Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements	9 Months Ended
Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements	NOTE 1 – Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements Nature of Operations Diodes Incorporated, together with its subsidiaries (collectively, the “Company,” “we” or “our”) (Nasdaq: DIOD), is a leading global manufacturer and supplier of high-quality, application-specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets. We serve the consumer electronics, computing, communications, industrial, and automotive markets. Our products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Our corporate headquarters and Americas’ sales office are located in Plano, Texas and Milpitas, California. Design, marketing, and engineering centers are located in Plano; Milpitas; Taipei, Taoyuan City and Zhubei City, Taiwan; Manchester, England; and Neuhaus, Germany. Our wafer fabrication facilities are located in Manchester and in Shanghai, China. We have assembly and test facilities located in Shanghai, Jinan and Chengdu, China, as well as in Hong Kong, Neuhaus and Taipei. Additional engineering, research and development, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, Yangzhou, China; Seongnam-si, South Korea; and Munich, Germany; and Tokyo, Japan, with support offices throughout the world. Basis of Presentation The condensed consolidated financial data at December 31, 2017 is derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 filed with the Securities and Exchange Commission (“SEC”) on February 20, 2018 (“Form 10-K”). The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q. They do not include all information and footnotes necessary for a fair presentation of financial position, operating results and cash flows in conformity with GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in our Form 10-K. All significant intercompany balances and transactions have been eliminated in consolidation. In the opinion of management, all adjustments (consisting of normal recurring adjustments and accruals) considered necessary for a fair presentation of the operating results for the period presented have been included in the interim period. Operating results for the three and nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2018. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. As permitted under GAAP, interim accounting for certain expenses, including income taxes, are based on full year forecasts. For interim financial reporting purposes, income taxes are recorded based upon estimated annual effective income tax rates taking into consideration discrete items occurring in a quarter. Dollar amounts and share amounts are presented in thousands, except per share amounts, unless otherwise noted. Certain prior year’s balances have been reclassified to conform to the current financial statement presentation. Recently Issued Accounting Pronouncements The Financial Accounting Standards Board (“FASB”) issued the following Accounting Standards Updates (“ASU”) which could have potential impact on the Company’s financial statements: Recently Adopted Standards ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) - On January 1, 2018, we adopted the comprehensive new revenue recognition standard issued by the FASB. This standard is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This standard sets forth a five-step revenue recognition model which replaces the previous revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance. The adoption of this standard did not have a material impact on our condensed consolidated financial position, reported revenue, results of operations or cash flows as of and for the three or nine months ended September 30, 2018. See Note 7 for our expanded revenue disclosures required by the new standard. ASU No. 2016-18, Statement of Cash Flows – Restricted Cash (Topic 230) – In November 2016, the FASB issued guidance on the presentation of restricted cash which requires that on the statement of cash flows, amounts generally described as restricted cash or restricted cash equivalents should be included within the beginning and ending balances of cash and cash equivalents. We adopted this guidance in the first quarter of 2018 on a retrospective basis. As a result, restricted cash amounts that have historically been included in prepaid expenses on our consolidated balance sheets are now included with cash and cash equivalents on the consolidated statements of cash flows. As of September 30, 2018 and December 31, 2017 we had restricted cash of approximately $0.8 million and $1.4 million, respectively. Restricted cash is pledged as collateral when we enter into agreements with banks for certain banking facilities. Standards Effective in Future Years ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”) - In February 2016, the FASB issued ASU 2016-02, which amends the accounting treatment for leases and requires, among other things, lessees to recognize a right-of-use asset and lease liability for most lease arrangements . The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The ASU will become effective for the Company for interim and annual reporting periods in fiscal years beginning after December 15, 2018. The standard offers a number of practical expedients for transition and certain expedients specific to lessees or lessors. Both lessees and lessors are permitted to make an election to apply a package of practical expedients available for implementation under the standard. For transition, the Company will recognize all effects of transition in the beginning of the adoption reporting period on January 1, 2019. We do not expect to elect the use-of-hindsight or land easement practical expedients, the latter not being applicable to us. The Company will continue its implementation work of ASU 2016-02 in 2018, including enhancements to the Company’s internal control framework, accounting systems and related documentation surrounding its lease accounting processes and the preparation of any additional disclosures that will be required. ASU 2018-10, Codification Improvements to Topic 842, Leases (“ASU 2016-02”) - In July 2018 the FASB issued ASU 2018-10, to add clarity to certain areas within ASU 2016-02. The effective date and transition requirements will be the same as ASU 2016-02. The Company will evaluate and adopt this ASU in conjunction with ASU 2016-02. ASU 2018-11, Leases (Topic 842): Targeted Improvements (“ASU 2018-11”) - In July 2018, the FASB issued ASU 2018-11, which now allows entities the option of recognizing the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings in the year of adoption (January 1, 2019) while continuing to present all prior periods under previous lease accounting guidance. The Company will adopt this standard on January 1, 2019. ASU No. 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting ("ASU 2018-07") - In June 2018, the FASB issued ASU 2018-07, which simplifies several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, Compensation—Stock Compensation, to include share-based payment transactions for acquiring goods and services from nonemployees. ASU 2018-07 is effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. We are currently assessing the effect this guidance may have on our consolidated financial statements and disclosures. ASU 2018-13, Changes to Disclosure Requirements for Fair Value Measurements (“ASU 2018-13”) - In August 2018, the FASB issued ASU 2018-13 which is part of the disclosure framework project and eliminates certain disclosure requirements for fair value measurements, requires entities to disclose new information, and modifies existing disclosure requirements. The new guidance is effective after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact this change will have on its consolidated financial statements and disclosures. ASU 2018-14, Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ("ASU No. 2018-14"). In August 2018, the FASB issued ASU No. 2018-14, which is part of the FASB's broader disclosure framework project, and modifies and supplements the current U.S. GAAP annual disclosure requirements for employers that sponsor defined benefit pension plans. ASU No. 2018-14 is effective for the year ending December 31, 2020, with early adoption permitted. ASU No. 2018-14 must be adopted on a retroactive basis and applied to each comparative period presented in an entity's financial statements. We are evaluating the potential impact of adopting ASU No. 2018-14; however, we do not currently expect it to have a material impact on our consolidated financial statements and disclosures.

NOTE 1 – Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements

Nature of Operations

Diodes Incorporated, together with its subsidiaries (collectively, the “Company,” “we” or “our”) (Nasdaq: DIOD), is a leading global manufacturer and supplier of high-quality, application-specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets. We serve the consumer electronics, computing, communications, industrial, and automotive markets. Our products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. Our corporate headquarters and Americas’ sales office are located in Plano, Texas and Milpitas, California. Design, marketing, and engineering centers are located in Plano; Milpitas; Taipei, Taoyuan City and Zhubei City, Taiwan; Manchester, England; and Neuhaus, Germany. Our wafer fabrication facilities are located in Manchester and in Shanghai, China. We have assembly and test facilities located in Shanghai, Jinan and Chengdu, China, as well as in Hong Kong, Neuhaus and Taipei. Additional engineering, research and development, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, Yangzhou, China; Seongnam-si, South Korea; and Munich, Germany; and Tokyo, Japan, with support offices throughout the world.

Basis of Presentation

The condensed consolidated financial data at December 31, 2017 is derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2017 filed with the Securities and Exchange Commission (“SEC”) on February 20, 2018 (“Form 10-K”). The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q. They do not include all information and footnotes necessary for a fair presentation of financial position, operating results and cash flows in conformity with GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in our Form 10-K. All significant intercompany balances and transactions have been eliminated in consolidation. In the opinion of management, all adjustments (consisting of normal recurring adjustments and accruals) considered necessary for a fair presentation of the operating results for the period presented have been included in the interim period. Operating results for the three and nine months ended September 30, 2018 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2018.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. As permitted under GAAP, interim accounting for certain expenses, including income taxes, are based on full year forecasts. For interim financial reporting purposes, income taxes are recorded based upon estimated annual effective income tax rates taking into consideration discrete items occurring in a quarter.

Dollar amounts and share amounts are presented in thousands, except per share amounts, unless otherwise noted. Certain prior year’s balances have been reclassified to conform to the current financial statement presentation.

Recently Issued Accounting Pronouncements

The Financial Accounting Standards Board (“FASB”) issued the following Accounting Standards Updates (“ASU”) which could have potential impact on the Company’s financial statements:

Recently Adopted Standards

ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) - On January 1, 2018, we adopted the comprehensive new revenue recognition standard issued by the FASB. This standard is based on the principle that revenue is recognized to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This standard sets forth a five-step revenue recognition model which replaces the previous revenue recognition guidance in its entirety and is intended to eliminate numerous industry-specific pieces of revenue recognition guidance. The adoption of this standard did not have a material impact on our condensed consolidated financial position, reported revenue, results of operations or cash flows as of and for the three or nine months ended September 30, 2018. See Note 7 for our expanded revenue disclosures required by the new standard.

ASU No. 2016-18, Statement of Cash Flows – Restricted Cash (Topic 230) – In November 2016, the FASB issued guidance on the presentation of restricted cash which requires that on the statement of cash flows, amounts generally described as restricted cash or restricted cash equivalents should be included within the beginning and ending balances of cash and cash equivalents. We adopted this guidance in the first quarter of 2018 on a retrospective basis. As a result, restricted cash amounts that have historically been included in prepaid expenses on our consolidated balance sheets are now included with cash and cash equivalents on the consolidated statements of cash flows. As of September 30, 2018 and December 31, 2017 we had restricted cash of approximately $0.8 million and $1.4 million, respectively. Restricted cash is pledged as collateral when we enter into agreements with banks for certain banking facilities.

Standards Effective in Future Years

ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”) - In February 2016, the FASB issued ASU 2016-02, which amends the accounting treatment for leases and requires, among other things, lessees to recognize a right-of-use asset and lease liability for most lease arrangements . The amendments are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The ASU will become effective for the Company for interim and annual reporting periods in fiscal years beginning after December 15, 2018. The standard offers a number of practical expedients for transition and certain expedients specific to lessees or lessors. Both lessees and lessors are permitted to make an election to apply a package of practical expedients available for implementation under the standard. For transition, the Company will recognize all effects of transition in the beginning of the adoption reporting period on January 1, 2019. We do not expect to elect the use-of-hindsight or land easement practical expedients, the latter not being applicable to us.

The Company will continue its implementation work of ASU 2016-02 in 2018, including enhancements to the Company’s internal control framework, accounting systems and related documentation surrounding its lease accounting processes and the preparation of any additional disclosures that will be required.

ASU 2018-10, Codification Improvements to Topic 842, Leases (“ASU 2016-02”) - In July 2018 the FASB issued ASU 2018-10, to add clarity to certain areas within ASU 2016-02. The effective date and transition requirements will be the same as ASU 2016-02. The Company will evaluate and adopt this ASU in conjunction with ASU 2016-02.

ASU 2018-11, Leases (Topic 842): Targeted Improvements (“ASU 2018-11”) - In July 2018, the FASB issued ASU 2018-11, which now allows entities the option of recognizing the cumulative effect of applying the new standard as an adjustment to the opening balance of retained earnings in the year of adoption (January 1, 2019) while continuing to present all prior periods under previous lease accounting guidance. The Company will adopt this standard on January 1, 2019.

ASU No. 2018-07, Compensation—Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting ("ASU 2018-07") - In June 2018, the FASB issued ASU 2018-07, which simplifies several aspects of the accounting for nonemployee share-based payment transactions resulting from expanding the scope of Topic 718, Compensation—Stock Compensation, to include share-based payment transactions for acquiring goods and services from nonemployees. ASU 2018-07 is effective for public business entities for fiscal years beginning after December 15, 2018, including interim periods within that fiscal year. We are currently assessing the effect this guidance may have on our consolidated financial statements and disclosures.

ASU 2018-13, Changes to Disclosure Requirements for Fair Value Measurements (“ASU 2018-13”) - In August 2018, the FASB issued ASU 2018-13 which is part of the disclosure framework project and eliminates certain disclosure requirements for fair value measurements, requires entities to disclose new information, and modifies existing disclosure requirements. The new guidance is effective after December 15, 2019. Early adoption is permitted. The Company is currently evaluating the impact this change will have on its consolidated financial statements and disclosures.

ASU 2018-14, Disclosure Framework—Changes to the Disclosure Requirements for Defined Benefit Plans ("ASU No. 2018-14"). In August 2018, the FASB issued ASU No. 2018-14, which is part of the FASB's broader disclosure framework project, and modifies and supplements the current U.S. GAAP annual disclosure requirements for employers that sponsor defined benefit pension plans. ASU No. 2018-14 is effective for the year ending December 31, 2020, with early adoption permitted. ASU No. 2018-14 must be adopted on a retroactive basis and applied to each comparative period presented in an entity's financial statements. We are evaluating the potential impact of adopting ASU No. 2018-14; however, we do not currently expect it to have a material impact on our consolidated financial statements and disclosures.