| Organization, Consolidation and Presentation of Financial Statements [Abstract] | Period [Axis] |
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2016-01-31 - 2017-01-28 |
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Organization, Consolidation and Presentation of Financial Statements [Abstract] | |
Schedule of Cash and Cash Equivalents | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Cash and cash equivalents: | | | | Cash | $ | 651,953 |
| | $ | 669,312 |
| Cash equivalents: | | | | Time deposits | 67,000 |
| | 209,405 |
| U.S. government and agency debt | 17,497 |
| | 184,374 |
| Money market funds | 36,122 |
| | 160,400 |
| Corporate debt securities | 31,280 |
| | 54,689 |
| Municipal debt securities | 8,740 |
| | — |
| Foreign government and agency debt | 1,500 |
| | — |
| Cash and cash equivalents | $ | 814,092 |
| | $ | 1,278,180 |
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Schedule of Provision for Sales Returns and Allowances | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Provision for sales returns and allowances: | | | | Sales returns | $ | 470 |
| | $ | 1,873 |
| Doubtful accounts | 914 |
| | 889 |
| | $ | 1,384 |
| | $ | 2,762 |
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Schedule of Inventories | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Inventories: | | | | Work-in-process | $ | 110,083 |
| | $ | 125,800 |
| Finished goods | 61,886 |
| | 75,158 |
| Inventories | $ | 171,969 |
| | $ | 200,958 |
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Schedule of Property and Equipment, Net | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Property and equipment, net: | | | | Machinery and equipment | $ | 578,248 |
| | $ | 575,954 |
| Buildings and building improvements | 194,290 |
| | 194,247 |
| Computer software | 99,186 |
| | 102,840 |
| Land | 53,373 |
| | 53,373 |
| Leasehold improvements | 49,004 |
| | 50,192 |
| Furniture and fixtures | 23,903 |
| | 27,118 |
| Construction in progress | 11,240 |
| | 1,353 |
| | 1,009,244 |
| | 1,005,077 |
| Less: Accumulated depreciation | (765,847 | ) | | (708,299 | ) | Property and equipment, net | $ | 243,397 |
| | $ | 296,778 |
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Schedule of Other Non-current Assets | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Other non-current assets: | | | | Technology and other licenses | $ | 53,254 |
| | $ | 48,091 |
| Deferred tax assets | 26,608 |
| | 34,505 |
| Investments in privately-held companies | 5,787 |
| | 5,804 |
| Prepaid land use rights | 12,810 |
| | 13,123 |
| Deposits | 3,756 |
| | 51,512 |
| Other | 11,109 |
| | 10,996 |
| Other non-current assets | $ | 113,324 |
| | $ | 164,031 |
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Schedule of Accrued Liabilities | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Accrued liabilities: | | | | Accrued rebates | $ | 26,095 |
| | $ | 41,320 |
| Restructuring liability | 23,150 |
| | 3,842 |
| Accrued royalties | 17,349 |
| | 16,217 |
| Technology license obligations | 21,905 |
| | 17,985 |
| Accrued legal expense | 5,127 |
| | 9,761 |
| Other | 49,865 |
| | 42,935 |
| Accrued liabilities | $ | 143,491 |
| | $ | 132,060 |
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Schedule of Deferred Income | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Deferred income: | | | | Net deferred revenue | $ | 93,148 |
| | $ | 75,541 |
| Deferred cost of goods sold | (25,024 | ) | | (21,568 | ) | Deferred income | $ | 68,124 |
| | $ | 53,973 |
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Schedule of Other Non-current Liabilities | | | | | | | | | | | January 28,
2017 | | January 30,
2016 | Other non-current liabilities: | | | | Technology license obligations | $ | 14,949 |
| | $ | 12,461 |
| Long-term accrued employee compensation | 4,075 |
| | 6,078 |
| Deferred tax liabilities | 38,777 |
| | 1,098 |
| Other | 6,136 |
| | 7,326 |
| Other non-current liabilities | $ | 63,937 |
| | $ | 26,963 |
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Schedule of Changes in 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 (Loss) on Marketable Securities | | Unrealized Loss on Auction Rate Securities | | Unrealized Gain (Loss) on Cash Flow Hedges | | Total | Balance at January 31, 2015 | $ | 3,768 |
| | $ | (2,274 | ) | | $ | (1,186 | ) | | $ | 308 |
| Other comprehensive income (loss) before reclassifications | (3,838 | ) | | — |
| | 1,111 |
| | (2,727 | ) | Amounts reclassified from accumulated other comprehensive income (loss) | (586 | ) | | 2,274 |
| | (64 | ) | | 1,624 |
| Net current-period other comprehensive income (loss), net of tax | (4,424 | ) | | 2,274 |
| | 1,047 |
| | (1,103 | ) | Balance at January 30, 2016 | (656 | ) | | — |
| | (139 | ) | | (795 | ) | Other comprehensive income before reclassifications | 1,766 |
| | — |
| | 1,496 |
| | 3,262 |
| Amounts reclassified from accumulated other comprehensive income | (1,911 | ) | | — |
| | (533 | ) | | (2,444 | ) | Net current-period other comprehensive income (loss), net of tax | (145 | ) | | — |
| | 963 |
| | 818 |
| Balance at January 28, 2017 | $ | (801 | ) | | $ | — |
| | $ | 824 |
| | $ | 23 |
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Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Loss) | The amounts reclassified from accumulated other comprehensive income (loss) by components are presented in the following table (in thousands): | | | | | | | | | | | | | | Year Ended | Affected Line Item in the Statement of Operations | January 28,
2017 | | January 30,
2016 | | January 31,
2015 | Interest and other income, net: | | | | | | Available-for-sale securities: | | | | | | Marketable securities | $ | 1,911 |
| | $ | 586 |
| | $ | 1,245 |
| Auction rate securities | — |
| | (2,274 | ) | | (512 | ) | Operating costs and expenses: | | | | | | Cash flow hedges: | | | | | | Research and development | 467 |
| | 48 |
| | (198 | ) | Selling and marketing | 10 |
| | (1 | ) | | (8 | ) | General and administrative | 56 |
| | 17 |
| | (12 | ) | Total | $ | 2,444 |
| | $ | (1,624 | ) | | $ | 515 |
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Schedule of Interest and Other Income, Net | | | | | | | | | | | | | | | Year Ended | | January 28,
2017 | | January 30,
2016 | | January 31,
2015 | Interest and other income, net: | | | | | | Interest income | $ | 13,198 |
| | $ | 15,982 |
| | $ | 11,370 |
| Net realized gain (loss) on investments | 1,500 |
| | (1,473 | ) | | 1,449 |
| Currency translation gain | 1,746 |
| | 6,655 |
| | 1,871 |
| Other income (loss) | 946 |
| | (2,773 | ) | | 9,811 |
| Interest expense | (368 | ) | | (706 | ) | | (1,167 | ) | | $ | 17,022 |
| | $ | 17,685 |
| | $ | 23,334 |
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Schedule of Supplemental Cash Flow Information | | | | | | | | | | | | | | | Year Ended | | January 28,
2017 | | January 30,
2016 | | January 31,
2015 | Supplemental cash flow information: | | | | | | Cash paid for interest | $ | 363 |
| | $ | 703 |
| | $ | 1,167 |
| Cash paid for income taxes, net | $ | 17,032 |
| | $ | 13,363 |
| | $ | 15,727 |
| Non-Cash Investing and Financing Activities: | | | | | | Purchase of intellectual property under license obligations | $ | 27,081 |
| | $ | 13,800 |
| | $ | — |
| Unsettled trade receivable of available-for-sale securities | $ | 7,742 |
| | $ | 53,749 |
| | $ | — |
| Unsettled trade payable of available-for-sale securities | $ | 15,371 |
| | $ | — |
| | $ | — |
| Unpaid purchase of property and equipment at end of year | $ | 2,547 |
| | $ | 9,069 |
| | $ | 7,083 |
| Unpaid repurchases of our common shares | $ | 1,499 |
| | $ | — |
| | $ | — |
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Schedule of Computation of Basic and Diluted Net Income (Loss) 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): | | | | | | | | | | | | | | Year Ended | | January 28,
2017 | | January 30,
2016 | | January 31,
2015 | Numerator: | | | | | | Income (loss) from continuing operations | $ | 43,994 |
| | $ | (769,155 | ) | | $ | 483,787 |
| Loss from discontinued operations | (22,843 | ) | | (42,245 | ) | | (48,441 | ) | Net income (loss) | $ | 21,151 |
| | $ | (811,400 | ) | | $ | 435,346 |
| Denominator: | | | | | | Weighted average shares — basic | 509,738 |
| | 510,945 |
| | 511,089 |
| Effect of dilutive securities: | | | | | | Share-based awards | 7,775 |
| | — |
| | 9,671 |
| Weighted average shares — diluted | 517,513 |
| | 510,945 |
| | 520,760 |
| Income (loss) from continuing operations per share: | | | | | | Basic | $ | 0.09 |
| | $ | (1.51 | ) | | $ | 0.95 |
| Diluted | $ | 0.09 |
| | $ | (1.51 | ) | | $ | 0.93 |
| Loss from discontinued operations per share: | | | | | | Basic | $ | (0.05 | ) | | $ | (0.08 | ) | | $ | (0.10 | ) | Diluted | $ | (0.05 | ) | | $ | (0.08 | ) | | $ | (0.09 | ) | Net income (loss) per share: | | | | | | Basic | $ | 0.04 |
| | $ | (1.59 | ) | | $ | 0.85 |
| Diluted | $ | 0.04 |
| | $ | (1.59 | ) | | $ | 0.84 |
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Schedule of Anti-dilutive Potential Shares | Anti-dilutive potential shares are presented in the following table (in thousands): | | | | | | | | | | | Year Ended | | January 28, 2017 | | January 30, 2016 | | January 31, 2015 | Weighted average shares outstanding: | | | | | | Share-based awards | 22,642 |
| | 64,420 |
| | 35,636 |
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