and losses related to changes in the fair value of securities are recognized in accumulated other comprehensive income, net of tax, in the Company’s Consolidated Balance Sheets. Changes in the fair value of available-for-sale securities impact the Company’s net income only when such securities are sold or an other-than-temporary impairment is recognized. Realized gains and losses on the sale of securities are determined by specific identification of each security’s cost basis. The Company regularly reviews its investment portfolio to determine if any security is other-than-temporarily impaired, which would require the Company to record an impairment charge in the period any such determination is made. In making this judgment, the Company evaluates, among other things, the duration and extent to which the fair value of a security is less than its cost; the financial condition of the issuer and any changes thereto; and the Company’s intent to sell, or whether it will more likely than not be required to sell, the security before recovery of its amortized cost basis. The Company’s assessment on whether a security is other-than-temporarily impaired could change in the future due to new developments or changes in assumptions related to any particular security, which would have an adverse impact on the Company’s operating results. 

Inventory Valuation and Valuation of Manufacturing-Related Assets and Estimated Purchase Commitment Cancellation Fees 

The Company must purchase components and build inventory in advance of product shipments and has invested in manufacturing-related assets, including capital assets held at its suppliers’ facilities. In addition, the Company has made prepayments to certain of its suppliers associated with long-term supply agreements to secure supply of inventory components. The Company records a write-down for inventories of components and products, including third-party products held for resale, which have become obsolete or are in excess of anticipated demand or net realizable value. The Company performs a detailed review of inventory that considers multiple factors including demand forecasts, product life cycle status, product development plans, current sales levels and component cost trends. The Company also reviews its manufacturing-related capital assets and inventory prepayments for impairment whenever events or circumstances indicate the carrying amount of such assets may not be recoverable. If the Company determines that an asset is not recoverable, it records an impairment loss equal to the amount by which the carrying value of such an asset exceeds its fair value. 

The industries in which the Company competes are subject to a rapid and unpredictable pace of product and component obsolescence and demand changes. In certain circumstances the Company may be required to record additional write-downs of inventory and/or manufacturing-related assets. These circumstances include future demand or market conditions for the Company’s products being less favorable than forecasted, unforeseen technological changes or changes to the Company’s product development plans that negatively impact the utility of any of these