v2.4.0.6

Income Taxes (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Mar. 31, 2012 | Mar. 26, 2011
Income Taxes [Line Items] |  |
Decrease in valuation allowance | $ 39,300,000 | $ 157,800,000
Forecasting period for realizing deferred tax assets | 3 years | 3 years
Federal net operating loss carryforwards | 353,800,000 |
Net operating loss included in deferred tax assets | 105,220,000 | 131,331,000
Excess stock deductions | 77,800,000 |
Unrecognized tax benefit | 0 | 0
Section 382 Of Internal Revenue Code [Member] |  |
Income Taxes [Line Items] |  |
Federal net operating loss carryforwards | 36,600,000 |
Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss included in deferred tax assets | 276,000,000 |
Tax effected deferred tax asset | 96,600,000 |
Non-U.S [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards | 2,100,000 |
Undistributed earnings in non-U.S subsidiaries | 185,000 |
Unrecognized tax benefit | 66,000 |
State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforwards | 104,800,000 |
Maximum [Member] | Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2029 |
Maximum [Member] | State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2029 |
Minimum [Member] | Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2019 |
Minimum [Member] | State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2013 |
Research Tax Credit Carryforward [Member] | Federal [Member] |  |
Income Taxes [Line Items] |  |
Tax credit carryforward | 21,400,000 |
Research Tax Credit Carryforward [Member] | State [Member] |  |
Income Taxes [Line Items] |  |
Tax credit carryforward | 14,600,000 |
Tax credit carryforward subject to expiration | 2,900,000 |
Tax credit carryforward not subject to expiration | $ 11,700,000 |
Research Tax Credit Carryforward [Member] | Maximum [Member] | Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2032 |
Research Tax Credit Carryforward [Member] | Maximum [Member] | State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2027 |
Research Tax Credit Carryforward [Member] | Minimum [Member] | Federal [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2013 |
Research Tax Credit Carryforward [Member] | Minimum [Member] | State [Member] |  |
Income Taxes [Line Items] |  |
Net operating loss carryforward expirations | 2022 |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6969291&loc=d3e28680-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 289 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6969291&loc=d3e28680-109314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32621-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 289 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32632-109319 + Details
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- Definition The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to other deductions received under enacted tax laws not otherwise listed in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Carryforwards -URI http://asc.fasb.org/extlink&oid=6506874 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the United States that are not subject to U.S. federal income taxes. + References No definition available. + Details
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