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The Company and Significant Accounting Policies (Policies)

12 Months Ended

Jun. 30, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries after elimination of inter-company balances and transactions. The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP").

Certain reclassifications have been made to prior period amounts to conform to current period presentation. Such reclassifications have no effect on revenues, income from operations or net income as previously reported.

Use of Estimates

The preparation of our consolidated financial statements in conformity with U.S. GAAP requires the Company to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. To the extent there are material differences between these estimates and actual results, the Company's consolidated financial statements will be affected. On an ongoing basis, the Company evaluates the estimates, judgments and assumptions including those related to stock rotation returns, price adjustments, inventory reserves, warranty accrual, income taxes, share-based compensation, variable interest entities and useful lives for property, plant and equipment and intangible assets.

Foreign Currency Transactions and Translation

Most of the Company's principal subsidiaries use U.S. dollars as their functional currency because their transactions are primarily conducted and settled in U.S. dollars. All of their revenue and a significant portion of their operating expenses are denominated in U.S. dollars. The functional currencies for the Company's in-house packaging and testing facilities in China are U.S. dollars, and a significant majority of their capital expenditures are denominated in U.S. dollars. Foreign currency transactions are translated into the functional currencies using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses, resulting from the settlement of such transactions and from the remeasurement of monetary assets and liabilities denominated in foreign currencies using exchange rates at balance sheet date and non-monetary assets and liabilities using historical exchange rates, are recognized in the statements of income.

For the Company's subsidiaries which use the local currency as their functional currency, their results and financial position are translated into U.S. dollars using exchange rates at balance sheet dates for assets and liabilities and using average exchange rates for income and expenses items. The resulting translation differences are presented as a separate component of accumulated other comprehensive income (loss) in shareholders' equity.

Cash and Cash Equivalents

Cash and cash equivalents primarily consist of cash on hand and short-term bank deposits with original maturities of three months or less. Cash equivalents are highly liquid investments with stated maturities of three months or less as of the dates of purchase. The carrying amounts reported for cash and cash equivalents are considered to approximate fair values based upon their short maturities.

Cash and cash equivalents are maintained with reputable major financial institutions. If, due to current economic conditions, one or more of the financial institutions with which the Company maintains deposits fails, the Company's cash and cash equivalents may be at risk. Deposits with these banks may exceed the amount of insurance provided on such deposits; however, these deposits typically may be redeemed upon demand and, therefore, bear minimal risk.

Accounts Receivable

The allowance for doubtful accounts is based on assessment of the collectibility of accounts receivable from customers. The Company reviews the allowance by considering factors such as historical collection experience, credit quality, age of the accounts receivable balances and current economic conditions that may affect a customer's ability to pay. The Company writes off a receivable and charges against its recorded allowance when it has exhausted its collection efforts without success.

Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy is based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value, which are the following:


•	Level 1 - Quoted prices in active markets for identical assets or liabilities.


•	Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.


•	Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Fair Value of Financial Instruments

The fair values of the Company's cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities and short term bank borrowings approximate their carrying values due to their short-term maturities. The fair value of the Company’s capital lease obligations approximate the carrying value due to the short-term maturity of the leases.

Inventories

The Company carries inventories at the lower of cost (determined on a first-in, first-out basis) or market value. Cost includes semiconductor wafer and raw materials, labor, depreciation expenses and other manufacturing expenses and overhead, and packaging and testing fees paid to third parties if subcontractors are used. Inventory reserves are made based on the Company's periodic review of inventory quantities on hand as compared with its sales forecasts, historical usage, aging of inventories, production yield levels and current product selling prices. If actual market conditions are less favorable than those forecasted by management, additional future inventory write-downs may be required that could adversely affect the Company's operating results. Inventory reserves once established are not reversed until the related inventory has been sold or scrapped.

Variable Interest Entities and Investment in APM

The Company is required to evaluate all transactions and relationships with potential variable interest entities (VIEs) to determine whether it is the primary beneficiary of the entities, and therefore is required to consolidate the VIEs. The Company's overall methodology for evaluating transactions and relationships under the VIE requirements includes the following two steps:


•	determine whether the entity meets the criteria to qualify as a VIE; and


•	determine whether the Company is the primary beneficiary of the VIE.

In performing the first step, the significant factors and judgments that the Company considers in making the determination as to whether an entity is a VIE include:


•	the design of the entity, including the nature of risks and the purpose for which the entity was created, to determine the variability that the entity was designed to create and distribute to its interest holders;


•	the nature of the Company's involvement with the entity;


•	whether control of the entity may be achieved through arrangements that do not involve voting equity;


•	whether there is sufficient equity investment at risk to finance the activities of the entity; and


•	whether parties other than the equity holders have the obligation to absorb expected losses or the right to receive residual returns.

For each VIE identified, the Company then performs the second step and evaluate whether it is the primary beneficiary of the VIE by considering the following significant factors and judgments:


•	whether the Company's variable interest absorbs the majority of the VIE's expected losses;


•	whether the Company's variable interest receives the majority of the VIE's expected returns; and


•	whether the Company has the ability to make decisions that significantly affect the VIE's results and activities.

Based on the Company's evaluation of the above factors and judgments, no VIEs were identified as of June 30, 2012. Prior to the APM acquisition in December 2010, the Company held 43.0% equity interest in APM which was identified as a VIE. However, the Company was not considered as the primary beneficiary and hence not required to consolidate the financial statements of APM. The equity interest in APM was accounted for using the equity method of accounting through the date of acquisition.

Property, Plant and Equipment

Property, plant and equipment are stated at historical cost less accumulated depreciation. Historical cost includes expenditure that is directly attributable to the acquisition of the items and the costs incurred to make the assets ready for their intended use.

Depreciation is provided for on a straight-line basis over the estimated useful lives of the related assets as follows:



Building		20 years
Manufacturing machinery and equipment		3 to 10 years
Equipment and tooling		5 years
Computer equipment and software		3 years
Office furniture and equipment		5 years
Leasehold improvements		2 to 15 years based on shorter of expected economic useful life or the lease term

Equipment and construction in progress represent equipment received but necessary installation has not been performed or leasehold improvements have been started but not yet completed. Equipment and construction in progress are stated at cost and transferred to respective asset class when fully completed and ready for their intended use.

Internal use software development costs are capitalized to the extent that the costs are directly associated with the development of identifiable and unique software products controlled by the Company that will probably generate economic benefits beyond one year. Costs incurred during the application development stage are required to be capitalized. The application development stage is characterized by software design and configuration activities, coding, testing and installation. Training costs and maintenance are expensed as incurred, while upgrades and enhancements are capitalized if it is probable that such expenditures will result in additional functionality. Costs included employee costs incurred to develop the software and implementation fees paid to outside consultants. Internal developed computer software are amortized over its estimated useful lives of five years starting from the date when it is ready for its intended use.

Gains and losses on disposals are determined by comparing the proceeds with the carrying amount and are recognized as selling, general and administrative expenses in the statements of income. Costs of maintenance and repairs that do not improve or extend the lives of the respective assets are expensed as incurred.

Business Combinations

Effective January 1, 2009, the Company adopted Financial Accounting Standards Board ("FASB") ASC 805, Business Combinations (“ASC 805”). This updated guidance requires the acquirer of a business to recognize and measure in its financial statements the identifiable assets acquired, the liabilities assumed and any noncontrolling interest in the acquiree, measured at their fair values as of the acquisition date. Under ASC 805, the Company recognizes contingent consideration arrangements at their acquisition-date fair values with subsequent changes in fair value reflected in earnings, recognizes pre-acquisition loss and gain contingencies at their acquisition-date fair values (with certain exceptions), capitalizes in-process research and development assets, expenses acquisition-related transaction costs as incurred, and limits the capitalization of acquisition-related restructuring as of the acquisition date. In addition, changes in accounting for deferred tax asset valuation allowances and acquired income tax uncertainties after the measurement period are recognized in earnings rather than as an adjustment to the cost of acquisition.

Goodwill

Goodwill and intangible assets with indefinite useful lives are not amortized, but are tested for impairment at least annually, or whenever changes in circumstances indicate that the carrying amount of goodwill or intangible assets may not be recoverable. These tests are performed at the reporting unit level using a two-step, fair-value based approach. In testing for a potential impairment of goodwill, the Company first compares the carrying value of assets and liabilities to the estimated fair value. If estimated fair value is less than carrying value, then potential impairment exists. The amount of any impairment is then calculated by determining the implied fair value of goodwill using a hypothetical purchase price allocation, similar to that which would be applied if it were an acquisition and the purchase price was equivalent to fair value as calculated in the first step. Impairment is equivalent to any excess of goodwill carrying value over its implied fair value.

The process of evaluating the potential impairment of goodwill requires significant judgment at many points during the analysis, including calculating fair value of each reporting unit based on estimated future cash flows and discount rates to be applied.

Intangible Assets

Intangible assets are stated at cost less accumulated amortization. Intangible assets include patents and exclusive technology rights, trade names and customer relationships. Intangible assets with finite lives are amortized on a straight-line basis over the estimated periods of benefit, as follows:



Patents and exclusive technology rights		3 to 7 years
Trade name		3 years
Customer relationships		4 years

The Company evaluates its finite-lived intangible assets for impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an asset group to future undiscounted net cash flows expected to be generated by the asset group. If such assets are considered to be impaired, the impairment to be recognized is measured by the amount by which the carrying amount of the assets exceeds the fair value of the assets. Assets to be disposed of are reported at the lower of the carrying amount and fair value less costs to sell.

Impairment of Long-Lived Assets

Long-lived assets or asset groups are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset might not be recoverable. Factors that would necessitate an impairment assessment include a significant decline in the observable market value of an asset, a significant change in the extent or manner in which an asset is used, or any other significant adverse change that would indicate that the carrying amount of an asset or group of assets may not be recoverable. Where such factors indicate potential impairment, the recoverability of an asset or asset group is assessed by determining if the carrying value of the asset or asset group exceeds the sum of the projected undiscounted cash flows expected to result from the use and eventual disposition of the assets over the remaining economic life. The impairment loss is measured based on the difference between the carrying amount and estimated fair value.

Revenue Recognition

The Company recognizes revenue when there is persuasive evidence that an arrangement exists, delivery has occurred, the price to the buyer is fixed or determinable and when collectability is reasonably assured. The Company recognizes revenue when product is shipped to the customer, net of estimated stock rotation returns and price adjustments that it expects to provide to certain distributors.

The Company sells its products primarily to distributors, who in turn sell the products globally to various end customers. The Company allows stock rotation returns from certain distributors. Stock rotation returns are governed by contract and are limited to a specified percentage of the monetary value of products purchased by distributors during a specified period. The Company records an allowance for stock rotation returns based on historical returns and individual distributor agreements. The Company also provides special pricing to certain distributors, primarily based on volume, to encourage resale of the Company's products. The Company estimates the expected price adjustments at the time revenue is recognized based on distributor inventory levels, pre-approved future distributor selling prices, distributor margins and demand for its products. If actual stock rotation returns or price adjustments differ from their estimates, adjustments may be recorded in the period when the actual information is known. Allowance for price adjustments is recorded against accounts receivable and the provision for stock rotation rights is included in accrued liabilities on the consolidated balance sheets.

Revenue from certain distributors is deferred until the distributor resells the products to end customers due to price protection adjustments and right of returns that cannot be reliably measured. The deferred revenue, net of the associated deferred cost of the inventory, is recorded as deferred margin on the consolidated balance sheets.

Packaging and testing services revenue is recognized upon shipment of serviced products to the customer.

Product Warranty

The Company provides a standard one-year warranty for the products it sells. The Company accrues for estimated warranty costs at the time revenue is recognized. The Company's warranty obligation is affected by product failure rates, labor and material costs for replacing defective parts, related freight costs for failed parts and other quality assurance costs. The Company monitors its product returns for warranty claims and maintains warranty reserve based on historical experiences and anticipated warranty claims known at the time of estimation.

Shipping and Handling Costs

Shipping and handling costs are included in cost of goods sold.

Research and Development

Research and development costs are expensed as incurred.

Provision for Income Taxes

Income tax expense or benefit is based on income or loss before taxes. Deferred tax assets and liabilities are recognized principally for the expected tax consequences of temporary differences between the tax bases of assets and liabilities and their reported amounts.

The Company is subject to income taxes in a number of jurisdictions. Significant judgment is required in determining the worldwide provision for income taxes. There are many transactions and calculations for which the ultimate tax determination is uncertain during the ordinary course of business. The Company establishes accruals for certain tax contingencies based on estimates of whether additional taxes may be due. While the final tax outcome of these matters may differ from the amounts that were initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such determination is made.

Significant management judgment is also required in determining whether deferred tax assets will be realized in full or in part. When it is more likely than not that all or some portion of specific deferred tax assets such as net operating losses or research and experimentation tax credit carryforwards will not be realized, a valuation allowance must be established for the amount of the deferred tax assets that cannot be realized. We consider all available positive and negative evidence on a jurisdiction by jurisdiction basis when assessing whether it is more likely than not that deferred tax assets are recoverable. We consider evidence such as our past operating results, the existence of cumulative losses in recent years and our forecast of future taxable income.

In July 2006, the Financial Accounting Standards Board, or FASB, issued a guidance which clarifies the accounting for income taxes by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. The minimum threshold is defined as a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than fifty percent likely to be realized upon ultimate settlement. Although the guidance on the accounting for uncertainty in income taxes prescribes the use of a recognition and measurement model, the determination of whether an uncertain tax position has met those thresholds will continue to require significant judgment by management. If the ultimate resolution of tax uncertainties is different from what is currently estimated, a material impact on income tax expense could result.

Our provision for income taxes is subject to volatility and could be adversely impacted by changes in earnings or tax laws and regulations in various jurisdictions. We are subject to the continuous examination of our income tax returns by the Internal Revenue Service and other tax authorities. We regularly assess the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. To the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the impact of changes to reserves, as well as the related net interest and penalties.

Share-based Compensation Expense

The Company recognizes expense related to share-based compensation awards that are ultimately expected to vest based on estimated fair values on the date of grant using the Black-Scholes option valuation model. Share-based compensation expense is recognized on the accelerated vesting attribution basis over the requisite service period of the award, which generally equals the vesting period.

The Company maintains an equity-settled, share-based compensation plan which grant share options and restricted share units (the "RSUs") to employees, directors and consultants. In May 2010, the Company adopted the Employee Share Purchase Plan (the "ESPP"). The fair value of RSUs is based on the fair value of the Company's common share on the date of grant. The fair values of stock options and common stock issued under the ESPP are determined at the date of grant using the Black-Scholes option valuation model.

The Company determined the weighted average valuation assumptions as follows:


•	Expected term. It is determined by using the historical data of industry peers as adjusted for expected changes in future exercise patterns.

•

Forfeiture rate. It is estimated based on the historical average period of time that the awards were outstanding and forfeited. The estimate of forfeitures is adjusted over the requisite service period to the extent that actual forfeitures differ, or are expected to differ, from the prior estimates. Changes in estimated forfeitures are recognized in the period of change and impact the amount of stock compensation expenses to be recognized in future periods, which could be material if actual results differ significantly from our estimates.


•	Volatility. It is estimated based on that of the publicly traded shares of industry peers over a period equivalent to the expected term of the stock awards granted.


•	Risk-free interest rate. It is based on the yields of U.S. Treasury securities with maturities similar to the expected term of the awards granted.


•	Dividend yield. It is zero as the Company has never declared or paid any dividends and currently has no intention to pay dividends in the foreseeable future.

Comprehensive Income (loss)

Comprehensive Income (Loss)

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. The Company's other comprehensive income (loss) consists of cumulative foreign currency translation adjustments. Total comprehensive income (loss) is presented in the consolidated statements of shareholders' equity.

Leases

Leases entered into by the Company as a lessee are classified as capital or operating leases. Leases that transfer substantially the entire risks and benefits incidental to ownership are classified as capital leases. At the inception of a capital lease, an asset and an obligation are recorded at an amount equal to the lesser of the present value of the minimum lease payments and the asset’s fair market value at the beginning of each lease. Rental payments under operating leases are expensed as incurred.

Risks and Uncertainties

The Company is subject to certain risks and uncertainties. The Company believes changes in any of the following areas could have a material adverse effect on the Company's future financial position or results of operations or cash flows: new product development, including market receptiveness, operation of in-house manufacturing facilities, litigation or claims against the Company based on intellectual property, patent, product regulatory or other factors, competition from other products, general economic conditions, the ability to attract and retain qualified employees and ultimately to sustain profitable operations.

The semiconductor industry is characterized by rapid technological change, competition, competitive pricing pressures and cyclical market patterns. The Company's financial results are affected by a wide variety of factors, including general economic conditions specific to the semiconductor industry and the Company's particular market, the timely implementation of new products, new manufacturing process technology and the ability to safeguard patents and intellectual property in a rapidly evolving market. In addition, the semiconductor market has historically been cyclical and subject to significant economic downturns. As a result, the Company may experience significant period-to-period fluctuations in operating results due to the factors mentioned above or other factors.

The Company has recently transitioned from a fabless to a “fab-lite” business model by completing the acquisition of the Oregon fab on January 31, 2012. Under this model, the Company allocates its wafer manufacturing requirements to both in-house capacity and selected third-party foundries. The Company also deploys and implements its proprietary power discrete processes and equipment at third-party foundries to maximize the performance and quality of its products.

The Company's revenue may be impacted by its ability to obtain adequate wafer supplies from third-party foundries and utilize wafer production and packaging and testing capacity from its in-house facilities. Currently the Company's main third-party foundry is Shanghai Hua Hong NEC Electronic Company Limited, or HHNEC, located in Shanghai, China. HHNEC has been manufacturing wafers for the Company since 2002. HHNEC manufactured 49.9% and 68.7% of the wafers used in the Company's products for the fiscal year ended June 30, 2012 and 2011, respectively. Although the Company believes that its volume of production allows the Company to secure favorable pricing and priority in allocation of capacity in its third-party foundries, if the foundries' capacities are constrained due to market demands, HHNEC, together with other foundries from which the Company purchases wafers, may not be willing or able to satisfy all of the Company's manufacturing requirements on a timely basis and/or at favorable prices The Company is also subject to the risks of service disruptions and raw material shortages by its foundries. Such disruptions, shortages and price increases could harm the Company's operating results. In addition, if the Company fails to utilize its manufacturing facilities' capacity at a desirable level, its financial condition and results of operations will be adversely effected.