Marvell Technology 10-Q8 Sep 162017 Q2 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares shares in Millions	6 Months Ended
Document and Entity Information - shares shares in Millions	Jul. 30, 2016	Aug. 26, 2016
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jul. 30, 2016
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
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		511.7

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Current assets:
Cash and cash equivalents	$ 718,752	$ 1,278,180
Short-term investments	905,257	1,004,569
Accounts receivable, net	348,683	323,300
Inventories	202,717	210,017
Prepaid expenses and other current assets	54,870	102,560
Total current assets	2,230,279	2,918,626
Property and equipment, net	274,774	299,540
Long-term investments	8,974	11,296
Goodwill	2,029,945	2,029,945
Acquired intangible assets, net	12,118	18,010
Other non-current assets	160,586	164,710
Total assets	4,716,676	5,442,127
Current liabilities:
Accounts payable	212,950	180,372
Accrued liabilities	112,976	132,060
Carnegie Mellon University accrued litigation settlement		736,000
Accrued employee compensation	106,513	121,631
Deferred income	72,049	55,722
Total current liabilities	504,488	1,225,785
Non-current income taxes payable	35,817	49,256
Other non-current liabilities	17,283	26,963
Total liabilities	557,588	1,302,004
Commitments and contingencies (Note 10)
Shareholders' equity:
Common shares, $0.002 par value	1,022	1,015
Additional paid-in capital	3,075,579	3,028,921
Accumulated other comprehensive income (loss)	4,015	(795)
Retained earnings	1,078,472	1,110,982
Total shareholders' equity	4,159,088	4,140,123
Total liabilities and shareholders' equity	$ 4,716,676	$ 5,442,127

CONDENSED CONSOLIDATED BALANCE3

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Jul. 30, 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		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Net revenue	$ 626,404	$ 710,492	$ 1,167,226	$ 1,434,780
Operating costs and expenses:
Cost of goods sold	287,608	461,719	546,818	812,872
Research and development	228,891	285,641	469,349	565,755
Selling and marketing	31,067	30,841	62,446	67,015
General and administrative	36,150	35,243	68,145	75,678
Carnegie Mellon University litigation settlement		654,667		654,667
Restructuring and other related charges	721	13,000	5,162	13,592
Amortization of acquired intangible assets	2,461	2,568	4,922	5,136
Total operating costs and expenses	586,898	1,483,679	1,156,842	2,194,715
Operating income (loss)	39,506	(773,187)	10,384	(759,935)
Interest and other income, net	6,284	6,790	7,772	11,957
Income (loss) before income taxes	45,790	(766,397)	18,156	(747,978)
Provision (benefit) for income taxes	(5,515)	5,543	(10,470)	9,872
Net income (loss)	$ 51,305	$ (771,940)	$ 28,626	$ (757,850)
Net income (loss) per share:
Basic	$ 0.10	$ (1.49)	$ 0.06	$ (1.47)
Diluted	$ 0.10	$ (1.49)	$ 0.06	$ (1.47)
Weighted average shares:
Basic	511,235	516,368	510,014	516,298
Diluted	514,314	516,368	513,669	516,298
Cash dividend declared per share	$ 0.06	$ 0.06	$ 0.12	$ 0.12

CONDENSED CONSOLIDATED STATEME5

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Net income (loss)	$ 51,305	$ (771,940)	$ 28,626	$ (757,850)
Other comprehensive income (loss), net of tax:
Net change in unrealized gain (loss) on marketable securities	1,976	(1,458)	4,409	(3,318)
Net change in unrealized gain (loss) on auction rate securities		12		(103)
Net change in unrealized gain (loss) on cash flow hedges	(183)	88	401	1,835
Other comprehensive income (loss), net of tax	1,793	(1,358)	4,810	(1,586)
Comprehensive income (loss), net of tax	$ 53,098	$ (773,298)	$ 33,436	$ (759,436)

CONDENSED CONSOLIDATED STATEME6

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015
Cash flows from operating activities:
Net income (loss)	$ 28,626	$ (757,850)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	53,980	51,811
Share-based compensation	61,649	69,895
Amortization of acquired intangible assets	5,892	6,106
Non-cash restructuring and related charges	1,025	1,473
Other non-cash expense, net	1,950	1,721
Excess tax benefits from share-based compensation	(5)	(25)
Changes in assets and liabilities:
Accounts receivable	(25,383)	3,234
Inventories	7,234	(18,415)
Prepaid expenses and other assets	(9,035)	11,328
Accounts payable	40,359	11,958
Accrued liabilities and other non-current liabilities	(30,243)	8,058
Carnegie Mellon University accrued litigation settlement	(736,000)	733,557
Accrued employee compensation	(15,118)	(28,931)
Deferred income	16,327	(8,468)
Net cash provided by (used in) operating activities	(598,742)	85,452
Cash flows from investing activities:
Purchases of available-for-sale securities	(203,723)	(566,365)
Sales of available-for-sale securities	339,837	301,896
Maturities of available-for-sale securities	146,728	167,894
Distribution from privately-held companies		208
Purchase of time deposits	(125,000)
Purchases of technology licenses	(8,045)	(5,677)
Purchases of property and equipment	(24,377)	(24,320)
Purchase of equipment previously leased		(10,240)
Net cash provided by (used in) investing activities	125,420	(136,604)
Cash flows from financing activities:
Repurchase of common stock		(195,584)
Proceeds from employee stock plans	559	57,174
Minimum tax withholding paid on behalf of employees for net share settlement	(15,382)	(23,007)
Dividend payments to shareholders	(61,136)	(62,104)
Payments on technology license obligations	(10,152)	(8,799)
Excess tax benefits from share-based compensation	5	25
Net cash used in financing activities	(86,106)	(232,295)
Net decrease in cash and cash equivalents	(559,428)	(283,447)
Cash and cash equivalents at beginning of period	1,278,180	1,210,977
Cash and cash equivalents at end of period	$ 718,752	$ 927,530

The Company and Basis of Presen

The Company and Basis of Presentation	6 Months Ended
The Company and Basis of Presentation	Jul. 30, 2016
The Company and Basis of Presentation	Note 1. The Company and Basis of Presentation The Company Marvell Technology Group Ltd., a Bermuda company, and its subsidiaries (the “Company”), is a fabless semiconductor provider of high-performance application-specific standard products. The Company’s core strength of expertise 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 stand alone 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. In a 52-week year, each fiscal quarter consists of 13 weeks. 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 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 July 30, 2016, the results of its operations for the three and six months ended July 30, 2016 and August 1, 2015, its comprehensive income (loss) for the three and six months ended July 30, 2016 and August 1, 2015, and its cash flows for the six months ended July 30, 2016 and August 1, 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. The results of operations for the three and six months ended July 30, 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 assets and 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	6 Months Ended
Recent Accounting Pronouncements	Jul. 30, 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 was effective for the Company 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 applied in the accounting for certain of its technology license agreements. As such, the Company will account for any new agreements on a prospective basis in accordance with the new guidance and will re-evaluate the accounting for any renewals to existing license agreements. 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.

Investments

Investments	6 Months Ended
Investments	Jul. 30, 2016
Investments	Note 3. Investments The following tables summarize the Company’s investments (in thousands): July 30, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 475,483 $ 3,519 $ (154 ) $ 478,848 U.S. government and agency debt 206,056 273 (53 ) 206,276 Asset backed securities 51,489 132 (13 ) 51,608 Foreign government and agency debt 14,603 14 (2 ) 14,615 Municipal debt securities 28,873 41 (4 ) 28,910 Held-to-maturity: Time deposits 125,000 — — 125,000 Total short-term investments 901,504 3,979 (226 ) 905,257 Long-term investments: Available-for-sale: Auction rate securities 8,974 — — 8,974 Total long-term investments 8,974 — — 8,974 Total investments $ 910,478 $ 3,979 $ (226 ) $ 914,231 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 July 30, 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 July 30, 2016, the Company determined there was no further impairment of these auction rate securities. In the six months ended July 30, 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 in the six months ended July 30, 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Gross realized gains $ 280 $ 255 $ 668 $ 698 Gross realized losses (19 ) (230 ) (243 ) (337 ) Total net realized gains $ 261 $ 25 $ 425 $ 361 The contractual maturities of available-for-sale securities are presented in the following tables (in thousands): July 30, 2016 January 30, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 355,835 $ 355,931 $ 304,117 $ 304,035 Due between one and five years 538,247 541,894 689,847 689,279 Due over five years 16,396 16,406 22,556 22,551 $ 910,478 $ 914,231 $ 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): July 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 $ 57,734 $ (75 ) $ 20,946 $ (79 ) $ 78,680 $ (154 ) U.S. government and agency debt 60,760 (46 ) 6,993 (7 ) 67,753 (53 ) Asset backed securities 7,003 (6 ) 3,994 (7 ) 10,997 (13 ) Foreign government and agency debt 4,411 (2 ) — — 4,411 (2 ) Municipal debt securities 1,296 (1 ) 1,497 (3 ) 2,793 (4 ) Total securities $ 131,204 $ (130 ) $ 33,430 $ (96 ) $ 164,634 $ (226 ) 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	6 Months Ended
Supplemental Financial Information	Jul. 30, 2016
Supplemental Financial Information	Note 4. Supplemental Financial Information (in thousands) Consolidated Balance Sheets July 30, January 30, 2016 2016 Inventories: Work-in-process $ 129,460 $ 131,471 Finished goods 73,257 78,546 Total inventories $ 202,717 $ 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 $24.3 million and $21.0 million at July 30, 2016 and January 30, 2016, respectively. July 30, January 30, 2016 2016 Property and equipment, net: Machinery and equipment $ 587,919 $ 578,627 Buildings 144,320 144,320 Computer software 99,016 102,928 Land 53,373 53,373 Building improvements 49,947 49,927 Leasehold improvements 50,151 50,192 Furniture and fixtures 24,233 27,119 Construction in progress 3,448 1,353 1,012,407 1,007,839 Less: Accumulated depreciation and amortization (737,633 ) (708,299 ) Total property and equipment, net $ 274,774 $ 299,540 July 30, January 30, 2016 2016 Other non-current assets: Technology and other licenses $ 40,874 $ 48,770 Deferred tax assets 36,928 34,505 Investments in privately-held companies 5,804 5,804 Prepaid land use rights 12,966 13,123 Deposits 50,351 51,512 Other 13,663 10,996 Total other non-current assets $ 160,586 $ 164,710 July 30, January 30, 2016 2016 Accrued liabilities: Accrued rebates $ 24,387 $ 41,320 Accrued royalties 16,361 16,217 Technology license obligations 16,753 17,985 Accrued legal expense 9,105 9,761 Accrued litigation 3,235 3,830 Other 43,135 42,947 Total accrued liabilities $ 112,976 $ 132,060 July 30, January 30, 2016 2016 Deferred income: Deferred revenue $ 102,212 $ 77,935 Deferred cost of goods sold (30,163 ) (22,213 ) Deferred income $ 72,049 $ 55,722 Deferred income at July 30, 2016 includes deferred revenue and cost of goods sold arising from shipments to a direct customer based on a firm purchase order. However, the Company determined that the revenue recognition criteria was not met because there was a contract amendment that changed the pricing terms and it was not signed until August 2016. The Company will recognize revenue of $15.6 million related to these shipments in the third quarter of fiscal 2017. July 30, January 30, 2016 2016 Other non-current liabilities: Technology license obligations $ 4,539 $ 12,461 Long-term accrued employee compensation 6,363 6,078 Other 6,381 8,424 Other non-current liabilities $ 17,283 $ 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 4,471 — 788 5,259 Amounts reclassified from accumulated other comprehensive loss (62 ) — (387 ) (449 ) Other comprehensive income, net of tax 4,409 — 401 4,810 Balance at July 30, 2016 $ 3,753 $ — $ 262 $ 4,015 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 (2,865 ) (103 ) 1,166 (1,802 ) Amounts reclassified from accumulated other comprehensive income (loss) (453 ) — 669 216 Other comprehensive income (loss), net of tax (3,318 ) (103 ) 1,835 (1,586 ) Balance at August 1, 2015 $ 450 $ (2,377 ) $ 649 $ (1,278 ) The amounts reclassified from accumulated other comprehensive income (loss) by components are presented in the following table (in thousands): Three Months Ended Six Months Ended Affected Line Item in the July 30, August 1, July 30, August 1, Interest and other income, net: Available-for-sale securities: Marketable securities $ 178 $ 121 $ 62 $ 453 Operating cost and expenses: Cash flow hedges: Research and development 390 251 339 (613 ) Selling and marketing 8 4 7 (63 ) General and administrative 46 20 41 7 Total $ 622 $ 396 $ 449 $ (216 ) Consolidated Statements of Operations Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Interest and other income, net: Interest income $ 3,193 $ 3,971 $ 6,635 $ 8,048 Net realized gain on investments 261 25 425 361 Foreign currency exchange gain 2,958 3,494 1,017 3,901 Other income (expense) (31 ) (508 ) (90 ) 59 Interest expense (97 ) (192 ) (215 ) (412 ) $ 6,284 $ 6,790 $ 7,772 $ 11,957 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Numerator: Net income (loss) $ 51,305 $ (771,940 ) $ 28,626 $ (757,850 ) Denominator: Weighted average shares — basic 511,235 516,368 510,014 516,298 Effect of dilutive securities: Share-based awards 3,079 — 3,655 — Weighted average shares — diluted 514,314 516,368 513,669 516,298 Net income (loss) per share: Basic $ 0.10 $ (1.49 ) $ 0.06 $ (1.47 ) Diluted $ 0.10 $ (1.49 ) $ 0.06 $ (1.47 ) 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Weighted average shares outstanding: Share-based awards 38,873 57,437 38,264 57,519 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 six months ended August 1, 2015 due to the net loss reported in those periods.

Derivative Financial Instrument

Derivative Financial Instruments	6 Months Ended
Derivative Financial Instruments	Jul. 30, 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 July 30, January 30, 2016 2016 Israeli shekel $ 22,850 $ 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 Six Months Ended Location of Gains (Losses) July 30, August 1, July 30, August 1, in Statement of Operations 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Forward contracts: Research and development $ 265 $ 415 $ 451 $ (576 ) Selling and marketing 6 6 10 (71 ) General and administrative 31 32 53 18 $ 302 $ 453 $ 514 $ (629 ) 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 six months ended July 30, 2016 and August 1, 2015. In addition, realized losses from forward contracts that are not designated as hedging instruments and are included in interest and other income, net, were not material in the three and six months ended July 30, 2016 and August 1, 2015. The Company also reports hedge ineffectiveness from derivative financial instruments in current earnings, which was not material in the three and six months ended July 30, 2016 and August 1, 2015. No cash flow hedges were terminated as a result of forecasted transactions that did not occur.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
Fair Value Measurements	Jul. 30, 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 fair 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. 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 July 30, 2016. The tables below set forth, by level, the Company’s assets and liabilities that are measured at fair value. 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 July 30, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 17,946 $ — $ — $ 17,946 Time deposits — 50,561 — 50,561 Municipal debt securities — 9,740 — 9,740 Corporate debt securities — 12,595 — 12,595 Short-term investments: U.S. government and agency debt 206,276 — — 206,276 Corporate debt securities — 478,848 — 478,848 Asset backed securities — 51,608 — 51,608 Foreign government and agency debt — 14,615 — 14,615 Municipal debt securities — 28,910 — 28,910 Time deposits — 125,000 — 125,000 Prepaid expenses and other current assets: Foreign currency forward contracts — 210 — 210 Long-term investments: Auction rate securities — — 8,974 8,974 Other non-current assets: Severance pay fund — 699 — 699 Total assets $ 224,222 $ 772,786 $ 8,974 $ 1,005,982 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): Six Months Ended July 30, August 1, 2016 2015 Beginning balance $ 11,296 $ 10,226 Sales and redemptions (2,322 ) — Unrealized losses included in accumulated other comprehensive income — (103 ) Ending balance $ 8,974 $ 10,123

Acquired Intangible Assets, Net

Acquired Intangible Assets, Net	6 Months Ended
Acquired Intangible Assets, Net	Jul. 30, 2016
Acquired Intangible Assets, Net	Note 7. Acquired Intangible Assets, Net The carrying amounts of acquired intangible assets, net, are as follows (in thousands): July 30, 2016 January 30, 2016 Accumulated Accumulated Gross Amortization Net Gross Amortization Net Range of Carrying and Carrying Carrying and Carrying Useful Lives Amounts Write-Offs Amounts Amounts Write-Offs Amounts Purchased and core technology 4 -8 years $ 35,498 $ (25,020 ) $ 10,478 $ 35,498 $ (21,910 ) $ 13,588 Customer intangibles 5 -7 years 28,600 (26,960 ) 1,640 28,600 (24,178 ) 4,422 Total intangible assets, net $ 64,098 $ (51,980 ) $ 12,118 $ 64,098 $ (46,088 ) $ 18,010 Based on the identified intangible assets recorded at July 30, 2016, the future amortization expense for the next five fiscal years is as follows (in thousands): Fiscal Year Remainder of fiscal 2017 $ 4,750 2018 5,508 2019 1,860 2020 and thereafter — $ 12,118

Restructuring and Other Related

Restructuring and Other Related Charges	6 Months Ended
Restructuring and Other Related Charges	Jul. 30, 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 related to the restructuring actions described below (in thousands): Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Severance and related costs $ 15 $ 11,705 $ 15 $ 11,705 Facilities and related costs 846 206 4,477 225 Other exit-related costs — 189 — 189 861 12,100 4,492 12,119 Release of reserves: Severance — — (86 ) — Other exit-related (269 ) — (269 ) — Impairment and write-off of assets: Equipment 129 900 1,025 1,473 Restructuring and other related charges $ 721 $ 13,000 $ 5,162 $ 13,592 The Company recorded a total of $0.7 million and $5.2 million in the three and six months ended July 30, 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 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. In addition to the floors it vacated in the first quarter of fiscal 2017, the Company also vacated and released additional floor space back to the landlord in the second quarter of fiscal 2017. As a result, the Company recorded charges of $0.7 million in the three months ended July 30, 2016 primarily for the remaining lease obligation related to the vacated floor. In connection with the restructuring of its mobile platform business announced in September 2015, the Company also recorded charges in the three months ended July 30, 2016 of $0.3 million related to facility closures in China and the write off of additional mobile-related equipment classified as held for sale that it no longer was able to sell, which were offset by a recovery of $0.3 million from the release of reserve related to the early loss on contract termination 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 six months ended July 30, 2016 related to this restructuring action were $45.3 million, which included $28.1 million of severance benefits, a $1.3 million loss on early contract termination, $7.7 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 4,477 — 4,492 Net cash payments (875 ) (3,754 ) (200 ) (4,829 ) Release of reserves (86 ) (269 ) (355 ) Exchange rate adjustment 7 53 — 60 Balance at July 30, 2016 $ 216 $ 1,819 $ 1,175 $ 3,210 The balance at July 30, 2016 for facilities and related costs includes remaining payments under lease obligations related to vacated space that are expected to be paid through fiscal 2019.

Income Tax

Income Tax	6 Months Ended
Income Tax	Jul. 30, 2016
Income Tax	Note 9. Income Tax The income tax benefit for the three months ended July 30, 2016 was primarily due to a tax benefit of $12.7 million from a net reduction in unrecognized tax benefits, offset by current income tax expense of $7.2 million. The net reduction in unrecognized tax benefits arose from the release of $13.8 million due to expiration of the statute of limitations in certain non-US jurisdictions, which was partially offset by penalties and interest of $0.8 million accrued on the outstanding unrecognized tax benefit balance, and the accrual of an additional $0.3 million for a prior year tax position. The income tax benefit for the six months ended July 30, 2016 was primarily due to a tax benefit of $12.5 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, offset by current income tax expense of $4.5 million. 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 $1.5 million accrued on the outstanding unrecognized tax benefit balance, and the accrual of an additional $0.3 million for a prior year tax position. The income tax expense for the three months ended August 1, 2015 was primarily due to current income tax liability of $15.2 million and a $6.7 million provision to record a valuation allowance against certain deferred tax assets in a non-U.S. jurisdiction. These tax expenses for the three months ended August 1, 2015 were partially offset by a tax benefit of $11.7 million from a net reduction in unrecognized tax benefits, and true-up adjustments of $4.8 million, primarily related to the filing of tax returns. The net reduction in unrecognized tax benefits arose from the release of $13.8 million due to expiration of the statute of limitations and settlement of audits in certain non-U.S. jurisdictions, which was partially offset by penalties and interest of $2.1 million accrued on the outstanding unrecognized tax benefit balance. The income tax expense for the six months ended August 1, 2015 was primarily due to current income tax liability of $19.5 million, a $6.7 million provision to record a valuation allowance against certain deferred tax assets in a non-U.S. jurisdiction and an additional 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 six months ended August 1, 2015 were partially offset by tax benefits of $14.8 million from a net reduction in unrecognized tax benefits, and true-up adjustments of $4.8 million, primarily related to the filing of tax returns. The net reduction in unrecognized tax benefits arose from the release of $17.8 million due to expiration of the statute of limitations and settlement of audits in certain non-U.S. jurisdictions, which was partially offset by penalties and interest of $3.0 million accrued on the outstanding unrecognized tax benefit balance. 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 $9.9 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 $1.3 million and $2.2 million for the three and six months ended July 30, 2016, respectively, and $1.6 million and $4.9 million for the three and six months ended August 1, 2015, respectively. The benefit of the tax incentives on net income per share was less than $0.01 per share for the three and six months ended July 30, 2016, compared to a benefit of less than $0.01 per share for the three months ended August 1, 2015 and $0.01 per share for the six months ended August 1, 2015. The Company’s principal source of liquidity as of July 30, 2016 consisted of approximately $1.6 billion of cash, cash equivalents and short-term investments, of which approximately $850 million was held by foreign subsidiaries (outside Bermuda). Approximately $650 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 $200 million.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jul. 30, 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 July 30, 2016, these foundries had incurred approximately $207.1 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 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. Litigation is subject to inherent uncertainties and unfavorable rulings could occur. An unfavorable ruling in 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. The Company believes that its products do not infringe valid and enforceable claims and it will continue to vigorously defend against the allegations in these matters. However, 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. As of July 30, 2016, the Company has an accrued litigation balance of $3.2 million related to certain legal proceedings described below. Unless otherwise stated, 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. Carnegie Mellon University Litigation. USEI Litigation. On May 4, 2010, Marvell Semiconductor, Inc. (“MSI”) filed a motion to intervene in the USEI litigation, which was granted on May 19, 2010. On July 13, 2010, the E.D. of Texas issued an order granting the defendants’ motion to transfer the action to the U.S. District Court for the Northern District of California (“N.D. of California”); the case was formally transferred on August 23, 2010. On September 14, 2011, USEI withdrew its allegations against MSI for the ‘459 patent. On August 16, 2013, the N.D. of California granted defendants’ summary judgment motion to preclude the plaintiff from recovering certain pre-suit damages. On November 7, 2014, on summary judgment, the N.D. of California found that all the patents-in-suit were either invalid or not infringed. On December 1, 2014, the N.D. of California entered a judgment in favor of defendants and awarded defendants’ costs. On December 29, 2014, USEI filed a motion to alter or amend the N.D. of California’s summary judgment order, which the N.D. of California denied on March 31, 2015. On April 24, 2015, USEI filed its notice of appeal. On April 25, 2016, the Federal Circuit affirmed the N.D. of California’s judgment in favor of MSI. On June 29, 2016, the Federal Circuit denied USEI’s petition for rehearing. 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. 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). Failure to file an amended complaint will result in dismissal with prejudice. To the Company’s knowledge, none of the individual defendants has yet been served. 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 $129.9 million at July 30, 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. The underlying indemnity agreements will terminate upon the final dismissal of the case which the Company expects will occur in the third quarter of fiscal 2017. 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	6 Months Ended
Shareholders' Equity	Jul. 30, 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 Number of Weighted Number of Weighted Balance at January 30, 2016 40,874 $ 13.59 2,156 $ 15.43 43,030 $ 13.68 Granted 1,965 $ 9.80 — $ — 1,965 $ 9.80 Exercised (81 ) $ 6.93 — $ — (81 ) $ 6.93 Canceled/Forfeited (3,160 ) $ 21.11 (2,156 ) $ 15.43 (5,316 ) $ 18.80 Balance at July 30, 2016 39,598 $ 12.82 — $ — 39,598 $ 12.82 Vested or expected to vest at July 30, 2016 37,944 $ 12.79 Exercisable at July 30, 2016 24,369 $ 12.66 For time-based stock options vested and expected to vest at July 30, 2016, the aggregate intrinsic value was $32.1 million and the weighted average remaining contractual term was 5.6 years. For time-based stock options exercisable at July 30, 2016, the aggregate intrinsic value was $24.7 million and the weighted average remaining contractual term was 4.3 years. The aggregate intrinsic value of stock options exercised during the three months ended July 30, 2016 and August 1, 2015 was $0.1 million and $2.5 million, respectively. The aggregate intrinsic value of stock options exercised during the six months ended July 30, 2016 and August 1, 2015 was $0.2 million and $8.8 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 $11.75 as reported on the NASDAQ Global Select Market for all in-the-money options as of July 29, 2016 was used to calculate the aggregate intrinsic value. As of July 30, 2016, the unamortized compensation expense was $26.8 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 1.9 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 Number of Weighted Number of Weighted Number of Weighted Balance at January 30, 2016 8,343 $ 13.57 977 $ 14.43 353 $ 12.24 9,673 $ 13.61 Granted 7,530 $ 9.43 — $ — — $ — 7,530 $ 9.43 Vested (4,988 ) $ 14.16 (155 ) $ 14.15 — $ — (5,143 ) $ 14.16 Canceled/Forfeited (586 ) $ 11.30 (822 ) $ 14.49 (300 ) $ 12.24 (1,708 ) $ 13.00 Balance at July 30, 2016 10,299 $ 10.38 — $ — 53 $ 12.24 10,352 $ 10.39 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 Executive Compensation Committee of the Company’s Board of Directors. 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 July 30, 2016 was $107.6 million. The number of restricted stock units that are expected to vest is 9.2 million shares. As of July 30, 2016, unamortized compensation expense related to restricted stock units was $77.1 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 six months ended July 30, 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 Securities and Exchange Commission (“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. During the three and six months ended August 1, 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 July 30, 2016, there was $24.0 million of unrecognized compensation cost related to the ESPP. Share Repurchase Program The Company had no repurchases of its common shares during the three and six months ended July 30, 2016. The Company repurchased 14.6 million of its common shares for $193.2 million in cash during the three months ended August 1, 2015 and 16.0 million of its common shares for $215.3 million during the six months ended August 1, 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 July 30, 2016, a total of 241.6 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 $182.6 million remaining available for future share repurchases. The Company has made no subsequent share repurchases since its third quarter of fiscal 2016. Dividends The Company paid the following cash dividends (in thousands, except per share amounts): Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Cash dividend per share $ 0.06 $ 0.06 $ 0.12 $ 0.12 Total payment to shareholders $ 30,675 $ 31,194 $ 61,136 $ 62,104 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, 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. In addition, developments in ongoing litigation could affect the Company’s ability to make a dividend payment on a declared payment date until such time as the Company can meet statutory requirements under Bermuda law.

Share-Based Compensation

Share-Based Compensation	6 Months Ended
Share-Based Compensation	Jul. 30, 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Cost of goods sold $ 2,832 $ 2,012 $ 4,634 $ 3,559 Research and development 28,581 27,808 52,977 52,589 Selling and marketing 3,315 2,707 6,257 5,284 General and administrative 2,468 4,147 (2,219 ) 8,463 $ 37,196 $ 36,674 $ 61,649 $ 69,895 Share-based compensation capitalized in inventory was $1.4 million at July 30, 2016 and $1.5 million at January 30, 2016. Upon the termination 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 six months ended July 30, 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Time-based Stock Options: Weighted average fair value $ 2.88 $ 3.97 $ 2.87 $ 3.98 Expected volatility 40 % 34 % 40 % 34 % Expected term (in years) 5.2 5.4 5.2 5.4 Risk-free interest rate 1.2 % 1.6 % 1.3 % 1.6 % Expected dividend yield 2.4 % 1.7 % 2.5 % 1.7 % Three and Six Months Ended July 30, August 1, 2016 2015 Employee Stock Purchase Plan: Estimated fair value $ — $ 3.78 Volatility — % 31 % Expected term (in years) — 1.3 Risk-free interest rate — % 0.4 % Dividend yield — % 1.7 % The Company had no new grants under the ESPP in the three and six months ended July 30, 2016 because enrollment for new participants in the offering period that would have started in June 2016 was delayed due to the delay in the Company’s timely filing of its periodic reports with the SEC (see “Note 11 – Shareholders’ Equity”).

Carnegie Mellon University Sett

Carnegie Mellon University Settlement	6 Months Ended
Carnegie Mellon University Settlement	Jul. 30, 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 six months ended July 30, 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 $3.2 million to cost of goods sold in the three and six months ended July 30, 2016, respectively.

Changes in the Company's Organi

Changes in the Company's Organization	6 Months Ended
Changes in the Company's Organization	Jul. 30, 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 Weili Dai as President was terminated by the Company’s Board of Directors. Dr. Sutardja and Ms. Dai remain on the Board of Directors at this time. 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, each having the authority to exercise all powers of the Chief Executive Officer. 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 will recommend and the Company will 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. 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 will assume the role of the Company’s principal executive officer immediately following the filing of the Q217 Form 10-Q. Mr. Murphy also joined the Board of Directors on July 11, 2016. 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.

Immaterial Restatement of Previ

Immaterial Restatement of Previously Issued Financial Statements and Reclassification	6 Months Ended
	Jul. 30, 2016
Immaterial Restatement of Previously Issued Financial Statements and Reclassification	Note 15. Immaterial Restatement of Previously Issued Financial Statements and Reclassification In the second quarter of fiscal 2017, the Company identified certain reporting errors in its consolidated statement of cash flows for the three months ended April 30, 2016, which it corrected in the consolidated statement of cash flows for the six months ended July 30, 2016. For the three months ended April 30, 2016, the Company previously excluded cash inflows of $53.7 million from net cash provided by investing activities related to unsettled trades of available-for-sale securities that settled in the quarter and had reported such cash inflows as changes in prepaid expenses and other assets within net cash used in operating activities. The Company also previously excluded depreciation of $5.3 million on certain manufacturing equipment from net cash used in operating activities and therefore, understated purchases of property and equipment within net cash provided by investing activities. These errors had no effect on the Company’s results of operations or financial position as of and for the three months ended April 30, 2016. The Company concluded that the condensed consolidated statement of cash flows for the three months ended April 30, 2016 is not materially misstated. The following table provides a summary of the corrections and their effect on net cash used in operating activities and net cash provided by investing activities (in thousands): Three Months Ended April 30, 2016 As Reported Adjustment As Adjusted Cash Flows from Operating Activities Depreciation and amortization $ 21,788 $ 5,326 $ 27,114 Prepaid expenses and other assets $ 38,056 $ (53,749 ) $ (15,693 ) Net cash provided by (used in) operating activities $ (609,601 ) $ (48,423 ) $ (658,024 ) Cash Flows from Investing Activities Sales of available-for-sale securities $ 218,522 $ 53,749 $ 272,271 Purchases of property and equipment $ (6,542 ) $ (5,326 ) $ (11,868 ) Net cash provided by investing activities $ 162,353 $ 48,423 $ 210,776 Net cash used in financing activities $ (50,710 ) $ — $ (50,710 ) Net decrease in cash and cash equivalents $ (497,958 ) $ — $ (497,958 )

The Company and Basis of Pres22

The Company and Basis of Presentation (Policies)	6 Months Ended
The Company and Basis of Presentation (Policies)	Jul. 30, 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. In a 52-week year, each fiscal quarter consists of 13 weeks. 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 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 July 30, 2016, the results of its operations for the three and six months ended July 30, 2016 and August 1, 2015, its comprehensive income (loss) for the three and six months ended July 30, 2016 and August 1, 2015, and its cash flows for the six months ended July 30, 2016 and August 1, 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. The results of operations for the three and six months ended July 30, 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 assets and 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 was effective for the Company 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 applied in the accounting for certain of its technology license agreements. As such, the Company will account for any new agreements on a prospective basis in accordance with the new guidance and will re-evaluate the accounting for any renewals to existing license agreements.
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.

Investments (Tables)

Investments (Tables)	6 Months Ended
Investments (Tables)	Jul. 30, 2016
Schedule of Available-for-sale Securities Reconciliation	The following tables summarize the Company’s investments (in thousands): July 30, 2016 Gross Gross Amortized Unrealized Unrealized Estimated Cost Gains Losses Fair Value Short-term investments: Available-for-sale: Corporate debt securities $ 475,483 $ 3,519 $ (154 ) $ 478,848 U.S. government and agency debt 206,056 273 (53 ) 206,276 Asset backed securities 51,489 132 (13 ) 51,608 Foreign government and agency debt 14,603 14 (2 ) 14,615 Municipal debt securities 28,873 41 (4 ) 28,910 Held-to-maturity: Time deposits 125,000 — — 125,000 Total short-term investments 901,504 3,979 (226 ) 905,257 Long-term investments: Available-for-sale: Auction rate securities 8,974 — — 8,974 Total long-term investments 8,974 — — 8,974 Total investments $ 910,478 $ 3,979 $ (226 ) $ 914,231 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Gross realized gains $ 280 $ 255 $ 668 $ 698 Gross realized losses (19 ) (230 ) (243 ) (337 ) Total net realized gains $ 261 $ 25 $ 425 $ 361
Investments Classified by Contractual Maturity Date	The contractual maturities of available-for-sale securities are presented in the following tables (in thousands): July 30, 2016 January 30, 2016 Amortized Estimated Amortized Estimated Cost Fair Value Cost Fair Value Due in one year or less $ 355,835 $ 355,931 $ 304,117 $ 304,035 Due between one and five years 538,247 541,894 689,847 689,279 Due over five years 16,396 16,406 22,556 22,551 $ 910,478 $ 914,231 $ 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): July 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 $ 57,734 $ (75 ) $ 20,946 $ (79 ) $ 78,680 $ (154 ) U.S. government and agency debt 60,760 (46 ) 6,993 (7 ) 67,753 (53 ) Asset backed securities 7,003 (6 ) 3,994 (7 ) 10,997 (13 ) Foreign government and agency debt 4,411 (2 ) — — 4,411 (2 ) Municipal debt securities 1,296 (1 ) 1,497 (3 ) 2,793 (4 ) Total securities $ 131,204 $ (130 ) $ 33,430 $ (96 ) $ 164,634 $ (226 ) 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)	6 Months Ended
Supplemental Financial Information (Tables)	Jul. 30, 2016
Schedule of Inventories	July 30, January 30, 2016 2016 Inventories: Work-in-process $ 129,460 $ 131,471 Finished goods 73,257 78,546 Total inventories $ 202,717 $ 210,017
Schedule of Property, Plant and Equipment, Net	July 30, January 30, 2016 2016 Property and equipment, net: Machinery and equipment $ 587,919 $ 578,627 Buildings 144,320 144,320 Computer software 99,016 102,928 Land 53,373 53,373 Building improvements 49,947 49,927 Leasehold improvements 50,151 50,192 Furniture and fixtures 24,233 27,119 Construction in progress 3,448 1,353 1,012,407 1,007,839 Less: Accumulated depreciation and amortization (737,633 ) (708,299 ) Total property and equipment, net $ 274,774 $ 299,540
Schedule of Other Non-current Assets	July 30, January 30, 2016 2016 Other non-current assets: Technology and other licenses $ 40,874 $ 48,770 Deferred tax assets 36,928 34,505 Investments in privately-held companies 5,804 5,804 Prepaid land use rights 12,966 13,123 Deposits 50,351 51,512 Other 13,663 10,996 Total other non-current assets $ 160,586 $ 164,710
Schedule of Accrued Liabilities	July 30, January 30, 2016 2016 Accrued liabilities: Accrued rebates $ 24,387 $ 41,320 Accrued royalties 16,361 16,217 Technology license obligations 16,753 17,985 Accrued legal expense 9,105 9,761 Accrued litigation 3,235 3,830 Other 43,135 42,947 Total accrued liabilities $ 112,976 $ 132,060
Schedule of Deferred Income	July 30, January 30, 2016 2016 Deferred income: Deferred revenue $ 102,212 $ 77,935 Deferred cost of goods sold (30,163 ) (22,213 ) Deferred income $ 72,049 $ 55,722
Schedule of Other Non-current Liabilities	July 30, January 30, 2016 2016 Other non-current liabilities: Technology license obligations $ 4,539 $ 12,461 Long-term accrued employee compensation 6,363 6,078 Other 6,381 8,424 Other non-current liabilities $ 17,283 $ 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 4,471 — 788 5,259 Amounts reclassified from accumulated other comprehensive loss (62 ) — (387 ) (449 ) Other comprehensive income, net of tax 4,409 — 401 4,810 Balance at July 30, 2016 $ 3,753 $ — $ 262 $ 4,015 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 (2,865 ) (103 ) 1,166 (1,802 ) Amounts reclassified from accumulated other comprehensive income (loss) (453 ) — 669 216 Other comprehensive income (loss), net of tax (3,318 ) (103 ) 1,835 (1,586 ) Balance at August 1, 2015 $ 450 $ (2,377 ) $ 649 $ (1,278 )
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 Six Months Ended Affected Line Item in the July 30, August 1, July 30, August 1, Interest and other income, net: Available-for-sale securities: Marketable securities $ 178 $ 121 $ 62 $ 453 Operating cost and expenses: Cash flow hedges: Research and development 390 251 339 (613 ) Selling and marketing 8 4 7 (63 ) General and administrative 46 20 41 7 Total $ 622 $ 396 $ 449 $ (216 )
Schedule of Interest and Other Income, Net	Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Interest and other income, net: Interest income $ 3,193 $ 3,971 $ 6,635 $ 8,048 Net realized gain on investments 261 25 425 361 Foreign currency exchange gain 2,958 3,494 1,017 3,901 Other income (expense) (31 ) (508 ) (90 ) 59 Interest expense (97 ) (192 ) (215 ) (412 ) $ 6,284 $ 6,790 $ 7,772 $ 11,957
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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Numerator: Net income (loss) $ 51,305 $ (771,940 ) $ 28,626 $ (757,850 ) Denominator: Weighted average shares — basic 511,235 516,368 510,014 516,298 Effect of dilutive securities: Share-based awards 3,079 — 3,655 — Weighted average shares — diluted 514,314 516,368 513,669 516,298 Net income (loss) per share: Basic $ 0.10 $ (1.49 ) $ 0.06 $ (1.47 ) Diluted $ 0.10 $ (1.49 ) $ 0.06 $ (1.47 )
Anti-dilutive Potential Shares	Anti-dilutive potential shares are presented in the following table (in thousands): Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Weighted average shares outstanding: Share-based awards 38,873 57,437 38,264 57,519

Derivative Financial Instrume25

Derivative Financial Instruments (Tables)	6 Months Ended
Derivative Financial Instruments (Tables)	Jul. 30, 2016
Schedule of Derivative Instruments	The notional amounts of outstanding forward contracts were as follows (in thousands): Buy Contracts July 30, January 30, 2016 2016 Israeli shekel $ 22,850 $ 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 Six Months Ended Location of Gains (Losses) July 30, August 1, July 30, August 1, in Statement of Operations 2016 2015 2016 2015 Derivatives designated as cash flow hedges: Forward contracts: Research and development $ 265 $ 415 $ 451 $ (576 ) Selling and marketing 6 6 10 (71 ) General and administrative 31 32 53 18 $ 302 $ 453 $ 514 $ (629 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
Fair Value Measurements (Tables)	Jul. 30, 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. 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 July 30, 2016 Level 1 Level 2 Level 3 Total Items measured at fair value on a recurring basis: Assets Cash equivalents: Money market funds $ 17,946 $ — $ — $ 17,946 Time deposits — 50,561 — 50,561 Municipal debt securities — 9,740 — 9,740 Corporate debt securities — 12,595 — 12,595 Short-term investments: U.S. government and agency debt 206,276 — — 206,276 Corporate debt securities — 478,848 — 478,848 Asset backed securities — 51,608 — 51,608 Foreign government and agency debt — 14,615 — 14,615 Municipal debt securities — 28,910 — 28,910 Time deposits — 125,000 — 125,000 Prepaid expenses and other current assets: Foreign currency forward contracts — 210 — 210 Long-term investments: Auction rate securities — — 8,974 8,974 Other non-current assets: Severance pay fund — 699 — 699 Total assets $ 224,222 $ 772,786 $ 8,974 $ 1,005,982 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): Six Months Ended July 30, August 1, 2016 2015 Beginning balance $ 11,296 $ 10,226 Sales and redemptions (2,322 ) — Unrealized losses included in accumulated other comprehensive income — (103 ) Ending balance $ 8,974 $ 10,123

Acquired Intangible Assets, N27

Acquired Intangible Assets, Net (Tables)	6 Months Ended
Acquired Intangible Assets, Net (Tables)	Jul. 30, 2016
Schedule of Finite-Lived Intangible Assets by Major Class	The carrying amounts of acquired intangible assets, net, are as follows (in thousands): July 30, 2016 January 30, 2016 Accumulated Accumulated Gross Amortization Net Gross Amortization Net Range of Carrying and Carrying Carrying and Carrying Useful Lives Amounts Write-Offs Amounts Amounts Write-Offs Amounts Purchased and core technology 4 -8 years $ 35,498 $ (25,020 ) $ 10,478 $ 35,498 $ (21,910 ) $ 13,588 Customer intangibles 5 -7 years 28,600 (26,960 ) 1,640 28,600 (24,178 ) 4,422 Total intangible assets, net $ 64,098 $ (51,980 ) $ 12,118 $ 64,098 $ (46,088 ) $ 18,010
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	Based on the identified intangible assets recorded at July 30, 2016, the future amortization expense for the next five fiscal years is as follows (in thousands): Fiscal Year Remainder of fiscal 2017 $ 4,750 2018 5,508 2019 1,860 2020 and thereafter — $ 12,118

Restructuring and Other Relat28

Restructuring and Other Related Charges (Tables)	6 Months Ended
Restructuring and Other Related Charges (Tables)	Jul. 30, 2016
Summary of 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 related to the restructuring actions described below (in thousands): Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Severance and related costs $ 15 $ 11,705 $ 15 $ 11,705 Facilities and related costs 846 206 4,477 225 Other exit-related costs — 189 — 189 861 12,100 4,492 12,119 Release of reserves: Severance — — (86 ) — Other exit-related (269 ) — (269 ) — Impairment and write-off of assets: Equipment 129 900 1,025 1,473 Restructuring and other related charges $ 721 $ 13,000 $ 5,162 $ 13,592
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 4,477 — 4,492 Net cash payments (875 ) (3,754 ) (200 ) (4,829 ) Release of reserves (86 ) (269 ) (355 ) Exchange rate adjustment 7 53 — 60 Balance at July 30, 2016 $ 216 $ 1,819 $ 1,175 $ 3,210

Shareholders' Equity (Tables)

Shareholders' Equity (Tables)	6 Months Ended
Shareholders' Equity (Tables)	Jul. 30, 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 Number of Weighted Number of Weighted Balance at January 30, 2016 40,874 $ 13.59 2,156 $ 15.43 43,030 $ 13.68 Granted 1,965 $ 9.80 — $ — 1,965 $ 9.80 Exercised (81 ) $ 6.93 — $ — (81 ) $ 6.93 Canceled/Forfeited (3,160 ) $ 21.11 (2,156 ) $ 15.43 (5,316 ) $ 18.80 Balance at July 30, 2016 39,598 $ 12.82 — $ — 39,598 $ 12.82 Vested or expected to vest at July 30, 2016 37,944 $ 12.79 Exercisable at July 30, 2016 24,369 $ 12.66
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 Number of Weighted Number of Weighted Number of Weighted Balance at January 30, 2016 8,343 $ 13.57 977 $ 14.43 353 $ 12.24 9,673 $ 13.61 Granted 7,530 $ 9.43 — $ — — $ — 7,530 $ 9.43 Vested (4,988 ) $ 14.16 (155 ) $ 14.15 — $ — (5,143 ) $ 14.16 Canceled/Forfeited (586 ) $ 11.30 (822 ) $ 14.49 (300 ) $ 12.24 (1,708 ) $ 13.00 Balance at July 30, 2016 10,299 $ 10.38 — $ — 53 $ 12.24 10,352 $ 10.39
Schedule of Cash Dividends	The Company paid the following cash dividends (in thousands, except per share amounts): Three Months Ended Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Cash dividend per share $ 0.06 $ 0.06 $ 0.12 $ 0.12 Total payment to shareholders $ 30,675 $ 31,194 $ 61,136 $ 62,104

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
Share-Based Compensation (Tables)	Jul. 30, 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Cost of goods sold $ 2,832 $ 2,012 $ 4,634 $ 3,559 Research and development 28,581 27,808 52,977 52,589 Selling and marketing 3,315 2,707 6,257 5,284 General and administrative 2,468 4,147 (2,219 ) 8,463 $ 37,196 $ 36,674 $ 61,649 $ 69,895
Employee Stock Purchase Plan
Weighted Average Assumptions Used to Calculate Fair Value Awards	Three and Six Months Ended July 30, August 1, 2016 2015 Employee Stock Purchase Plan: Estimated fair value $ — $ 3.78 Volatility — % 31 % Expected term (in years) — 1.3 Risk-free interest rate — % 0.4 % Dividend yield — % 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 Six Months Ended July 30, August 1, July 30, August 1, 2016 2015 2016 2015 Time-based Stock Options: Weighted average fair value $ 2.88 $ 3.97 $ 2.87 $ 3.98 Expected volatility 40 % 34 % 40 % 34 % Expected term (in years) 5.2 5.4 5.2 5.4 Risk-free interest rate 1.2 % 1.6 % 1.3 % 1.6 % Expected dividend yield 2.4 % 1.7 % 2.5 % 1.7 %

Immaterial Restatement of Pre31

Immaterial Restatement of Previously Issued Financial Statements and Reclassification (Tables)	6 Months Ended
	Jul. 30, 2016
Summary of Corrections and Effect on Net Cash Used in Operating Activities and Net Cash Provided by Investing Activities	The following table provides a summary of the corrections and their effect on net cash used in operating activities and net cash provided by investing activities (in thousands): Three Months Ended April 30, 2016 As Reported Adjustment As Adjusted Cash Flows from Operating Activities Depreciation and amortization $ 21,788 $ 5,326 $ 27,114 Prepaid expenses and other assets $ 38,056 $ (53,749 ) $ (15,693 ) Net cash provided by (used in) operating activities $ (609,601 ) $ (48,423 ) $ (658,024 ) Cash Flows from Investing Activities Sales of available-for-sale securities $ 218,522 $ 53,749 $ 272,271 Purchases of property and equipment $ (6,542 ) $ (5,326 ) $ (11,868 ) Net cash provided by investing activities $ 162,353 $ 48,423 $ 210,776 Net cash used in financing activities $ (50,710 ) $ — $ (50,710 ) Net decrease in cash and cash equivalents $ (497,958 ) $ — $ (497,958 )

Summary of Investments (Detail)

Summary of Investments (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	$ 910,478	$ 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	914,231	1,015,865
Total investments, amortized cost	910,478
Total investments Gross Unrealized Gains	3,979
Total investments Gross Unrealized Losses	(226)
Total investments Estimated Fair Value	914,231
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	901,504
Total Gross Unrealized Gains	3,979
Total Gross Unrealized Losses	(226)
Total Estimated Fair Value	905,257
Short-term Investments \| Time deposits
Gain (Loss) on Investments [Line Items]
Held-to-maturity securities, Amortized Cost	125,000
Held-to-maturity securities, Gross Unrealized Gains	0
Held-to-maturity securities, Gross Unrealized Losses	0
Held-to-maturity securities, Estimated Fair Value	125,000
Short-term Investments \| Corporate debt securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	475,483	558,337
Available-for-sale securities, Gross Unrealized Gains	3,519	766
Available-for-sale securities, Gross Unrealized Losses	(154)	(1,282)
Available-for-sale securities, Estimated Fair Value	478,848	557,821
Short-term Investments \| U.S. government and agency debt
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	206,056	317,595
Available-for-sale securities, Gross Unrealized Gains	273	64
Available-for-sale securities, Gross Unrealized Losses	(53)	(254)
Available-for-sale securities, Estimated Fair Value	206,276	317,405
Short-term Investments \| Asset-backed securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	51,489	76,711
Available-for-sale securities, Gross Unrealized Gains	132	81
Available-for-sale securities, Gross Unrealized Losses	(13)	(56)
Available-for-sale securities, Estimated Fair Value	51,608	76,736
Short-term Investments \| Foreign government and agency debt
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	14,603	21,370
Available-for-sale securities, Gross Unrealized Gains	14	2
Available-for-sale securities, Gross Unrealized Losses	(2)	(14)
Available-for-sale securities, Estimated Fair Value	14,615	21,358
Short-term Investments \| Municipal Debt Securities
Gain (Loss) on Investments [Line Items]
Available-for-sale securities, Amortized Cost	28,873	31,211
Available-for-sale securities, Gross Unrealized Gains	41	45
Available-for-sale securities, Gross Unrealized Losses	(4)	(7)
Available-for-sale securities, Estimated Fair Value	28,910	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 ($)	3 Months Ended			6 Months Ended
Investments - Additional Information (Detail) - USD ($)	Jul. 30, 2016	Apr. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Gain (Loss) on Investments [Line Items]
Impairment loss				$ 0
Proceeds from sales of available for sale securities		$ 272,271,000		339,837,000	$ 301,896,000
Available for sale securities, net realized gain	$ 261,000		$ 25,000	425,000	$ 361,000
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		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Schedule of Available-for-sale Securities [Line Items]
Gross realized gains	$ 280	$ 255	$ 668	$ 698
Gross realized losses	(19)	(230)	(243)	(337)
Total net realized gains	$ 261	$ 25	$ 425	$ 361

Contractual Maturities of Avail

Contractual Maturities of Available for Sale Securities (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Amortized Cost
Due in one year or less	$ 355,835	$ 304,117
Due between one and five years	538,247	689,847
Due over five years	16,396	22,556
Available-for-sale securities, Amortized Cost	910,478	1,016,520
Estimated Fair Value
Due in one year or less	355,931	304,035
Due between one and five years	541,894	689,279
Due over five years	16,406	22,551
Available-for-sale securities, Estimated Fair Value	$ 914,231	$ 1,015,865

Summary of Investments Gross Un

Summary of Investments Gross Unrealized Losses and Fair Value (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	$ 131,204	$ 612,510
Less than 12 months Unrealized Losses	(130)	(1,566)
12 months or more Fair Value	33,430	15,954
12 months or more Unrealized Losses	(96)	(47)
Total Fair Value	164,634	628,464
Total Unrealized Losses	(226)	(1,613)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	57,734	283,138
Less than 12 months Unrealized Losses	(75)	(1,237)
12 months or more Fair Value	20,946	14,383
12 months or more Unrealized Losses	(79)	(45)
Total Fair Value	78,680	297,521
Total Unrealized Losses	(154)	(1,282)
U.S. government and agency debt
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	60,760	263,325
Less than 12 months Unrealized Losses	(46)	(254)
12 months or more Fair Value	6,993
12 months or more Unrealized Losses	(7)
Total Fair Value	67,753	263,325
Total Unrealized Losses	(53)	(254)
Asset-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	7,003	46,646
Less than 12 months Unrealized Losses	(6)	(56)
12 months or more Fair Value	3,994
12 months or more Unrealized Losses	(7)
Total Fair Value	10,997	46,646
Total Unrealized Losses	(13)	(56)
Foreign government and agency debt
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	4,411	16,458
Less than 12 months Unrealized Losses	(2)	(14)
Total Fair Value	4,411	16,458
Total Unrealized Losses	(2)	(14)
Municipal Debt Securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months Fair Value	1,296	2,943
Less than 12 months Unrealized Losses	(1)	(5)
12 months or more Fair Value	1,497	1,571
12 months or more Unrealized Losses	(3)	(2)
Total Fair Value	2,793	4,514
Total Unrealized Losses	$ (4)	$ (7)

Inventories (Detail)

Inventories (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Inventory [Line Items]
Work-in-process	$ 129,460	$ 131,471
Finished goods	73,257	78,546
Total inventories	$ 202,717	$ 210,017

Supplemental Financial Inform38

Supplemental Financial Information - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Oct. 29, 2016	Jul. 30, 2016	Jan. 30, 2016
Additional Financial Information [Line Items]
Inventories		$ 202,717	$ 210,017
Third-party Logistics Providers
Additional Financial Information [Line Items]
Inventories		$ 24,300	$ 21,000
Scenario, Forecast
Additional Financial Information [Line Items]
Deferred revenue recognized	$ 15,600

Property and Equipment, Net (De

Property and Equipment, Net (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,012,407	$ 1,007,839
Less: Accumulated depreciation and amortization	(737,633)	(708,299)
Total property and equipment, net	274,774	299,540
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	587,919	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	99,016	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	49,947	49,927
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	50,151	50,192
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,233	27,119
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,448	$ 1,353

Other Non-current Assets (Detai

Other Non-current Assets (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Other non-current assets:
Technology and other licenses	$ 40,874	$ 48,770
Deferred tax assets	36,928	34,505
Investments in privately-held companies	5,804	5,804
Prepaid land use rights	12,966	13,123
Deposits	50,351	51,512
Other	13,663	10,996
Total other non-current assets	$ 160,586	$ 164,710

Accrued Liabilities (Detail)

Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Accrued liabilities:
Accrued rebates	$ 24,387	$ 41,320
Accrued royalties	16,361	16,217
Technology license obligations	16,753	17,985
Accrued legal expense	9,105	9,761
Accrued litigation	3,235	3,830
Other	43,135	42,947
Total accrued liabilities	$ 112,976	$ 132,060

Deferred Income (Detail)

Deferred Income (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Deferred Revenue Arrangement [Line Items]
Deferred revenue	$ 102,212	$ 77,935
Deferred cost of goods sold	(30,163)	(22,213)
Deferred income	$ 72,049	$ 55,722

Other Non-current Liabilities (

Other Non-current Liabilities (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Other non-current liabilities:
Technology license obligations	$ 4,539	$ 12,461
Long-term accrued employee compensation	6,363	6,078
Other	6,381	8,424
Other non-current liabilities	$ 17,283	$ 26,963

Changes in Accumulated Other Co

Changes in Accumulated Other Comprehensive Income (Loss) by Components (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			$ 4,140,123
Other comprehensive income (loss), net of tax	$ 1,793	$ (1,358)	4,810	$ (1,586)
Ending Balance	4,159,088		4,159,088
Unrealized Gain (Loss) on Marketable Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(656)	3,768
Other comprehensive income (loss) before reclassifications			4,471	(2,865)
Amounts reclassified from accumulated other comprehensive income (loss)			(62)	(453)
Other comprehensive income (loss), net of tax			4,409	(3,318)
Ending Balance	3,753	450	3,753	450
Unrealized Gain (Loss) on Auction Rate Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance				(2,274)
Other comprehensive income (loss) before reclassifications				(103)
Other comprehensive income (loss), net of tax				(103)
Ending Balance		(2,377)		(2,377)
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			788	1,166
Amounts reclassified from accumulated other comprehensive income (loss)			(387)	669
Other comprehensive income (loss), net of tax			401	1,835
Ending Balance	262	649	262	649
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance			(795)	308
Other comprehensive income (loss) before reclassifications			5,259	(1,802)
Amounts reclassified from accumulated other comprehensive income (loss)			(449)	216
Other comprehensive income (loss), net of tax			4,810	(1,586)
Ending Balance	$ 4,015	$ (1,278)	$ 4,015	$ (1,278)

Amounts Reclassified from Accum

Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) by Components (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest and other income, net	$ 6,284	$ 6,790	$ 7,772	$ 11,957
Research and development	(228,891)	(285,641)	(469,349)	(565,755)
Selling and marketing	(31,067)	(30,841)	(62,446)	(67,015)
General and administrative	(36,150)	(35,243)	(68,145)	(75,678)
Net income (loss)	51,305	(771,940)	28,626	(757,850)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	622	396	449	(216)
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	178	121	62	453
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	390	251	339	(613)
Selling and marketing	8	4	7	(63)
General and administrative	$ 46	$ 20	$ 41	$ 7

Interest and Other Income, Net

Interest and Other Income, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Interest and other income, net:
Interest income	$ 3,193	$ 3,971	$ 6,635	$ 8,048
Net realized gain on investments	261	25	425	361
Foreign currency exchange gain	2,958	3,494	1,017	3,901
Other income (expense)	(31)	(508)	(90)	59
Interest expense	(97)	(192)	(215)	(412)
Interest and other income, net	$ 6,284	$ 6,790	$ 7,772	$ 11,957

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		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Numerator:
Net income (loss)	$ 51,305	$ (771,940)	$ 28,626	$ (757,850)
Denominator:
Weighted average shares - basic	511,235	516,368	510,014	516,298
Effect of dilutive securities:
Share-based awards	3,079		3,655
Weighted average shares - diluted	514,314	516,368	513,669	516,298
Basic	$ 0.10	$ (1.49)	$ 0.06	$ (1.47)
Diluted	$ 0.10	$ (1.49)	$ 0.06	$ (1.47)

Anti-dilutive Potential Shares

Anti-dilutive Potential Shares (Detail) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Weighted average shares outstanding:
Share-based awards	38,873	57,437	38,264	57,519

Notional Amounts of Outstanding

Notional Amounts of Outstanding Foreign Currency Forward Contracts (Detail) - USD ($) $ in Thousands	Jul. 30, 2016	Jan. 30, 2016
Foreign Exchange Buy Contracts \| Israeli shekel
Derivative [Line Items]
Derivative, notional amount	$ 22,850	$ 19,082

Information about Gains (Losses

Information about Gains (Losses) Associated with Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	$ 302	$ 453	$ 514	$ (629)
Cash flow hedges \| Foreign currency forward contracts \| Research and development
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	265	415	451	(576)
Cash flow hedges \| Foreign currency forward contracts \| Selling and marketing
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	6	6	10	(71)
Cash flow hedges \| Foreign currency forward contracts \| General and administrative
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gains (Losses) in Statement of Operations	$ 31	$ 32	$ 53	$ 18

Derivative Financial Instrume51

Derivative Financial Instruments - Additional Information (Detail)	6 Months Ended
	Jul. 30, 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)	Jul. 30, 2016
Fair Value, Measurement Inputs, Disclosure [Line Items]
Percentage of total amount of assets measured using Level 3 valuation methodologies to total assets	0.20%

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	Jul. 30, 2016	Jan. 30, 2016
Assets
Total assets	$ 1,005,982	$ 1,625,441
Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	699	678
Foreign currency forward contracts
Liabilities
Accrued liabilities		195
Foreign currency forward contracts \| Prepaid expenses and other current assets
Assets
Prepaid expenses and other current assets	210	30
Cash equivalents \| U.S. government and agency debt
Assets
Cash equivalents		184,374
Cash equivalents \| Money market funds
Assets
Cash equivalents	17,946	160,400
Cash equivalents \| Time deposits
Assets
Cash equivalents	50,561	209,405
Cash equivalents \| Municipal Debt Securities
Assets
Cash equivalents	9,740
Cash equivalents \| Corporate debt securities
Assets
Cash equivalents	12,595	54,689
Short-term Investments \| U.S. government and agency debt
Assets
Investments	206,276	317,405
Short-term Investments \| Time deposits
Assets
Investments	125,000
Short-term Investments \| Municipal Debt Securities
Assets
Investments	28,910	31,249
Short-term Investments \| Corporate debt securities
Assets
Investments	478,848	557,821
Short-term Investments \| Asset-backed securities
Assets
Investments	51,608	76,736
Short-term Investments \| Foreign government and agency debt
Assets
Investments	14,615	21,358
Long-term investments \| Auction rate securities
Assets
Investments	8,974	11,296
Level 1
Assets
Total assets	224,222	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	17,946	160,400
Level 1 \| Short-term Investments \| U.S. government and agency debt
Assets
Investments	206,276	317,405
Level 2
Assets
Total assets	772,786	951,966
Level 2 \| Other non-current assets \| Severance Pay Fund
Assets
Other non-current asset	699	678
Level 2 \| Foreign currency forward contracts
Liabilities
Accrued liabilities		195
Level 2 \| Foreign currency forward contracts \| Prepaid expenses and other current assets
Assets
Prepaid expenses and other current assets	210	30
Level 2 \| Cash equivalents \| Time deposits
Assets
Cash equivalents	50,561	209,405
Level 2 \| Cash equivalents \| Municipal Debt Securities
Assets
Cash equivalents	9,740
Level 2 \| Cash equivalents \| Corporate debt securities
Assets
Cash equivalents	12,595	54,689
Level 2 \| Short-term Investments \| Time deposits
Assets
Investments	125,000
Level 2 \| Short-term Investments \| Municipal Debt Securities
Assets
Investments	28,910	31,249
Level 2 \| Short-term Investments \| Corporate debt securities
Assets
Investments	478,848	557,821
Level 2 \| Short-term Investments \| Asset-backed securities
Assets
Investments	51,608	76,736
Level 2 \| Short-term Investments \| Foreign government and agency debt
Assets
Investments	14,615	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	6 Months Ended
	Jul. 30, 2016	Aug. 01, 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		(103)
Ending balance	$ 8,974	$ 10,123

Acquired Intangible Assets Net

Acquired Intangible Assets Net (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jul. 30, 2016	Jan. 30, 2016
Acquired Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amounts	$ 64,098	$ 64,098
Accumulated Amortization and Write-Offs	(51,980)	(46,088)
Net Carrying Amount	12,118	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	(25,020)	(21,910)
Net Carrying Amounts, Finite-Lived	10,478	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	(26,960)	(24,178)
Net Carrying Amounts, Finite-Lived	$ 1,640	$ 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	Jul. 30, 2016USD ($)
Fiscal Year
Remainder of fiscal 2017	$ 4,750
2,018	5,508
2,019	1,860
2020 and thereafter	0
Net Carrying Amounts, Finite-Lived	$ 12,118

Summary of Restructuring and Ot

Summary of Restructuring and Other Related Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Restructuring Cost and Reserve [Line Items]
Severance and related costs	$ 15	$ 11,705	$ 15	$ 11,705
Facilities and related costs	846	206	4,477	225
Other exit-related costs		189		189
Restructuring Costs, Total	861	12,100	4,492	12,119
Impairment and write-off of assets: Equipment	129	900	1,025	1,473
Restructuring and other related charges	721	$ 13,000	5,162	$ 13,592
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Release of reserves			(86)
Other Exit-Related Costs
Restructuring Cost and Reserve [Line Items]
Release of reserves	$ (269)		$ (269)

Restructuring and Other Relat58

Restructuring and Other Related Charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring Costs and Asset Impairment Charges	$ 721	$ 13,000	$ 5,162	$ 13,592
Restructuring charges			4,492
Cumulative restructuring charges	45,300		45,300
Facilities and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges			4,477
Cumulative restructuring charges	200		200
Facilities and Related Costs \| Mobile and Wireless
Restructuring Cost and Reserve [Line Items]
Restructuring charges	300
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	7,700		7,700
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	$ 700

Reconciliation of Beginning and

Reconciliation of Beginning and Ending Restructuring Liability Balances by Major Type of Costs (Detail) $ in Thousands	6 Months Ended
	Jul. 30, 2016USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	$ 3,842
Restructuring charges	4,492
Net cash payments	(4,829)
Release of reserves	(355)
Exchange rate adjustment	60
Restructuring liabilities, ending balance	3,210
Severance and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	1,155
Restructuring charges	15
Net cash payments	(875)
Release of reserves	(86)
Exchange rate adjustment	7
Restructuring liabilities, ending balance	216
Facilities and Related Costs
Restructuring Cost and Reserve [Line Items]
Restructuring liabilities, beginning of balance	1,043
Restructuring charges	4,477
Net cash payments	(3,754)
Exchange rate adjustment	53
Restructuring liabilities, ending balance	1,819
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		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Income Taxes [Line Items]
Net increase (decrease) in unrecognized tax benefits	$ (12.7)	$ (11.7)	$ (12.5)	$ (14.8)
Current income tax (benefit) liability	7.2	15.2	4.5	19.5
Reduction in unrecognized tax benefits arising from the expiration of statute of limitations	13.8	13.8	14.3	17.8
Unrecognized tax benefit, interest and penalties accrued	0.8	2.1	1.5	3
Unrecognized tax benefit, accrual for prior year tax position	0.3		0.3
Deferred tax expense (benefit)			(2.5)
True-up adjustments		4.8		4.8
Additional tax provision				3.1
Uncertain tax positions decrease from the lapse of statutes of limitation in various jurisdictions during next 12 months	(9.9)		(9.9)
Tax incentives, tax savings amount	1.3	1.6	2.2	$ 4.9
Tax incentives, per share effect on earning				$ 0.01
Cash, cash equivalents and short-term investments	1,600		1,600
Undistributed earnings of foreign subsidiaries	$ 650		$ 650
Non-U.S. Jurisdiction
Income Taxes [Line Items]
Deferred tax assets valuation allowance		$ 6.7		$ 6.7
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			$ 200
Cash, cash equivalents and short-term investments	$ 850		$ 850

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	Feb. 16, 2016	Dec. 26, 2012	Jul. 30, 2016	Nov. 14, 2014
Commitments and Contingencies Disclosure [Line Items]
Accrued liability related to legal proceedings			$ 3.2
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			$ 129.9
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			$ 207.1

Stock Option Plan Activity (Det

Stock Option Plan Activity (Detail) - $ / shares shares in Thousands	6 Months Ended
	Jul. 30, 2016
Options Outstanding
Beginning Balance	43,030
Granted	1,965
Exercised	(81)
Canceled/Forfeited	(5,316)
Ending Balance	39,598
Weighted Average Exercise Price
Beginning Balance	$ 13.68
Granted	9.80
Exercised	6.93
Canceled/Forfeited	18.80
Ending Balance	$ 12.82
Time Based Option Award
Options Outstanding
Beginning Balance	40,874
Granted	1,965
Exercised	(81)
Canceled/Forfeited	(3,160)
Ending Balance	39,598
Vested or expected to vest at July 30, 2016	37,944
Exercisable at July 30, 2016	24,369
Weighted Average Exercise Price
Beginning Balance	$ 13.59
Granted	9.80
Exercised	6.93
Canceled/Forfeited	21.11
Ending Balance	12.82
Vested or expected to vest at July 30, 2016	12.79
Exercisable at July 30, 2016	$ 12.66
Market Based Option Award
Options Outstanding
Beginning Balance	2,156
Canceled/Forfeited	(2,156)
Weighted Average Exercise Price
Beginning Balance	$ 15.43
Canceled/Forfeited	$ 15.43

Shareholders' Equity - Addition

Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	Apr. 01, 2016	Jul. 30, 2016	Apr. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015	Jul. 29, 2016
Stockholders Equity Note [Line Items]
Closing stock price							$ 11.75
Employee stock purchase plan, shares issued		0		3,200,000	0	3,200,000
Employee stock purchase plan, weighted average price				$ 11.88		$ 11.88
Share repurchase program, shares repurchased		0	0	14,600,000	0	16,000,000
Share repurchase program, amount repurchased				$ 193.2		$ 215.3
Share repurchase program, cumulative shares repurchased		241,600,000			241,600,000
Share repurchase program, total amount of repurchases		$ 3,100			$ 3,100
Share repurchase program, remaining available for future share repurchases		182.6			182.6
Time Based Option Award
Stockholders Equity Note [Line Items]
Options vested and expected to vest, aggregate intrinsic value		32.1			$ 32.1
Options vested and expected to vest, weighted average remaining contractual term (in years)					5 years 7 months 6 days
Options exercisable, aggregate intrinsic value		24.7			$ 24.7
Options exercisable, weighted average remaining contractual term (in years)					4 years 3 months 18 days
Aggregate intrinsic value of stock options exercised		0.1		$ 2.5	$ 0.2	$ 8.8
Unrecognized share based compensation cost		$ 26.8			$ 26.8
Unrecognized share based compensation cost, weighted-average period of recognition					1 year 10 months 24 days
Employee stock purchase plan, weighted average price		$ 2.88		$ 3.97	$ 2.87	$ 3.98
Performance Based Restricted Stock Unit
Stockholders Equity Note [Line Items]
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		$ 77.1			$ 77.1
Unrecognized share based compensation cost, weighted-average period of recognition					1 year 6 months
Vested					5,143,000
Restricted stock units, aggregate intrinsic value		$ 107.6			$ 107.6
Restricted stock units vested and expected to vest		9,200,000			9,200,000
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		$ 24			$ 24
Refunded contribution amount					27.2
Share based compensation expense					$ 6.8

Activity Related to Non Vested

Activity Related to Non Vested Portion of Restricted Stock Units (Detail) shares in Thousands	6 Months Ended
	Jul. 30, 2016$ / sharesshares
Time Based Restricted Units
Restricted Stock Units Outstanding
Beginning Balance \| shares	8,343
Granted \| shares	7,530
Vested \| shares	(4,988)
Canceled/Forfeited \| shares	(586)
Ending Balance \| shares	10,299
Weighted Average Grant Date Fair Value
Beginning Balance \| $ / shares	$ 13.57
Granted \| $ / shares	9.43
Vested \| $ / shares	14.16
Canceled/Forfeited \| $ / shares	11.30
Ending Balance \| $ / shares	$ 10.38
Performance Based Restricted Stock Unit
Restricted Stock Units Outstanding
Beginning Balance \| shares	977
Vested \| shares	(155)
Canceled/Forfeited \| shares	(822)
Weighted Average Grant Date Fair Value
Beginning Balance \| $ / shares	$ 14.43
Vested \| $ / shares	14.15
Canceled/Forfeited \| $ / shares	$ 14.49
Market Based Restricted Stock Unit
Restricted Stock Units Outstanding
Beginning Balance \| shares	353
Canceled/Forfeited \| shares	(300)
Ending Balance \| shares	53
Weighted Average Grant Date Fair Value
Beginning Balance \| $ / shares	$ 12.24
Canceled/Forfeited \| $ / shares	12.24
Ending Balance \| $ / shares	$ 12.24
Restricted Stock Units (RSUs)
Restricted Stock Units Outstanding
Beginning Balance \| shares	9,673
Granted \| shares	7,530
Vested \| shares	(5,143)
Canceled/Forfeited \| shares	(1,708)
Ending Balance \| shares	10,352
Weighted Average Grant Date Fair Value
Beginning Balance \| $ / shares	$ 13.61
Granted \| $ / shares	9.43
Vested \| $ / shares	14.16
Canceled/Forfeited \| $ / shares	13
Ending Balance \| $ / shares	$ 10.39

Schedule of Cash Dividends (Det

Schedule of Cash Dividends (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Cash dividend
Cash dividend per share	$ 0.06	$ 0.06	$ 0.12	$ 0.12
Total payment to shareholders	$ 30,675	$ 31,194	$ 61,136	$ 62,104

Total Stock Compensation by Exp

Total Stock Compensation by Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 37,196	$ 36,674	$ 61,649	$ 69,895
Cost of goods sold
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	2,832	2,012	4,634	3,559
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	28,581	27,808	52,977	52,589
Selling and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	3,315	2,707	6,257	5,284
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$ 2,468	$ 4,147	$ (2,219)	$ 8,463

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 30, 2016	Jul. 30, 2016	Jan. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation capitalized in inventory	$ 1.4	$ 1.4	$ 1.5
Reversal of previously recognized share-based compensation expense		$ 6.9
Stock purchase rights granted		1,965,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock purchase rights granted	0	0

Weighted Average Assumptions Us

Weighted Average Assumptions Used to Calculate Fair Value of Time Based Stock Option Award (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 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	$ 2.88	$ 3.97	$ 2.87	$ 3.98
Expected volatility	40.00%	34.00%	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%	1.60%	1.30%	1.60%
Expected dividend yield	2.40%	1.70%	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	6 Months Ended
	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 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			$ 3.78
Volatility			31.00%
Expected term (in years)		0 years	1 year 3 months 18 days
Risk-free interest rate			0.40%
Dividend yield			1.70%

Carnegie Mellon University Se70

Carnegie Mellon University Settlement - Additional Information (Detail) - Carnegie Mellon Litigation - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jul. 30, 2016	Jul. 30, 2016
Loss Contingencies [Line Items]
Litigation settlement, amount		$ 750
Cost of goods sold
Loss Contingencies [Line Items]
Litigation settlement, amount	$ 1.6	3.2
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 \| Cost of goods sold
Loss Contingencies [Line Items]
Litigation settlement, amount		$ 81.3
Future license settlement
Loss Contingencies [Line Items]
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 Orga71

Changes in the Company's Organization - Additional Information (Detail)	6 Months Ended
	Jul. 30, 2016Director
Reorganization [Line Items]
Number of independent directors	4

Immaterial Restatement of Pre72

Immaterial Restatement of Previously Issued Financial Statements and Reclassification - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 30, 2016	Jul. 30, 2016	Aug. 01, 2015
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales of available-for-sale securities	$ 272,271	$ 339,837	$ 301,896
Prepaid expenses and other assets	(15,693)	9,035	(11,328)
Depreciation and amortization	27,114	53,980	51,811
Purchases of property and equipment	(11,868)	$ 24,377	$ 24,320
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales of available-for-sale securities	53,749
Prepaid expenses and other assets	(53,749)
Depreciation and amortization	5,326
Purchases of property and equipment	$ (5,326)

Summary of Corrections and Effe

Summary of Corrections and Effect on Net Cash Used in Operating Activities and Net Cash Provided by Investing Activities (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 30, 2016	Jul. 30, 2016	Aug. 01, 2015
Cash Flows from Operating Activities
Depreciation and amortization	$ 27,114	$ 53,980	$ 51,811
Prepaid expenses and other assets	(15,693)	9,035	(11,328)
Net cash provided by (used in) operating activities	(658,024)	(598,742)	85,452
Cash Flows from Investing Activities
Sales of available-for-sale securities	272,271	339,837	301,896
Purchases of property and equipment	(11,868)	24,377	24,320
Net cash provided by investing activities	210,776	125,420	(136,604)
Net cash used in financing activities	(50,710)	(86,106)	(232,295)
Net decrease in cash and cash equivalents	(497,958)	$ (559,428)	$ (283,447)
As Reported
Cash Flows from Operating Activities
Depreciation and amortization	21,788
Prepaid expenses and other assets	38,056
Net cash provided by (used in) operating activities	(609,601)
Cash Flows from Investing Activities
Sales of available-for-sale securities	218,522
Purchases of property and equipment	(6,542)
Net cash provided by investing activities	162,353
Net cash used in financing activities	(50,710)
Net decrease in cash and cash equivalents	(497,958)
Adjustment
Cash Flows from Operating Activities
Depreciation and amortization	5,326
Prepaid expenses and other assets	(53,749)
Net cash provided by (used in) operating activities	(48,423)
Cash Flows from Investing Activities
Sales of available-for-sale securities	53,749
Purchases of property and equipment	(5,326)
Net cash provided by investing activities	$ 48,423