 30, 2018.
Note 9: We adjusted the transition tax on accumulated foreign earnings related to the 2017 Tax Cut and Jobs Act during the six months ended June 30, 2018.
Note 10: TheNon-GAAP net earnings andNon-GAAP net earnings per share amounts exclude acquisition and integration costs, the amortization of thestep-up of inventory to fair value, fees and expenses related to the repricing of the Term Loan Credit Agreement, fees and expenses related to an amendment to our Term Loan Credit agreement, amortization of debt issuance costs, restructuring and other costs, amortization of intangible assets, a windfall tax benefit related to stock compensation expense, tax reform adjustments,a deferred tax adjustment, transition tax on accumulated foreign earnings and the related tax effect of these adjustments to reflect the expected full year effective tax rate in the related period.
Note 11: TheNon-GAAP income from operations andNon-GAAP operating margin percentages exclude acquisition and integration costs, fees and expenses related to the repricing of our Term Loan Credit Agreement, fees and expenses related to an amendment to our Term Loan Credit agreement, restructuring and other costs and amortization of intangible assets.
Note 12: TheNon-GAAP gross profit amounts andNon-GAAP gross profit percentages exclude the amortization of thestep-up of inventory to fair value related to the acquisition of ESI.
Note 13: EBITDA excludes net interest, income taxes, depreciation and amortization of intangible assets.
Note 14: Adjusted EBITDA excludes stock-based compensation, acquisition and integration costs, the amortization of thestep-up of inventory to fair value, fees and expenses related to the repricing of our Term Loan Credit Agreement, fees and expenses related to an amendment to our Term Loan Credit Agreement, restructuring and other costs and other adjustments as defined in our Term Loan Credit Agreement.