Marvell Technology 10-Q 6 Dec 16 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares shares in Millions	9 Months Ended
	Oct. 29, 2016	Nov. 28, 2016
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Oct. 29, 2016
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Trading Symbol	MRVL
Entity Registrant Name	MARVELL TECHNOLOGY GROUP LTD
Entity Central Index Key	1,058,057
Current Fiscal Year End Date	--01-28
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		507.9

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Current assets:
Cash and cash equivalents	$ 751,588	$ 1,278,180
Short-term investments	898,784	1,004,569
Accounts receivable, net	362,195	323,300
Inventories	198,843	210,017
Prepaid expenses and other current assets	49,731	102,560
Total current assets	2,261,141	2,918,626
Property and equipment, net	265,984	299,540
Long-term investments	8,974	11,296
Goodwill	2,029,945	2,029,945
Acquired intangible assets, net	9,334	18,010
Other non-current assets	179,068	164,710
Total assets	4,754,446	5,442,127
Current liabilities:
Accounts payable	183,252	180,372
Accrued liabilities	124,289	132,060
Carnegie Mellon University accrued litigation settlement		736,000
Accrued employee compensation	132,050	121,631
Deferred income	63,656	55,722
Total current liabilities	503,247	1,225,785
Non-current income taxes payable	40,524	49,256
Other non-current liabilities	30,181	26,963
Total liabilities	573,952	1,302,004
Commitments and contingencies (Note 10)
Shareholders' equity:
Common shares, $0.002 par value	1,017	1,015
Additional paid-in capital	3,057,535	3,028,921
Accumulated other comprehensive income (loss)	1,553	(795)
Retained earnings	1,120,389	1,110,982
Total shareholders' equity	4,180,494	4,140,123
Total liabilities and shareholders' equity	$ 4,754,446	$ 5,442,127

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Oct. 29, 2016	Jan. 30, 2016
Common shares, par value	$ 0.002	$ 0.002

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Net revenue	$ 654,422	$ 674,890	$ 1,821,648	$ 2,109,670
Operating costs and expenses:
Cost of goods sold	286,063	379,254	832,881	1,192,126
Research and development	222,463	252,502	691,812	818,257
Selling and marketing	30,576	30,582	93,022	97,597
General and administrative	28,904	33,206	97,049	108,884
Carnegie Mellon University litigation settlement				654,667
Restructuring and other related charges	1,164	35,270	6,326	48,862
Amortization and write-off of acquired intangible assets	2,299	3,150	7,221	8,286
Total operating costs and expenses	571,469	733,964	1,728,311	2,928,679
Operating income (loss)	82,953	(59,074)	93,337	(819,009)
Interest and other income, net	5,470	4,644	13,242	16,601
Income (loss) before income taxes	88,423	(54,430)	106,579	(802,408)
Provision for income taxes	15,807	3,320	5,337	13,192
Net income (loss)	$ 72,616	$ (57,750)	$ 101,242	$ (815,600)
Net income (loss) per share:
Basic	$ 0.14	$ (0.11)	$ 0.20	$ (1.59)
Diluted	$ 0.14	$ (0.11)	$ 0.20	$ (1.59)
Weighted average shares:
Basic	511,090	504,831	510,373	512,476
Diluted	522,091	504,831	516,476	512,476
Cash dividends declared per share	$ 0.06	$ 0.06	$ 0.18	$ 0.18

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Net income (loss)	$ 72,616	$ (57,750)	$ 101,242	$ (815,600)
Other comprehensive income (loss), net of tax:
Net change in unrealized gain (loss) on marketable securities	(2,018)	(491)	2,391	(3,809)
Net change in unrealized gain (loss) on auction rate securities		59		(44)
Net change in unrealized gain (loss) on cash flow hedges	(444)	(472)	(43)	1,363
Other comprehensive income (loss), net of tax	(2,462)	(904)	2,348	(2,490)
Comprehensive income (loss), net of tax	$ 70,154	$ (58,654)	$ 103,590	$ (818,090)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015
Cash flows from operating activities:
Net income (loss)	$ 101,242	$ (815,600)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	81,168	77,376
Share-based compensation	89,912	101,360
Amortization and write-off of acquired intangible assets	8,676	9,741
Non-cash restructuring and other related charges	2,081	15,743
Other non-cash expense, net	1,020	5,926
Excess tax benefits from share-based compensation	(10)	(27)
Changes in assets and liabilities:
Accounts receivable	(38,895)	40,027
Inventories	10,944	21,042
Prepaid expenses and other assets	(2,578)	18,132
Accounts payable	10,541	(43,735)
Accrued liabilities and other non-current liabilities	(23,735)	12,016
Carnegie Mellon University accrued litigation settlement	(736,000)	734,715
Accrued employee compensation	10,419	(14,636)
Deferred income	7,934	(10,034)
Net cash provided by (used in) operating activities	(477,281)	152,046
Cash flows from investing activities:
Purchases of available-for-sale securities	(343,810)	(922,830)
Sales of available-for-sale securities	458,744	544,515
Maturities of available-for-sale securities	198,293	281,684
Distribution from privately-held companies	274	78
Purchase of time deposits	(200,000)
Maturities of time deposits	50,000
Purchases of technology licenses	(8,439)	(6,657)
Purchases of property and equipment	(37,724)	(33,361)
Purchase of equipment previously leased		(10,240)
Proceeds from sale of equipment held for sale		10,007
Net cash provided by (used in) investing activities	117,338	(136,804)
Cash flows from financing activities:
Repurchase of common stock	(56,531)	(260,875)
Proceeds from employee stock plans	11,836	59,348
Minimum tax withholding paid on behalf of employees for net share settlement	(16,281)	(23,876)
Dividend payments to shareholders	(91,835)	(92,374)
Payments on technology license obligations	(13,848)	(11,416)
Excess tax benefits from share-based compensation	10	27
Net cash used in financing activities	(166,649)	(329,166)
Net decrease in cash and cash equivalents	(526,592)	(313,924)
Cash and cash equivalents at beginning of period	1,278,180	1,210,977
Cash and cash equivalents at end of period	$ 751,588	$ 897,053

The Company and Basis of Presen

The Company and Basis of Presentation	9 Months Ended
	Oct. 29, 2016
The Company and Basis of Presentation	Note 1. The Company and Basis of Presentation The Company Marvell Technology Group Ltd., a Bermuda exempted company, and its subsidiaries (the “Company”), is a fabless semiconductor provider of high-performance application-specific standard products. The Company’s core strength is the development of complex System-on-a-Chip and System-in-a-Package devices, leveraging its extensive technology portfolio of intellectual property in the areas of analog, mixed-signal, digital signal processing, and embedded and standalone integrated circuits. The majority of the Company’s product portfolio leverages embedded central processing unit technology. The Company also develops platforms that it defines as integrated hardware along with software that incorporates digital computing technologies designed and configured to provide an optimized computing solution. The Company’s broad product portfolio includes devices for data storage, enterprise-class Ethernet data switching, Ethernet physical-layer transceivers, wireless connectivity, Internet-of-Things devices and multimedia solutions. Basis of Presentation The Company’s fiscal year is the 52- or 53-week period ending on the Saturday closest to January 31. Accordingly, every fifth or sixth fiscal year will have a 53-week period. The additional week in a 53-week year is added to the fourth quarter, making such quarter consist of 14 weeks. Fiscal 2017 and 2016 each have a 52-week period. The next 53-week year will be fiscal 2018. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair statement of the results for the interim periods have been included in the Company’s unaudited condensed consolidated balance sheet as of October 29, 2016, the results of its operations for the three and nine months ended October 29, 2016 and October 31, 2015, its comprehensive income (loss) for the three and nine months ended October 29, 2016 and October 31, 2015, and its cash flows for the nine months ended October 29, 2016 and October 31, 2015. The January 30, 2016 condensed consolidated balance sheet data was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 30, 2016, but does not include all disclosures required for annual periods. These condensed consolidated financial statements and related notes are unaudited and should be read in conjunction with the Company’s audited financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 30, 2016 as filed on July 21, 2016 with the Securities and Exchange Commission (“SEC”). The results of operations for the three and nine months ended October 29, 2016 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to performance-based compensation, revenue recognition, provisions for sales returns and allowances, inventory excess and obsolescence, investment fair values, goodwill and other intangible assets, restructuring, income taxes, litigation and other contingencies. In addition, the Company uses assumptions when employing the Monte Carlo simulation and Black-Scholes valuation models to calculate the fair value of share-based awards that are granted. Actual results could differ from these estimates, and such differences could affect the results of operations reported in future periods. Principles of Consolidation The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated. The functional currency of the Company and its subsidiaries is the U.S. dollar.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Oct. 29, 2016
Recent Accounting Pronouncements	Note 2. Recent Accounting Pronouncements Accounting Pronouncements Recently Adopted In April 2015, the Financial Accounting Standards Board issued new guidance to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement, which the Company adopted beginning in the first quarter of fiscal 2017. The guidance provides a basis for evaluating whether a cloud computing arrangement includes a software license and whether the license arrangement should be accounted for as an intangible asset. This guidance also strikes from previous authoritative guidance, the use by analogy to the accounting for capital leases, which the Company previously applied in the accounting for certain of its technology license agreements. As such, the Company accounts for new agreements under the new guidance by determining if capitalization as an asset is appropriate or if the arrangement should be treated as a subscription with expense recognized in the period when service is received. Similarly, the Company will re-evaluate the accounting for any renewals to existing license agreements in accordance with the new guidance as they occur. Accounting Pronouncements Not Yet Effective In August 2016, the FASB issued an accounting standards update to add or clarify guidance on the classification of certain cash receipts and cash payments in the statement of cash flows. The amendments in the update provide guidance on eight specific cash flow issues, and is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The amendments to the guidance should be applied using a retrospective transition method for each period presented and if it is impracticable to apply all of the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company is evaluating the effect this new guidance will have on its consolidated statement of cash flows. In October 2016, the FASB issued new guidance which simplifies the accounting for the income tax effects of intra-entity transfers and will require companies to recognize the income tax effects of intra-entity transfers of assets other than inventory when the transfer occurs. Previous guidance required companies to defer the income tax effects of intra-entity transfers of assets until the asset had been sold to an outside party or otherwise recognized. The guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In November 2016, the FASB issued new guidance which requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. As a result, companies will no longer present transfers between cash and cash equivalents, and restricted cash and restricted cash equivalents in the statement of cash flows. The guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect this new guidance will have on its consolidated financial statements.

Investments

Investments	9 Months Ended
	Oct. 29, 2016
Investments	Note 3. Investments The following tables summarize the Company’s investments (in thousands): October 29, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 487,067 $ 1,968 $ (289 ) $ 488,746 U.S. government and agency debt 165,538 86 (64 ) 165,560 Asset backed securities 50,909 82 (16 ) 50,975 Foreign government and agency debt 11,925 — (17 ) 11,908 Municipal debt securities 31,610 5 (20 ) 31,595 Held-to-maturity: Time deposits 150,000 — — 150,000 Total short-term investments 897,049 2,141 (406 ) 898,784 Long-term investments: Available-for-sale: Auction rate securities 8,974 — — 8,974 Total long-term investments 8,974 — — 8,974 Total investments $ 906,023 $ 2,141 $ (406 ) $ 907,758 January 30, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 558,337 $ 766 $ (1,282 ) $ 557,821 U.S. government and agency debt 317,595 64 (254 ) 317,405 Asset backed securities 76,711 81 (56 ) 76,736 Foreign government and agency debt 21,370 2 (14 ) 21,358 Municipal debt securities 31,211 45 (7 ) 31,249 Total short-term investments 1,005,224 958 (1,613 ) 1,004,569 Long-term investments: Available-for-sale: Auction rate securities 11,296 — — 11,296 Total long-term investments 11,296 — — 11,296 Total investments $ 1,016,520 $ 958 $ (1,613 ) $ 1,015,865 As of October 29, 2016, the Company’s investment portfolio included auction rate securities with an aggregate par value of $10.0 million. Although these auction rate securities have continued to pay interest and the underlying collateral has not deteriorated, there is currently limited trading volume. The Company uses a discounted cash flow model to estimate the fair value of the auction rate securities based on its estimated timing and amount of future interest and principal payments. In developing the cash flow model, the Company considers the credit quality and liquidity of the underlying securities and related issuer, the collateralization of underlying security investments and other considerations. The Company made a determination in January 2016 that it did not expect to recover the par value of these auction rate securities and considers any impairment of these securities to be other-than-temporary. There has been no change in circumstances since January 2016 based upon the current time horizon for holding these securities and the continuation of an illiquid market. Based on the Company’s assessment of fair value as of October 29, 2016, the Company determined there was no further impairment of these auction rate securities. In the nine months ended October 29, 2016, the Company sold auction rate securities with an aggregate par value of $2.5 million for total net proceeds of $2.4 million. The carrying value of these auction rate securities was $2.3 million and resulted in a net gain of $0.1 million recorded in interest and other income, net, in the nine months ended October 29, 2016. Gross realized gains and gross realized losses on sales of available-for-sale securities are presented in the following tables (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Gross realized gains $ 298 $ 524 $ 966 $ 1,222 Gross realized losses (46 ) (877 ) (289 ) (1,214 ) Total net realized gains (losses) $ 252 $ (353 ) $ 677 $ 8 The contractual maturities of available-for-sale securities are presented in the following tables (in thousands): October 29, 2016 January 30, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 390,731 $ 390,776 $ 304,117 $ 304,035 Due between one and five years 498,071 499,767 689,847 689,279 Due over five years 17,221 17,215 22,556 22,551 $ 906,023 $ 907,758 $ 1,016,520 $ 1,015,865 For individual securities that have been in a continuous unrealized loss position, the fair value and gross unrealized loss for these securities aggregated by investment category and length of time in an unrealized position are presented in the following tables (in thousands): October 29, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Corporate debt securities $ 116,138 $ (234 ) $ 21,515 $ (55 ) $ 137,653 $ (289 ) U.S. government and agency debt 58,482 (60 ) 6,995 (4 ) 65,477 (64 ) Asset backed securities 5,698 (8 ) 5,994 (8 ) 11,692 (16 ) Foreign government and agency debt 8,509 (15 ) 1,501 (2 ) 10,010 (17 ) Municipal debt securities 18,340 (18 ) 998 (2 ) 19,338 (20 ) Total securities $ 207,167 $ (335 ) $ 37,003 $ (71 ) $ 244,170 $ (406 ) January 30, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Corporate debt securities $ 283,138 $ (1,237 ) $ 14,383 $ (45 ) $ 297,521 $ (1,282 ) U.S. government and agency debt 263,325 (254 ) — — 263,325 (254 ) Asset backed securities 46,646 (56 ) — — 46,646 (56 ) Foreign government and agency debt 16,458 (14 ) — — 16,458 (14 ) Municipal debt securities 2,943 (5 ) 1,571 (2 ) 4,514 (7 ) Total securities $ 612,510 $ (1,566 ) $ 15,954 $ (47 ) $ 628,464 $ (1,613 )

Supplemental Financial Informat

Supplemental Financial Information	9 Months Ended
	Oct. 29, 2016
Supplemental Financial Information	Note 4. Supplemental Financial Information (in thousands) Consolidated Balance Sheets October 29, January 30, 2016 2016 Inventories: Work-in-process $ 117,624 $ 131,471 Finished goods 81,219 78,546 Total inventories $ 198,843 $ 210,017 Inventory held by third-party logistics providers is recorded as consigned inventory on the Company’s consolidated balance sheet. The amount of inventory held at third-party logistics providers was $23.5 million and $21.0 million at October 29, 2016 and January 30, 2016, respectively. October 29, January 30, 2016 2016 Property and equipment, net: Machinery and equipment $ 598,781 $ 578,627 Buildings 144,320 144,320 Computer software 99,668 102,928 Land 53,373 53,373 Building improvements 49,970 49,927 Leasehold improvements 50,194 50,192 Furniture and fixtures 24,261 27,119 Construction in progress 4,580 1,353 1,025,147 1,007,839 Less: Accumulated depreciation and amortization (759,163 ) (708,299 ) Total property and equipment, net $ 265,984 $ 299,540 October 29, January 30, 2016 2016 Other non-current assets: Technology and other licenses $ 61,479 $ 48,770 Deferred tax assets 36,727 34,505 Investments in privately-held companies 5,530 5,804 Prepaid land use rights 12,888 13,123 Deposits 48,771 51,512 Other 13,673 10,996 Total other non-current assets $ 179,068 $ 164,710 October 29, January 30, 2016 2016 Accrued liabilities: Accrued rebates $ 30,091 $ 41,320 Accrued royalties 16,181 16,217 Technology license obligations 25,842 17,985 Accrued legal expense 7,401 9,761 Accrued litigation 2,750 3,830 Other 42,024 42,947 Total accrued liabilities $ 124,289 $ 132,060 October 29, January 30, 2016 2016 Deferred income: Deferred revenue $ 89,095 $ 77,935 Deferred cost of goods sold (25,439 ) (22,213 ) Deferred income $ 63,656 $ 55,722 October 29, January 30, 2016 2016 Other non-current liabilities: Technology license obligations $ 17,420 $ 12,461 Long-term accrued employee compensation 6,504 6,078 Other 6,257 8,424 Other non-current liabilities $ 30,181 $ 26,963 Accumulated other comprehensive income (loss) The changes in accumulated other comprehensive income (loss) by components are presented in the following tables (in thousands): Unrealized Gain Unrealized Gain Unrealized Gain Total Balance at January 30, 2016 $ (656 ) $ — $ (139 ) $ (795 ) Other comprehensive income before reclassifications 2,868 — 479 3,347 Amounts reclassified from accumulated other comprehensive loss (477 ) — (522 ) (999 ) Other comprehensive income (loss), net of tax 2,391 — (43 ) 2,348 Balance at October 29, 2016 $ 1,735 $ — $ (182 ) $ 1,553 Unrealized Gain Unrealized Gain Unrealized Gain Total Balance at January 31, 2015 $ 3,768 $ (2,274 ) $ (1,186 ) $ 308 Other comprehensive income (loss) before reclassifications (3,360 ) (44 ) 1,296 (2,108 ) Amounts reclassified from accumulated other comprehensive income (loss) (449 ) — 67 (382 ) Other comprehensive income (loss), net of tax (3,809 ) (44 ) 1,363 (2,490 ) Balance at October 31, 2015 $ (41 ) $ (2,318 ) $ 177 $ (2,182 ) The amounts reclassified from accumulated other comprehensive income (loss) by components are presented in the following table (in thousands): Three Months Ended Nine Months Ended Affected Line Item in the October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Interest and other income, net: Available-for-sale securities: Marketable securities $ 415 $ (4 ) $ 477 $ 449 Operating costs and expenses: Cash flow hedges: Research and development 118 545 457 (68 ) Selling and marketing 3 6 10 (57 ) General and administrative 14 51 55 58 Total $ 550 $ 598 $ 999 $ 382 Consolidated Statements of Operations Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Interest and other income, net: Interest income $ 3,370 $ 3,932 $ 10,005 $ 11,980 Net realized gain (loss) on investments 252 (353 ) 677 8 Currency translation gain 944 1,134 1,961 5,035 Other income 986 86 896 145 Interest expense (82 ) (155 ) (297 ) (567 ) $ 5,470 $ 4,644 $ 13,242 $ 16,601 Net income (loss) per share The Company reports both basic net income (loss) per share, which is based on the weighted average number of common shares outstanding during the period, and diluted net income (loss) per share, which is based on the weighted average number of common shares outstanding and potentially dilutive common shares outstanding during the period. The computations of basic and diluted net income (loss) per share are presented in the following table (in thousands, except per share amounts): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, Numerator: Net income (loss) $ 72,616 $ (57,750 ) $ 101,242 $ (815,600 ) Denominator: Weighted average shares — basic 511,090 504,831 510,373 512,476 Effect of dilutive securities: Share-based awards 11,001 — 6,103 — Weighted average shares — diluted 522,091 504,831 516,476 512,476 Net income (loss) per share: Basic $ 0.14 $ (0.11 ) $ 0.20 $ (1.59 ) Diluted $ 0.14 $ (0.11 ) $ 0.20 $ (1.59 ) Potential dilutive securities include dilutive common shares from share-based awards attributable to the assumed exercise of stock options, restricted stock units and employee stock purchase plan shares using the treasury stock method. Under the treasury stock method, potential common shares outstanding are not included in the computation of diluted net income per share, if their effect is anti-dilutive. Anti-dilutive potential shares are presented in the following table (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, Weighted average shares outstanding: Share-based awards 20,211 68,613 37,309 62,825 Anti-dilutive potential shares from share-based awards are excluded from the calculation of diluted earnings per share for all periods reported above because either their exercise price exceeded the average market price during the period or the share-based awards were determined to be anti-dilutive based on applying the treasury stock method. Anti-dilutive potential shares from share-based awards are also excluded from the calculation of diluted earnings per share for the three and nine months ended October 31, 2015 due to the net loss reported in those periods.

Derivative Financial Instrument

Derivative Financial Instruments	9 Months Ended
	Oct. 29, 2016
Derivative Financial Instruments	Note 5. Derivative Financial Instruments The Company manages some of its foreign currency exchange rate risk through the purchase of foreign currency exchange contracts that hedge against the short-term effect of currency fluctuations. The Company’s policy is to enter into foreign currency forward contracts with maturities less than 12 months that mitigate the effect of rate fluctuations on certain local currency denominated operating expenses. All derivative instruments are recorded at fair value in either prepaid expenses and other current assets or accrued liabilities. The Company reports cash flows from derivative instruments in cash flows from operating activities. The Company uses quoted prices to value its derivative instruments. The notional amounts of outstanding forward contracts were as follows (in thousands): Buy Contracts October 29, January 30, 2016 2016 Israeli shekel $ 36,641 $ 19,082 Cash Flow Hedges. Other Foreign Currency Forward Contracts. The fair value of foreign currency exchange contracts was not significant as of any period presented. The following table provides information about gains (losses) associated with the Company’s derivative financial instruments (in thousands): Amount of Gains (Losses) in Statement of Operations Three Months Ended Nine Months Ended Location of Gains (Losses) October 29, October 31, October 29, October 31, in Statement of Operations 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Forward contracts: Research and development $ 242 $ 116 $ 693 $ (460 ) Selling and marketing 4 2 14 (6 ) General and administrative 29 11 82 (34 ) $ 275 $ 129 $ 789 $ (500 ) The portion of gains (losses) excluded from the assessment of hedge effectiveness are included in interest and other income, net, and these amounts were not material in the three and nine months ended October 29, 2016 and October 31, 2015. In addition, realized losses from forward contracts that are not designated as hedging instruments that are included in interest and other income, net, were not material in the three and nine months ended October 29, 2016 and October 31, 2015. The Company also reports hedge ineffectiveness from derivative financial instruments in current earnings which is not material in the three and nine months ended October 29, 2016 and October 31, 2015. No cash flow hedges were terminated as a result of forecasted transactions that did not occur.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Oct. 29, 2016
Fair Value Measurements	Note 6. Fair Value Measurements Fair value is an exit price representing the amount that would be received in the sale of an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or a liability. As a basis for considering such assumptions, the accounting guidance establishes a three-tier value hierarchy, which prioritizes the inputs used in the valuation methodologies in measuring fair value: Level 1—Observable inputs that reflect quoted prices for identical assets or liabilities in active markets. Level 2—Other inputs that are directly or indirectly observable in the marketplace. Level 3—Unobservable inputs that are supported by little or no market activity. The fair value hierarchy also requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The Company’s Level 1 assets include institutional money-market funds that are classified as cash equivalents and marketable investments in U.S. government and agency debt, which are valued primarily using quoted market prices. The Company’s Level 2 assets include its marketable investments in time deposits, corporate debt securities, foreign government and agency debt, municipal debt securities and asset backed securities as the market inputs used to value these instruments consist of market yields, reported trades and broker/dealer quotes, which are corroborated with observable market data. In addition, forward contracts, and the severance pay fund are classified as Level 2 assets as the valuation inputs are based on quoted prices and market observable data of similar instruments. The Company’s investments in auction rate securities are classified as Level 3 assets because there are currently no active markets for the auction rate securities and consequently the Company is unable to obtain independent valuations from market sources. Therefore, the auction rate securities are valued using a discounted cash flow model. Some of the inputs to the discounted cash flow model are unobservable in the market. The total amount of assets measured using Level 3 valuation methodologies represented 0.2% of total assets as of October 29, 2016. There were no transfers of assets between levels in either the nine months ended October 29, 2016 or October 31, 2015. The tables below set forth, by level, the Company’s assets and liabilities that are measured at fair value on a recurring basis. The tables do not include assets and liabilities that are measured at historical cost or any basis other than fair value (in thousands): Fair Value Measurements at October 29, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 63,191 $ — $ — $ 63,191 Time deposits — 34,459 — 34,459 Municipal debt securities — 8,740 — 8,740 Corporate debt securities — 30,529 — 30,529 Short-term investments: U.S. government and agency debt 165,560 — — 165,560 Corporate debt securities — 488,746 — 488,746 Asset backed securities — 50,975 — 50,975 Foreign government and agency debt — 11,908 — 11,908 Municipal debt securities — 31,595 — 31,595 Time deposits — 150,000 — 150,000 Prepaid expenses and other current assets: Foreign currency forward contracts — 11 — 11 Long-term investments: Auction rate securities — — 8,974 8,974 Other non-current assets: Severance pay fund — 707 — 707 Total assets $ 228,751 $ 807,670 $ 8,974 $ 1,045,395 Liabilities Accrued liabilities: Foreign currency forward contracts $ — $ 257 $ — $ 257 Fair Value Measurements at January 30, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 160,400 $ — $ — $ 160,400 Time deposits — 209,405 — 209,405 U.S. government and agency debt 184,374 — — 184,374 Corporate debt securities — 54,689 — 54,689 Short-term investments: U.S. government and agency debt 317,405 — — 317,405 Corporate debt securities — 557,821 — 557,821 Asset backed securities — 76,736 — 76,736 Foreign government and agency debt — 21,358 — 21,358 Municipal debt securities — 31,249 — 31,249 Prepaid expenses and other current assets: Foreign currency forward contracts — 30 — 30 Long-term investments: Auction rate securities — — 11,296 11,296 Other non-current assets: Severance pay fund — 678 — 678 Total assets $ 662,179 $ 951,966 $ 11,296 $ 1,625,441 Liabilities Accrued liabilities: Foreign currency forward contracts $ — $ 195 $ — $ 195 The following table summarizes the change in fair value for Level 3 assets (in thousands): Nine Months Ended October 29, October 31, 2016 2015 Beginning balance $ 11,296 $ 10,226 Sales and redemptions (2,322 ) — Unrealized losses included in accumulated other comprehensive income — (44 ) Ending balance $ 8,974 $ 10,182

Acquired Intangible Assets, Net

Acquired Intangible Assets, Net	9 Months Ended
	Oct. 29, 2016
Acquired Intangible Assets, Net	Note 7. Acquired Intangible Assets, Net The carrying amounts of acquired intangible assets, net, are as follows (in thousands): October 29, 2016 January 30, 2016 Range of Gross Accumulated Write-Offs Net Gross Accumulated Write-Offs Net Purchased and core technology 4 - 8 years $ 35,498 $ (26,574 ) $ 8,924 $ 35,498 $ (21,910 ) $ 13,588 Customer intangibles 5 - 7 years 28,600 (28,190 ) 410 28,600 (24,178 ) 4,422 Total intangible assets, net $ 64,098 $ (54,764 ) $ 9,334 $ 64,098 $ (46,088 ) $ 18,010 Based on the identified intangible assets recorded at October 29, 2016, the future amortization expense for the next five fiscal years is as follows (in thousands): Fiscal Year Remainder of fiscal 2017 $ 1,966 2018 5,508 2019 1,860 2020 and thereafter — $ 9,334

Restructuring and Other Related

Restructuring and Other Related Charges	9 Months Ended
	Oct. 29, 2016
Restructuring and Other Related Charges	Note 8. Restructuring and Other Related Charges The following table provides a summary of restructuring and other related charges as presented in the unaudited condensed consolidated statements of operations (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cost of goods sold $ — $ 10,285 $ — $ 10,285 Restructuring and other related charges 1,164 35,270 6,326 48,862 $ 1,164 $ 45,555 $ 6,326 $ 59,147 The following table presents details of charges recorded by the Company related to the restructuring actions described below (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Severance and related costs $ — $ 28,773 $ 15 $ 40,478 Facilities and related costs 108 657 4,585 882 Other exit-related costs — 1,855 — 2,044 108 31,285 4,600 43,404 Release of reserves: Severance — — (86 ) — Other exit-related — — (269 ) — Impairment and write-off of assets: Inventory — 8,046 — 8,046 Technology license — 1,250 — 1,250 Equipment and other 1,056 4,974 2,081 6,447 Restructuring and other related charges $ 1,164 $ 45,555 $ 6,326 $ 59,147 The Company recorded $1.2 million and $6.3 million in the three and nine months ended October 29, 2016, respectively, in connection with restructuring and other related charges as described in the following paragraphs. In connection with the Company’s decision to further reduce its research and development operations in Israel as announced in May 2015, the Company and the landlord of its facility located in Israel reached agreement for the Company to completely vacate and release certain floors back to the landlord for purposes of future sublease. As a result, the Company recorded charges of $4.3 million in the nine months ended October 29, 2016 primarily for the remaining lease obligation, net of sublease income, associated with the floors it vacated in the first half of fiscal 2017. In connection with the restructuring of its mobile platform business announced in September 2015, the Company recorded a charge of $1.1 million in the three months ended October 29, 2016 to write off the remaining mobile-related equipment classified as held for sale that it was unable to sell. Total restructuring charges in the nine months ended October 29, 2016 were $1.9 million, primarily for the write off of all remaining mobile-related equipment that was previously classified as held for sale, which was offset by a recovery of $0.3 million from the release of reserve related to the loss on contract termination previously recognized in fiscal 2016. Of the remaining actions that were expected to be completed in the first half of fiscal 2017 related to restructuring of the mobile platform business, substantially all of the activities have been completed. Total cumulative charges recorded in fiscal 2016 through the nine months ended October 29, 2016 related to this restructuring action were $46.4 million, which included $28.1 million of severance benefits, a $1.3 million loss on early contract termination, $8.8 million for impairment of technology licenses and certain equipment, $0.2 million related to facility closures and an $8.0 million write down of inventory. The following table sets forth a reconciliation of the beginning and ending restructuring liability balances by each major type of costs associated with the restructuring charges (in thousands): Severance Facilities Other and Related and Related Exit-Related Costs Costs Costs Total Balance at January 30, 2016 $ 1,155 $ 1,043 $ 1,644 $ 3,842 Restructuring charges 15 4,585 — 4,600 Net cash payments (969 ) (4,606 ) (200 ) (5,775 ) Release of reserves (86 ) — (269 ) (355 ) Exchange rate adjustment 3 57 — 60 Balance at October 29, 2016 $ 118 $ 1,079 $ 1,175 $ 2,372 The balance at October 29, 2016 for other exit-related costs includes contract termination costs that are expected to be paid upon execution of the settlement agreements, and for facilities and related costs includes remaining payments under lease obligations related to vacated space that are expected to be paid through fiscal 2018.

Income Tax

Income Tax	9 Months Ended
	Oct. 29, 2016
Income Tax	Note 9. Income Tax The income tax expense for the three months ended October 29, 2016 was primarily due to a current income tax expense of $12.4 million, an expense of $0.6 million related to settlements of prior year tax in foreign jurisdictions, plus a net increase in unrecognized tax benefits of $2.8 million. The net increase in unrecognized tax benefits arose from the accrual of penalties and interest of $0.5 million on the outstanding unrecognized tax benefit balance, plus the accrual of an additional $2.3 million for changes in prior year tax positions. The income tax expense for the nine months ended October 29, 2016 was primarily due to a current income tax expense of $16.9 million, plus an expense of $0.6 million related to settlements of prior year tax in foreign jurisdictions, offset by a tax benefit of $9.7 million from a net reduction in unrecognized tax benefits and a deferred tax benefit of $2.5 million for the portion of a payment to the Company’s former Chief Executive Officer that became deductible after his departure from the Company in April 2016. The net reduction in unrecognized tax benefits arose from the release of $14.3 million due to expiration of the statute of limitations in certain non-U.S. jurisdictions, which was partially offset by penalties and interest of $2.0 million accrued on the outstanding unrecognized tax benefit balance, and the accrual of an additional $2.6 million for changes in prior year tax positions. The income tax expense for the three months ended October 31, 2015 was primarily due to current income tax liability of $1.5 million, a $1.1 million provision to record a valuation allowance against certain deferred tax assets in a non-U.S. jurisdiction and $0.7 million of interest on unrecognized tax benefits. The income tax expense for the nine months ended October 31, 2015 was primarily due to current income tax liability of $21.0 million, $7.8 million provision to record a valuation allowance against certain deferred tax assets in a non-U.S. jurisdiction and an additional tax provision of $3.1 million related to a $15.4 million payment to the Company’s former Chief Executive Officer. These tax expenses for the nine months ended October 31, 2015 were partially offset by tax benefits of $14.0 million from a net reduction in unrecognized tax benefits, which primarily arose from the expiration of statutes of limitation and the settlement of tax audits in non-U.S. jurisdictions, and true-up adjustments of $4.8 million, primarily related to the filing of tax returns. It is reasonably possible that the amount of unrecognized tax benefits could increase or decrease significantly due to changes in tax law in various jurisdictions, new tax audits and changes in the U.S. dollar as compared to foreign currencies within the next 12 months. Excluding these factors, uncertain tax positions may decrease by as much as $9.5 million from the lapse of statutes of limitation in various jurisdictions during the next 12 months. Government tax authorities from several non-U.S. jurisdictions are also examining the Company’s tax returns. The Company believes that it has adequately provided for any reasonably foreseeable outcomes related to its tax audits and that any settlement will not have a material effect on its results at this time. The Company operates under tax incentives in certain countries that may be extended if certain additional requirements are satisfied. The tax incentives are conditional upon meeting certain employment and investment thresholds. The impact of these tax incentives decreased foreign taxes by $2.4 million and $4.6 million for the three and nine months ended October 29, 2016, respectively, and $1.8 million and $6.7 million for the three and nine months ended October 31, 2015, respectively. The benefit of the tax incentives on net income per share was $0.01 per share for the three and nine months ended October 29, 2016, compared to a benefit of less than $0.01 per share for the three months ended October 31, 2015 and $0.01 per share for the nine months ended October 31, 2015. The Company’s principal source of liquidity as of October 29, 2016 consisted of approximately $1.7 billion of cash, cash equivalents and short-term investments, of which approximately $990 million was held by foreign subsidiaries (outside Bermuda). Approximately $680 million of this amount held by foreign subsidiaries is related to undistributed earnings, most of which have been indefinitely reinvested outside of Bermuda. These funds are primarily held in China, Israel, the United States and Switzerland. The Company plans to use such amounts to fund various activities outside of Bermuda including working capital requirements, capital expenditures for expansion, funding of future acquisitions or other financing activities. If such funds were needed by the parent company in Bermuda or if the amounts were otherwise no longer considered indefinitely reinvested, the Company would incur a tax expense of approximately $210 million.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Oct. 29, 2016
Commitments and Contingencies	Note 10. Commitments and Contingencies Purchase Commitments Under the Company’s manufacturing relationships with its foundry partners, cancellation of all outstanding purchase orders are allowed, but requires payment of all costs and expenses incurred through the date of cancellation. As of October 29, 2016, these foundries had incurred approximately $154.2 million of manufacturing costs and expenses relating to the Company’s outstanding purchase orders. Intellectual Property Indemnification The Company has agreed to indemnify certain customers for claims made against the Company’s products where such claims allege infringement of third party intellectual property rights, including, but not limited to, patents, registered trademarks and/or copyrights. Under the aforementioned indemnification clauses, the Company may be obligated to defend the customer and pay for the damages awarded against the customer as well as the attorneys’ fees and costs under an infringement claim. The Company’s indemnification obligations generally do not expire after termination or expiration of the agreement containing the indemnification obligation. Generally, there are limits on and exceptions to the Company’s potential liability for indemnification. Although historically the Company has not made significant payments under these indemnification obligations, the Company cannot estimate the amount of potential future payments, if any, that it might be required to make as a result of these agreements. The maximum potential amount of any future payments that the Company could be required to make under these indemnification obligations could be significant. Contingencies and Legal Proceedings The Company and certain of its subsidiaries are currently parties to various legal proceedings, including those noted in this section. The legal proceedings and claims described below could result in substantial costs and could divert the attention and resources of the Company’s management. The Company is also engaged in other legal proceedings and claims not described below, which arise in the ordinary course of its business. The Company is currently unable to predict the final outcome of these lawsuits and therefore cannot determine the likelihood of loss or estimate a range of possible loss, except with respect to amounts where it has determined a loss is both probable and estimatable and has made an accrual. As of October 29, 2016, the Company has an accrued litigation balance of $2.8 million related to certain legal proceedings. Litigation is subject to inherent uncertainties and unfavorable rulings could occur. An unfavorable ruling in litigation, particularly patent litigation, could require the Company to pay damages, one-time license fees or ongoing royalty payments, and could prevent the Company from manufacturing or selling some of its products or limit or restrict the type of work that employees involved in such litigation may perform for the Company, any of which could adversely affect financial results in future periods. There can be no assurance that these matters will be resolved in a manner that is not adverse to the Company’s business, financial condition, results of operations or cash flows. Carnegie Mellon University Litigation. Innovatio Litigation. Luna Litigation and Consolidated Cases. On November 18, 2015, the S.D. of New York granted the Company’s motion to transfer the consolidated cases to the N.D. of California. On December 21, 2015, the N.D. of California granted the Company’s motion to deem the consolidated cases related to the Saratoga litigation, discussed below. On February 8, 2016, the N.D. of California granted an unopposed motion to appoint Plumbers and Pipefitters National Pension Fund as Lead Plaintiff. On March 19, 2016, Lead Plaintiff filed a consolidated amended complaint. On April 29, 2016, Marvell and each of the individual defendants each filed motions to dismiss. The hearing on the motions to dismiss took place on July 29, 2016 and the court took the matter under submission. On October 12, 2016, the Court granted Defendants’ motions to dismiss with leave to amend and granted lead plaintiff 30 days to file an amended complaint. The parties agreed that the plaintiffs shall file and serve an amended complaint by November 28, 2016. Plaintiffs filed and served the amended complaint on November 28, 2016. Defendants have until January 16, 2017 to answer, move to dismiss, or otherwise respond to the complaint. Saratoga Litigation. On October 23, 2015, the Company removed the action to the N.D. of California. On December 21, 2015, the N.D. of California denied Saratoga’s motion to remand. On December 21, 2015, the N.D. of California granted the Company’s motion to deem the action related to the consolidated Luna actions, discussed above. On January 22, 2016, the Company filed a motion to dismiss the complaint; on March 25, 2016, the N.D. of California held a hearing on the motion and took the matter under submission. On August 16, 2016, the court granted the Company’s motion and gave plaintiff 30 days leave to amend the complaint, (until September 15, 2016). The parties agreed to a stipulated dismissal, and on September 15, 2016, the case was dismissed with prejudice. Surety Bonds On May 14, 2014, the Company filed a Notice of Appeal to appeal the final judgment issued by the W.D. of Pennsylvania in the CMU litigation. In order to stay the execution of the final judgment pending its appeal, the Company filed a supersedeas bond for $1.54 billion with the W.D. of Pennsylvania in the event the Company did not fully satisfy a final judgment as affirmed after the completion of all appellate proceedings. The bond was issued by a consortium of sureties authorized by the U.S. Treasury. In support of the bond, the Company entered into separate indemnity agreements with each of the sureties to indemnify the sureties from all costs and payments made under the bond. The indemnity agreements did not require collateral to be posted at the time of the issuance of the bond. However, the indemnity agreements provide that each of the sureties have the right to demand to be placed in funds or call for collateral under pre-defined events. On November 14, 2014, the Company filed a second surety bond for $216 million and filed a commitment letter from the sureties to issue up to an additional $95 million in bonding under certain conditions. The second bond and commitment are secured by the Company’s campus located in Santa Clara, California, which has a carrying value of $128.3 million at October 29, 2016. In connection with the settlement that was reached with CMU for a total $750 million in February 2016, the primary supersedeas bond that the Company entered into was reduced to $439 million and the secondary bond was adjusted to $311 million and both were discharged pursuant to an order releasing supersedeas bonds on April 21, 2016. For additional information, see CMU litigation under “Contingencies” above. Indemnities, Commitments and Guarantees During its normal course of business, the Company has made certain indemnities, commitments and guarantees under which it may be required to make payments in relation to certain transactions. These indemnities may include intellectual property indemnities to the Company’s customers in connection with the sales of its products, indemnities for liabilities associated with the infringement of other parties’ technology based upon the Company’s products, indemnities for general commercial obligations, indemnities to various lessors in connection with facility leases for certain claims arising from such facility or lease, and indemnities to directors and officers of the Company to the maximum extent permitted under the laws of Bermuda. In addition, the Company has contractual commitments to various customers, which could require the Company to incur costs to repair an epidemic defect with respect to its products outside of the normal warranty period if such defect were to occur. The duration of these indemnities, commitments and guarantees varies and, in certain cases, is indefinite. Some of these indemnities, commitments and guarantees do not provide for any limitation of the maximum potential future payments that the Company could be obligated to make. In general, the Company does not record any liability for these indemnities, commitments and guarantees in the accompanying consolidated balance sheets as the amounts cannot be reasonably estimated and are not considered probable. The Company does, however, accrue for losses for any known contingent liability, including those that may arise from indemnification provisions, when future payment is probable.

Shareholders' Equity

Shareholders' Equity	9 Months Ended
	Oct. 29, 2016
Shareholders' Equity	Note 11. Shareholders’ Equity Stock Plans Stock option activity under the Company’s stock option and stock incentive plans is included in the following table (in thousands, except per share amounts): Time-Based Options Market-Based Options Total Number of Weighted Average Exercise Price Number of Shares Weighted Exercise Price Number of Weighted Average Exercise Price Balance at January 30, 2016 40,874 $ 13.59 2,156 $ 15.43 43,030 $ 13.68 Granted 2,105 $ 9.99 — $ — 2,105 $ 9.99 Exercised (1,202 ) $ 9.85 — $ — (1,202 ) $ 9.85 Canceled/Forfeited (4,292 ) $ 19.44 (2,156 ) $ 15.43 (6,448 ) $ 18.09 Balance at October 29, 2016 37,485 $ 12.84 — 37,485 $ 12.84 Vested or expected to vest at October 29, 2016 36,155 $ 12.82 Exercisable at October 29, 2016 22,875 $ 12.71 For time-based stock options vested and expected to vest at October 29, 2016, the aggregate intrinsic value was $54.0 million and the weighted average remaining contractual term was 5.5 years. For time-based stock options exercisable at October 29, 2016, the aggregate intrinsic value was $39.3 million and the weighted average remaining contractual term was 4.1 years. The aggregate intrinsic value of stock options exercised during the three months ended October 29, 2016 and October 31, 2015 was $2.9 million and $0.7 million, respectively. The aggregate intrinsic value of stock options exercised during the nine months ended October 29, 2016 and October 31, 2015 was $3.0 million and $9.5 million, respectively. The market-based stock options automatically expired in April 2016 since the market price conditions were not met within the required five years from date of grant. The Company’s closing stock price of $13.10 as reported on the NASDAQ Global Select Market for all in-the-money options as of October 28, 2016 (last trading day of the quarter) was used to calculate the aggregate intrinsic value. As of October 29, 2016, the unamortized compensation expense was $22.0 million for time-based stock options. The unamortized compensation expense for time-based stock options will be amortized on a straight-line basis and is expected to be recognized over a weighted average period of 1.7 years. Activity related to the non-vested portion of the restricted stock units is included in the following table (in thousands, except for share prices): Time-Based Performance-Based Market-Based Total Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Balance at January 30, 2016 8,343 $ 13.57 977 $ 14.43 353 $ 12.24 9,673 $ 13.61 Granted 8,751 $ 9.70 — $ — 554 * $ 11.71 9,305 $ 9.82 Vested (5,367 ) $ 14.00 (155 ) $ 14.15 — $ — (5,522 ) $ 14.00 Canceled/Forfeited (961 ) $ 11.13 (822 ) $ 14.50 (406 ) $ 12.39 (2,189 ) $ 12.63 Balance at October 29, 2016 10,766 $ 10.42 — $ — 501 $ 11.53 11,267 $ 10.47 * Amounts represent the target number of restricted stock units at grant date. For these awards granted to our executive officers, up to 150% of the target restricted stock units may vest if the maximum level for performance objectives is achieved. In August 2016, the Company granted performance-based equity awards to each of its executive officers who recently joined the Company. The Company also granted performance-based equity awards to its Chief Financial Officer in September 2016, when she joined the Company. These equity awards include RSU’s which vest based on the achievement of certain financial goals for which the financial metrics have not yet been approved by the Executive Compensation Committee of the Company’s Board of Directors (“ECC”) and as such, have no grant measurement date for accounting purposes. Therefore, the table presented above excludes the grant of 328,071 shares (based on 100% expected achievement) related to these performance-based RSUs. A portion of the equity awards shall vest based on total shareholder return (each a “Total Shareholder Return Award”). The Total Shareholder Return Awards will vest on the third anniversary of the commencement date based on the achievement of performance objectives relating to relative total shareholder return of the Company’s common shares as compared to that of comparable companies of the Philadelphia Semiconductor Sector Index over performance periods as defined in each award. These Total Shareholder Return Awards are reported in the table presented above as “Market-Based.” Share-based compensation for the Total Shareholder Return Award is measured using the Monte Carlo valuation method since the award is indexed to the price of the Company’s common stock as set forth under the terms of the award. In connection with the performance-based equity awards granted in fiscal 2016 to each of the Company’s executive officers, a total of 33,616 shares vested on April 1, 2016 based on achieving certain individual strategic goals as evaluated by the ECC. No shares vested for the achievement of financial performance goals since the financial performance criteria were below the threshold level. The amount of canceled shares reported in the table above includes the unvested shares that were not earned. The Company recognizes expense from performance-based equity awards when it becomes probable that the performance conditions will be met. Once it becomes probable that a performance-based award will vest, the Company recognizes share-based compensation expense equal to the number of shares expected to vest multiplied by the fair value of the award at the grant date, which is amortized using the accelerated method. The aggregate intrinsic value of restricted stock units expected to vest as of October 29, 2016 was $122.0 million. The number of restricted stock units that are expected to vest is 10.4 million shares. As of October 29, 2016, unamortized compensation expense related to restricted stock units was $75.2 million. The unamortized compensation expense for restricted stock units will be amortized on a straight-line basis and is expected to be recognized over a weighted average period of 1.5 years. Employee Stock Purchase Plan During the three and nine months ended October 29, 2016, the Company issued no shares under the 2000 Employee Stock Purchase Plan, as amended and restated (the “ESPP”) because it was not eligible to issue shares of its common stock due to the delay in the timely filing of its periodic reports with the SEC for the first quarter of fiscal 2017, the year ended January 30, 2016, and the second and third quarters of fiscal 2016. The Company also canceled the June 2016 ESPP purchase and delayed the opening of the new offering period that would have started in June 2016. As a result, the Company refunded $27.2 million of contribution withholdings to its employees and it recorded an additional $6.8 million of share-based compensation expense representing the acceleration of the remaining unamortized compensation expense related to the June 2016 ESPP purchase period. In August 2016, the Company completed the filing of its periodic reports with the SEC and re-opened the ESPP plan. During the three and nine months ended October 31, 2015, a total of 3.2 million shares were issued at a weighted-average price of $11.88 per share under the ESPP. As of October 29, 2016, there was $21.8 million of unrecognized compensation cost related to the ESPP. Share Repurchase Program The Company repurchased 4.4 million of its common shares for $56.5 million during the three and nine months ended October 29, 2016. The Company repurchased 3.7 million of its common shares for $45.6 million in cash during the three months ended October 31, 2015 and 19.7 million of its common shares for $260.9 million during the nine months ended October 31, 2015. The repurchased shares were retired immediately after the repurchases were completed. The Company records all repurchases, as well as investment purchases and sales, based on trade date. As of October 29, 2016, a total of 246.0 million shares have been repurchased to date under the Company’s share repurchase program for a total $3.1 billion in cash and there was $126.1 million remaining available for future share repurchases. Subsequent to the end of the quarter through November 25, 2016, the Company repurchased an additional 0.8 million of its common shares for $10.6 million at an average price per share of $12.86. On November 17, 2016, the Company announced that its Board of Directors authorized a $1 billion share repurchase plan. The newly authorized stock repurchase program replaces in its entirety the prior $3.25 billion stock repurchase program, which had approximately $115 million of repurchase authority remaining as of November 27, 2016. Dividends The Company paid the following cash dividends (in thousands, except per share amounts): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cash dividend per share $ 0.06 $ 0.06 $ 0.18 $ 0.18 Total payment to shareholders $ 30,699 $ 30,270 $ 91,835 $ 92,374 On November 17, 2016, the Company announced that its Board of Directors had declared a cash dividend of $0.06 per share payable on December 28, 2016 to all shareholders of record on December 6, 2016. Future payment of a regular quarterly cash dividend on the Company’s common shares will be subject to, among other things, the best interests of the Company and its shareholders, the Company’s results of operations, cash balances and future cash requirements, financial condition, developments in ongoing litigation, statutory requirements under Bermuda law and other factors that the Company’s board of directors may deem relevant. The Company’s dividend payments may change from time to time, and the Company cannot provide assurance that it will continue to declare dividends at all or in any particular amounts.

Share-Based Compensation

Share-Based Compensation	9 Months Ended
	Oct. 29, 2016
Share-Based Compensation	Note 12. Share-Based Compensation The following table presents details of share-based compensation expenses by functional line item (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cost of goods sold $ 2,225 $ 2,495 $ 6,859 $ 6,054 Research and development 19,998 22,573 72,975 75,162 Selling and marketing 2,958 2,608 9,215 7,892 General and administrative 3,082 3,789 863 12,252 $ 28,263 $ 31,465 $ 89,912 $ 101,360 Share-based compensation capitalized in inventory was $1.2 million at October 29, 2016 and $1.5 million at January 30, 2016. Upon the termination of the employment of certain members of our executive management in April 2016, it was determined that the vesting in certain of their unvested stock awards was not probable. As a result, the Company recorded a $6.9 million reversal of the previously recognized related share-based compensation expense in the nine months ended October 29, 2016. Valuation Assumptions The following weighted average assumptions were used for each respective period to calculate the fair value of each time-based stock option award on the date of grant using the Black-Scholes valuation model: Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Time-based Stock Options: Weighted average fair value $ 3.51 $ 2.82 $ 2.92 $ 3.94 Expected volatility 37 % 43 % 40 % 34 % Expected term (in years) 5.2 5.4 5.2 5.4 Risk-free interest rate 1.2 % 1.5 % 1.3 % 1.6 % Expected dividend yield 1.9 % 2.3 % 2.5 % 1.7 % Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Employee Stock Purchase Plan: Estimated fair value $ 3.89 $ 3.78 $ 3.89 $ 3.78 Volatility 40 % 31 % 40 % 31 % Expected term (in years) 1.1 1.3 1.1 1.3 Risk-free interest rate 0.6 % 0.4 % 0.6 % 0.4 % Dividend yield 2.0 % 1.7 % 2.0 % 1.7 % Nine Months Ended October 29, 2016 Total Shareholder Return Awards: Expected term (in years) 2.9 Expected volatility 36 % Average correlation coefficient of peer companies 0.5 % Risk-free interest rate 0.8 % Expected dividend yield 2.1 % The correlation coefficients are calculated based upon the price date used to calculate the historical volatilities and is used to model the way in which each entity tends to move in relation to its peers.

Carnegie Mellon University Sett

Carnegie Mellon University Settlement	9 Months Ended
	Oct. 29, 2016
Carnegie Mellon University Settlement	Note 13. Carnegie Mellon University Settlement In February 2016, the Company and CMU settled their patent infringement lawsuit pursuant to a court-ordered mediation and entered into a Settlement Agreement and Patent License (the “Agreement”). The parties agreed to mutual release of claims, license and covenant not to sue provisions for which the Company paid an aggregate of $750 million to CMU in the nine months ended October 29, 2016. See CMU litigation under “Note 10 – Commitments and Contingencies” for further information about the lawsuit. The Agreement was accounted for as a multiple-element arrangement and accordingly, a valuation was completed to determine the estimated fair value of each identifiable element. As a result, the Company allocated $654.7 million to the mutual release of claims and covenant not to sue provisions; $81.3 million to the licensing of intellectual property in fiscal 2016; and the remaining $14.0 million representing the future use of the license through April 2018. The $654.7 million for the mutual release of claims and covenant not to sue was recorded in fiscal 2016 as a settlement charge in operating expenses since there is no future benefit. The $81.3 million license fee was recorded in fiscal 2016 as a charge in cost of goods sold for past use of the license. The $14.0 million representing the future use of the license, is to be recognized in cost of goods sold over the remaining term of the license from February 2016 through April 2018. Accordingly, the Company recorded $1.6 million and $4.7 million to cost of goods sold in the three and nine months ended October 29, 2016, respectively.

Changes in the Company's Organi

Changes in the Company's Organization	9 Months Ended
	Oct. 29, 2016
Changes in the Company's Organization	Note 14. Changes in the Company’s Organization In April 2016, the employment of Dr. Sehat Sutardja as Chief Executive Officer and Ms. Weili Dai as President was terminated by the Company’s Board of Directors. The Board of Directors then formed an Interim Office of the Chief Executive and appointed Maya Strelar-Migotti, Executive Vice President of the Smart Networked Devices and Solutions Business Group, and Dr. Pantelis Alexopoulos, Executive Vice President of the Storage Business Group, as Interim Co-Chief Executive Officers. Also in April 2016, the Company announced that it entered into an agreement with Starboard Value LP (“Starboard”), regarding the composition of its Board of Directors. Under the terms of the agreement, the Company elected Peter A. Feld, Richard S. Hill, Oleg Khaykin, Michael Strachan and Robert Switz to serve on its board. The agreement specifies that the Board would recommend and the Company would support and solicit proxies only for the election at the 2016 annual general meeting of Messrs. Feld, Hill, Khaykin, Murphy, Strachan and Switz and the four independent directors serving on the Board immediately prior to the execution of the agreement, Dr. Juergen Gromer, Dr. John G. Kassakian, Arturo Krueger and Dr. Randhir Thakur. In May 2016, Mr. Hill replaced Dr. Sutardja as the Chairman of the Board. In June 2016, the Board of Directors appointed Matthew J. Murphy to serve as the Company’s President and Chief Executive Officer, effective July 11, 2016. Mr. Murphy also joined the Board of Directors on July 11, 2016. Ms. Strelar-Migotti and Dr. Alexopoulos returned to their roles as Executive Vice Presidents of the Company effective upon Mr. Murphy’s commencement of employment. Upon the commencement of Mr. Murphy’s employment, the Board subsequently appointed Richard S. Hill, the Chairman of the Board, as the Company’s Interim Principal Executive Officer, to serve in that capacity until the Company files its Quarterly Report on Form 10-Q for the second quarter of fiscal 2017 (“Q217 Form 10-Q”). Mr. Murphy assumed the role of the Company’s principal executive officer immediately following the filing of the Q217 Form 10-Q. In August 2016, the Company announced the appointment of Jean Hu as Chief Financial Officer effective August 22, 2016. David P. Eichler, the Company’s Interim Chief Financial Officer and principal financial officer, ceased serving as the Company’s principal financial officer upon Ms. Hu’s appointment as Chief Financial Officer. In September 2016, Dr. Zining Wu, the Company’s Chief Technical Officer, left the Company. On October 3, 2016, the Company announced the appointment of David Caron as Chief Accounting Officer and Controller, effective immediately. At the Company’s Annual General Meeting of Shareholders held on November 8, 2016 (the “Annual Meeting”), shareholders whose shares were present either in person or by proxy voted upon the election of directors to the Board of Directors. The shareholders elected the following directors to serve until the next annual general meeting of shareholders: Peter Feld; Richard Hill; Oleg Khaykin; Matthew Murphy; Michael Strachan; Robert Switz; and Randhir Thakur. Immediately following the Annual Meeting, the terms of directors Dr. Sehat Sutardja, Weili Dai, Dr. Juergen Groemer, Dr. John Kassakian and Arturo Krueger expired. On November 15, 2016, the Board of Directors appointed Dr. Thakur to serve on the Audit Committee of the Board of Directors, effective immediately.

Subsequent Event

Subsequent Event	9 Months Ended
	Oct. 29, 2016
Subsequent Event	Note 15. Subsequent Event In November 2016, the Company announced a plan to restructure its operations to refocus its research and development, increase operational efficiency and improve profitability. The Company expects that the restructuring actions, which include discontinuing investment in specific research and development programs, streamlining engineering processes, and consolidating research and development sites, will eliminate approximately 900 positions worldwide. In addition, the Company plans to divest certain non-strategic businesses. These actions will begin immediately and are expected to be fully executed by the end of October 2017. As a result of these actions, the Company expects to incur charges of $90 million to $110 million over the next four fiscal quarters, including cash charges of $35 million to $50 million. Restructuring and restructuring-related charges include an estimate of severance, asset impairment, lease termination fees and other costs.

The Company and Basis of Pres22

The Company and Basis of Presentation (Policies)	9 Months Ended
	Oct. 29, 2016
Basis of Presentation	Basis of Presentation The Company’s fiscal year is the 52- or 53-week period ending on the Saturday closest to January 31. Accordingly, every fifth or sixth fiscal year will have a 53-week period. The additional week in a 53-week year is added to the fourth quarter, making such quarter consist of 14 weeks. Fiscal 2017 and 2016 each have a 52-week period. The next 53-week year will be fiscal 2018. The unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for annual financial statements. In the opinion of management, all adjustments consisting of normal and recurring entries considered necessary for a fair statement of the results for the interim periods have been included in the Company’s unaudited condensed consolidated balance sheet as of October 29, 2016, the results of its operations for the three and nine months ended October 29, 2016 and October 31, 2015, its comprehensive income (loss) for the three and nine months ended October 29, 2016 and October 31, 2015, and its cash flows for the nine months ended October 29, 2016 and October 31, 2015. The January 30, 2016 condensed consolidated balance sheet data was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 30, 2016, but does not include all disclosures required for annual periods. These condensed consolidated financial statements and related notes are unaudited and should be read in conjunction with the Company’s audited financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 30, 2016 as filed on July 21, 2016 with the Securities and Exchange Commission (“SEC”). The results of operations for the three and nine months ended October 29, 2016 are not necessarily indicative of the results that may be expected for any other interim period or for the full fiscal year.
Use of Estimates	Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent liabilities. On an ongoing basis, the Company evaluates its estimates, including those related to performance-based compensation, revenue recognition, provisions for sales returns and allowances, inventory excess and obsolescence, investment fair values, goodwill and other intangible assets, restructuring, income taxes, litigation and other contingencies. In addition, the Company uses assumptions when employing the Monte Carlo simulation and Black-Scholes valuation models to calculate the fair value of share-based awards that are granted. Actual results could differ from these estimates, and such differences could affect the results of operations reported in future periods.
Principles of Consolidation	Principles of Consolidation The unaudited condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated. The functional currency of the Company and its subsidiaries is the U.S. dollar.
Accounting Pronouncements Recently Adopted	Accounting Pronouncements Recently Adopted In April 2015, the Financial Accounting Standards Board issued new guidance to help entities evaluate the accounting for fees paid by a customer in a cloud computing arrangement, which the Company adopted beginning in the first quarter of fiscal 2017. The guidance provides a basis for evaluating whether a cloud computing arrangement includes a software license and whether the license arrangement should be accounted for as an intangible asset. This guidance also strikes from previous authoritative guidance, the use by analogy to the accounting for capital leases, which the Company previously applied in the accounting for certain of its technology license agreements. As such, the Company accounts for new agreements under the new guidance by determining if capitalization as an asset is appropriate or if the arrangement should be treated as a subscription with expense recognized in the period when service is received. Similarly, the Company will re-evaluate the accounting for any renewals to existing license agreements in accordance with the new guidance as they occur.
Accounting Pronouncements Not Yet Effective	Accounting Pronouncements Not Yet Effective In August 2016, the FASB issued an accounting standards update to add or clarify guidance on the classification of certain cash receipts and cash payments in the statement of cash flows. The amendments in the update provide guidance on eight specific cash flow issues, and is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The amendments to the guidance should be applied using a retrospective transition method for each period presented and if it is impracticable to apply all of the amendments retrospectively for some of the issues, the amendments for those issues would be applied prospectively as of the earliest date practicable. The Company is evaluating the effect this new guidance will have on its consolidated statement of cash flows. In October 2016, the FASB issued new guidance which simplifies the accounting for the income tax effects of intra-entity transfers and will require companies to recognize the income tax effects of intra-entity transfers of assets other than inventory when the transfer occurs. Previous guidance required companies to defer the income tax effects of intra-entity transfers of assets until the asset had been sold to an outside party or otherwise recognized. The guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect this new guidance will have on its consolidated financial statements. In November 2016, the FASB issued new guidance which requires entities to include in their cash and cash-equivalent balances in the statement of cash flows those amounts that are deemed to be restricted cash and restricted cash equivalents. As a result, companies will no longer present transfers between cash and cash equivalents, and restricted cash and restricted cash equivalents in the statement of cash flows. The guidance is effective for annual and interim periods beginning after December 15, 2017. Early adoption is permitted, including adoption in an interim period. The Company is evaluating the effect this new guidance will have on its consolidated financial statements.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Available-for-sale Securities Reconciliation	The following tables summarize the Company’s investments (in thousands): October 29, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 487,067 $ 1,968 $ (289 ) $ 488,746 U.S. government and agency debt 165,538 86 (64 ) 165,560 Asset backed securities 50,909 82 (16 ) 50,975 Foreign government and agency debt 11,925 — (17 ) 11,908 Municipal debt securities 31,610 5 (20 ) 31,595 Held-to-maturity: Time deposits 150,000 — — 150,000 Total short-term investments 897,049 2,141 (406 ) 898,784 Long-term investments: Available-for-sale: Auction rate securities 8,974 — — 8,974 Total long-term investments 8,974 — — 8,974 Total investments $ 906,023 $ 2,141 $ (406 ) $ 907,758 January 30, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 558,337 $ 766 $ (1,282 ) $ 557,821 U.S. government and agency debt 317,595 64 (254 ) 317,405 Asset backed securities 76,711 81 (56 ) 76,736 Foreign government and agency debt 21,370 2 (14 ) 21,358 Municipal debt securities 31,211 45 (7 ) 31,249 Total short-term investments 1,005,224 958 (1,613 ) 1,004,569 Long-term investments: Available-for-sale: Auction rate securities 11,296 — — 11,296 Total long-term investments 11,296 — — 11,296 Total investments $ 1,016,520 $ 958 $ (1,613 ) $ 1,015,865
Gross Realized Gains and Losses on Sales of Available-for-Sale Securities	Gross realized gains and gross realized losses on sales of available-for-sale securities are presented in the following tables (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Gross realized gains $ 298 $ 524 $ 966 $ 1,222 Gross realized losses (46 ) (877 ) (289 ) (1,214 ) Total net realized gains (losses) $ 252 $ (353 ) $ 677 $ 8
Investments Classified by Contractual Maturity Date	The contractual maturities of available-for-sale securities are presented in the following tables (in thousands): October 29, 2016 January 30, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 390,731 $ 390,776 $ 304,117 $ 304,035 Due between one and five years 498,071 499,767 689,847 689,279 Due over five years 17,221 17,215 22,556 22,551 $ 906,023 $ 907,758 $ 1,016,520 $ 1,015,865
Unrealized Loss Position Investments	For individual securities that have been in a continuous unrealized loss position, the fair value and gross unrealized loss for these securities aggregated by investment category and length of time in an unrealized position are presented in the following tables (in thousands): October 29, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Corporate debt securities $ 116,138 $ (234 ) $ 21,515 $ (55 ) $ 137,653 $ (289 ) U.S. government and agency debt 58,482 (60 ) 6,995 (4 ) 65,477 (64 ) Asset backed securities 5,698 (8 ) 5,994 (8 ) 11,692 (16 ) Foreign government and agency debt 8,509 (15 ) 1,501 (2 ) 10,010 (17 ) Municipal debt securities 18,340 (18 ) 998 (2 ) 19,338 (20 ) Total securities $ 207,167 $ (335 ) $ 37,003 $ (71 ) $ 244,170 $ (406 ) January 30, 2016 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Corporate debt securities $ 283,138 $ (1,237 ) $ 14,383 $ (45 ) $ 297,521 $ (1,282 ) U.S. government and agency debt 263,325 (254 ) — — 263,325 (254 ) Asset backed securities 46,646 (56 ) — — 46,646 (56 ) Foreign government and agency debt 16,458 (14 ) — — 16,458 (14 ) Municipal debt securities 2,943 (5 ) 1,571 (2 ) 4,514 (7 ) Total securities $ 612,510 $ (1,566 ) $ 15,954 $ (47 ) $ 628,464 $ (1,613 )

Supplemental Financial Inform24

Supplemental Financial Information (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Inventories	October 29, January 30, 2016 2016 Inventories: Work-in-process $ 117,624 $ 131,471 Finished goods 81,219 78,546 Total inventories $ 198,843 $ 210,017
Schedule of Property, Plant and Equipment, Net	October 29, January 30, 2016 2016 Property and equipment, net: Machinery and equipment $ 598,781 $ 578,627 Buildings 144,320 144,320 Computer software 99,668 102,928 Land 53,373 53,373 Building improvements 49,970 49,927 Leasehold improvements 50,194 50,192 Furniture and fixtures 24,261 27,119 Construction in progress 4,580 1,353 1,025,147 1,007,839 Less: Accumulated depreciation and amortization (759,163 ) (708,299 ) Total property and equipment, net $ 265,984 $ 299,540
Schedule of Other Non-current Assets	October 29, January 30, 2016 2016 Other non-current assets: Technology and other licenses $ 61,479 $ 48,770 Deferred tax assets 36,727 34,505 Investments in privately-held companies 5,530 5,804 Prepaid land use rights 12,888 13,123 Deposits 48,771 51,512 Other 13,673 10,996 Total other non-current assets $ 179,068 $ 164,710
Schedule of Accrued Liabilities	October 29, January 30, 2016 2016 Accrued liabilities: Accrued rebates $ 30,091 $ 41,320 Accrued royalties 16,181 16,217 Technology license obligations 25,842 17,985 Accrued legal expense 7,401 9,761 Accrued litigation 2,750 3,830 Other 42,024 42,947 Total accrued liabilities $ 124,289 $ 132,060
Schedule of Deferred Income	October 29, January 30, 2016 2016 Deferred income: Deferred revenue $ 89,095 $ 77,935 Deferred cost of goods sold (25,439 ) (22,213 ) Deferred income $ 63,656 $ 55,722
Schedule of Other Non-current Liabilities	October 29, January 30, 2016 2016 Other non-current liabilities: Technology license obligations $ 17,420 $ 12,461 Long-term accrued employee compensation 6,504 6,078 Other 6,257 8,424 Other non-current liabilities $ 30,181 $ 26,963
Changes in Accumulated Other Comprehensive Income (Loss) by Components	The changes in accumulated other comprehensive income (loss) by components are presented in the following tables (in thousands): Unrealized Gain Unrealized Gain Unrealized Gain Total Balance at January 30, 2016 $ (656 ) $ — $ (139 ) $ (795 ) Other comprehensive income before reclassifications 2,868 — 479 3,347 Amounts reclassified from accumulated other comprehensive loss (477 ) — (522 ) (999 ) Other comprehensive income (loss), net of tax 2,391 — (43 ) 2,348 Balance at October 29, 2016 $ 1,735 $ — $ (182 ) $ 1,553 Unrealized Gain Unrealized Gain Unrealized Gain Total Balance at January 31, 2015 $ 3,768 $ (2,274 ) $ (1,186 ) $ 308 Other comprehensive income (loss) before reclassifications (3,360 ) (44 ) 1,296 (2,108 ) Amounts reclassified from accumulated other comprehensive income (loss) (449 ) — 67 (382 ) Other comprehensive income (loss), net of tax (3,809 ) (44 ) 1,363 (2,490 ) Balance at October 31, 2015 $ (41 ) $ (2,318 ) $ 177 $ (2,182 )
Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) by Components	The amounts reclassified from accumulated other comprehensive income (loss) by components are presented in the following table (in thousands): Three Months Ended Nine Months Ended Affected Line Item in the October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Interest and other income, net: Available-for-sale securities: Marketable securities $ 415 $ (4 ) $ 477 $ 449 Operating costs and expenses: Cash flow hedges: Research and development 118 545 457 (68 ) Selling and marketing 3 6 10 (57 ) General and administrative 14 51 55 58 Total $ 550 $ 598 $ 999 $ 382
Schedule of Interest and Other Income, Net	Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Interest and other income, net: Interest income $ 3,370 $ 3,932 $ 10,005 $ 11,980 Net realized gain (loss) on investments 252 (353 ) 677 8 Currency translation gain 944 1,134 1,961 5,035 Other income 986 86 896 145 Interest expense (82 ) (155 ) (297 ) (567 ) $ 5,470 $ 4,644 $ 13,242 $ 16,601
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	The computations of basic and diluted net income (loss) per share are presented in the following table (in thousands, except per share amounts): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, Numerator: Net income (loss) $ 72,616 $ (57,750 ) $ 101,242 $ (815,600 ) Denominator: Weighted average shares — basic 511,090 504,831 510,373 512,476 Effect of dilutive securities: Share-based awards 11,001 — 6,103 — Weighted average shares — diluted 522,091 504,831 516,476 512,476 Net income (loss) per share: Basic $ 0.14 $ (0.11 ) $ 0.20 $ (1.59 ) Diluted $ 0.14 $ (0.11 ) $ 0.20 $ (1.59 )
Anti-dilutive Potential Shares	Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, Weighted average shares outstanding: Share-based awards 20,211 68,613 37,309 62,825

Derivative Financial Instrume25

Derivative Financial Instruments (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Derivative Instruments	The notional amounts of outstanding forward contracts were as follows (in thousands): Buy Contracts October 29, January 30, 2016 2016 Israeli shekel $ 36,641 $ 19,082
Information about Gains (Losses) Associated with Derivative Financial Instruments	The following table provides information about gains (losses) associated with the Company’s derivative financial instruments (in thousands): Amount of Gains (Losses) in Statement of Operations Three Months Ended Nine Months Ended Location of Gains (Losses) October 29, October 31, October 29, October 31, in Statement of Operations 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Forward contracts: Research and development $ 242 $ 116 $ 693 $ (460 ) Selling and marketing 4 2 14 (6 ) General and administrative 29 11 82 (34 ) $ 275 $ 129 $ 789 $ (500 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Oct. 29, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis	The tables below set forth, by level, the Company’s assets and liabilities that are measured at fair value on a recurring basis. The tables do not include assets and liabilities that are measured at historical cost or any basis other than fair value (in thousands): Fair Value Measurements at October 29, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 63,191 $ — $ — $ 63,191 Time deposits — 34,459 — 34,459 Municipal debt securities — 8,740 — 8,740 Corporate debt securities — 30,529 — 30,529 Short-term investments: U.S. government and agency debt 165,560 — — 165,560 Corporate debt securities — 488,746 — 488,746 Asset backed securities — 50,975 — 50,975 Foreign government and agency debt — 11,908 — 11,908 Municipal debt securities — 31,595 — 31,595 Time deposits — 150,000 — 150,000 Prepaid expenses and other current assets: Foreign currency forward contracts — 11 — 11 Long-term investments: Auction rate securities — — 8,974 8,974 Other non-current assets: Severance pay fund — 707 — 707 Total assets $ 228,751 $ 807,670 $ 8,974 $ 1,045,395 Liabilities Accrued liabilities: Foreign currency forward contracts $ — $ 257 $ — $ 257 Fair Value Measurements at January 30, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 160,400 $ — $ — $ 160,400 Time deposits — 209,405 — 209,405 U.S. government and agency debt 184,374 — — 184,374 Corporate debt securities — 54,689 — 54,689 Short-term investments: U.S. government and agency debt 317,405 — — 317,405 Corporate debt securities — 557,821 — 557,821 Asset backed securities — 76,736 — 76,736 Foreign government and agency debt — 21,358 — 21,358 Municipal debt securities — 31,249 — 31,249 Prepaid expenses and other current assets: Foreign currency forward contracts — 30 — 30 Long-term investments: Auction rate securities — — 11,296 11,296 Other non-current assets: Severance pay fund — 678 — 678 Total assets $ 662,179 $ 951,966 $ 11,296 $ 1,625,441 Liabilities Accrued liabilities: Foreign currency forward contracts $ — $ 195 $ — $ 195
Summary of Change in Fair Values for Level Three Assets	The following table summarizes the change in fair value for Level 3 assets (in thousands): Nine Months Ended October 29, October 31, 2016 2015 Beginning balance $ 11,296 $ 10,226 Sales and redemptions (2,322 ) — Unrealized losses included in accumulated other comprehensive income — (44 ) Ending balance $ 8,974 $ 10,182

Acquired Intangible Assets, N27

Acquired Intangible Assets, Net (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Finite-Lived Intangible Assets by Major Class	The carrying amounts of acquired intangible assets, net, are as follows (in thousands): October 29, 2016 January 30, 2016 Range of Gross Accumulated Write-Offs Net Gross Accumulated Write-Offs Net Purchased and core technology 4 - 8 years $ 35,498 $ (26,574 ) $ 8,924 $ 35,498 $ (21,910 ) $ 13,588 Customer intangibles 5 - 7 years 28,600 (28,190 ) 410 28,600 (24,178 ) 4,422 Total intangible assets, net $ 64,098 $ (54,764 ) $ 9,334 $ 64,098 $ (46,088 ) $ 18,010
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Based on the identified intangible assets recorded at October 29, 2016, the future amortization expense for the next five fiscal years is as follows (in thousands): Fiscal Year Remainder of fiscal 2017 $ 1,966 2018 5,508 2019 1,860 2020 and thereafter — $ 9,334

Restructuring and Other Relat28

Restructuring and Other Related Charges (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Restructuring Reserve by Type of Cost	The following table provides a summary of restructuring and other related charges as presented in the unaudited condensed consolidated statements of operations (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cost of goods sold $ — $ 10,285 $ — $ 10,285 Restructuring and other related charges 1,164 35,270 6,326 48,862 $ 1,164 $ 45,555 $ 6,326 $ 59,147 The following table presents details of charges recorded by the Company related to the restructuring actions described below (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Severance and related costs $ — $ 28,773 $ 15 $ 40,478 Facilities and related costs 108 657 4,585 882 Other exit-related costs — 1,855 — 2,044 108 31,285 4,600 43,404 Release of reserves: Severance — — (86 ) — Other exit-related — — (269 ) — Impairment and write-off of assets: Inventory — 8,046 — 8,046 Technology license — 1,250 — 1,250 Equipment and other 1,056 4,974 2,081 6,447 Restructuring and other related charges $ 1,164 $ 45,555 $ 6,326 $ 59,147
Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs	The following table sets forth a reconciliation of the beginning and ending restructuring liability balances by each major type of costs associated with the restructuring charges (in thousands): Severance Facilities Other and Related and Related Exit-Related Costs Costs Costs Total Balance at January 30, 2016 $ 1,155 $ 1,043 $ 1,644 $ 3,842 Restructuring charges 15 4,585 — 4,600 Net cash payments (969 ) (4,606 ) (200 ) (5,775 ) Release of reserves (86 ) — (269 ) (355 ) Exchange rate adjustment 3 57 — 60 Balance at October 29, 2016 $ 118 $ 1,079 $ 1,175 $ 2,372

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	9 Months Ended
	Oct. 29, 2016
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award	Stock option activity under the Company’s stock option and stock incentive plans is included in the following table (in thousands, except per share amounts): Time-Based Options Market-Based Options Total Number of Weighted Average Exercise Price Number of Shares Weighted Exercise Price Number of Weighted Average Exercise Price Balance at January 30, 2016 40,874 $ 13.59 2,156 $ 15.43 43,030 $ 13.68 Granted 2,105 $ 9.99 — $ — 2,105 $ 9.99 Exercised (1,202 ) $ 9.85 — $ — (1,202 ) $ 9.85 Canceled/Forfeited (4,292 ) $ 19.44 (2,156 ) $ 15.43 (6,448 ) $ 18.09 Balance at October 29, 2016 37,485 $ 12.84 — 37,485 $ 12.84 Vested or expected to vest at October 29, 2016 36,155 $ 12.82 Exercisable at October 29, 2016 22,875 $ 12.71
Schedule of Nonvested Share Activity	Activity related to the non-vested portion of the restricted stock units is included in the following table (in thousands, except for share prices): Time-Based Performance-Based Market-Based Total Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Number of Weighted Grant Date Fair Value Balance at January 30, 2016 8,343 $ 13.57 977 $ 14.43 353 $ 12.24 9,673 $ 13.61 Granted 8,751 $ 9.70 — $ — 554 * $ 11.71 9,305 $ 9.82 Vested (5,367 ) $ 14.00 (155 ) $ 14.15 — $ — (5,522 ) $ 14.00 Canceled/Forfeited (961 ) $ 11.13 (822 ) $ 14.50 (406 ) $ 12.39 (2,189 ) $ 12.63 Balance at October 29, 2016 10,766 $ 10.42 — $ — 501 $ 11.53 11,267 $ 10.47 * Amounts represent the target number of restricted stock units at grant date. For these awards granted to our executive officers, up to 150% of the target restricted stock units may vest if the maximum level for performance objectives is achieved.
Schedule of Cash Dividends	The Company paid the following cash dividends (in thousands, except per share amounts): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cash dividend per share $ 0.06 $ 0.06 $ 0.18 $ 0.18 Total payment to shareholders $ 30,699 $ 30,270 $ 91,835 $ 92,374

Share-Based Compensation (Table

Share-Based Compensation (Tables)	9 Months Ended
	Oct. 29, 2016
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table presents details of share-based compensation expenses by functional line item (in thousands): Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Cost of goods sold $ 2,225 $ 2,495 $ 6,859 $ 6,054 Research and development 19,998 22,573 72,975 75,162 Selling and marketing 2,958 2,608 9,215 7,892 General and administrative 3,082 3,789 863 12,252 $ 28,263 $ 31,465 $ 89,912 $ 101,360
Employee Stock Purchase Plan
Weighted Average Assumptions Used to Calculate Fair Value Awards	Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Employee Stock Purchase Plan: Estimated fair value $ 3.89 $ 3.78 $ 3.89 $ 3.78 Volatility 40 % 31 % 40 % 31 % Expected term (in years) 1.1 1.3 1.1 1.3 Risk-free interest rate 0.6 % 0.4 % 0.6 % 0.4 % Dividend yield 2.0 % 1.7 % 2.0 % 1.7 %
Time Based Option Award
Weighted Average Assumptions Used to Calculate Fair Value Awards	The following weighted average assumptions were used for each respective period to calculate the fair value of each time-based stock option award on the date of grant using the Black-Scholes valuation model: Three Months Ended Nine Months Ended October 29, October 31, October 29, October 31, 2016 2015 2016 2015 Time-based Stock Options: Weighted average fair value $ 3.51 $ 2.82 $ 2.92 $ 3.94 Expected volatility 37 % 43 % 40 % 34 % Expected term (in years) 5.2 5.4 5.2 5.4 Risk-free interest rate 1.2 % 1.5 % 1.3 % 1.6 % Expected dividend yield 1.9 % 2.3 % 2.5 % 1.7 %
Total Shareholder Return Awards
Weighted Average Assumptions Used to Calculate Fair Value Awards	Nine Months Ended October 29, 2016 Total Shareholder Return Awards: Expected term (in years) 2.9 Expected volatility 36 % Average correlation coefficient of peer companies 0.5 % Risk-free interest rate 0.8 % Expected dividend yield 2.1 %

Summary of Investments (Detail)

Summary of Investments (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	$ 906,023	$ 1,016,520
Available-for-sale securities, Gross Unrealized Gains		958
Available-for-sale securities, Gross Unrealized Losses		(1,613)
Available-for-sale securities, Estimated Fair Value	907,758	1,015,865
Total investments, amortized cost	906,023
Total investments Gross Unrealized Gains	2,141
Total investments Gross Unrealized Losses	(406)
Total investments Estimated Fair Value	907,758
Short-term Investments
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost		1,005,224
Available-for-sale securities, Gross Unrealized Gains		958
Available-for-sale securities, Gross Unrealized Losses		(1,613)
Available-for-sale securities, Estimated Fair Value		1,004,569
Total Amortized Cost	897,049
Total Gross Unrealized Gains	2,141
Total Gross Unrealized Losses	(406)
Total Estimated Fair Value	898,784
Short-term Investments | Time deposits
Gain (Loss) on Investments [Line Items]
Held-to-maturity securities, Amortized Cost	150,000
Held-to-maturity securities, Gross Unrealized Gains	0
Held-to-maturity securities, Gross Unrealized Losses	0
Held-to-maturity securities, Estimated Fair Value	150,000
Short-term Investments | Corporate debt securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	487,067	558,337
Available-for-sale securities, Gross Unrealized Gains	1,968	766
Available-for-sale securities, Gross Unrealized Losses	(289)	(1,282)
Available-for-sale securities, Estimated Fair Value	488,746	557,821
Short-term Investments | U.S. government and agency debt
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	165,538	317,595
Available-for-sale securities, Gross Unrealized Gains	86	64
Available-for-sale securities, Gross Unrealized Losses	(64)	(254)
Available-for-sale securities, Estimated Fair Value	165,560	317,405
Short-term Investments | Asset-backed securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	50,909	76,711
Available-for-sale securities, Gross Unrealized Gains	82	81
Available-for-sale securities, Gross Unrealized Losses	(16)	(56)
Available-for-sale securities, Estimated Fair Value	50,975	76,736
Short-term Investments | Foreign government and agency debt
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	11,925	21,370
Available-for-sale securities, Gross Unrealized Gains		2
Available-for-sale securities, Gross Unrealized Losses	(17)	(14)
Available-for-sale securities, Estimated Fair Value	11,908	21,358
Short-term Investments | Municipal Debt Securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	31,610	31,211
Available-for-sale securities, Gross Unrealized Gains	5	45
Available-for-sale securities, Gross Unrealized Losses	(20)	(7)
Available-for-sale securities, Estimated Fair Value	31,595	31,249
Long-term investments
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	8,974	11,296
Available-for-sale securities, Estimated Fair Value	8,974	11,296
Long-term investments | Auction rate securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	8,974	11,296
Available-for-sale securities, Estimated Fair Value	$ 8,974	$ 11,296

Investments - Additional Inform

Investments - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Gain (Loss) on Investments [Line Items]
Impairment loss			$ 0
Proceeds from sales of available for sale securities			458,744,000	$ 544,515,000
Available for sale securities, net realized gain	$ 252,000	$ (353,000)	677,000	$ 8,000
Long-term investments
Gain (Loss) on Investments [Line Items]
Auction rate securities, aggregate par value	10,000,000		10,000,000
Long-term investments | Auction rate securities
Gain (Loss) on Investments [Line Items]
Available for sale securities, sold at par value			2,500,000
Proceeds from sales of available for sale securities			2,400,000
Carrying value of available for sale securities after previous written down	$ 2,300,000		2,300,000
Available for sale securities, net realized gain			$ 100,000

Gross Realized Gains and Losses

Gross Realized Gains and Losses on Sales of Available-for-Sale Securities (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	$ 298	$ 524	$ 966	$ 1,222
Gross realized losses	(46)	(877)	(289)	(1,214)
Total net realized gains (losses)	$ 252	$ (353)	$ 677	$ 8

Contractual Maturities of Avail

Contractual Maturities of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Amortized Cost
Due in one year or less	$ 390,731	$ 304,117
Due between one and five years	498,071	689,847
Due over five years	17,221	22,556
Available-for-sale securities, Amortized Cost	906,023	1,016,520
Estimated Fair Value
Due in one year or less	390,776	304,035
Due between one and five years	499,767	689,279
Due over five years	17,215	22,551
Available-for-sale securities, Estimated Fair Value	$ 907,758	$ 1,015,865

Summary of Investments Gross Un

Summary of Investments Gross Unrealized Losses and Fair Value (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 207,167	$ 612,510
Less than 12 months Unrealized Losses	(335)	(1,566)
12 months or more Fair Value	37,003	15,954
12 months or more Unrealized Losses	(71)	(47)
Total Fair Value	244,170	628,464
Total Unrealized Losses	(406)	(1,613)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	116,138	283,138
Less than 12 months Unrealized Losses	(234)	(1,237)
12 months or more Fair Value	21,515	14,383
12 months or more Unrealized Losses	(55)	(45)
Total Fair Value	137,653	297,521
Total Unrealized Losses	(289)	(1,282)
U.S. government and agency debt
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	58,482	263,325
Less than 12 months Unrealized Losses	(60)	(254)
12 months or more Fair Value	6,995
12 months or more Unrealized Losses	(4)
Total Fair Value	65,477	263,325
Total Unrealized Losses	(64)	(254)
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	5,698	46,646
Less than 12 months Unrealized Losses	(8)	(56)
12 months or more Fair Value	5,994
12 months or more Unrealized Losses	(8)
Total Fair Value	11,692	46,646
Total Unrealized Losses	(16)	(56)
Foreign government and agency debt
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	8,509	16,458
Less than 12 months Unrealized Losses	(15)	(14)
12 months or more Fair Value	1,501
12 months or more Unrealized Losses	(2)
Total Fair Value	10,010	16,458
Total Unrealized Losses	(17)	(14)
Municipal Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	18,340	2,943
Less than 12 months Unrealized Losses	(18)	(5)
12 months or more Fair Value	998	1,571
12 months or more Unrealized Losses	(2)	(2)
Total Fair Value	19,338	4,514
Total Unrealized Losses	$ (20)	$ (7)

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Inventory [Line Items]
Work-in-process	$ 117,624	$ 131,471
Finished goods	81,219	78,546
Total inventories	$ 198,843	$ 210,017

Supplemental Financial Inform37

Supplemental Financial Information - Additional Information (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Additional Financial Information [Line Items]
Inventories	$ 198,843	$ 210,017
Third-party Logistics Providers
Additional Financial Information [Line Items]
Inventories	$ 23,500	$ 21,000

Property and Equipment, Net (De

Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,025,147	$ 1,007,839
Less: Accumulated depreciation and amortization	(759,163)	(708,299)
Total property and equipment, net	265,984	299,540
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	598,781	578,627
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	144,320	144,320
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	99,668	102,928
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	53,373	53,373
Building improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	49,970	49,927
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	50,194	50,192
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,261	27,119
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,580	$ 1,353

Other Non-current Assets (Detai

Other Non-current Assets (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Other non-current assets:
Technology and other licenses	$ 61,479	$ 48,770
Deferred tax assets	36,727	34,505
Investments in privately-held companies	5,530	5,804
Prepaid land use rights	12,888	13,123
Deposits	48,771	51,512
Other	13,673	10,996
Total other non-current assets	$ 179,068	$ 164,710

Accrued Liabilities (Detail)

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Accrued liabilities:
Accrued rebates	$ 30,091	$ 41,320
Accrued royalties	16,181	16,217
Technology license obligations	25,842	17,985
Accrued legal expense	7,401	9,761
Accrued litigation	2,750	3,830
Other	42,024	42,947
Total accrued liabilities	$ 124,289	$ 132,060

Deferred Income (Detail)

Deferred Income (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 89,095	$ 77,935
Deferred cost of goods sold	(25,439)	(22,213)
Deferred income	$ 63,656	$ 55,722

Other Non-current Liabilities (

Other Non-current Liabilities (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Other non-current liabilities:
Technology license obligations	$ 17,420	$ 12,461
Long-term accrued employee compensation	6,504	6,078
Other	6,257	8,424
Other non-current liabilities	$ 30,181	$ 26,963

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss) by Components (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 4,140,123
Other comprehensive income (loss), net of tax	$ (2,462)	$ (904)	2,348	$ (2,490)
Ending Balance	4,180,494		4,180,494
Unrealized Gain (Loss) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(656)	3,768
Other comprehensive income (loss) before reclassifications			2,868	(3,360)
Amounts reclassified from accumulated other comprehensive income (loss)			(477)	(449)
Other comprehensive income (loss), net of tax			2,391	(3,809)
Ending Balance	1,735	(41)	1,735	(41)
Unrealized Gain (Loss) on Auction Rate Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(2,274)
Other comprehensive income (loss) before reclassifications				(44)
Other comprehensive income (loss), net of tax				(44)
Ending Balance		(2,318)		(2,318)
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(139)	(1,186)
Other comprehensive income (loss) before reclassifications			479	1,296
Amounts reclassified from accumulated other comprehensive income (loss)			(522)	67
Other comprehensive income (loss), net of tax			(43)	1,363
Ending Balance	(182)	177	(182)	177
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(795)	308
Other comprehensive income (loss) before reclassifications			3,347	(2,108)
Amounts reclassified from accumulated other comprehensive income (loss)			(999)	(382)
Other comprehensive income (loss), net of tax			2,348	(2,490)
Ending Balance	$ 1,553	$ (2,182)	$ 1,553	$ (2,182)

Amounts Reclassified from Accum

Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) by Components (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other income, net	$ 5,470	$ 4,644	$ 13,242	$ 16,601
Research and development	(222,463)	(252,502)	(691,812)	(818,257)
Selling and marketing	(30,576)	(30,582)	(93,022)	(97,597)
General and administrative	(28,904)	(33,206)	(97,049)	(108,884)
Net income (loss)	72,616	(57,750)	101,242	(815,600)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	550	598	999	382
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Marketable Securities
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other income, net	415	(4)	477	449
Reclassification out of Accumulated Other Comprehensive Income | Unrealized Gain (Loss) on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Research and development	118	545	457	(68)
Selling and marketing	3	6	10	(57)
General and administrative	$ 14	$ 51	$ 55	$ 58

Interest and Other Income, Net

Interest and Other Income, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Interest and other income, net:
Interest income	$ 3,370	$ 3,932	$ 10,005	$ 11,980
Net realized gain (loss) on investments	252	(353)	677	8
Currency translation gain	944	1,134	1,961	5,035
Other income	986	86	896	145
Interest expense	(82)	(155)	(297)	(567)
Interest and other income, net	$ 5,470	$ 4,644	$ 13,242	$ 16,601

Computations of Basic and Dilut

Computations of Basic and Diluted Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Numerator:
Net income (loss)	$ 72,616	$ (57,750)	$ 101,242	$ (815,600)
Denominator:
Weighted average shares - basic	511,090	504,831	510,373	512,476
Effect of dilutive securities:
Share-based awards	11,001		6,103
Weighted average shares - diluted	522,091	504,831	516,476	512,476
Basic	$ 0.14	$ (0.11)	$ 0.20	$ (1.59)
Diluted	$ 0.14	$ (0.11)	$ 0.20	$ (1.59)

Anti-dilutive Potential Shares

Anti-dilutive Potential Shares (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Weighted average shares outstanding:
Share-based awards	20,211	68,613	37,309	62,825

Notional Amounts of Outstanding

Notional Amounts of Outstanding Foreign Currency Forward Contracts (Detail) - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Foreign Exchange Buy Contracts | Israeli shekel
Derivative [Line Items]
Derivative, notional amount	$ 36,641	$ 19,082

Information about Gains (Losses

Information about Gains (Losses) Associated with Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	$ 275	$ 129	$ 789	$ (500)
Cash flow hedges | Foreign currency forward contracts | Research and development
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	242	116	693	(460)
Cash flow hedges | Foreign currency forward contracts | Selling and marketing
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	4	2	14	(6)
Cash flow hedges | Foreign currency forward contracts | General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	$ 29	$ 11	$ 82	$ (34)

Derivative Financial Instrume50

Derivative Financial Instruments - Additional Information (Detail)	9 Months Ended
	Oct. 29, 2016USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cash flow hedges were terminated as a result of forecasted transactions that did not occur	$ 0

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015
Fair Value, Measurement Inputs, Disclosure [Line Items]
Percentage of total amount of assets measured using Level 3 valuation methodologies to total assets	0.20%
Fair value, assets, level 1 to level 2 transfers, amount	$ 0	$ 0
Fair value, assets, level 2 to level 1 transfers, amount	0	0
Fair value, assets, transfers into Level 3	0	0
Fair value, assets, transfers out of Level 3	$ 0	$ 0

Assets and Liabilities that are

Assets and Liabilities that are Measured at Fair Value on a Recurring Basis (Detail) - Items measured at fair value - USD ($) $ in Thousands	Oct. 29, 2016	Jan. 30, 2016
Assets
Total assets	$ 1,045,395	$ 1,625,441
Other non-current assets | Severance Pay Fund
Assets
Other non-current asset	707	678
Foreign currency forward contracts
Liabilities
Accrued liabilities	257	195
Foreign currency forward contracts | Prepaid expenses and other current assets
Assets
Prepaid expenses and other current assets	11	30
Cash equivalents | U.S. government and agency debt
Assets
Cash equivalents		184,374
Cash equivalents | Money market funds
Assets
Cash equivalents	63,191	160,400
Cash equivalents | Time deposits
Assets
Cash equivalents	34,459	209,405
Cash equivalents | Municipal Debt Securities
Assets
Cash equivalents	8,740
Cash equivalents | Corporate debt securities
Assets
Cash equivalents	30,529	54,689
Short-term Investments | U.S. government and agency debt
Assets
Investments	165,560	317,405
Short-term Investments | Time deposits
Assets
Investments	150,000
Short-term Investments | Municipal Debt Securities
Assets
Investments	31,595	31,249
Short-term Investments | Corporate debt securities
Assets
Investments	488,746	557,821
Short-term Investments | Asset-backed securities
Assets
Investments	50,975	76,736
Short-term Investments | Foreign government and agency debt
Assets
Investments	11,908	21,358
Long-term investments | Auction rate securities
Assets
Investments	8,974	11,296
Level 1
Assets
Total assets	228,751	662,179
Level 1 | Cash equivalents | U.S. government and agency debt
Assets
Cash equivalents		184,374
Level 1 | Cash equivalents | Money market funds
Assets
Cash equivalents	63,191	160,400
Level 1 | Short-term Investments | U.S. government and agency debt
Assets
Investments	165,560	317,405
Level 2
Assets
Total assets	807,670	951,966
Level 2 | Other non-current assets | Severance Pay Fund
Assets
Other non-current asset	707	678
Level 2 | Foreign currency forward contracts
Liabilities
Accrued liabilities	257	195
Level 2 | Foreign currency forward contracts | Prepaid expenses and other current assets
Assets
Prepaid expenses and other current assets	11	30
Level 2 | Cash equivalents | Time deposits
Assets
Cash equivalents	34,459	209,405
Level 2 | Cash equivalents | Municipal Debt Securities
Assets
Cash equivalents	8,740
Level 2 | Cash equivalents | Corporate debt securities
Assets
Cash equivalents	30,529	54,689
Level 2 | Short-term Investments | Time deposits
Assets
Investments	150,000
Level 2 | Short-term Investments | Municipal Debt Securities
Assets
Investments	31,595	31,249
Level 2 | Short-term Investments | Corporate debt securities
Assets
Investments	488,746	557,821
Level 2 | Short-term Investments | Asset-backed securities
Assets
Investments	50,975	76,736
Level 2 | Short-term Investments | Foreign government and agency debt
Assets
Investments	11,908	21,358
Level 3
Assets
Total assets	8,974	11,296
Level 3 | Long-term investments | Auction rate securities
Assets
Investments	$ 8,974	$ 11,296

Change in Fair Values for Level

Change in Fair Values for Level Three Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 11,296	$ 10,226
Sales and redemptions	(2,322)
Unrealized losses included in accumulated other comprehensive income		(44)
Ending balance	$ 8,974	$ 10,182

Acquired Intangible Assets Net

Acquired Intangible Assets Net (Detail) - USD ($) $ in Thousands	9 Months Ended
	Oct. 29, 2016	Jan. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 64,098	$ 64,098
Accumulated Amortization and Write-Offs	(54,764)	(46,088)
Net Carrying Amount	9,334	18,010
Purchased and core technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts, Finite-Lived	35,498	35,498
Accumulated Amortization and Write-Offs	(26,574)	(21,910)
Net Carrying Amounts, Finite-Lived	8,924	13,588
Customer intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts, Finite-Lived	28,600	28,600
Accumulated Amortization and Write-Offs	(28,190)	(24,178)
Net Carrying Amounts, Finite-Lived	$ 410	$ 4,422
Minimum | Purchased and core technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Lives	4 years
Minimum | Customer intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Lives	5 years
Maximum | Purchased and core technology
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Lives	8 years
Maximum | Customer intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Useful Lives	7 years

Future Amortization Expense (De

Future Amortization Expense (Detail) - In Process Research and Development Excluded $ in Thousands	Oct. 29, 2016USD ($)
Fiscal Year
Remainder of fiscal 2017	$ 1,966
2,018	5,508
2,019	1,860
2020 and thereafter	0
Net Carrying Amounts, Finite-Lived	$ 9,334

Summary of Restructuring and Ot

Summary of Restructuring and Other Related Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 4,600
Restructuring and other related charges	$ 1,164	$ 35,270	6,326	$ 48,862
Severance and related costs		28,773	15	40,478
Facilities and related costs	108	657	4,585	882
Other exit-related costs		1,855		2,044
Restructuring Costs, Total	108	31,285	4,600	43,404
Impairment and write-off of assets: Inventory		8,046		8,046
Impairment and write-off of assets: Equipment and other	1,056	4,974	2,081	6,447
Restructuring and other related charges	$ 1,164	45,555	6,326	59,147
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Restructuring charges		10,285		10,285
Technology License
Restructuring Cost and Reserve [Line Items]
Impairment and write-off of assets: Intangible assets		$ 1,250		$ 1,250
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			15
Release of reserves			(86)
Other Exit-Related Costs
Restructuring Cost and Reserve [Line Items]
Release of reserves			$ (269)

Restructuring and Other Relat57

Restructuring and Other Related Charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges	$ 1,164	$ 45,555	$ 6,326	$ 59,147
Restructuring charges			4,600
Cumulative restructuring charges	46,400		46,400
Facilities and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			4,585
Cumulative restructuring charges	200		200
Facilities and Related Costs | Mobile and Wireless
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,100		1,900
Severance benefits
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring charges	28,100		28,100
Loss on early contract termination
Restructuring Cost and Reserve [Line Items]
Release of restructuring reserves			300
Cumulative restructuring charges	1,300		1,300
Impairment of technology licenses and certain equipment
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring charges	8,800		8,800
Write down of inventory
Restructuring Cost and Reserve [Line Items]
Cumulative restructuring charges	$ 8,000		8,000
Facility in Israel | Facilities and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 4,300

Reconciliation of Beginning and

Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs (Detail) $ in Thousands	9 Months Ended
	Oct. 29, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	$ 3,842
Restructuring charges	4,600
Net cash payments	(5,775)
Release of reserves	(355)
Exchange rate adjustment	60
Restructuring liabilities, ending balance	2,372
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	1,155
Restructuring charges	15
Net cash payments	(969)
Release of reserves	(86)
Exchange rate adjustment	3
Restructuring liabilities, ending balance	118
Facilities and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	1,043
Restructuring charges	4,585
Net cash payments	(4,606)
Exchange rate adjustment	57
Restructuring liabilities, ending balance	1,079
Other Exit-Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	1,644
Net cash payments	(200)
Release of reserves	(269)
Restructuring liabilities, ending balance	$ 1,175

Income Tax - Additional Informa

Income Tax - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Income Taxes [Line Items]
Current income tax (benefit) liability	$ 12.4	$ 1.5	$ 16.9	$ 21
Expense related to settlements of prior year tax				4.8
Net increase (decrease) in unrecognized tax benefits	2.8	(0.7)	(9.7)	(14)
Unrecognized tax benefit, interest and penalties accrued	0.5		2
Unrecognized tax benefit, accrual for prior year tax positions	2.3		2.6
Deferred tax expense (benefit)			(2.5)
Reduction in unrecognized tax benefits arising from the expiration of statute of limitations			14.3
Additional tax provision				3.1
Uncertain tax positions decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months	(9.5)		(9.5)
Tax incentives, tax savings amount	2.4	1.8	4.6	6.7
Cash, cash equivalents and short-term investments	1,700		1,700
Undistributed earnings of foreign subsidiaries	680		680
Non-U.S. Jurisdiction
Income Taxes [Line Items]
Expense related to settlements of prior year tax	$ 0.6		$ 0.6
Deferred tax assets valuation allowance		1.1		1.1
Non-U.S. Jurisdiction | Aggregate [Member]
Income Taxes [Line Items]
Deferred tax assets valuation allowance		$ 7.8		7.8
Maximum
Income Taxes [Line Items]
Tax incentives, per share effect on earning	$ 0.01	$ 0.01	$ 0.01
Chief Executive Officer
Income Taxes [Line Items]
Liability to related party		$ 15.4		$ 15.4
Foreign Subsidiaries
Income Taxes [Line Items]
Additional tax provision			$ 210
Cash, cash equivalents and short-term investments	$ 990		$ 990

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Feb. 16, 2016	Dec. 26, 2012	Oct. 29, 2016	Nov. 14, 2014
Commitments and Contingencies Disclosure [Line Items]
Accrued liability related to legal proceedings			$ 2.8
Actions taken by court			On August 16, 2016, the court granted the Company's motion and gave plaintiff 30 days leave to amend the complaint, (until September 15, 2016)
Carrying value of pledged assets			$ 128.3
Carnegie Mellon Litigation
Commitments and Contingencies Disclosure [Line Items]
Date of lawsuit filed			Mar. 6, 2009
Loss contingency, awarded amount		$ 1,170	$ 1,540
Amount agreed to pay pursuant to settlement			750
Settlement Agreement and Patent License
Commitments and Contingencies Disclosure [Line Items]
Amount agreed to pay pursuant to settlement	$ 750
Primary Surety Bond
Commitments and Contingencies Disclosure [Line Items]
Bond	439
Secondary Surety Bond
Commitments and Contingencies Disclosure [Line Items]
Bond	$ 311
Surety Bond
Commitments and Contingencies Disclosure [Line Items]
Bond			1,540	$ 216
Commitment Letter
Commitments and Contingencies Disclosure [Line Items]
Bond				$ 95
Manufacturing Expense
Commitments and Contingencies Disclosure [Line Items]
Purchase commitment, outstanding commitment			$ 154.2

Stock Option Plan Activity (Det

Stock Option Plan Activity (Detail) shares in Thousands	9 Months Ended
	Oct. 29, 2016$ / sharesshares
Options Outstanding
Beginning Balance | shares	43,030
Granted | shares	2,105
Exercised | shares	(1,202)
Canceled/Forfeited | shares	(6,448)
Ending Balance | shares	37,485
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 13.68
Granted | $ / shares	9.99
Exercised | $ / shares	9.85
Canceled/Forfeited | $ / shares	18.09
Ending Balance | $ / shares	$ 12.84
Time Based Option Award
Options Outstanding
Beginning Balance | shares	40,874
Granted | shares	2,105
Exercised | shares	(1,202)
Canceled/Forfeited | shares	(4,292)
Ending Balance | shares	37,485
Vested or expected to vest at October 29, 2016 | shares	36,155
Exercisable at October 29, 2016 | shares	22,875
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 13.59
Granted | $ / shares	9.99
Exercised | $ / shares	9.85
Canceled/Forfeited | $ / shares	19.44
Ending Balance | $ / shares	12.84
Vested or expected to vest at October 29, 2016 | $ / shares	12.82
Exercisable at October 29, 2016 | $ / shares	$ 12.71
Market Based Option Award
Options Outstanding
Beginning Balance | shares	2,156
Canceled/Forfeited | shares	(2,156)
Weighted Average Exercise Price
Beginning Balance | $ / shares	$ 15.43
Canceled/Forfeited | $ / shares	$ 15.43

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($)	Nov. 17, 2016	Apr. 01, 2016	Nov. 25, 2016	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Stockholders Equity Note [Line Items]
Closing stock price				$ 13.10		$ 13.10
Employee stock purchase plan, shares issued					3,200,000		3,200,000
Employee stock purchase plan, weighted average price					$ 11.88		$ 11.88
Share repurchase program, shares repurchased				4,400,000	3,700,000	4,400,000	19,700,000
Share repurchase program, amount repurchased				$ 56,500,000	$ 45,600,000	$ 56,500,000	$ 260,900,000
Share repurchase program, cumulative shares repurchased				246,000,000		246,000,000
Share repurchase program, total amount of repurchases				$ 3,100,000,000		$ 3,100,000,000
Share repurchase program, remaining available for future share repurchases				$ 126,100,000		$ 126,100,000
Dividend per share, declared				$ 0.06	$ 0.06	$ 0.18	$ 0.18
Subsequent Event
Stockholders Equity Note [Line Items]
Share repurchase program, remaining available for future share repurchases	$ 115,000,000
Repurchase of common stock			$ 800,000
Repurchase of common stock (In Shares)			10,600,000
Average repurchase price per share			$ 12.86
Stock repurchase program,number of shares authorized to be repurchase	1,000,000,000
Stock repurchase program,authorized amount	$ 3,250,000,000
Dividend per share, declared	$ 0.06
Dividends declared, date to be paid	Dec. 28, 2016
Dividends declared, date of record	Dec. 6, 2016
Time Based Option Award
Stockholders Equity Note [Line Items]
Options vested and expected to vest, aggregate intrinsic value				$ 54,000,000		$ 54,000,000
Options vested and expected to vest, weighted average remaining contractual term (in years)						5 years 6 months
Options exercisable, aggregate intrinsic value				39,300,000		$ 39,300,000
Options exercisable, weighted average remaining contractual term (in years)						4 years 1 month 6 days
Aggregate intrinsic value of stock options exercised				2,900,000	$ 700,000	$ 3,000,000	$ 9,500,000
Unrecognized share based compensation cost				$ 22,000,000		$ 22,000,000
Unrecognized share based compensation cost, weighted-average period of recognition						1 year 8 months 12 days
Employee stock purchase plan, weighted average price				$ 3.51	$ 2.82	$ 2.92	$ 3.94
Performance Based Restricted Stock Unit
Stockholders Equity Note [Line Items]
Granted				328,071
Percentage of expected achievement				100.00%
Vested						155,000
Performance Based Restricted Stock Unit | Executive Officer
Stockholders Equity Note [Line Items]
Vested		33,616
Restricted Stock Units (RSUs)
Stockholders Equity Note [Line Items]
Unrecognized share based compensation cost				$ 75,200,000		$ 75,200,000
Unrecognized share based compensation cost, weighted-average period of recognition						1 year 6 months
Granted						9,305,000
Vested						5,522,000
Restricted stock units, aggregate intrinsic value				$ 122,000,000		$ 122,000,000
Restricted stock units vested and expected to vest				10,400,000		10,400,000
Market Based Option Award
Stockholders Equity Note [Line Items]
Stock option expiration date						Apr. 30, 2016
Stock option, expiration term						5 years
Employee Stock Purchase Plan, 2000 Restated Plan
Stockholders Equity Note [Line Items]
Unrecognized share based compensation cost				$ 21,800,000		$ 21,800,000
Refunded contribution amount						27,200,000
Share based compensation expense						$ 6,800,000

Activity Related to Non Vested

Activity Related to Non Vested Portion of Restricted Stock Units (Detail) - $ / shares		3 Months Ended	9 Months Ended
		Oct. 29, 2016	Oct. 29, 2016
Time Based Restricted Units
Restricted Stock Units Outstanding
Beginning Balance			8,343,000
Granted			8,751,000
Vested			(5,367,000)
Canceled/Forfeited			(961,000)
Ending Balance		10,766,000	10,766,000
Weighted Average Grant Date Fair Value
Beginning Balance			$ 13.57
Granted			9.70
Vested			14
Canceled/Forfeited			11.13
Ending Balance		$ 10.42	$ 10.42
Performance Based Restricted Stock Unit
Restricted Stock Units Outstanding
Beginning Balance			977,000
Granted		328,071
Vested			(155,000)
Canceled/Forfeited			(822,000)
Weighted Average Grant Date Fair Value
Beginning Balance			$ 14.43
Vested			14.15
Canceled/Forfeited			$ 14.50
Market Based Restricted Stock Unit
Restricted Stock Units Outstanding
Beginning Balance			353,000
Granted	[1]		554,000
Canceled/Forfeited			(406,000)
Ending Balance		501,000	501,000
Weighted Average Grant Date Fair Value
Beginning Balance			$ 12.24
Granted			11.71
Canceled/Forfeited			12.39
Ending Balance		$ 11.53	$ 11.53
Restricted Stock Units (RSUs)
Restricted Stock Units Outstanding
Beginning Balance			9,673,000
Granted			9,305,000
Vested			(5,522,000)
Canceled/Forfeited			(2,189,000)
Ending Balance		11,267,000	11,267,000
Weighted Average Grant Date Fair Value
Beginning Balance			$ 13.61
Granted			9.82
Vested			14
Canceled/Forfeited			12.63
Ending Balance		$ 10.47	$ 10.47
[1]	Amounts represent the target number of restricted stock units at grant date. For these awards granted to our executive officers, up to 150% of the target restricted stock units may vest if the maximum level for performance objectives is achieved.

Activity Related to Non Veste64

Activity Related to Non Vested Portion of Restricted Stock Units (Parenthetical) (Detail)	9 Months Ended
	Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock unit vested	150.00%

Schedule of Cash Dividends (Det

Schedule of Cash Dividends (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Cash dividend
Cash dividend per share	$ 0.06	$ 0.06	$ 0.18	$ 0.18
Total payment to shareholders	$ 30,699	$ 30,270	$ 91,835	$ 92,374

Total Stock Compensation by Exp

Total Stock Compensation by Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 28,263	$ 31,465	$ 89,912	$ 101,360
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	2,225	2,495	6,859	6,054
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	19,998	22,573	72,975	75,162
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	2,958	2,608	9,215	7,892
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 3,082	$ 3,789	$ 863	$ 12,252

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended
	Oct. 29, 2016	Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation capitalized in inventory	$ 1.2	$ 1.5
Reversal of previously recognized share-based compensation expense	$ 6.9

Weighted Average Assumptions Us

Weighted Average Assumptions Used to Calculate Fair Value of Time Based Stock Option Award (Detail) - $ / shares	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value		$ 11.88		$ 11.88
Time Based Option Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value	$ 3.51	$ 2.82	$ 2.92	$ 3.94
Expected volatility	37.00%	43.00%	40.00%	34.00%
Expected term (in years)	5 years 2 months 12 days	5 years 4 months 24 days	5 years 2 months 12 days	5 years 4 months 24 days
Risk-free interest rate	1.20%	1.50%	1.30%	1.60%
Expected dividend yield	1.90%	2.30%	2.50%	1.70%

Weighted Average Assumptions 69

Weighted Average Assumptions Used to Calculate Fair Value Awards for Employee Stock Purchase Plan (Detail) - $ / shares	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value		$ 11.88		$ 11.88
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated fair value	$ 3.89	$ 3.78	$ 3.89	$ 3.78
Volatility	40.00%	31.00%	40.00%	31.00%
Expected term (in years)	1 year 1 month 6 days	1 year 3 months 18 days	1 year 1 month 6 days	1 year 3 months 18 days
Risk-free interest rate	0.60%	0.40%	0.60%	0.40%
Dividend yield	2.00%	1.70%	2.00%	1.70%

Weighted Average Assumptions 70

Weighted Average Assumptions Used to Calculate Fair Value Awards of Total Shareholder Return Awards (Detail) - Total Shareholder Return Awards	9 Months Ended
	Oct. 29, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)	2 years 10 months 24 days
Expected volatility	36.00%
Average correlation coefficient of peer companies	0.50%
Risk-free interest rate	0.80%
Expected dividend yield	2.10%

Carnegie Mellon University Se71

Carnegie Mellon University Settlement - Additional Information (Detail) - Carnegie Mellon Litigation - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 29, 2016	Oct. 29, 2016
Loss Contingencies [Line Items]
Litigation settlement, amount		$ 750
Cost of goods sold
Loss Contingencies [Line Items]
Litigation settlement, amount	$ 1.6	4.7
Mutual release of claims and covenant not to sue provisions
Loss Contingencies [Line Items]
Litigation settlement, amount		654.7
Mutual release of claims and covenant not to sue provisions | Operating Expense
Loss Contingencies [Line Items]
Litigation settlement, amount		654.7
Licensing of intellectual property
Loss Contingencies [Line Items]
Litigation settlement, amount		81.3
Licensing of intellectual property | Cost of goods sold
Loss Contingencies [Line Items]
Litigation settlement, amount		81.3
Future license settlement
Loss Contingencies [Line Items]
Litigation settlement, amount		$ 14
License expiration period		From February 2016 through April 2018
Future license settlement | Cost of Goods Sold for Past Use
Loss Contingencies [Line Items]
Litigation settlement, amount		$ 14

Changes in the Company's Orga72

Changes in the Company's Organization - Additional Information (Detail)	9 Months Ended
	Oct. 29, 2016Director
Reorganization [Line Items]
Number of independent directors	4

Subsequent Events - Additional

Subsequent Events - Additional Information (Detail)	1 Months Ended	9 Months Ended	12 Months Ended
	Nov. 30, 2016Employee	Oct. 29, 2016USD ($)	Oct. 28, 2017USD ($)
Subsequent Event [Line Items]
Restructuring charges, cash		$ 5,775,000
Scenario, Forecast | Minimum
Subsequent Event [Line Items]
Expected restructuring cost			$ 90,000,000
Restructuring charges, cash			35,000,000
Scenario, Forecast | Maximum
Subsequent Event [Line Items]
Expected restructuring cost			110,000,000
Restructuring charges, cash			$ 50,000,000
Subsequent Event
Subsequent Event [Line Items]
Number of position eliminated | Employee	900