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In addition, the Company runs sales incentive programs with certain distributors and resellers, such as product rebates and cooperative advertising campaigns. The Company recognizes these incentives at the time they are offered to customers and records a credit to their account with an offsetting expense as either a reduction to revenue, increase to cost of revenue, or marketing expense depending on the type of sales incentive. From time to time, the Company may enter into licensing arrangements related to its intellectual property. Revenue from licensing arrangements is recognized when earned and estimable. The timing of revenue recognition is dependent on the terms of each license agreement. Generally, the Company will recognize non-refundable upfront license fees related to patent licenses immediately upon receipt of the funds if the Company has no significant future obligations to perform under the arrangement. However, the Company will defer recognition for licensing fees where the Company has significant future performance requirements, the fee is not fixed (such as royalties earned as a percentage of future sales), or the fees are otherwise contingent. Accounts Receivable For product sales, the Company typically invoices its customers at the time of shipment for the sales order value of products shipped. Accounts receivable are recognized at the invoiced amount and are not subject to any interest or finance charges. The Company does not have any off-balance sheet credit exposure related to any of its customers. Allowance for Doubtful Accounts The Company evaluates the collectability of accounts receivable based on a combination of factors. In cases where the Company becomes aware of circumstances that may impair a specific customer's ability to meet its financial obligations subsequent to the original sale, the Company will recognize an allowance against amounts due, and thereby reduce the net recognized receivable to the amount the Company reasonably believes will be collected. For all other customers, the Company recognizes an allowance for doubtful accounts based on the length of time the receivables are past due and consideration of other factors such as industry conditions, the current business environment and the Company's historical experience.
The Company expenses the costs of producing advertisements at the time production occurs and expenses the cost of communicating the advertising in the period in which the advertising is used. Advertising costs are included in Sales, general and administrative expenses and amounted to approximately
$18.2 million, $9.7 million, and $5.7 millionfor the years ended June 30, 2013, June 24, 2012and June 26, 2011, respectively. Research and Development Research and development activities are expensed when incurred. For contracts under which the Company anticipates that direct costs will exceed amounts to be funded over the life of the contract, costs are reported as research and development expenses when incurred, and related funding as an offset of those expenses when funds are received. Earnings Per Share Basic earnings per share is computed by dividing net income by the weighted average number of shares of common stock outstanding for the applicable period. Diluted earnings per share is determined in the same manner as basic earnings per share except that the number of shares is increased to assume exercise of potentially dilutive stock options, nonvested restricted stock and contingently issuable shares using the treasury stock method, unless the effect of such increases would be anti-dilutive. Under the treasury stock method, the amount the employee must pay for exercising stock options, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that would be recognized in additional paid-in capital when the award becomes deductible are assumed to be used to repurchase shares.