Diodes (DIOD) 10-Q 9 May 17 2017 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2017	May 04, 2017
Document And Entity Information [Abstract]
Document type	10-Q
Document period end date	Mar. 31, 2017
Amendment flag	false
Entity registrant name	DIODES INC /DEL/
Entity central index key	29,002
Current fiscal year end date	--12-31
Entity filer category	Large Accelerated Filer
Entity common stock shares outstanding		48,373,357
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q1
Trading Symbol	DIOD

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 265,119	$ 247,802
Short-term investments	32,524	29,842
Accounts receivable, net of allowances of $2,096 and $2,141 at March 31, 2017 and December 31, 2016, respectively	204,972	217,217
Inventories	191,301	193,483
Prepaid expenses and other	45,333	44,438
Total current assets	739,249	732,782
Property, plant and equipment, net	405,247	401,988
Deferred income tax	61,559	56,047
Goodwill	131,059	129,412
Intangible assets, net	170,180	174,876
Other	33,711	33,447
Total assets	1,541,005	1,528,552
Current liabilities:
Accounts payable	90,780	87,600
Accrued liabilities	74,866	71,562
Income tax payable	6,282	11,855
Current portion of long-term debt	15,938	14,356
Total current liabilities	187,866	185,373
Long-term debt, net of current portion	400,493	413,126
Deferred tax liabilities	28,225	28,213
Other long-term liabilities	80,242	81,373
Total liabilities	696,826	708,085
Commitments and contingencies (See Note 8)
Stockholders' equity
Preferred stock - par value $1.00 per share; 1,000,000 shares authorized; no shares issued or outstanding
Common stock - par value $0.66 2/3 per share; 70,000,000 shares authorized; 48,348,953 and 48,219,376, issued and outstanding at March 31, 2017 and December 31, 2016, respectively	33,006	32,919
Additional paid-in capital	361,390	354,574
Retained earnings	535,708	530,215
Treasury stock, at cost, 1,157,206 shares held at March 31, 2017 and December 31, 2016	(29,023)	(29,023)
Accumulated other comprehensive loss	(101,841)	(112,666)
Total stockholders' equity	799,240	776,019
Noncontrolling interest	44,939	44,448
Total equity	844,179	820,467
Total liabilities and stockholders' equity	$ 1,541,005	$ 1,528,552

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Statement Of Financial Position [Abstract]
Accounts receivable, allowance	$ 2,096	$ 2,141
Preferred stock par value	$ 1	$ 1
Preferred stock shares authorized	1,000,000	1,000,000
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0
Common stock par value	$ 0.666	$ 0.666
Common stock shares authorized	70,000,000	70,000,000
Common stock shares issued	48,348,953	48,219,376
Common stock shares outstanding	48,348,953	48,219,376
Treasury stock, shares	1,157,206	1,157,206

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales	$ 236,303	$ 222,738
Cost of goods sold	162,392	158,518
Gross profit	73,911	64,220
Operating expenses
Selling, general and administrative	39,690	39,454
Research and development	18,040	18,149
Amortization of acquisition related intangible assets	4,758	5,131
Restructuring expense	2,231
Other operating (income) expenses	(165)	31
Total operating expenses	64,554	62,765
Income from operations	9,357	1,455
Other income (expense)
Interest income	295	456
Interest expense	(3,485)	(2,512)
Currency, net	(3,794)	(1,279)
Other expense	(271)	(157)
Total other income (expense)	(7,255)	(3,492)
Income before income taxes and noncontrolling interest	2,102	(2,037)
Income tax provision (benefit)	560	(552)
Net income (loss)	1,542	(1,485)
Less net income attributable to noncontrolling interest	(325)	(248)
Net income (loss) attributable to common stockholders	$ 1,217	$ (1,733)
Earnings (loss) per share attributable to common stockholders:
Basic	$ 0.03	$ (0.04)
Diluted	$ 0.02	$ (0.04)
Number of shares used in earnings per share computation:
Basic	48,316	48,288
Diluted	49,663	48,288

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest [Abstract]
Net income (loss)	$ 1,542	$ (1,485)
Unrealized gain (loss) on defined benefit plan, net of tax	856	(74)
Unrealized gain on interest rate swap, net of tax	527
Unrealized foreign currency gain, net of tax	9,442	2,878
Comprehensive income	12,367	1,319
Less: Comprehensive income attributable to noncontrolling interest	(325)	(248)
Total comprehensive income attributable to common stockholders	$ 12,042	$ 1,071

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities
Cash flows from operating activities	$ 45,626	$ 25,453
Cash flows from investing activities
Decrease in restricted cash	854	3
Purchases of property, plant and equipment	(19,106)	(13,561)
Proceeds from sales of property, plant, and equipment	211	19
Purchases of short-term investments	(6,787)	(7,330)
Proceeds from maturity of short-term investments	4,588	29,289
Other	(155)	291
Net cash and cash equivalents (used in) provided by investing activities	(20,395)	8,711
Cash flows from financing activities
Taxes paid related to net share settlement		(2,335)
Debt issuance costs	(67)	(22)
Proceeds from long-term debt	7,500	1,500
Repayments of long-term debt	(18,701)	(15,569)
Net proceeds from issuance of common stock	2,166	5
Repayment of capital lease obligation and other	(1,238)	(843)
Net cash and cash equivalents used in financing activities	(10,340)	(17,264)
Effect of exchange rate changes on cash and cash equivalents	2,426	1,671
Increase in cash and cash equivalents	17,317	18,571
Cash and cash equivalents, beginning of period	247,802	218,435
Cash and cash equivalents, end of period	265,119	237,006
Non-cash financing activities:
Change in Accounts Payable related to the purchase of Property, plant and equipment	$ (7)	$ 697

Nature of Operations, Basis of

Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements	3 Months Ended
	Mar. 31, 2017
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 Lee’s Summit, Missouri and Manchester, with an additional facility located in Shanghai, China. We have assembly and test facilities located in Shanghai, Jinan, Chengdu, and Yangzhou, China, as well as in Hong Kong, Neuhaus and Taipei. Additional engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China; Seongnam-si, South Korea; and Munich, Germany, with support offices throughout the world. Basis of Presentation The condensed consolidated financial data at December 31, 2016 is derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 filed with the Securities and Exchange Commission (“SEC”) on February 27, 2017 (“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 months ended March 31, 2017 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2017. 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: ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). •ASU 2016-08 (Issued March 2016) — Principal versus Agent Consideration (Reporting Revenue Gross versus Net) •ASU 2016-10 (Issued April 2016) — Identifying Performance Obligations and Licensing •ASU 2016-12 (Issued May 2016) — Narrow-Scope Improvements and Practical Expedients •ASU 2016-20 (Issued December 2016) — Technical Corrections and Improvements to Topic 606, Revenue This standard is effective in the first quarter of 2018 for public companies and requires either a full retrospective or a modified retrospective approach to adoption. We will adopt this standard using the modified retrospective method. We have established a cross-functional coordinated implementation team to implement ASU 2014-09. We are in the process of identifying and implementing changes to our systems, processes and internal controls to meet the reporting and disclosure requirements. We have engaged outside expertise to assist us in determining the effect this standard will have on our financial statements, to assist us in making necessary changes in our accounting practices and to assist us in making certain we are capturing the necessary detail to fulfill the disclosure requirements promulgated in this standard. Upon initial evaluation, we believe that the key revenue streams will be based on method of distribution. The key revenue streams identified are distribution and OEM sales which comprise the majority of our business. Based upon evaluation completed to-date, the Company believes that the pattern of revenue recognition for these revenue streams will be at a point-in-time consistent with current guidance. The Company has identified a number of variable consideration components within our contracts with customers. The Company is evaluating the impact to the current estimation processes related to the calculation of the consideration to which the entity is entitled and the related internal controls. The Company is still in the process of evaluating the remaining impacts of the standard and its effect on the Company’s financial statements and related disclosures. ASU No. 2015-11, Simplifying the Measurement of Inventory (“ASU 2015-11”). ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”) - ASU No. 2016-09, Compensation—Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Earnings Per Share	NOTE 2 – Earnings per Share Earnings per share (“EPS”) are calculated by dividing net income attributable to common stockholders by the weighted-average number of shares of Common Stock outstanding during the period. Diluted EPS are calculated similarly but includes potential dilution from the exercise of stock options and stock awards, except when the effect would be anti-dilutive. A total of 0.8 million and 2.6 million stock options and stock awards outstanding during the three months ended March 31, 2017 and 2016, respectively, The table below sets forth the reconciliation between net income (loss) and the weighted average shares outstanding used for calculating basic and diluted EPS for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Earnings (numerator) Net income (loss) attributable to common stockholders $ 1,217 $ (1,733 ) Shares (denominator) Weighted average common shares outstanding (basic) 48,316 48,288 Dilutive effect of stock options and stock awards outstanding 1,347 - Adjusted weighted average common shares outstanding (diluted) 49,663 48,288 Earnings (loss) per share attributable to common stockholders Basic $ 0.03 $ (0.04 ) Diluted $ 0.02 $ (0.04 )

Inventories

Inventories	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Inventories	NOTE 3 – Inventories The table below sets forth inventories which are stated at the lower of cost or market value: March 31, 2017 December 31, 2016 Finished goods $ 52,659 $ 66,930 Work-in-progress 51,261 45,408 Raw materials 87,381 81,145 Total $ 191,301 $ 193,483

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	NOTE 4 – Goodwill and Intangible Assets The table below sets forth the changes in goodwill : Balance at December 31, 2016 $ 129,412 Foreign currency translation adjustment 1,647 Balance at March 31, 2017 $ 131,059 The table below sets forth the value of intangible assets, other than goodwill: March 31, December 31, 2017 2016 Intangible assets subject to amortization: Gross carrying amount $ 232,747 $ 232,747 Accumulated amortization (74,006 ) (69,247 ) Foreign currency translation adjustment (8,403 ) (8,442 ) Total 150,338 155,058 Intangible assets with indefinite lives: Gross carrying amount 21,003 21,003 Foreign currency translation adjustment (1,161 ) (1,185 ) Total 19,842 19,818 Total intangible assets, net $ 170,180 $ 174,876 The table below sets forth amortization expense related to intangible assets subject to amortization for the three months ended March 31, 2017 and 2016: Amortization expense 2017 2016 Three Months Ended March 31, $ 4,758 $ 5,131

Income Tax Provision

Income Tax Provision	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Tax Provision	NOTE 5 – Income Tax Provision The table below sets forth information related to our income tax expense: Three Months Ended March 31, 2017 2016 Domestic pre-tax income (loss) $ (13,211 ) $ (10,000 ) Foreign pre-tax income $ 15,313 $ 7,700 Income tax provision (benefit) $ 560 $ (552 ) Effective tax rate 26.6 % 27.1 % Impact of tax holidays on tax expense $ (963 ) $ (824 ) Earnings per share impact of tax holidays Basic $ 0.02 $ 0.02 Diluted $ 0.02 $ 0.02 The decrease in the effective tax rate over these comparable three month periods is primarily attributable to a significant change in the proportion of income generated in North America, Europe and Asia, and in both periods the effective tax rates were lower than the U.S. statutory rate of 35%, principally from the impact of income from lower-taxed jurisdictions. Funds repatriated from foreign subsidiaries to the U.S. may be subject to federal and state income taxes. The Company intends to permanently reinvest overseas all of its earnings from its foreign subsidiaries, except to the extent such undistributed earnings have previously been subject to US tax; accordingly, deferred U.S. taxes are not recorded on undistributed foreign earnings. The Company files income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions. The Company is no longer subject to U.S. federal income tax examinations by tax authorities for tax years before 2007, or for the 2010 tax year. The Company is no longer subject to China income tax examinations by tax authorities for tax years before 2005. With respect to state and local jurisdictions and countries outside of the U.S. (other than China), with limited exceptions, the Company is no longer subject to income tax audits for years before 2006. Although the outcome of tax audits is always uncertain, the Company believes that adequate amounts of tax, interest and penalties, if any, have been provided for in the Company’s reserve for any adjustments that may result from tax audits. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in interest expense. As of March 31, 2017, the gross amount of unrecognized tax benefits was approximately $29.7 million. It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions will significantly increase or decrease within the next 12 months. At this time, an estimate of the range of the reasonably possible outcomes cannot be made.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2017
Share Based Compensation [Abstract]
Share-Based Compensation	NOTE 6 – Share-Based Compensation The table below sets forth the line items where share-based compensation expense was recorded for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Cost of goods sold $ 158 $ 201 Selling, general and administrative 3,304 3,704 Research and development 669 614 Total share-based compensation expense $ 4,131 $ 4,519 The table below sets forth share-based compensation expense by type for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Stock options $ 298 $ 488 Share grants 3,833 4,031 Total share-based compensation expense $ 4,131 $ 4,519 Stock Options. There was approximately $2.2 million in cash proceeds received from stock option exercises during the three months ended March 31, 2017. As of March 31, 2017, total unrecognized share-based compensation expense related to unvested stock options was approximately $0.9 million, before income taxes, and is expected to be recognized over a weighted average period of less than 1 year. Share Grants. Restricted stock awards and restricted stock units generally vest in equal annual installments over a four-year period. We also have share grants that are performance based that vest upon achievement of certain performance criteria. During the first quarter of 2017, the Company modified a previous performance-based award previously granted to our Chief Executive Officer. The effect was to replace a performance-based grant covering 700,000 shares of the Company’s common stock with a performance-based grant covering 62,905 shares of the Company’s common stock and a restricted stock grant covering 62,905 of the Company’s common stock. If certain performance criteria are met, Dr. Lu will receive 200% of the award or 125,810 shares. The incremental expense if Dr. Lu received 200% of the PSU award is approximately $3.3 million. The incremental expense of the restricted stock grant is approximately $1.7 million. As of March 31, 2017, total unrecognized share-based compensation expense related to share grants was approximately $35.9 million, before income taxes, and is expected to be recognized over a weighted average period of approximately 2.4 years.

Segment Information and Enterpr

Segment Information and Enterprise-Wide Disclosure	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment Information and Enterprise-Wide Disclosure	NOTE 7 – Segment Information and Enterprise-Wide Disclosure For financial reporting purposes, we operate in a single segment, standard semiconductor products, through our various manufacturing and distribution facilities. We aggregate our products because the products are similar and have similar economic characteristics, use similar production processes and share the same customer type. Our primary operations include operations in Asia, North America and Europe. The tables below set forth net sales based on the location of the subsidiary producing the net sale. Three Months Ended March 31, 2017 Asia North America Europe Consolidated Total sales $ 218,343 $ 42,879 $ 41,018 $ 302,240 Intercompany elimination (33,339 ) (17,540 ) (15,058 ) (65,937 ) Net sales $ 185,004 $ 25,339 $ 25,960 $ 236,303 Three Months Ended March 31, 2016 Asia North America Europe Consolidated Total sales $ 209,750 $ 31,858 $ 40,279 $ 281,887 Intercompany elimination (32,850 ) (11,034 ) (15,265 ) (59,149 ) Net sales $ 176,900 $ 20,824 $ 25,014 $ 222,738 Geographic Information The tables below set forth the amount of net sales that were derived from (shipped to) customers located in the following countries: Net Sales for the Three Months Ended Percentage of March 31, Net Sales 2017 2016 2017 2016 China $ 129,525 $ 128,882 55 % 58 % United States 21,199 19,106 9 % 9 % Korea 17,559 13,801 7 % 6 % Germany 17,423 14,906 7 % 7 % Singapore 11,491 12,079 5 % 5 % Taiwan 15,499 13,886 7 % 6 % All others (1) 23,607 20,078 10 % 9 % Total $ 236,303 $ 222,738 100 % 100 % (1) Represents countries with less than 3% of the total net sales each.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 8 – Commitments and Contingencies Purchase commitments – As of March 31, 2017, we had approximately $33.7 million in non-cancelable purchase contracts related to capital expenditures, primarily related to Asia manufacturing facilities. Defined Benefit Plan - We have a contributory defined benefit plan that covers certain employees in the United Kingdom. As of March 31, 2017, the unfunded liability for this defined benefit plan was approximately $27.2 million. We are obligated to make annual contributions, each year through December 2029, of approximately GPB 2 million (approximately $2.6 million based on a GBP:USD exchange rate of 1.3). The trustees are required to review the funding position every three years and the most recent review was carried out as of April 5, 2016. The outcome of a review can change the amount of the payment. Contingencies – From time to time, we are involved in various legal proceedings that arise in the normal course of business. While we intend to defend any lawsuit vigorously, we presently believe that the ultimate outcome of any current pending legal proceeding will not have any material adverse effect on our financial position, cash flows or operating results. However, litigation is subject to inherent uncertainties, and unfavorable rulings could occur. An unfavorable ruling could include monetary damages, which could impact on our business and operating results for the period in which the ruling occurs or future periods. Based on information available, we evaluate the likelihood of potential outcomes. We record the appropriate liability when the amount is deemed probable and reasonably estimable. In addition, we do not accrue for estimated legal fees and other directly related costs as they are expensed as incurred. The Company is not currently a party to any pending litigation that the Company considers material.

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2017
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	NOTE 9 – Employee Benefit Plans Deferred Compensation We maintain a Non-Qualified Deferred Compensation Plan (the “Deferred Compensation Plan”) for executive officers, key employees and members of the Board of Directors. The Deferred Compensation Plan allows eligible participants to defer the receipt of eligible compensation, including equity awards, until designated future dates. We offset our obligations under the Deferred Compensation Plan by investing in the actual underlying investments. These investments are classified as trading securities and are carried at fair value. At March 31, 2017, these investments totaled approximately $6.6 million. All gains and losses in these investments are materially offset by corresponding gains and losses in the Deferred Compensation Plan liabilities.

Related Parties

Related Parties	3 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
Related Parties	NOTE 10 – We conduct business with a related party company, Lite-On Semiconductor Corporation and its subsidiaries and affiliates (collectively, “LSC”), and Nuvoton Technology Corporation and its subsidiaries and affiliates (collectively, “Nuvoton”). LSC is our largest stockholder, owning approximately 16 .7 % of o ur ou t s t a nd i n g C o m m on S toc k as of March 31, 2 017 , a n d i s a m e m ber of t he L ite- On G r o u p o f c o m p a n ies . We also conduct business with Keylink International (B.V.I.) Inc. and its subsidiaries and affiliates (collectively, “Keylink”). Keylink is our 5% joint venture partner in our Shanghai assembly and test facilities. We sell products to, and purchase inventory from Keylink. In addition, our subsidiaries in China lease their manufacturing facilities in Shanghai from, and subcontract a portion of our manufacturing process (metal plating and environmental services) to, Keylink. We also pay a consulting fee to Keylink. The aggregate amounts paid to Keylink for the three months ended March 31, 2017 and 2016 were approximately $3.4 million and $4.1 million, respectively. I n a dd itio n, Y a G u a ng”) is our 2% joint venture partner in one of our Chengdu assembly and test facilities and i s o ur 5% j o i nt v e n t ure p a r t n e r i n ou r other C h eng du asse m bly a nd tes t facilities ; h owe v er, we have no material transactions with Ya Guang. The C t a e e i i a a c t m The table below sets forth sales to, and purchases from, LSC, Nuvoton and Keylink: Three Months Ended March 31, 2017 2016 LSC Net sales $ 231 $ 120 Purchases $ 6,019 $ 5,210 Nuvoton Purchases $ 2,909 $ 2,947 Keylink Net sales $ 1,822 $ 1,911 Purchases $ 1,078 $ 1,260 The table below sets forth accounts receivable from, and accounts payable to, LSC, Nuvoton and Keylink: March 31, December 31, 2017 2016 LSC Accounts receivable $ 239 $ 301 Accounts payable $ 4,267 $ 4,333 Keylink Accounts receivable $ 4,762 $ 5,394 Accounts payable $ 4,280 $ 4,295 Nuvoton Accounts payable $ 1,319 $ 950

Restructuring Costs

Restructuring Costs	3 Months Ended
	Mar. 31, 2017
Restructuring And Related Activities [Abstract]
Restructuring Costs	NOTE 11 – Restructuring Costs In February 2017, the Company announced its plan to transfer its wafer fabrication operation in Lee’s Summit, MO, (“KFAB”) Total KFAB shutdown costs are expected to be approximately $10 million to $12 million, on a pretax basis, which will be expensed and paid throughout 2017. The table below sets forth the costs recorded in accrued liabilities during the three months ended March 31, 2017, related to the KFAB shutdown: Early supply contract termination $ 2,231 Retention costs: Cost of goods sold 490 Selling, general and administrative 91 Research and development 15 Total $ 2,827

Nature of Operations, Basis o18

Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements (Policies)	3 Months Ended
	Mar. 31, 2017
Accounting Policies [Abstract]
Nature of Operations	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 Lee’s Summit, Missouri and Manchester, with an additional facility located in Shanghai, China. We have assembly and test facilities located in Shanghai, Jinan, Chengdu, and Yangzhou, China, as well as in Hong Kong, Neuhaus and Taipei. Additional engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China; Seongnam-si, South Korea; and Munich, Germany, with support offices throughout the world.
Basis of Presentation	Basis of Presentation The condensed consolidated financial data at December 31, 2016 is derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 filed with the Securities and Exchange Commission (“SEC”) on February 27, 2017 (“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 months ended March 31, 2017 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2017. 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	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: ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606). •ASU 2016-08 (Issued March 2016) — Principal versus Agent Consideration (Reporting Revenue Gross versus Net) •ASU 2016-10 (Issued April 2016) — Identifying Performance Obligations and Licensing •ASU 2016-12 (Issued May 2016) — Narrow-Scope Improvements and Practical Expedients •ASU 2016-20 (Issued December 2016) — Technical Corrections and Improvements to Topic 606, Revenue This standard is effective in the first quarter of 2018 for public companies and requires either a full retrospective or a modified retrospective approach to adoption. We will adopt this standard using the modified retrospective method. We have established a cross-functional coordinated implementation team to implement ASU 2014-09. We are in the process of identifying and implementing changes to our systems, processes and internal controls to meet the reporting and disclosure requirements. We have engaged outside expertise to assist us in determining the effect this standard will have on our financial statements, to assist us in making necessary changes in our accounting practices and to assist us in making certain we are capturing the necessary detail to fulfill the disclosure requirements promulgated in this standard. Upon initial evaluation, we believe that the key revenue streams will be based on method of distribution. The key revenue streams identified are distribution and OEM sales which comprise the majority of our business. Based upon evaluation completed to-date, the Company believes that the pattern of revenue recognition for these revenue streams will be at a point-in-time consistent with current guidance. The Company has identified a number of variable consideration components within our contracts with customers. The Company is evaluating the impact to the current estimation processes related to the calculation of the consideration to which the entity is entitled and the related internal controls. The Company is still in the process of evaluating the remaining impacts of the standard and its effect on the Company’s financial statements and related disclosures. ASU No. 2015-11, Simplifying the Measurement of Inventory (“ASU 2015-11”). ASU No. 2016-02, Leases (Topic 842) (“ASU 2016-02”) - ASU No. 2016-09, Compensation—Stock Compensation (Topic 718) Improvements to Employee Share-Based Payment Accounting

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The table below sets forth the reconciliation between net income (loss) and the weighted average shares outstanding used for calculating basic and diluted EPS for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Earnings (numerator) Net income (loss) attributable to common stockholders $ 1,217 $ (1,733 ) Shares (denominator) Weighted average common shares outstanding (basic) 48,316 48,288 Dilutive effect of stock options and stock awards outstanding 1,347 - Adjusted weighted average common shares outstanding (diluted) 49,663 48,288 Earnings (loss) per share attributable to common stockholders Basic $ 0.03 $ (0.04 ) Diluted $ 0.02 $ (0.04 )

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2017
Inventory Disclosure [Abstract]
Schedule of Inventory Current	The table below sets forth inventories which are stated at the lower of cost or market value: March 31, 2017 December 31, 2016 Finished goods $ 52,659 $ 66,930 Work-in-progress 51,261 45,408 Raw materials 87,381 81,145 Total $ 191,301 $ 193,483

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2017
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Changes in Goodwill	The table below sets forth the changes in goodwill : Balance at December 31, 2016 $ 129,412 Foreign currency translation adjustment 1,647 Balance at March 31, 2017 $ 131,059
Schedule of Intangible Assets Other Than Goodwill	The table below sets forth the value of intangible assets, other than goodwill: March 31, December 31, 2017 2016 Intangible assets subject to amortization: Gross carrying amount $ 232,747 $ 232,747 Accumulated amortization (74,006 ) (69,247 ) Foreign currency translation adjustment (8,403 ) (8,442 ) Total 150,338 155,058 Intangible assets with indefinite lives: Gross carrying amount 21,003 21,003 Foreign currency translation adjustment (1,161 ) (1,185 ) Total 19,842 19,818 Total intangible assets, net $ 170,180 $ 174,876
Schedule of Amortization Expense Related to Intangible Assets	The table below sets forth amortization expense related to intangible assets subject to amortization for the three months ended March 31, 2017 and 2016: Amortization expense 2017 2016 Three Months Ended March 31, $ 4,758 $ 5,131

Income Tax Provision (Tables)

Income Tax Provision (Tables)	3 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Schedule of Information Related to Income Tax Expense	The table below sets forth information related to our income tax expense: Three Months Ended March 31, 2017 2016 Domestic pre-tax income (loss) $ (13,211 ) $ (10,000 ) Foreign pre-tax income $ 15,313 $ 7,700 Income tax provision (benefit) $ 560 $ (552 ) Effective tax rate 26.6 % 27.1 % Impact of tax holidays on tax expense $ (963 ) $ (824 ) Earnings per share impact of tax holidays Basic $ 0.02 $ 0.02 Diluted $ 0.02 $ 0.02

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2017
Share Based Compensation [Abstract]
Schedule of Share-Based Compensation Expense	The table below sets forth the line items where share-based compensation expense was recorded for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Cost of goods sold $ 158 $ 201 Selling, general and administrative 3,304 3,704 Research and development 669 614 Total share-based compensation expense $ 4,131 $ 4,519
Schedule of Share-Based Compensation Expense by Type	The table below sets forth share-based compensation expense by type for the three months ended March 31, 2017 and 2016: Three Months Ended March 31, 2017 2016 Stock options $ 298 $ 488 Share grants 3,833 4,031 Total share-based compensation expense $ 4,131 $ 4,519

Segment Information and Enter24

Segment Information and Enterprise-Wide Disclosure (Tables)	3 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Schedule of Net Sales from External Customers and Long Lived Assets by Geographical Areas	The tables below set forth net sales based on the location of the subsidiary producing the net sale. Three Months Ended March 31, 2017 Asia North America Europe Consolidated Total sales $ 218,343 $ 42,879 $ 41,018 $ 302,240 Intercompany elimination (33,339 ) (17,540 ) (15,058 ) (65,937 ) Net sales $ 185,004 $ 25,339 $ 25,960 $ 236,303 Three Months Ended March 31, 2016 Asia North America Europe Consolidated Total sales $ 209,750 $ 31,858 $ 40,279 $ 281,887 Intercompany elimination (32,850 ) (11,034 ) (15,265 ) (59,149 ) Net sales $ 176,900 $ 20,824 $ 25,014 $ 222,738
Schedule of Net Sales by Countries	The tables below set forth the amount of net sales that were derived from (shipped to) customers located in the following countries: Net Sales for the Three Months Ended Percentage of March 31, Net Sales 2017 2016 2017 2016 China $ 129,525 $ 128,882 55 % 58 % United States 21,199 19,106 9 % 9 % Korea 17,559 13,801 7 % 6 % Germany 17,423 14,906 7 % 7 % Singapore 11,491 12,079 5 % 5 % Taiwan 15,499 13,886 7 % 6 % All others (1) 23,607 20,078 10 % 9 % Total $ 236,303 $ 222,738 100 % 100 % (1) Represents countries with less than 3% of the total net sales each.

Related Parties (Tables)

Related Parties (Tables)	3 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
Schedule of Sales and Purchases of Related Party Transactions	The table below sets forth sales to, and purchases from, LSC, Nuvoton and Keylink: Three Months Ended March 31, 2017 2016 LSC Net sales $ 231 $ 120 Purchases $ 6,019 $ 5,210 Nuvoton Purchases $ 2,909 $ 2,947 Keylink Net sales $ 1,822 $ 1,911 Purchases $ 1,078 $ 1,260
Schedule of Account Receivable and Payable of Related Party Transactions	The table below sets forth accounts receivable from, and accounts payable to, LSC, Nuvoton and Keylink: March 31, December 31, 2017 2016 LSC Accounts receivable $ 239 $ 301 Accounts payable $ 4,267 $ 4,333 Keylink Accounts receivable $ 4,762 $ 5,394 Accounts payable $ 4,280 $ 4,295 Nuvoton Accounts payable $ 1,319 $ 950

Restructuring Costs (Tables)

Restructuring Costs (Tables)	3 Months Ended
	Mar. 31, 2017
Restructuring And Related Activities [Abstract]
Schedule of Costs Recorded in Accrued Liabilities	The table below sets forth the costs recorded in accrued liabilities during the three months ended March 31, 2017, related to the KFAB shutdown: Early supply contract termination $ 2,231 Retention costs: Cost of goods sold 490 Selling, general and administrative 91 Research and development 15 Total $ 2,827

Nature of Operations, Basis o27

Nature of Operations, Basis of Presentation and Recently Issued Accounting Pronouncements - Additional Information (Details) - ASU No. 2016-09 $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)
Adoption Related to Income Tax Portion [Member]
Nature of Operations Basis of Presentation and Recently Issued Accounting Pronouncements [Line Items]
Increase (decrease) in retained earnings due to effect on adoption	$ 4.8
Increase in deferred income tax assets due to effect on adoption	4.8
Adoption Related to Forfeitures [Member]
Nature of Operations Basis of Presentation and Recently Issued Accounting Pronouncements [Line Items]
Increase (decrease) in retained earnings due to effect on adoption	(0.5)
Increase in deferred income tax assets due to effect on adoption	0.3
Increase in additional paid in capital due to effect on adoption	$ 0.8

Earnings Per Share - Additional

Earnings Per Share - Additional Information (Details) - shares shares in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Earnings per share reconciliation disclosure	Earnings per share (“EPS”) are calculated by dividing net income attributable to common stockholders by the weighted-average number of shares of Common Stock outstanding during the period. Diluted EPS are calculated similarly but includes potential dilution from the exercise of stock options and stock awards, except when the effect would be anti-dilutive.
Stock options and stock awards outstanding, excluded from computation of earnings per share amount	0.8	2.6

Earnings Per Share - Schedule o

Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Earnings (numerator)
Net income (loss) attributable to common stockholders	$ 1,217	$ (1,733)
Shares (denominator)
Weighted average common shares outstanding (basic)	48,316	48,288
Dilutive effect of stock options and stock awards outstanding	1,347
Adjusted weighted average common shares outstanding (diluted)	49,663	48,288
Earnings (loss) per share attributable to common stockholders
Basic	$ 0.03	$ (0.04)
Diluted	$ 0.02	$ (0.04)

Inventories - Schedule of Inven

Inventories - Schedule of Inventory Current (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Finished goods	$ 52,659	$ 66,930
Work-in-progress	51,261	45,408
Raw materials	87,381	81,145
Total	$ 191,301	$ 193,483

Goodwill and Intangible Asset31

Goodwill and Intangible Assets - Schedule of Changes in Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Goodwill
Goodwill beginning balance	$ 129,412
Foreign currency translation adjustment	1,647
Goodwill ending balance	$ 131,059

Goodwill and Intangible Asset32

Goodwill and Intangible Assets - Schedule of Intangible Assets Other Than Goodwill (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Intangible assets subject to amortization
Gross carrying amount	$ 232,747	$ 232,747
Accumulated amortization	(74,006)	(69,247)
Foreign currency translation adjustment	(8,403)	(8,442)
Total	150,338	155,058
Intangible assets with indefinite lives
Gross carrying amount	21,003	21,003
Foreign currency translation adjustment	(1,161)	(1,185)
Total	19,842	19,818
Total intangible assets, net	$ 170,180	$ 174,876

Goodwill and Intangible Asset33

Goodwill and Intangible Assets - Schedule of Amortization Expense Related to Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 4,758	$ 5,131

Income Tax Provision - Schedule

Income Tax Provision - Schedule of Information Related to Income Tax Expense (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Domestic pre-tax income (loss)	$ (13,211)	$ (10,000)
Foreign pre-tax income	15,313	7,700
Income tax provision (benefit)	$ 560	$ (552)
Effective tax rate	26.60%	27.10%
Impact of tax holidays on tax expense	$ (963)	$ (824)
Earnings per share impact of tax holidays
Basic	$ 0.02	$ 0.02
Diluted	$ 0.02	$ 0.02

Income Tax Provision - Addition

Income Tax Provision - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
U.S. statutory tax rate	35.00%	35.00%
Unrecognized tax benefits	$ 29.7
Income Tax Examination, Description	The Company files income tax returns in the U.S. federal jurisdiction and in various state and foreign jurisdictions. The Company is no longer subject to U.S. federal income tax examinations by tax authorities for tax years before 2007, or for the 2010 tax year. The Company is no longer subject to China income tax examinations by tax authorities for tax years before 2005. With respect to state and local jurisdictions and countries outside of the U.S. (other than China), with limited exceptions, the Company is no longer subject to income tax audits for years before 2006. Although the outcome of tax audits is always uncertain, the Company believes that adequate amounts of tax, interest and penalties, if any, have been provided for in the Company’s reserve for any adjustments that may result from tax audits. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in interest expense.
Significant Change in Unrecognized Tax Benefits, Nature of Event	It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions will significantly increase or decrease within the next 12 months.
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range Not Possible	At this time, an estimate of the range of the reasonably possible outcomes cannot be made.

Share-Based Compensation - Sche

Share-Based Compensation - Schedule of Share-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 4,131	$ 4,519
Cost of Goods Sold
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	158	201
Selling, General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	3,304	3,704
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 669	$ 614

Share-Based Compensation - Sc37

Share-Based Compensation - Schedule of Share-Based Compensation Expense by Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 4,131	$ 4,519
Stock Options
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	298	488
Share Grants
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation expense	$ 3,833	$ 4,031

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash proceeds received from stock option exercises	$ 2.2
Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based grant covering shares | shares	125,810
Payout percentage of award subject to performance criteria	200.00%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized	$ 0.9
Stock Options | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	1 year
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized	$ 35.9
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	2 years 4 months 24 days
Share-based compensation arrangement by share-based payment award, award vesting period	4 years
Restricted Stock | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental expense	$ 1.7
Restricted Stock | Chief Executive Officer | Common Stock | Current Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based/restricted stock grant covering shares | shares	62,905
Performance Grants | Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Incremental expense	$ 3.3
Performance Grants | Chief Executive Officer | Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based grant covering shares, description	Restricted stock awards and restricted stock units generally vest in equal annual installments over a four-year period. We also have share grants that are performance based that vest upon achievement of certain performance criteria. During the first quarter of 2017, the Company modified a previous performance-based award previously granted to our Chief Executive Officer.
Performance Grants | Chief Executive Officer | Common Stock | Previous Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based/restricted stock grant covering shares | shares	700,000
Performance Grants | Chief Executive Officer | Common Stock | Current Performance Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based/restricted stock grant covering shares | shares	62,905

Segment Information and Enter39

Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales from External Customers and Long Lived Assets by Geographical Areas (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 236,303	$ 222,738
Operating Segments
Segment Reporting Information [Line Items]
Net sales	302,240	281,887
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(65,937)	(59,149)
Asia
Segment Reporting Information [Line Items]
Net sales	185,004	176,900
Asia | Operating Segments
Segment Reporting Information [Line Items]
Net sales	218,343	209,750
Asia | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(33,339)	(32,850)
North America
Segment Reporting Information [Line Items]
Net sales	25,339	20,824
North America | Operating Segments
Segment Reporting Information [Line Items]
Net sales	42,879	31,858
North America | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(17,540)	(11,034)
Europe
Segment Reporting Information [Line Items]
Net sales	25,960	25,014
Europe | Operating Segments
Segment Reporting Information [Line Items]
Net sales	41,018	40,279
Europe | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	$ (15,058)	$ (15,265)

Segment Information and Enter40

Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 236,303	$ 222,738
Percentage of net sales		100.00%	100.00%
China
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 129,525	$ 128,882
Percentage of net sales		55.00%	58.00%
United States
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 21,199	$ 19,106
Percentage of net sales		9.00%	9.00%
Korea
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 17,559	$ 13,801
Percentage of net sales		7.00%	6.00%
Germany
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 17,423	$ 14,906
Percentage of net sales		7.00%	7.00%
Singapore
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 11,491	$ 12,079
Percentage of net sales		5.00%	5.00%
Taiwan
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales		$ 15,499	$ 13,886
Percentage of net sales		7.00%	6.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
Net sales	[1]	$ 23,607	$ 20,078
Percentage of net sales	[1]	10.00%	9.00%
[1]	Represents countries with less than 3% of the total net sales each.

Segment Information and Enter41

Segment Information and Enterprise-Wide Disclosure - Schedule of Net Sales by Countries (Parenthetical) (Details)		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Revenue Reconciling Item [Line Items]
Percentage of net sales		100.00%	100.00%
All Others
Segment Reporting Revenue Reconciling Item [Line Items]
Percentage of net sales	[1]	10.00%	9.00%
All Others | Maximum
Segment Reporting Revenue Reconciling Item [Line Items]
Percentage of net sales		3.00%	3.00%
[1]	Represents countries with less than 3% of the total net sales each.

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) £ in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)$ / £	Mar. 31, 2017GBP (£)$ / £
Commitments And Contingencies [Line Items]
Purchase Commitments	$ 33.7
Pension Plan, Defined Benefit
Commitments And Contingencies [Line Items]
Defined benefit plan, estimated future employer contributions in current fiscal year, description	We have a contributory defined benefit plan that covers certain employees in the United Kingdom. As of March 31, 2017, the unfunded liability for this defined benefit plan was approximately $27.2 million. We are obligated to make annual contributions, each year through December 2029, of approximately GPB 2 million (approximately $2.6 million based on a GBP:USD exchange rate of 1.3). The trustees are required to review the funding position every three years and the most recent review was carried out as of April 5, 2016. The outcome of a review can change the amount of the payment.
Defined benefit plan, expected future benefit payments in year one	$ 2.6	£ 2
Defined benefit plan, expected future benefit payments in year two	2.6	2
Defined benefit plan, expected future benefit payments in year three	2.6	2
Defined benefit plan, expected future benefit payments in year four	2.6	2
Defined benefit plan, expected future benefit payments in year five	2.6	2
Defined benefit plan, expected future benefit payments in eight fiscal years thereafter	$ 2.6	£ 2
GBP:USD exchange rate | $ / £	1.3	1.3
Unfunded liability of defined benefit plan	$ 27.2

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Details) - Deferred Compensation Plan $ in Millions	3 Months Ended
	Mar. 31, 2017USD ($)
Defined Benefit Plan Disclosure [Line Items]
Deferred compensation arrangements, overall, description	We maintain a Non-Qualified Deferred Compensation Plan (the “Deferred Compensation Plan”) for executive officers, key employees and members of the Board of Directors. The Deferred Compensation Plan allows eligible participants to defer the receipt of eligible compensation, including equity awards, until designated future dates. We offset our obligations under the Deferred Compensation Plan by investing in the actual underlying investments. These investments are classified as trading securities and are carried at fair value. At March 31, 2017, these investments totaled approximately $6.6 million. All gains and losses in these investments are materially offset by corresponding gains and losses in the Deferred Compensation Plan liabilities.
Deferred compensation plan assets	$ 6.6

Related Parties - Additional In

Related Parties - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Lite On Semiconductor
Related Party Transaction [Line Items]
Related Party ownership of common stock	16.70%
Related Party Transaction, Description of Transaction	LSC is our largest stockholder, owning approximately16.7% of our outstanding Common Stock as of March 31, 2017, and is a member of the Lite-On Group of companies.
Keylink
Related Party Transaction [Line Items]
Related Party ownership of common stock	5.00%
Related Party Transaction, Description of Transaction	Keylink is our 5% joint venture partner in our Shanghai assembly and test facilities.
Related Party Transaction Consulting Fees from Transactions with Related Party	$ 3.4	$ 4.1
Chengdu Ya Guang Electronic Company Limited ("Ya Guang")
Related Party Transaction [Line Items]
Related Party Transaction, Description of Transaction	In addition, Chengdu Ya Guang Electronic Company Limited (“Ya Guang”) is our 2% joint venture partner in one of our Chengdu assembly and test facilities and is our 5% joint venture partner in our other Chengdu assembly and test facilities
Chengdu Ya Guang Electronic Company Limited ("Ya Guang") | Chengdu | Assembly and Test Facility One
Related Party Transaction [Line Items]
Related Party ownership of common stock	2.00%
Chengdu Ya Guang Electronic Company Limited ("Ya Guang") | Chengdu | Assembly and Test Facility Two
Related Party Transaction [Line Items]
Related Party ownership of common stock	5.00%

Related Parties - Schedule of S

Related Parties - Schedule of Sales and Purchases of Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Lite On Semiconductor
Related Party Transaction [Line Items]
Net sales from related parties	$ 231	$ 120
Purchases from related parties	6,019	5,210
Nuvoton
Related Party Transaction [Line Items]
Purchases from related parties	2,909	2,947
Keylink
Related Party Transaction [Line Items]
Net sales from related parties	1,822	1,911
Purchases from related parties	$ 1,078	$ 1,260

Related Parties - Schedule of A

Related Parties - Schedule of Account Receivable and Payable of Related Party Transactions (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Lite On Semiconductor
Related Party Transaction [Line Items]
Accounts receivable	$ 239	$ 301
Accounts payable	4,267	4,333
Keylink
Related Party Transaction [Line Items]
Accounts receivable	4,762	5,394
Accounts payable	4,280	4,295
Nuvoton
Related Party Transaction [Line Items]
Accounts payable	$ 1,319	$ 950

Restructuring Costs - Additiona

Restructuring Costs - Additional Information (Details) - KFAB Wafer Manufacturing Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Feb. 28, 2017
Restructuring Cost And Reserve [Line Items]
Restructuring activities description	In February 2017, the Company announced its plan to transfer its wafer fabrication operation in Lee’s Summit, MO, (“KFAB”) to other Company-owned wafer fabrication plants and external foundries. The Company expects to cease operations at KFAB late in third quarter 2017 and to vacate the premises no later than November 15, 2017.
Minimum
Restructuring Cost And Reserve [Line Items]
Expected shutdown costs		$ 10
Maximum
Restructuring Cost And Reserve [Line Items]
Expected shutdown costs		$ 12

Restructuring Costs - Schedule

Restructuring Costs - Schedule of Costs Recorded in Accrued Liabilities (Details) - KFAB Wafer Manufacturing Operations $ in Thousands	3 Months Ended
	Mar. 31, 2017USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring costs relating to KFAB shutdown	$ 2,827
Early Supply Contract Termination
Restructuring Cost And Reserve [Line Items]
Restructuring costs relating to KFAB shutdown	2,231
Retention Costs | Cost of Goods Sold
Restructuring Cost And Reserve [Line Items]
Restructuring costs relating to KFAB shutdown	490
Retention Costs | Selling, General and Administrative
Restructuring Cost And Reserve [Line Items]
Restructuring costs relating to KFAB shutdown	91
Retention Costs | Research and Development
Restructuring Cost And Reserve [Line Items]
Restructuring costs relating to KFAB shutdown	$ 15