Nature of operations – Diodes Incorporated and its subsidiaries (collectively, the “Company”) is a leading global manufacturer and supplier of high-quality, application specific standard products within the broad discrete, logic and analog semiconductor markets, serving the consumer electronics, computing, communications, industrial and automotive markets. These products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices including LED drivers, DC-DC switching and linear voltage regulators and voltage references along with special function devices including USB power switches, load switches, voltage supervisors and motor controllers. The products are sold primarily throughout Asia, North America and Europe.

Principles of consolidation – The consolidated financial statements include the accounts of Diodes Incorporated, its wholly-owned subsidiaries and its controlled majority-owned subsidiaries. The Company accounts for equity investments in companies over which it has the ability to exercise significant influence, but does not hold a controlling interest, under the equity method, and it records its proportionate share of income or losses in interest and other, net in the consolidated statements of income. All significant intercompany balances and transactions have been eliminated.

Revenue recognition – Revenue is recognized when there is persuasive evidence that an arrangement exists, when delivery has occurred, when the price to the buyer is fixed or determinable and when collectability of the receivable is reasonably assured. These elements are met when title to the products is passed to the buyers, which is generally when product is shipped to the customers. Generally, the Company recognizes revenue upon shipment to manufacturers (direct ship) as well as upon sales to distributors using the "sell in" model, which is when product is shipped to the distributors (point of purchase).

Certain customers have limited rights of return and/or are entitled to price adjustments on products held in their inventory or upon sale to their end customers. The Company reduces net sales in the period of sale for estimates of product returns, distributor price adjustments and other allowances. The Company's reserve estimates are based upon historical data as well as projections of sales, distributor inventories, price adjustments, average selling prices and market conditions. Actual returns and adjustments could be significantly different from the Company's estimates and provisions.

The Company records allowances/reserves for the following items: (i) ship and debit, which arise when the Company, from time to time based on market conditions, issues credit to certain distributors upon their shipments to their end customers, (ii) stock rotation, which are contractual obligations that permit certain distributors, twice a year, to return a portion of their inventory based on historical shipments to them in exchange for an equal and offsetting order, and (iii) price protection, which arise when market conditions cause average selling prices to decrease and the Company issues credit to certain distributors on their inventory.

Ship and debit reserves are recorded as a reduction to net sales with a corresponding reduction to accounts receivable. Stock rotation reserves are recorded as a reduction to net sales with a corresponding reduction to cost of goods sold for the estimated cost of inventory that is expected to be returned. Price protection reserves are recorded as a reduction to net sales with a corresponding increase in accrued liabilities. Revenue is reduced in the period of sale for estimates of product returns and other allowances including distributor adjustments, which were approximately $48 million, $41 million and $32 million in 2012, 2011 and 2010, respectively.

Product warranty – The Company generally warrants its products for a period of one year from the date of sale. Historically, warranty expense has not been material.

Cash and cash equivalents – The Company considers all highly liquid investments with maturity of three months or less at the date of purchase to be cash equivalents. The Company currently maintains substantially all of its day-to-day operating cash balances with major financial institutions.

Allowance for doubtful accounts – The Company evaluates the collectability of its accounts receivable based upon a combination of factors, including the current business environment and historical experience. If the Company is aware of a customer's inability to meet its financial obligations, it records an allowance to reduce the receivable to the amount it reasonably believes will be collected from the customer. For all other customers, the Company records an allowance based upon the amount of time the receivables are past due. If actual accounts receivable collections differ from these estimates, an adjustment to the allowance may be necessary with a resulting effect on operating expense. Accounts receivable are presented net of a valuation allowances, which were approximately $2 million, $2 million and $1 million in 2012, 2011 and 2010, respectively.

Inventories – Inventories are stated at the lower of cost or market value. Cost is determined principally by the first-in, first-out method. Cost includes materials, labor, and manufacturing overhead related to the purchase and production of inventories. Any write-down of inventory to the lower of cost or market at the close of a fiscal period creates a new cost basis that subsequently would not be marked up based on changes in underlying facts and circumstances. On an on-going basis, the Company evaluates inventory for obsolescence and slow-moving items. This evaluation includes analysis of sales levels, sales projections, and purchases by item, as well as raw material usage related to the Company's manufacturing facilities. If the Company's review indicates a reduction in utility below carrying value, it reduces inventory to a new cost basis. If future demand or market conditions are different than the Company's current estimates, an inventory adjustment to write down inventory may be required, and would be reflected in cost of goods sold in the period the revision is made.

Property, plant and equipment – Purchased property, plant and equipment is recorded at historical cost and acquired property, plant and equipment is recorded at fair value on the date of acquisition. Property, plant and equipment is depreciated using straight-line methods over the estimated useful lives, which range from 20 to 55 years for buildings and 3 to 10 years for machinery and equipment. The estimated lives of leasehold improvements range from 3 to 5 years, and are amortized over the shorter of the remaining lease term or their estimated useful lives.

Goodwill and other intangible assets – Goodwill is tested for impairment on an annual basis, on October 1, and between annual tests if indicators of potential impairment exist. For 2012 and 2011, the Company used the simplified goodwill impairment test, which allows the Company to first assess qualitatively whether it is necessary to perform step one of the two-step annual goodwill impairment test. The Company is required to perform step one and calculate the fair value of its reporting units only if the Company concludes that it is more likely than not that a reporting unit's fair value is less than its carrying value (that is, a likelihood of more than 50%). The qualitative analysis, which we refer to as step zero, was performed and the Company considered all relevant factors specific to its reporting units. Some factors considered in step zero were macroeconomic conditions, industry and market considerations, cost factors, overall financial performance, events affecting a reporting unit and other relevant entity-specific events. The Company's conclusion of step zero was that goodwill is deemed to be not impaired and no further testing is required until the next annual test date (or sooner if conditions or events before that date raise concerns of potential impairment in the business). No impairment of goodwill has been identified during any of the periods presented.

Impairment of long-lived assets – The Company's long-lived assets are reviewed whenever events or changes in circumstances indicate that the carrying value may not be recoverable. The Company considers assets to be impaired if the carrying value exceeds the undiscounted projected cash flows from operations. If impairment exists, the assets are written down to fair value or to the projected discounted cash flows from related operations. As of December 31, 2012, the Company expects the remaining carrying value of assets to be recoverable. No impairment of long-lived assets has been identified during any of the periods presented. The weighted average amortization period for amortizable intangible assets is approximately 8 years.

Income taxes – Income taxes are accounted for using an asset and liability approach whereby deferred tax assets and liabilities are recorded for differences in the financial reporting bases and tax bases of the Company's assets and liabilities. If it is more likely than not that some portion of deferred tax assets will not be realized, a valuation allowance is recorded.

Generally accepted accounting principles in the United States of America (“GAAP”) prescribes a comprehensive model for how companies should recognize, measure, present, and disclose in their financial statements uncertain tax positions taken or expected to be taken on a tax return. Tax positions shall initially be recognized in the financial statements when it is more likely than not the position will be sustained upon examination by the tax authorities. Such tax positions shall initially and subsequently be measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon ultimate settlement with the tax authority assuming full knowledge of the position and all relevant facts.

Research and development costs – Research and development costs are expensed as incurred. Acquired in-process research and development (“IPR&D”) is capitalized as an indefinite-lived intangible asset and evaluated periodically for impairment. When the project is completed, an expected life is determined and the IPR&D is amortized to expense over the expected life.

Shipping and handling costs – Shipping and handling costs for products shipped to customers, which are included in selling, general and administrative expenses, were $7 million, $6 million and $5 million for the years ended December 31, 2012, 2011 and 2010, respectively.

Concentration of credit risk – Financial instruments, which potentially subject the Company to concentrations of credit risk, include trade accounts receivable. Credit risk is limited by the dispersion of the Company's customers over various geographic areas, operating primarily in electronics manufacturing and distribution. The Company performs on-going credit evaluations of its customers, and generally requires no collateral. Historically, credit losses have not been significant.

The Company currently maintains substantially all of its day-to-day cash balances with major financial institutions. Cash balances are usually in excess of Federal and/or foreign deposit insurance limits.

Valuation of financial instruments – The carrying value of the Company's financial instruments, including cash and cash equivalents, accounts receivable, accounts payable, working capital line of credit, and long-term debt approximate fair value due to their current market conditions, maturity dates and other factors.

Use of estimates – The preparation of financial statements in conformity with GAAP requires that management make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. The level of uncertainty in estimates and assumptions increases with the length of time until the underlying transactions are completed. Actual results may differ from these estimates in amounts that may be material to the consolidated financial statements and accompanying notes.

Earnings per share – Basic earnings per share is calculated by dividing net earnings by the weighted-average number of shares of Common Stock outstanding during the period. Diluted earnings per share is calculated similarly but includes potential dilution from the exercise of stock options and stock awards, except when the effect would be anti-dilutive. Earnings per share are computed using the “treasury stock method.”

For the three years ended December 31, 2012, 2011 and 2010, options and share grants outstanding for 2 million shares, of common stock have been excluded from the computation of diluted earnings per share because their effect was anti-dilutive.

	Year Ended December 31,
	2012		2011		2010

Basic
Weighted average number of common shares outstanding
used in computing basic earnings per share		45,780		45,202		44,146

Net income attributable to common stockholders	$	24,152	$	50,737	$	76,733

Basic earnings per share attributable
to common stockholders	$	0.53	$	1.12	$	1.74

Diluted
Weighted average number of common shares outstanding
used in computing basic earnings per share		45,780		45,202		44,146

Add: Assumed exercise of stock options and stock awards		1,119		1,511		1,400

Weighted average number of common shares outstanding
used in computing diluted earnings per share		46,899		46,713		45,546

Net income attributable to common stockholders	$	24,152	$	50,737	$	76,733
Diluted earnings per share attributable
to common stockholders	$	0.51	$	1.09	$	1.68

Share-based compensation – The Company uses the Black-Scholes-Merton model to determine the fair value of stock options on the date of grant and recognizes compensation expense for stock options on a straight-line basis. Restricted stock grants are measured based on the fair market value of the underlying stock on the date of grant and compensation expense for restricted stock grants is recognized on a straight-line basis over the requisite service period.

The amount of compensation expense recognized using the Black-Scholes-Merton model requires the Company to exercise judgment and make assumptions relating to the factors that determine the fair value of its stock option grants. The fair value calculated by this model is a function of several factors, including the grant price, the expected future volatility, the expected term of the option and the risk-free interest rate of the option. The expected term and expected future volatility of the options require judgment. In addition, the Company is required to estimate the expected forfeiture rate and only recognize expense for those stock options expected to vest. The Company estimates the forfeiture rate based on historical experience, and to the extent its actual forfeiture rate is different from its estimate, share-based compensation expense is adjusted accordingly.

Functional currencies and foreign currency translation – The functional currency for most of the Company's international operations is the U.S. dollar. In some cases, we enter into transactions involving foreign currencies. Some subsidiaries functional currency is their local currency, as the Company believes it is the appropriate currency. The Company believes the New Taiwan (“NT”) dollar is the functional currency for its Taiwan based entities and the British Pound Sterling (“GBP”) is the functional currency for its U.K. based entities, which most appropriately reflects the current economic facts and circumstances of their operations. Assets and liabilities denominated in foreign currencies are translated at the exchange rate on the balance sheet date. Income and expense accounts denominated in foreign currencies are translated at the weighted-average exchange rate during the period presented. Resulting translation adjustments are recorded as a separate component of accumulated other comprehensive income or loss within stockholders' equity in the consolidated balance sheets. Included in other income are foreign exchange losses of $2 million, $1 million and $0 million for the years ended December 31, 2012, 2011 and 2010, respectively.

The Company uses the U.S. dollar as the functional currency for its mainland China and Hong Kong based entities as substantially all monetary transactions are made in U.S. dollars, and other significant economic facts and circumstances currently support that position. As these factors may change in the future, the Company periodically assesses its position with respect to the functional currency of its foreign subsidiaries.

Defined benefit plan – The Company maintains pension plans covering certain of its employees in the U.K. The overfunded or underfunded status of pension and postretirement benefit plans are recognized on the balance sheet. Actuarial gains and losses, prior service costs or credits, are recognized in other comprehensive income, net of tax effects, until they are amortized as a component of net periodic benefit cost. For financial reporting purposes, the net pension and supplemental retirement benefit obligations and the related periodic pension costs are calculated based upon, among other things, assumptions of the discount rate for plan obligations, estimated return on pension plan assets and mortality rates. These obligations and related periodic costs are measured using actuarial techniques and assumptions. The projected unit credit method is the actuarial cost method used to compute the pension liabilities and related expenses.

Investment in joint ventures – Investment in joint ventures over which the Company does not have the ability to exercise significant influence and that, in general, are at least 20 percent owned are stated at cost plus equity in undistributed net income (loss) of the joint venture. These investments are evaluated for impairment, in which an impairment loss would be recorded whenever a decline in the value of an equity investment below its carrying amount is determined to be “other than temporary.” In judging "other than temporary," the Company would consider the length of time and extent to which the fair value of the investment has been less than the carrying amount of the investment, the near-term and longer-term operating and financial prospects of the investee, and the Company's longer-term intent of retaining the investment in the investee.

Noncontrolling interest - Noncontrolling interest (previously referred to as minority interest) primarily relate to the minority investors' share of the earnings of certain China and Taiwan subsidiaries. Noncontrolling interests are a separate component of equity and not as a liability, which increases or decreases in the Company's ownership interest, that leave control intact, be treated as equity transactions, rather than step acquisitions or diluted gain or losses. The noncontrolling interest in the Company's subsidiaries and their equity balances are reported separately in the consolidated financial statements, and activities of these subsidiaries are included therein.

Contingencies – From time to time, the Company may be involved in a variety of legal matters that arise in the normal course of business. Based on information available, the Company evaluates the likelihood of potential outcomes. The Company records the appropriate liability when the amount is deemed probable and reasonably estimable. In addition, the Company does not accrue for estimated legal fees and other directly related costs as they are expensed as incurred.

Comprehensive income (loss) – GAAP generally requires that recognized revenue, expenses, gains and losses be included in net income. Although certain changes in assets and liabilities are reported as separate components of the equity section of the consolidated balance sheet, such items, along with net income, are components of comprehensive income or loss. The components of other comprehensive income or loss include foreign currency translation adjustments, unrealized gain or loss on defined benefit plan, foreign currency gain (loss) on forward contracts and other items. Accumulated other comprehensive loss was $(34) million, $(36) million and $(45) million at December 31, 2012, 2011 and 2010, respectively.

There is no income tax expense or benefit associated with each component of comprehensive income. As of December 31, 2012, the accumulated balance for each component of comprehensive income are as follows:

Reclassifications – Certain amounts from prior periods have been reclassified to conform to the current years' presentation such as certain statement of income line items.

Recently issued accounting pronouncements – In July 2012, the FASB issued ASU No. 2012-02, Intangibles-Goodwill and Other. ASU No. 2012-02 will allow the Company the option to first assess qualitative factors to determine whether the existence of events and circumstances indicates that it is more likely than not that an indefinite-lived intangible asset is impaired. Determining that it is more likely than not that an indefinite-lived intangible asset is impaired will require quantitative impairment testing, otherwise, no further action will be required. This ASU is effective for annual and interim impairment tests performed for fiscal years beginning after September 18, 2012, with early adoption permitted. The adoption is not expected to have an impact on the Company's consolidated financial statements.