• Stock based compensation expense.
• Compensation expense (benefit) – deferred compensation, consists of gains and losses on marketable equity securities related to our deferred compensation arrangements.
• Non-cash interest expense, consists of amortization of issuance cost and accretion of discount related to the convertible notes.
• Loss (gain) on deferred compensation plan securities represents the changes in the fair value of the assets in a separate trust that is invested in corporate owned life insurance under our deferred compensation plan.
• Tax effects of non-GAAP adjustments. Effective first quarter of fiscal 2016, the Company changed its methodology for reporting non-GAAP taxes to be based on estimated cash tax expense and reserves. The Company forecasts its annual cash tax liability and allocates the tax to each quarter in proportion to earnings for that period. This approach is designed to enhance the ability of investors to understand the impact of the Company's tax expense on its current operations, provide improved modeling accuracy, and substantially reduce fluctuations caused by GAAP to non-GAAP adjustments, which may not reflect actual cash tax expense. Non-GAAP tax amounts for periods prior to March 30, 2015 have not been adjusted to reflect the new methodology.
• Diluted weighted average shares non-GAAP adjustment, for purposes of calculating non-GAAP diluted net income per share, the GAAP diluted weighted average shares outstanding is adjusted to exclude the benefits of stock compensation expense attributable to future services not yet recognized in the financial statements that are treated as proceeds assumed to be used to repurchase shares under the GAAP treasury method.

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