Accounting Remediation and Reconstruction Expense and Litigation Costs Accounting remediation & reconstruction expense & litigation costs This element represents Accounting remediation and reconstruction expense and litigation costs. Restructuring And Impairment Charges Charges Restructuring and impairment charges Amount charged against earnings during the period for as resulting from the restructuring of business and Impairment of assets. Other Non Operating Expenses, Net Other (income) expense, net This element represents the total of all non operating expenses after deducting the non operating income there from. Other expense (income), net Fair Value Adjustment of Preferred Stock Per Share Fair value adjustment of Preferred Stock-Series B (in dollars per share) The aggregate value of preferred stock dividends and other adjustments necessary to derive net income apportioned to common stockholders per each share of preferred stock. Net Loss Per Share Available to Common Stockholders Net loss per common share available to common stockholders (in dollars per share) The amount of net income (loss) for the period per each share of common stock outstanding during the reporting period after deducting the share of preferred stock. Net Income Per Preferred Share [Abstract] Net income per preferred share Net Income Per Preferred Share Net income (in dollars per share) Represents net income per preferred share of the reporting entity. Preferred shares outstanding (in shares) Preferred Number of Shares Outstanding Represents number of preferred shares outstanding during the reporting period. Intellectual Property Revenues Intellectual property revenues Represents the revenues arising on account of engineering design fees, licensing revenues, revenues from sale of patents and material royalties recognized during the period. Premium related to Term B Loan issued in debt exchange Premium Related to Loan Issued Represents amount related to term loan issued in debt exchange of the reporting entity. Adjustments to Additional Paid in Capital Convertible Debt with Conversion Feature Shares Conversion of Series B Preferred Shares (in shares) This element represent conversion of Series B Preferred Shares. Repurchase and retirement of restricted stock units for payroll taxes Repurchase and Retirement of Restricted Stock Units for Payroll Taxes Represents amount of repurchase and retirement of restricted stock units during the reporting period for payroll taxes. Repurchase and retirement of restricted stock units for payroll taxes Repurchase and retirement of restricted stock units for payroll taxes (in shares) Repurchase and Retirement of Restricted Stock Units for Payroll Taxes in Shares Represents repurchase and retirement of restricted stock units (shares) during the reporting period for payroll taxes. Gains (Losses) on Extinguishment of Debt [Cash Flow Impact] Loss on extinguishment of debt, net Represents the amount of difference between the fair value of payments made and the carrying amount of the debt at the time of its extinguishment and the cash flow impact thereon. Capitalization of Interest to Principal Capitalization of payment in kind Represents the capitalization of interest charges to principal and the cash flow impact thereon. Accretion of debt premiums Amortization of Debt Premiums Represents adjustment of amortization of debt discount premiums during the reporting entity. Cash paid during the year for: Cash Paid During the Period [Abstract] This element represents the fair value of stock issued in exchange of preferred stock in non cash financing activities. Common Stock Issued in Exchange for Preferred Stock Common stock issued in exchange for Series B Preferred Stock Common stock issued for restricted stock units Common Stock Issued for Restricted Stock Units Represents common stock issued for restricted stock units by the reporting entity. Premium related to Term B Loan issued in debt exchange Premium Related to Loan Issued in debt Exchange Represents non cash premium related to term loan issued in exchange of debt of the reporting entity. Issuance of Convertible Debentures Issuance of 2014 convertible debentures Represents the fair value of convertible debentures which would be considered as potential equity shares over the long term forming part of non cash financing activity. Common Stock Issued in Exchange for Debentures Common stock issued in exchange for 2024 debentures Represents the potential equity shares that would be issued in exchange of debentures over the long term forming part of non cash financing activities. Preferred Stock Issued in Exchange for Debentures Preferred stock - Series B issued in exchange for 2024 debentures Represents the potential preferred stock that would be issued in exchange of debentures over the long term forming a part of non cash financing activities. Compound Embedded Derivative Issued in Exchange for Debentures Compound embedded derivative issued in exchange for 2024 debentures Represents embedded derivatives which are hybrid instruments issued in exchange for debentures forming a part of non cash financing activities. Common stock issued in exchange for 2014 debentures Common Stock Issued in Exchange for Debentures 2 Represents non cash effect of common stock issued in exchange for debentures of the reporting entity. Prepayment Fee on Senior Debt Prepayment fee on senior debt Represents the cash outflow on account of prepayment fees incurred which is equal to specified percentage of the aggregate amount of principal amount that is prepaid. Repurchase and retirement of restricted stock units for payroll taxes Repurchase and Retirement of Restricted Stock Units for Payroll Taxes Cash Flow Impact Represents cash flow impact as result of repurchase and retirement of restricted stock units for payroll taxes during the reporting period. Cash restricted for payment of senior debt Cash Restricted for Repayment of Debt This element represents use of restricted cash is used for repayment of term loan. Payments of Costs on Sale of Building Transaction cost on sale of building The cash outflow of transaction costs incurred for the purpose of sale of building during the reporting period. Transaction cost on sale of building Supplemental Financial Information Supplemental Financial Information [Text Block] Supplemental Financial Information Represents the entire disclosure related to inventory components, segregation of revenues by business and geographic segments and also details of computation of earnings per share of the company. EXIT AND DISPOSAL COSTS Exit And Disposal Costs Disclosure [Text Block] EXIT AND DISPOSAL COSTS The entire disclosure for exit and disposal costs of the reporting entity. Document and Entity Information CONSOLIDATED BALANCE SHEETS Statement [Table] Statement, Scenario [Axis] Scenario, Unspecified [Domain] Statement Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current assets: Cash and Cash Equivalents, at Carrying Value Cash Cash at beginning of period Cash at end of period Accounts Receivable, Net, Current Accounts receivable, net Inventory, Net Inventory Restricted Cash and Cash Equivalents Restricted cash Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current Total current assets Property, Plant and Equipment, Net Property, plant and equipment, net Other Indefinite-lived Intangible Assets Other intangible assets, net Other Assets, Noncurrent Other assets Assets Total Assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' DEFICIT Liabilities, Current [Abstract] Current liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses and other current liabilities Deferred Revenue, Current Deferred revenue Long-term Debt and Capital Lease Obligations, Current Current portion of debt and capital leases Liabilities, Current Total current liabilities Commitments and Contingencies. Commitments and contingencies, See note 10 Other Liabilities, Noncurrent Other long-term liabilities Long-term Debt, Excluding Current Maturities Long-term debt, net Derivative Liabilities, Noncurrent Compound embedded derivative Convertible Subordinated Debt, Noncurrent Convertible subordinated debt, net of discount Liabilities Total liabilities Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Stockholders' deficit: Common Stock, Value, Issued Common stock, $0.01 par value. 250,000,000 shares authorized; 24,621,616 and 24,470,280 shares outstanding at December 31, 2011 and September 30, 2011, respectively Additional Paid in Capital Additional paid-in-capital Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Total stockholders' deficit Balance Balance Stockholders' deficit: Stockholders' Equity Attributable to Parent [Abstract] Stockholders' Equity Attributable to Noncontrolling Interest Noncontrolling interest Preferred Stock, Value, Issued Preferred stock, $0.01 par value. 10,000,000 shares authorized; Series B Non Cumulative, Convertible, 134,720 shares outstanding at December 31, 2011 and September 30, 2011 Liabilities and Equity Total Liabilities and Stockholders' Deficit Preferred Stock, Par or Stated Value Per Share Preferred stock, par value (in dollars per share) Preferred Stock, Shares Authorized Preferred stock, shares authorized Preferred Stock, Shares Outstanding Preferred stock, shares outstanding Common Stock, Par or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares authorized Common Stock, Shares, Outstanding Common stock, shares outstanding Costs and Expenses [Abstract] Costs and expenses: Cost of Revenue Cost of revenues Research and Development Expense Engineering, research and development Selling, General and Administrative Expense Selling, general and administrative Impairment of goodwill Goodwill, Impairment Loss Goodwill impairment Amortization of Intangible Assets Amortization of intangible assets Costs and Expenses Costs and expenses Exit and disposal costs Business Exit Costs Operating Income (Loss) Loss from operations Nonoperating Income (Expense) [Abstract] Other (income) expense: Interest Expense Interest expense, net Embedded Derivative, Loss on Embedded Derivative (Gain) loss on compound embedded derivative Change in fair value of compound embedded derivative liability Gains (Losses) on Extinguishment of Debt Loss on extinguishment of debt Other Nonoperating Income (Expense) Other expense (income), net Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest Loss before income tax expense Income Tax Expense (Benefit) Income tax expense Loss from continuing operations Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest Income from discontinued operations, net of tax Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest Net Income (Loss) Attributable to Parent Net loss Net loss Preferred Stock Dividends and Other Adjustments Fair value adjustment of Preferred Stock - Series B Net loss per common share - basic Earnings Per Share, Basic [Abstract] Continuing operations - basic (in dollars per share) Income (Loss) from Continuing Operations, Per Basic Share Discontinued operations - basic (in dollars per share) Income (Loss) from Discontinued Operations, Net of Tax, Per Basic Share Earnings Per Share, Basic Net income (loss) per common share - basic (in dollars per share) Net loss per common share - basic (in dollars per share) Net loss per common share - diluted Earnings Per Share, Diluted [Abstract] Continuing operations - diluted (in dollars per share) Income (Loss) from Continuing Operations, Per Diluted Share Discontinued operations - diluted (in dollars per share) Income (Loss) from Discontinued Operations, Net of Tax, Per Diluted Share Earnings Per Share, Diluted Net income (loss) per common share - diluted (in dollars per share) Net loss per common share - diluted (in dollars per share) Weighted average common shares outstanding: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted Average Number of Shares Outstanding, Basic Weighted average common shares outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Diluted Weighted average common shares outstanding - diluted (in shares) Net loss available to common stockholders Net Income (Loss) Available to Common Stockholders, Basic Revenues [Abstract] Net revenues: Sales Revenue, Goods, Net Product revenues Net revenues Revenues Net revenues Earnings Per Share, Basic and Diluted [Abstract] Net loss per common share - basic and diluted Income (Loss) from Continuing Operations, Per Basic and Diluted Share Continuing operations (in dollars per share) Income (Loss) from Discontinued Operations, Net of Tax, Per Basic and Diluted Share Discontinued operations (in dollars per share) Earnings Per Share, Basic and Diluted Net loss per common share - basic and diluted (in dollars per share) CONSOLIDATED STATEMENTS OF OPERATIONS Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity Shares, Outstanding Balance (in shares) Balance (in shares) Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition Compensation expense related to stock options, awards and ESPP Residual value allocated to the equity conversion feature Stock Issued During Period, Value, Conversion of Units Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature Conversion of Series B Preferred Shares Release of restricted stock units Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures Release of restricted stock units (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures Distribution to minority interest holders Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders Distribution to minority interest holders Stockholders' Equity, Period Increase (Decrease) Stockholders' Equity, Period Increase (Decrease) Stock Issued During Period, Shares, Period Increase (Decrease) Stock Issued During Period, Shares, Period Increase (Decrease) Stock issued pursuant to debt restructuring Stock Issued During Period, Value, New Issues Stock Issued During Period, Shares, New Issues Stock issued pursuant to debt restructuring (in shares) Adjustments to Additional Paid in Capital, Other Debt restructuring costs Stock Issued During Period, Value, Conversion of Convertible Securities Conversion of 8% Debentures Stock Issued During Period, Shares, Conversion of Convertible Securities Conversion of 8% Debentures (in shares) Extinguishment of Debt, Gain (Loss), Income Tax Tax expense on debt transaction Statement, Equity Components [Axis] Equity Component [Domain] Total Vitesse Semiconductor Corporation Stockholders' Deficit Parent [Member] Preferred Stock Preferred Stock [Member] Common Stock Common Stock [Member] Additional Paid-in-Capital Additional Paid-in Capital [Member] Accumulated Deficit Retained Earnings [Member] Non Controlling Interest Noncontrolling Interest [Member] CONSOLIDATED STATEMENTS OF STOCKHOLDERS' DEFICIT Adjustments, Noncash Items, to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash provided by (used in) operating activities: Depreciation, Depletion and Amortization Depreciation and amortization Share-based Compensation Stock-based compensation Gain on conversion of debt Gain (Loss) on Sale of Debt Investments Gain on disposal of fixed assets Gain (Loss) on Disposition of Assets Amortization of Financing Costs Amortization of debt issuance costs Amortization of Debt Discount (Premium) Amortization of debt discounts Other Noncash Income (Expense) Other Loss on asset impairment Asset Impairment Charges Realized loss on investments Gain (Loss) on Sale of Investments Provision for Doubtful Accounts Allowance for doubtful accounts Increase (Decrease) in Operating Capital [Abstract] Change in operating assets and liabilities: Increase (Decrease) in Accounts Receivable Accounts receivable Increase (Decrease) in Inventories Inventory Increase (Decrease) in Prepaid Expense and Other Assets Prepaids and other assets Increase (Decrease) in Accounts Payable Accounts payable Increase (Decrease) in Accrued Liabilities Accrued expenses and other liabilities Increase (Decrease) in Deferred Revenue Deferred revenue Increase (Decrease) in Restricted Cash Restricted cash Supplemental Cash Flow Information [Abstract] Supplemental disclosure of non cash transactions: Interest Paid Interest Income Taxes Paid Income taxes Noncash Investing and Financing Items [Abstract] Non cash investing and financing activites: Residual value allocated to the equity conversion feature Conversion of Stock, Amount Issued Shares issued pursuant to class-action settlement Stock Issued Purchase of assets in exchange for future obligations Capital Expenditures Incurred but Not yet Paid Repayments of Convertible Debt Payment of convertible debentures Repayments of Senior Debt Payment of senior debt Payments of Stock Issuance Costs Equity issuance costs Payments of Debt Issuance Costs Debt issuance costs Repayments of Long-term Capital Lease Obligations Capital lease obligations Payments to Acquire Property, Plant, and Equipment Capital expenditures Other Payments for (Proceeds from) Other Investing Activities Sale of Colorado building Proceeds from Sale of Buildings CONSOLIDATED STATEMENTS OF CASH FLOWS THE COMPANY AND ITS SIGNIFICANT ACCOUNTING POLICIES Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] THE COMPANY AND ITS SIGNIFICANT ACCOUNTING POLICIES COMPUTATION OF NET LOSS PER SHARE Earnings Per Share [Text Block] COMPUTATION OF NET LOSS PER SHARE DETAILS OF CERTAIN FINANCIAL STATEMENT COMPONENTS Supplemental Balance Sheet Disclosures [Text Block] DETAILS OF CERTAIN FINANCIAL STATEMENT COMPONENTS DEBT Debt Disclosure [Text Block] DEBT FAIR VALUE MEASUREMENTS AND DERIVATIVE LIABILITY Fair Value Disclosures [Text Block] FAIR VALUE MEASUREMENTS AND DERIVATIVE LIABILITY STOCKHOLDERS' EQUITY Stockholders' Equity Note Disclosure [Text Block] STOCKHOLDERS' EQUITY STOCK BASED COMPENSATION Disclosure of Compensation Related Costs, Share-based Payments [Text Block] STOCK BASED COMPENSATION INCOME TAXES Income Tax Disclosure [Text Block] INCOME TAXES RESTRUCTURING AND IMPAIRMENT CHARGES Restructuring, Impairment, and Other Activities Disclosure [Text Block] RESTRUCTURING AND IMPAIRMENT CHARGES SEGMENT AND GEOGRAPHIC INFORMATION Segment Reporting Disclosure [Text Block] SEGMENT AND GEOGRAPHIC INFORMATION RETIREMENT SAVINGS PLAN Pension and Other Postretirement Benefits Disclosure [Text Block] RETIREMENT SAVINGS PLAN COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] COMMITMENTS AND CONTINGENCIES QUARTERLY FINANCIAL DATA (UNAUDITED) Quarterly Financial Information [Text Block] QUARTERLY FINANCIAL DATA (UNAUDITED) SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS Subsequent Events Subsequent Events [Text Block] Subsequent Events GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] GOODWILL AND INTANGIBLE ASSETS Entity Registrant Name Entity Central Index Key Document Type Document Period End Date Amendment Flag Amendment Description Current Fiscal Year End Date Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Filer Category Entity Public Float Entity Common Stock, Shares Outstanding Document Fiscal Year Focus Document Fiscal Period Focus Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Total stockholders' deficit Balance Balance Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Cash flows provided by (used in) operating activities: Net Cash Provided by (Used in) Operating Activities, Continuing Operations Net cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Cash flows used in investing activities: Net Cash Provided by (Used in) Investing Activities, Continuing Operations Net cash used in investing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Cash flows used in financing activities: Net Cash Provided by (Used in) Financing Activities, Continuing Operations Net cash used in financing activities Net Cash Provided by (Used in) Continuing Operations Net decrease in cash Comprehensive Income [Member] Comprehensive income Interest paid in kind Paid-in-Kind Interest