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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) | 12 Months Ended
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May 31, 2024
ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES |
Organization | Aehr Test Systems (the “Company”) was incorporated in California in May 1977 and primarily designs, engineers and manufactures test and burn-in equipment used in the semiconductor industry. The Company’s principal products are the FOX-XP, FOX-NP, and FOX-CP wafer contact parallel test and burn-in systems, the WaferPak full wafer contactor, the DiePak Carrier, the WaferPak Aligner, the DiePak Autoloader, and test fixtures.
Principles of Consolidation | The consolidated financial statements include the accounts of the Company and its wholly-owned foreign subsidiaries. Intercompany accounts and transactions have been eliminated.
Foreign Currency Translation and Transactions | Assets and liabilities of the Company’s foreign subsidiaries are translated into U.S. Dollars from their functional currencies using the exchange rate in effect at the balance sheet date. Additionally, revenues and expenses are translated using exchange rates approximating average rates prevailing during the fiscal year. Translation adjustments that arise from translating their financial statements from their local currencies to U.S. Dollar are accumulated and reflected as a separate component of shareholders’ equity. Transaction gains and losses that arise from exchange rate changes denominated in currencies other than the local currency are included in the consolidated statements of operations as incurred.
Use of Estimates | The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Significant estimates in the Company’s consolidated financial statements include revenue recognition, inventory valuation and accounting for income taxes.
Cash and Cash Equivalents | Cash equivalents consist of money market instruments purchased with an original maturity of three months or less. These investments are reported at fair value.
Accounts Receivable and Allowance for Credit Losses | Accounts receivable are derived from the sale of products throughout the world to semiconductor manufacturers, semiconductor contract assemblers, electronics manufacturers and burn-in and test service companies. Accounts receivable are recorded at the invoiced amount and are not interest bearing. The Company maintains an allowance for credit losses for expected uncollectible accounts receivable and assess collectibility by reviewing accounts receivable on a collective basis where similar risk characteristics exist and on an individual basis when specific customers with known disputes or collectibility issues are identified. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. Changes in circumstances, such as an unexpected material adverse change in a major customer’s ability to meet its financial obligation to the Company, may require the Company to further adjust its estimates of the recoverability of accounts receivable. The credit losses recognized on accounts receivable during the years ended May 31, 2024, 2023 and 2022 were not significant and management has determined that no allowance for credit losses was required as of May 31, 2024 and 2023.
Concentration of Credit Risk | Financial instruments which subject the Company to concentrations of credit risk consist principally of cash and cash equivalents and accounts receivable. The Company’s cash and cash equivalents are generally deposited with major financial institutions in the United States, Philippines, Germany and Taiwan. The Company invests its excess cash in money market funds and U.S. Treasury securities. The Company’s cash and investment balances held at banks and brokerage firms may at time exceed federally insured levels. The Company has not experienced any material losses on its money market funds or short-term cash deposits. The Company performs credit evaluations of its customers’ financial condition and generally requires no collateral. The Company had revenues from individual customers in excess of 10% of total revenues as follows:
|  | Year Ended May 31 |
|  | 2024 |  |  | 2023 |  |  | 2022 |
Customer A |  |  | 67.3 | % |  |  | 78.8 | % |  |  | 81.8 | %
Customer B |  |  | 16.7 | % |  | * |  |  | * |
Customer C |  | * |  |  |  | 10.4 | % |  | * |
* Amount was less than 10% of total revenue The Company had gross accounts receivable from individual customers in excess of 10% of gross accounts receivable as follows:
|  | May 31, |
|  | 2024 |  |  | 2023 |
Customer A |  |  | 49.9 | % |  |  | 81.6 | %
Customer B |  |  | 16.5 | % |  |  | 16.5 | %
Customer C |  |  | 12.3 | % |  | * |
* Amount was less than 10% of total gross accounts receivable
Inventories | Inventories include material, labor and overhead, and are stated at the lower of cost or net realizable value, with cost determined on a first-in, first-out (FIFO) basis. Net realizable value is the estimated selling prices in the ordinary course of business, less costs of completion, disposal and transportation. Provisions for excess, obsolete and unusable inventories are made after management’s evaluation of future demand and market conditions. If actual future demand or market conditions become less favorable than those projected by management, additional adjustment for excess or obsolete inventory may be required, and would be reflected in cost of sales in the period the revision is made.
Property and Equipment | Property and equipment are stated at cost less accumulated depreciation and amortization. Major improvements are capitalized, while repairs and maintenance are expensed as incurred. Leasehold improvements are amortized over the lesser of their estimated useful lives or the term of the related lease. Furniture and fixtures, machinery and equipment, and test equipment are depreciated on a straight-line basis over their estimated useful lives. The ranges of estimated useful lives are generally as follows:
Furniture and fixtures | 2 to 5 years
Machinery and equipment | 3 to 5 years
Test equipment | 4 to 5 years
Long-Lived Assets | The Company evaluates long-lived assets for impairment whenever events or changes in circumstances indicate the carrying value of an asset group may not be recoverable. An impairment loss is recognized when estimated future cash flows expected to result from the use of the asset, including disposition, are less than the carrying value of the asset. Such an impairment charge would be measured as the excess of the carrying value of the asset over its fair value.
Warranty Reserves | The Company provides for the estimated cost of product warranties at the time revenues are recognized on the products shipped. While the Company engages in extensive product quality programs and processes, including actively monitoring and evaluating the quality of its component suppliers, the Company’s warranty obligation is affected by product failure rates, material usage and service delivery costs incurred in correcting a product failure. Should actual product failure rates, material usage or service delivery costs differ from the Company’s estimates, revisions to the estimated warranty liability would be required. The standard warranty period is one year for systems and ninety days for parts and service.
Revenue Recognition | The Company recognizes revenue when promised goods or services are transferred to customers in an amount that reflects the consideration to which the Company expects to be entitled in exchange for those goods or services by following a five-step process: (1) identify the contract with a customer, (2) identify the performance obligations in the contract, (3) determine the transaction price, (4) allocate the transaction price, and (5) recognize revenue when or as the Company satisfies a performance obligation, as further described below. Performance obligations include sales of systems, WaferPak contactors, spare parts, and services, as well as installation and training services included in customer contracts. A contract’s transaction price is allocated to each distinct performance obligation. In determining the transaction price, the Company evaluates whether the price is subject to refund or adjustment to determine the net consideration to which the Company expects to be entitled. The Company generally does not grant return privileges, except for defective products during the warranty period. For contracts that contain multiple performance obligations, the Company allocates the transaction price to the performance obligations on a relative standalone selling price basis. Standalone selling prices are based on multiple factors including, but not limited to, historical discounting trends for products and services and pricing practices in different geographies. Revenue for systems and spares is recognized at a point in time, which is generally upon shipment or delivery and evidenced by transfer of title and risk of loss to the customer. Revenue from services is recognized over time as the customer receives the benefit over the contractual period of generally one year or less. The Company has elected the practical expedient to not assess whether a contract has a significant financing component as the Company’s standard payment terms are less than one year. The Company sells its products primarily through a direct sales force. In certain international markets, the Company sells its products through independent distributors.
Shipping And Handling Costs | Amounts billed to customers for shipping and handling of products are included in revenue. Costs incurred related to shipping and handling of products are included in cost of revenue.
Stock-based Compensation Expense | Stock-based compensation expense consists of expenses for stock options, restricted stock units (“RSUs”), performance RSUs (“PRSUs”), and an employee stock purchase plan (“ESPP”). Stock-based compensation cost for stock options and ESPP purchase rights is measured at each grant date, based on the fair value of the award using the Black-Scholes option valuation model, and is recognized as expense over the employee’s requisite service period. For RSUs, PRSUs, restricted shares and performance restricted shares, stock-based compensation expense is based on the fair value of the Company’s common stock at the grant date, and is recognized as expense over the employee’s requisite service period. All of the Company’s stock-based compensation is accounted for as an equity instrument.
Income Taxes | The Company accounts for income taxes in accordance with the authoritative guidance, which requires income tax effects for changes in tax laws to be recognized in the period in which the law is enacted. Deferred tax assets and liabilities are recognized for the estimated future tax effects of temporary differences between the book and tax bases of assets and liabilities. Deferred tax assets are also recognized for net operating loss and tax credit carryforwards. Deferred tax assets are offset by a valuation allowance to the extent it is more likely than not that they are not expected to be realized. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply in the years in which those temporary differences are expected to be recovered or settled. Deferred tax assets and liabilities are adjusted for the effect of a change in tax rates, laws, or status when the change is enacted. During the year ended May 31, 2024, the Company concluded that its deferred tax assets are more likely than not to become realizable, and as such, the Company reversed all $21.9 million of its existing valuation allowance. The conclusion that a valuation allowance was no longer needed was based on three years of cumulative pre-tax income, current year utilization of federal and state net operating losses, combined with estimates of future years' pre-tax income that are sufficient to realize the remaining deferred tax assets. The amount of the deferred tax asset considered realizable can change if estimates of future taxable income change or if objective negative and positive evidence change. As of May 31, 2023, the Company maintained a full valuation allowance against its deferred tax assets. The Company may recognize the tax benefit from an uncertain tax position only if it is more likely than not such tax position will be sustained on examination by the taxing authorities, based solely on the technical merits of the respective tax position. The tax benefits recognized in the consolidated financial statements from such a tax position should be measured based on the largest benefit having a greater than 50% likelihood of being realized upon ultimate settlement with the tax authority. Interest and penalties related to uncertain tax positions are recognized in the provision for income taxes.
Comprehensive Income (Loss) | Comprehensive income (loss) generally represents all changes in shareholders’ equity except those resulting from investments or contributions by shareholders. Unrealized gains and losses from available-for-sale securities and on foreign currency translation adjustments are included in the Company’s components of comprehensive income (loss), which are excluded from net income. Comprehensive income (loss) is included in the consolidated statements of comprehensive income.
Reclassifications | Certain reclassifications have been made to the previous year consolidated financial statements to conform to the current period presentation. The reclassifications had no impact on net income, total assets, total liabilities, or shareholders’ equity.
Accounting Standards Adopted | In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) 2016-13, Financial Instruments – Credit Losses (Topic 326), that requires measurement and recognition of expected credit losses for financial assets held based on historical experience, current conditions, and reasonable and supportable forecasts that affect the collectibility of the reported amount. The Company adopted this update beginning in the first quarter of its fiscal year ended May 31, 2024 on a modified retrospective basis and the adoption had no material impact on the consolidated financial statements.
Recent Accounting Pronouncements Not Yet Adopted | Improvements to Reportable Segment Disclosures: In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (ASU 2023-07), which requires disclosure of incremental segment information on an annual and interim basis. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 on a retrospective basis. The Company is currently evaluating the effect of this pronouncement on its disclosures. Improvements to Income Tax Disclosures: In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures, which expands the disclosures required for income taxes. This ASU is effective for fiscal years beginning after December 15, 2024, with early adoption permitted. The amendment should be applied on a prospective basis while retrospective application is permitted. The Company is currently evaluating the effect of this pronouncement on its disclosures.

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