Summary Of Significant Accounting Policies	12 Months Ended
Dec. 31, 2011
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	Note 2—Summary of Significant Accounting Policies Basis of Presentation The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S."). Principles of Consolidation The consolidated financial statements include the accounts of Netlist, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Fiscal Year The Company operates under a ⁵²/53-week fiscal year ending on the Saturday closest to December 31. The 2011 and 2010 fiscal years ended on December 31, 2011 and January 1, 2011, respectively. Fiscal years 2011 and 2010 each consisted of 52 weeks. Reclassifications Certain amounts in the 2010 consolidated financial statements have been reclassified to conform to the current year presentation. Use of Estimates The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of net sales and expenses during the reporting period. By their nature, these estimates and assumptions are subject to an inherent degree of uncertainty. Significant estimates made by management include, among others, provisions for uncollectible receivables and sales returns, warranty liabilities, valuation of inventories, fair value of financial instruments, impairment of long-lived assets, stock-based compensation expense and realization of deferred tax assets. The Company bases its estimates on historical experience, knowledge of current conditions and our belief of what could occur in the future considering available information. The Company reviews its estimates on an on-going basis. The actual results experienced by the Company may differ materially and adversely from its estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected. Revenue Recognition The Company's revenues primarily consist of product sales of high performance memory subsystems to original equipment manufacturers ("OEMs"). Revenues also include sales of excess inventories to distributors and other users of memory integrated circuits ("ICs"), totaling less than 1% of net revenues in 2011 and 2010. The Company recognizes revenues in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 605. Accordingly, the Company recognizes revenues when there is persuasive evidence that an arrangement exists, product delivery and acceptance have occurred, the sales price is fixed or determinable, and collectibility of the resulting receivable is reasonably assured. The Company generally uses customer purchase orders and/or contracts as evidence of an arrangement. Delivery occurs when goods are shipped for customers with shipping point terms and upon receipt for customers with destination terms, at which time title and risk of loss transfer to the customer. Shipping documents are used to verify delivery and customer acceptance. The Company assesses whether the sales price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund. Customers are generally allowed limited rights of return for up to 30 days, except for sales of excess component inventories, which contain no right-of-return privileges. Estimated returns are provided for at the time of sale based on historical experience or specific identification of an event necessitating a reserve. The Company offers a standard product warranty to our customers and has no other post-shipment obligations. The Company assesses collectibility based on the creditworthiness of the customer as determined by credit checks and evaluations, as well as the customer's payment history. All amounts billed to customers related to shipping and handling are classified as revenues, while all costs incurred by the Company for shipping and handling are classified as cost of sales. Cash and Cash Equivalents Cash and cash equivalents consist of cash and short-term investments with original maturities of three months or less, other than short-term investments in securities that lack an active market. Investments in Marketable Securities The Company accounts for its investments in marketable securities in accordance with ASC Topic 320. The Company determines the appropriate classification of its investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company's investments in marketable securities have been classified and accounted for as available-for-sale based on management's investment intentions relating to these securities. Available-for-sale securities are stated at fair value, generally based on market quotes, to the extent they are available. Unrealized gains and losses, net of applicable deferred taxes, are recorded as a component of other comprehensive income (loss). Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income, net in the consolidated statements of operations. The Company generally invests its excess cash in domestic bank-issued certificates of deposit which carry federal deposit insurance, money market funds and highly liquid debt instruments of U.S. municipalities, corporations and the U.S. government and its agencies. All highly liquid investments with stated maturities of three months or less from the date of purchase are classified as cash equivalents; all investments with stated maturities of greater than three months are classified as investments in marketable securities. Fair Value of Financial Instruments The Company's financial instruments consist principally of cash and cash equivalents, investments in marketable securities, accounts receivable, accounts payable, accrued expenses and debt instruments. Other than for certain investments in auction rate securities and short-term corporate bonds (see Note 4), the fair value of the Company's cash equivalents and investments in marketable securities is determined based on quoted prices in active markets for identical assets or Level 1 inputs. Because of their short-term nature, short-term corporate bonds are not frequently traded. Although there are observable quotes for these securities, the markets are not considered active. Accordingly, the fair values of these investments are based on Level 2 inputs. The Company recognizes transfers between Levels 1 through 3 of the fair value hierarchy at the beginning of the reporting period. The Company believes that the carrying values of all other financial instruments approximate their current fair values due to their nature and respective durations. Allowance for Doubtful Accounts The Company evaluates the collectibility of accounts receivable based on a combination of factors. In cases where the Company is aware of circumstances that may impair a specific customer's ability to meet its financial obligations subsequent to the original sale, the Company will record 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 records allowances for doubtful accounts based primarily on the length of time the receivables are past due based on the terms of the originating transaction, the current business environment and its historical experience. Uncollectible accounts are charged against the allowance for doubtful accounts when all cost effective commercial means of collection have been exhausted. Concentration of Credit Risk Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents, investments in marketable securities, and accounts receivable. The Company invests its cash equivalents primarily in money market mutual funds. Cash equivalents are maintained with high quality institutions, the composition and maturities of which are regularly monitored by management. The Company had $0.5 million of FDIC insured cash and cash equivalents at December 31, 2011. Investments in marketable securities are generally in high-credit quality debt instruments. Such investments are made only in instruments issued or enhanced by high-quality institutions. The Company has not realized any credit losses related to these investments. The Company's trade accounts receivable are primarily derived from sales to OEMs in the computer industry (see Note 12). The Company performs credit evaluations of its customers' financial condition and limits the amount of credit extended when deemed necessary, but generally requires no collateral. Credit quality is monitored by evaluation of credit scores and collection history. The Company believes that the concentration of credit risk in its trade receivables is moderated by its credit evaluation process, relatively short collection terms, the high level of credit worthiness of its customers, foreign credit insurance and letters of credit issued on the Company's behalf. Reserves are maintained for potential credit losses, and such losses historically have not been significant and have been within management's expectations. Potential credit losses are limited to the gross value of accounts receivable. Inventories Inventories are valued at the lower of actual cost to purchase or manufacture the inventory or the net realizable value of the inventory. Cost is determined on an average cost basis which approximates actual cost on a first-in, first-out basis and includes raw materials, labor and manufacturing overhead. At each balance sheet date, the Company evaluates its ending inventory quantities on hand and on order and records a provision for excess quantities and obsolescence. Among other factors, the Company considers historical demand and forecasted demand in relation to the inventory on hand, competitiveness of product offerings, market conditions and product life cycles when determining obsolescence and net realizable value. In addition, the Company considers changes in the market value of components in determining the net realizable value of its inventory. Provisions are made to reduce excess or obsolete inventories to their estimated net realizable values. Once established, write-downs are considered permanent adjustments to the cost basis of the excess or obsolete inventories. Property and Equipment Property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated useful lives, which generally range from three to seven years. Leasehold improvements are recorded at cost and amortized on a straight-line basis over the shorter of their estimated useful lives or the remaining lease term. The Company evaluates the recoverability of the carrying value of long-lived assets held and used by the Company for impairment on at least an annual basis or whenever events or changes in circumstances indicate that their carrying value may not be recoverable. When such factors and circumstances exist, the Company compares the projected undiscounted future net cash flows associated with the related asset or group of assets over their estimated useful lives against their respective carrying amount. If the carrying value is determined not to be recoverable from future operating cash flows, the asset is deemed impaired and an impairment loss is recognized to the extent the carrying value exceeds the estimated fair value of the asset. The fair value of the asset or asset group is based on market value when available, or when unavailable, on discounted expected cash flows. The Company's management believes there is no impairment of long-lived assets as of December 31, 2011. There can be no assurance, however, that market conditions will not change or demand for the Company's products will continue, which could result in future impairment of long-lived assets. Warranty Reserve The Company offers product warranties generally ranging from one to three years, depending on the product and negotiated terms of any purchase agreements with customers. Such warranties require the Company to repair or replace defective product returned to the Company during such warranty period at no cost to the customer. Warranties are not offered on sales of excess component inventory. The Company records an estimate for warranty-related costs at the time of sale based on its historical and estimated product return rates and expected repair or replacement costs (see Note 3). Such costs have historically been within management's expectations and the provisions established. Stock-Based Compensation The Company accounts for equity issuances to non-employees in accordance with ASC Topic 505. All transactions in which goods or services are the consideration received for the issuance of equity instruments are accounted for based on the fair value of the consideration received or the fair value of the equity instrument issued, whichever is more reliably measurable. The measurement date used to determine the fair value of the equity instrument issued is the earlier of the date on which the third-party performance is complete or the date on which it is probable that performance will occur. In accordance with ASC Topic 718, employee and director stock-based compensation expense recognized during the period is based on the value of the portion of stock-based payment awards that is ultimately expected to vest during the period. Given that stock-based compensation expense recognized in the consolidated statements of operations is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. ASC Topic 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company's estimated average forfeiture rates are based on historical forfeiture experience and estimated future forfeitures. The fair value of common stock option awards to employees and directors is calculated using the Black-Scholes option pricing model. The Black-Scholes model requires subjective assumptions regarding future stock price volatility and expected time to exercise, along with assumptions about the risk-free interest rate and expected dividends, all of which affect the estimated fair values of the Company's common stock option awards. The expected term of options granted is calculated as the average of the weighted vesting period and the contractual expiration date of the option. This calculation is based on the safe harbor method permitted by the SEC in instances where the vesting and exercise terms of options granted meet certain conditions and where limited historical exercise data is available. The expected volatility is based on the historical volatility of the Company's common stock. The risk-free rate selected to value any particular grant is based on the U.S. Treasury rate that corresponds to the expected term of the grant effective as of the date of the grant. The expected dividend assumption is based on the Company's history and management's expectation regarding dividend payouts. Compensation expense for common stock option awards with graded vesting schedules is recognized on a straight-line basis over the requisite service period for the last separately vesting portion of the award, provided that the accumulated cost recognized as of any date at least equals the value of the vested portion of the award. The Company recognizes the fair value of restricted stock awards issued to employees and outside directors as stock-based compensation expense on a straight-line basis over the vesting period for the last separately vesting portion of the awards. Fair value is determined as the difference between the closing price of our common stock on the grant date and the purchase price of the restricted stock award, if any, reduced by expected forfeitures. Income Taxes Deferred tax assets and liabilities are recognized to reflect the estimated future tax effects, calculated at currently effective tax rates, of future deductible or taxable amounts attributable to events that have been recognized on a cumulative basis in the consolidated financial statements. A valuation allowance related to a net deferred tax asset is recorded when it is more likely than not that some portion of the deferred tax asset will not be realized. ASC Topic 740 prescribes a recognition threshold and measurement requirement for the financial statement recognition of a tax position that has been taken or is expected to be taken on a tax return and also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. Under ASC Topic 740 the Company may only recognize or continue to recognize tax positions that meet a "more likely than not" threshold. Research and Development Expenses Research and development expenditures are expensed in the period incurred. Collaborative Agreements In 2011, the Company entered into two memory technology Collaboration Agreements. The first agreement is a HyperCloud™ Technology Collaboration Agreement (the "IBM Agreement") with International Business Machines ("IBM"). Under the IBM Agreement, IBM and the Company have agreed to cooperate with respect to the qualification of HyperCloud™ technology for use with IBM servers and to engage in certain joint marketing efforts if qualification is achieved. IBM and the Company have agreed to commit resources and funds in support of these activities. The IBM Agreement is non-exclusive. The second agreement is a Collaboration Agreement (the "HP Agreement") with Hewlett-Packard Company ("HP"). Under the HP Agreement, HP and the Company have agreed to cooperate with respect to the qualification of HyperCloud™ technology for use with HP servers and to engage in certain joint marketing efforts if qualification is achieved. HP and the Company have agreed to commit resources and funds in support of these activities. The HP Agreement is exclusive for a period of time. HP and the Company agree to collaborate on the future use of HyperCloud™ load reduction and rank multiplication technologies for next generation server memory for HP. In 2011, the Company reimbursed IBM and HP $0.2 million and $0.1 million, respectively, for the cost of certain qualification activities. The payments are included in research and development expense in the accompanying consolidated statement of operations. The Company may be required to make additional payments to both IBM and HP for joint marketing activities if and when the HyperCloud™ technology is qualified. The Company's net sales will be determined after deduction of such customer allowances, in accordance with ASC 605-50. There can be no assurance that the efforts undertaken under either of the IBM or HP collaboration agreements will result in any new revenues for the Company. Through 2011, the Company maintained a collaborative arrangement with a partner in order to develop products using certain of the Company's proprietary technology. Under the arrangement, the development partner was granted a non-exclusive license to specified intellectual property for exclusive use in the development and production of ASIC chipsets for the Company. Both the Company and the development partner provided engineering project management resources at their own expense. The development partner was entitled to non-recurring engineering fees based upon the achievement of development milestones, and to a minimum portion of the Company's purchasing allocations for the component. Expenses incurred and paid to the development partner, which were insignificant in 2011 and amounted to $0.3 million in 2010, are included in research and development expense in the accompanying consolidated statements of operations. As of December 31, 2011, the operational and financial obligations under the agreement have been fulfilled. Comprehensive Loss ASC Topic 220 establishes standards for reporting and displaying comprehensive income (loss) and its components in the consolidated financial statements. Accumulated other comprehensive loss includes unrealized gains or losses on investments. Risks and Uncertainties The Company has invested and expects to continue to invest a significant portion of its research and development budget into the design of ASIC devices, including the HyperCloud™ memory subsystem. This new design and the products it is incorporated into are subject to increased risks as compared to the Company's existing products. The Company may be unable to achieve customer or market acceptance of the HyperCloud™ memory subsystem or other new products, or achieve such acceptance in a timely manner. The Company has experienced a longer qualification cycle than anticipated with its HyperCloud™ memory subsystems, and as of December 31, 2011 the product has not generated significant revenue relative to the Company's investment in the product. The Company has entered into collaborative agreements with both HP and IBM pursuant to which these OEMs have agreed to cooperate with the Company in efforts to qualify HyperCloud™ for use in their respective products. If qualification is achieved by one or both of these OEMs, the qualifying OEM will engage with the Company in joint marketing and further product development efforts. The Company and each of the OEMs have committed financial and other resources toward the collaboration. There can be no assurance that the efforts undertaken pursuant to either of the collaborative agreements will result in any new revenues for the Company. Further delays or any failure in placing or qualifying this product with HP, IBM or other potential customers would adversely impact the Company's results of operations. The Company's operations in the PRC are subject to various political, geographical and economic risks and uncertainties inherent to conducting business in the PRC. These include, but are not limited to, (i) potential changes in economic conditions in the region, (ii) managing a local workforce that may subject the Company to uncertainties or certain regulatory policies, (iii) changes in other policies of the Chinese governmental and regulatory agencies, and (iv) changes in the laws and policies of the U.S. government regarding the conduct of business in foreign countries, generally, or in the PRC, in particular. Additionally, the Chinese government controls the procedures by which its local currency, the Chinese Renminbi ("RMB"), is converted into other currencies and by which dividends may be declared or capital distributed for the purpose of repatriation of earnings and investments. If restrictions in the conversion of RMB or in the repatriation of earnings and investments through dividend and capital distribution restrictions are instituted, the Company's operations and operating results may be negatively impacted. Restricted net assets of our subsidiary in the PRC totaled $0.6 million and $2.0 million at December 31, 2011 and January 1, 2011, respectively. Foreign Currency Remeasurement The functional currency of the Company's foreign subsidiary is the U.S. dollar. Local currency financial statements are remeasured into U.S. dollars at the exchange rate in effect as of the balance sheet date for monetary assets and liabilities and the historical exchange rate for nonmonetary assets and liabilities. Expenses are remeasured using the average exchange rate for the period, except items related to nonmonetary assets and liabilities, which are remeasured using historical exchange rates. All remeasurement gains and losses are included in determining net loss. Transaction gains and losses were not significant in 2011 and 2010. Net Loss Per Share Basic net loss per share is calculated by dividing net loss by the weighted-average common shares outstanding during the year, excluding unvested shares issued pursuant to restricted share awards under the Company's share-based compensation plans. Diluted net loss per share is calculated by dividing the net loss by the weighted-average shares and dilutive potential common shares outstanding during the year. Dilutive potential shares consist of dilutive shares issuable upon the exercise or vesting of outstanding stock options and restricted stock awards, respectively, computed using the treasury stock method. In periods of losses, basic and diluted loss per share are the same, as the effect of stock options and unvested restricted share awards on loss per share is anti-dilutive. New Accounting Pronouncements In May 2011, the FASB issued Accounting Standards Update ("ASU") No. 2011-4, Fair Value Measurement ("ASU 11-4"). ASU 11-4 amends existing guidance to achieve convergence in measurement and disclosure between U.S. Generally Accepted Accounting Standards ("GAAP") and International Financial Reporting Standards ("IFRS"). ASU 11-4 is effective for fiscal year 2012. The Company is currently evaluating the impact that ASU 11-4 will have on its consolidated financial statements. In June 2011, the FASB issued ASU No. 2011-5, Comprehensive Income ("ASU 11-5"). ASU 11-5 amends existing guidance to increase the prominence of items reported in other comprehensive income and to facilitate convergence of U.S. GAAP and IFRS. ASU 11-5 is effective for fiscal year 2012. The Company is currently evaluating the impact that ASU 11-4 will have on its consolidated financial statements.

Note 2—Summary of Significant Accounting Policies

Basis of Presentation

The accompanying consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S.").

Principles of Consolidation

The consolidated financial statements include the accounts of Netlist, Inc. and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Fiscal Year

The Company operates under a ⁵²/53-week fiscal year ending on the Saturday closest to December 31. The 2011 and 2010 fiscal years ended on December 31, 2011 and January 1, 2011, respectively. Fiscal years 2011 and 2010 each consisted of 52 weeks.

Reclassifications

Certain amounts in the 2010 consolidated financial statements have been reclassified to conform to the current year presentation.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements, and the reported amounts of net sales and expenses during the reporting period. By their nature, these estimates and assumptions are subject to an inherent degree of uncertainty.

Significant estimates made by management include, among others, provisions for uncollectible receivables and sales returns, warranty liabilities, valuation of inventories, fair value of financial instruments, impairment of long-lived assets, stock-based compensation expense and realization of deferred tax assets. The Company bases its estimates on historical experience, knowledge of current conditions and our belief of what could occur in the future considering available information. The Company reviews its estimates on an on-going basis. The actual results experienced by the Company may differ materially and adversely from its estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected.

Revenue Recognition

The Company's revenues primarily consist of product sales of high performance memory subsystems to original equipment manufacturers ("OEMs"). Revenues also include sales of excess inventories to distributors and other users of memory integrated circuits ("ICs"), totaling less than 1% of net revenues in 2011 and 2010.

The Company recognizes revenues in accordance with the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 605. Accordingly, the Company recognizes revenues when there is persuasive evidence that an arrangement exists, product delivery and acceptance have occurred, the sales price is fixed or determinable, and collectibility of the resulting receivable is reasonably assured.

The Company generally uses customer purchase orders and/or contracts as evidence of an arrangement. Delivery occurs when goods are shipped for customers with shipping point terms and upon receipt for customers with destination terms, at which time title and risk of loss transfer to the customer. Shipping documents are used to verify delivery and customer acceptance. The Company assesses whether the sales price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund. Customers are generally allowed limited rights of return for up to 30 days, except for sales of excess component inventories, which contain no right-of-return privileges. Estimated returns are provided for at the time of sale based on historical experience or specific identification of an event necessitating a reserve. The Company offers a standard product warranty to our customers and has no other post-shipment obligations. The Company assesses collectibility based on the creditworthiness of the customer as determined by credit checks and evaluations, as well as the customer's payment history.

All amounts billed to customers related to shipping and handling are classified as revenues, while all costs incurred by the Company for shipping and handling are classified as cost of sales.

Cash and Cash Equivalents

Cash and cash equivalents consist of cash and short-term investments with original maturities of three months or less, other than short-term investments in securities that lack an active market.

Investments in Marketable Securities

The Company accounts for its investments in marketable securities in accordance with ASC Topic 320. The Company determines the appropriate classification of its investments at the time of purchase and reevaluates such designation at each balance sheet date. The Company's investments in marketable securities have been classified and accounted for as available-for-sale based on management's investment intentions relating to these securities. Available-for-sale securities are stated at fair value, generally based on market quotes, to the extent they are available. Unrealized gains and losses, net of applicable deferred taxes, are recorded as a component of other comprehensive income (loss). Realized gains and losses and declines in value judged to be other than temporary are determined based on the specific identification method and are reported in other income, net in the consolidated statements of operations.

The Company generally invests its excess cash in domestic bank-issued certificates of deposit which carry federal deposit insurance, money market funds and highly liquid debt instruments of U.S. municipalities, corporations and the U.S. government and its agencies. All highly liquid investments with stated maturities of three months or less from the date of purchase are classified as cash equivalents; all investments with stated maturities of greater than three months are classified as investments in marketable securities.

Fair Value of Financial Instruments

The Company's financial instruments consist principally of cash and cash equivalents, investments in marketable securities, accounts receivable, accounts payable, accrued expenses and debt instruments. Other than for certain investments in auction rate securities and short-term corporate bonds (see Note 4), the fair value of the Company's cash equivalents and investments in marketable securities is determined based on quoted prices in active markets for identical assets or Level 1 inputs. Because of their short-term nature, short-term corporate bonds are not frequently traded. Although there are observable quotes for these securities, the markets are not considered active. Accordingly, the fair values of these investments are based on Level 2 inputs. The Company recognizes transfers between Levels 1 through 3 of the fair value hierarchy at the beginning of the reporting period. The Company believes that the carrying values of all other financial instruments approximate their current fair values due to their nature and respective durations.

Allowance for Doubtful Accounts

The Company evaluates the collectibility of accounts receivable based on a combination of factors. In cases where the Company is aware of circumstances that may impair a specific customer's ability to meet its financial obligations subsequent to the original sale, the Company will record 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 records allowances for doubtful accounts based primarily on the length of time the receivables are past due based on the terms of the originating transaction, the current business environment and its historical experience. Uncollectible accounts are charged against the allowance for doubtful accounts when all cost effective commercial means of collection have been exhausted.

Concentration of Credit Risk

Financial instruments that potentially subject the Company to significant concentrations of credit risk consist principally of cash and cash equivalents, investments in marketable securities, and accounts receivable.

The Company invests its cash equivalents primarily in money market mutual funds. Cash equivalents are maintained with high quality institutions, the composition and maturities of which are regularly monitored by management. The Company had $0.5 million of FDIC insured cash and cash equivalents at December 31, 2011. Investments in marketable securities are generally in high-credit quality debt instruments. Such investments are made only in instruments issued or enhanced by high-quality institutions. The Company has not realized any credit losses related to these investments.

The Company's trade accounts receivable are primarily derived from sales to OEMs in the computer industry (see Note 12). The Company performs credit evaluations of its customers' financial condition and limits the amount of credit extended when deemed necessary, but generally requires no collateral. Credit quality is monitored by evaluation of credit scores and collection history. The Company believes that the concentration of credit risk in its trade receivables is moderated by its credit evaluation process, relatively short collection terms, the high level of credit worthiness of its customers, foreign credit insurance and letters of credit issued on the Company's behalf. Reserves are maintained for potential credit losses, and such losses historically have not been significant and have been within management's expectations. Potential credit losses are limited to the gross value of accounts receivable.

Inventories

Inventories are valued at the lower of actual cost to purchase or manufacture the inventory or the net realizable value of the inventory. Cost is determined on an average cost basis which approximates actual cost on a first-in, first-out basis and includes raw materials, labor and manufacturing overhead. At each balance sheet date, the Company evaluates its ending inventory quantities on hand and on order and records a provision for excess quantities and obsolescence. Among other factors, the Company considers historical demand and forecasted demand in relation to the inventory on hand, competitiveness of product offerings, market conditions and product life cycles when determining obsolescence and net realizable value. In addition, the Company considers changes in the market value of components in determining the net realizable value of its inventory. Provisions are made to reduce excess or obsolete inventories to their estimated net realizable values. Once established, write-downs are considered permanent adjustments to the cost basis of the excess or obsolete inventories.

Property and Equipment

Property and equipment are recorded at cost and depreciated on a straight-line basis over their estimated useful lives, which generally range from three to seven years. Leasehold improvements are recorded at cost and amortized on a straight-line basis over the shorter of their estimated useful lives or the remaining lease term.

The Company evaluates the recoverability of the carrying value of long-lived assets held and used by the Company for impairment on at least an annual basis or whenever events or changes in circumstances indicate that their carrying value may not be recoverable. When such factors and circumstances exist, the Company compares the projected undiscounted future net cash flows associated with the related asset or group of assets over their estimated useful lives against their respective carrying amount. If the carrying value is determined not to be recoverable from future operating cash flows, the asset is deemed impaired and an impairment loss is recognized to the extent the carrying value exceeds the estimated fair value of the asset. The fair value of the asset or asset group is based on market value when available, or when unavailable, on discounted expected cash flows. The Company's management believes there is no impairment of long-lived assets as of December 31, 2011. There can be no assurance, however, that market conditions will not change or demand for the Company's products will continue, which could result in future impairment of long-lived assets.

Warranty Reserve

The Company offers product warranties generally ranging from one to three years, depending on the product and negotiated terms of any purchase agreements with customers. Such warranties require the Company to repair or replace defective product returned to the Company during such warranty period at no cost to the customer. Warranties are not offered on sales of excess component inventory. The Company records an estimate for warranty-related costs at the time of sale based on its historical and estimated product return rates and expected repair or replacement costs (see Note 3). Such costs have historically been within management's expectations and the provisions established.

Stock-Based Compensation

The Company accounts for equity issuances to non-employees in accordance with ASC Topic 505. All transactions in which goods or services are the consideration received for the issuance of equity instruments are accounted for based on the fair value of the consideration received or the fair value of the equity instrument issued, whichever is more reliably measurable. The measurement date used to determine the fair value of the equity instrument issued is the earlier of the date on which the third-party performance is complete or the date on which it is probable that performance will occur.

In accordance with ASC Topic 718, employee and director stock-based compensation expense recognized during the period is based on the value of the portion of stock-based payment awards that is ultimately expected to vest during the period. Given that stock-based compensation expense recognized in the consolidated statements of operations is based on awards ultimately expected to vest, it has been reduced for estimated forfeitures. ASC Topic 718 requires forfeitures to be estimated at the time of grant and revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The Company's estimated average forfeiture rates are based on historical forfeiture experience and estimated future forfeitures.

The fair value of common stock option awards to employees and directors is calculated using the Black-Scholes option pricing model. The Black-Scholes model requires subjective assumptions regarding future stock price volatility and expected time to exercise, along with assumptions about the risk-free interest rate and expected dividends, all of which affect the estimated fair values of the Company's common stock option awards. The expected term of options granted is calculated as the average of the weighted vesting period and the contractual expiration date of the option. This calculation is based on the safe harbor method permitted by the SEC in instances where the vesting and exercise terms of options granted meet certain conditions and where limited historical exercise data is available. The expected volatility is based on the historical volatility of the Company's common stock. The risk-free rate selected to value any particular grant is based on the U.S. Treasury rate that corresponds to the expected term of the grant effective as of the date of the grant. The expected dividend assumption is based on the Company's history and management's expectation regarding dividend payouts. Compensation expense for common stock option awards with graded vesting schedules is recognized on a straight-line basis over the requisite service period for the last separately vesting portion of the award, provided that the accumulated cost recognized as of any date at least equals the value of the vested portion of the award.

The Company recognizes the fair value of restricted stock awards issued to employees and outside directors as stock-based compensation expense on a straight-line basis over the vesting period for the last separately vesting portion of the awards. Fair value is determined as the difference between the closing price of our common stock on the grant date and the purchase price of the restricted stock award, if any, reduced by expected forfeitures.

Income Taxes

Deferred tax assets and liabilities are recognized to reflect the estimated future tax effects, calculated at currently effective tax rates, of future deductible or taxable amounts attributable to events that have been recognized on a cumulative basis in the consolidated financial statements. A valuation allowance related to a net deferred tax asset is recorded when it is more likely than not that some portion of the deferred tax asset will not be realized.

ASC Topic 740 prescribes a recognition threshold and measurement requirement for the financial statement recognition of a tax position that has been taken or is expected to be taken on a tax return and also provides guidance on de-recognition, classification, interest and penalties, accounting in interim periods, disclosure, and transition. Under ASC Topic 740 the Company may only recognize or continue to recognize tax positions that meet a "more likely than not" threshold.

Research and Development Expenses

Research and development expenditures are expensed in the period incurred.

Collaborative Agreements

In 2011, the Company entered into two memory technology Collaboration Agreements. The first agreement is a HyperCloud™ Technology Collaboration Agreement (the "IBM Agreement") with International Business Machines ("IBM"). Under the IBM Agreement, IBM and the Company have agreed to cooperate with respect to the qualification of HyperCloud™ technology for use with IBM servers and to engage in certain joint marketing efforts if qualification is achieved. IBM and the Company have agreed to commit resources and funds in support of these activities. The IBM Agreement is non-exclusive.

The second agreement is a Collaboration Agreement (the "HP Agreement") with Hewlett-Packard Company ("HP"). Under the HP Agreement, HP and the Company have agreed to cooperate with respect to the qualification of HyperCloud™ technology for use with HP servers and to engage in certain joint marketing efforts if qualification is achieved. HP and the Company have agreed to commit resources and funds in support of these activities. The HP Agreement is exclusive for a period of time. HP and the Company agree to collaborate on the future use of HyperCloud™ load reduction and rank multiplication technologies for next generation server memory for HP.

In 2011, the Company reimbursed IBM and HP $0.2 million and $0.1 million, respectively, for the cost of certain qualification activities. The payments are included in research and development expense in the accompanying consolidated statement of operations. The Company may be required to make additional payments to both IBM and HP for joint marketing activities if and when the HyperCloud™ technology is qualified. The Company's net sales will be determined after deduction of such customer allowances, in accordance with ASC 605-50.

There can be no assurance that the efforts undertaken under either of the IBM or HP collaboration agreements will result in any new revenues for the Company.

Through 2011, the Company maintained a collaborative arrangement with a partner in order to develop products using certain of the Company's proprietary technology. Under the arrangement, the development partner was granted a non-exclusive license to specified intellectual property for exclusive use in the development and production of ASIC chipsets for the Company. Both the Company and the development partner provided engineering project management resources at their own expense. The development partner was entitled to non-recurring engineering fees based upon the achievement of development milestones, and to a minimum portion of the Company's purchasing allocations for the component. Expenses incurred and paid to the development partner, which were insignificant in 2011 and amounted to $0.3 million in 2010, are included in research and development expense in the accompanying consolidated statements of operations. As of December 31, 2011, the operational and financial obligations under the agreement have been fulfilled.

Comprehensive Loss

ASC Topic 220 establishes standards for reporting and displaying comprehensive income (loss) and its components in the consolidated financial statements. Accumulated other comprehensive loss includes unrealized gains or losses on investments.

Risks and Uncertainties

The Company has invested and expects to continue to invest a significant portion of its research and development budget into the design of ASIC devices, including the HyperCloud™ memory subsystem. This new design and the products it is incorporated into are subject to increased risks as compared to the Company's existing products. The Company may be unable to achieve customer or market acceptance of the HyperCloud™ memory subsystem or other new products, or achieve such acceptance in a timely manner. The Company has experienced a longer qualification cycle than anticipated with its HyperCloud™ memory subsystems, and as of December 31, 2011 the product has not generated significant revenue relative to the Company's investment in the product. The Company has entered into collaborative agreements with both HP and IBM pursuant to which these OEMs have agreed to cooperate with the Company in efforts to qualify HyperCloud™ for use in their respective products. If qualification is achieved by one or both of these OEMs, the qualifying OEM will engage with the Company in joint marketing and further product development efforts. The Company and each of the OEMs have committed financial and other resources toward the collaboration. There can be no assurance that the efforts undertaken pursuant to either of the collaborative agreements will result in any new revenues for the Company. Further delays or any failure in placing or qualifying this product with HP, IBM or other potential customers would adversely impact the Company's results of operations.

The Company's operations in the PRC are subject to various political, geographical and economic risks and uncertainties inherent to conducting business in the PRC. These include, but are not limited to, (i) potential changes in economic conditions in the region, (ii) managing a local workforce that may subject the Company to uncertainties or certain regulatory policies, (iii) changes in other policies of the Chinese governmental and regulatory agencies, and (iv) changes in the laws and policies of the U.S. government regarding the conduct of business in foreign countries, generally, or in the PRC, in particular. Additionally, the Chinese government controls the procedures by which its local currency, the Chinese Renminbi ("RMB"), is converted into other currencies and by which dividends may be declared or capital distributed for the purpose of repatriation of earnings and investments. If restrictions in the conversion of RMB or in the repatriation of earnings and investments through dividend and capital distribution restrictions are instituted, the Company's operations and operating results may be negatively impacted. Restricted net assets of our subsidiary in the PRC totaled $0.6 million and $2.0 million at December 31, 2011 and January 1, 2011, respectively.

Foreign Currency Remeasurement

The functional currency of the Company's foreign subsidiary is the U.S. dollar. Local currency financial statements are remeasured into U.S. dollars at the exchange rate in effect as of the balance sheet date for monetary assets and liabilities and the historical exchange rate for nonmonetary assets and liabilities. Expenses are remeasured using the average exchange rate for the period, except items related to nonmonetary assets and liabilities, which are remeasured using historical exchange rates. All remeasurement gains and losses are included in determining net loss. Transaction gains and losses were not significant in 2011 and 2010.

Net Loss Per Share

Basic net loss per share is calculated by dividing net loss by the weighted-average common shares outstanding during the year, excluding unvested shares issued pursuant to restricted share awards under the Company's share-based compensation plans. Diluted net loss per share is calculated by dividing the net loss by the weighted-average shares and dilutive potential common shares outstanding during the year. Dilutive potential shares consist of dilutive shares issuable upon the exercise or vesting of outstanding stock options and restricted stock awards, respectively, computed using the treasury stock method. In periods of losses, basic and diluted loss per share are the same, as the effect of stock options and unvested restricted share awards on loss per share is anti-dilutive.

New Accounting Pronouncements

In May 2011, the FASB issued Accounting Standards Update ("ASU") No. 2011-4, Fair Value Measurement ("ASU 11-4"). ASU 11-4 amends existing guidance to achieve convergence in measurement and disclosure between U.S. Generally Accepted Accounting Standards ("GAAP") and International Financial Reporting Standards ("IFRS"). ASU 11-4 is effective for fiscal year 2012. The Company is currently evaluating the impact that ASU 11-4 will have on its consolidated financial statements.

In June 2011, the FASB issued ASU No. 2011-5, Comprehensive Income ("ASU 11-5"). ASU 11-5 amends existing guidance to increase the prominence of items reported in other comprehensive income and to facilitate convergence of U.S. GAAP and IFRS. ASU 11-5 is effective for fiscal year 2012. The Company is currently evaluating the impact that ASU 11-4 will have on its consolidated financial statements.