Sycamore Networks (SCMR) 10-K 18 Oct 13 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Jul. 31, 2013	Oct. 14, 2013	Jan. 26, 2013
Document Information [Line Items]
Document Type	10-K
Amendment Flag	FALSE
Document Period End Date	31-Jul-13
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	FY
Trading Symbol	SCMR
Entity Registrant Name	SYCAMORE NETWORKS INC
Entity Central Index Key	1092367
Current Fiscal Year End Date	-24
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		28,882,093
Entity Public Float			$46,419,444

Consolidated_Balance_Sheets_Go

Consolidated Balance Sheets (Going Concern Basis) (USD $)	Jul. 31, 2012
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$136,654
Short-term investments	234,965
Accounts receivable, net of allowance for doubtful accounts of $42 at July 31, 2012	7,785
Inventories, net	8,469
Prepaid expenses and other current assets	1,589
Total current assets	389,462
Property and equipment, net	4,276
Long-term investments	67,774
Other assets	422
Total assets	461,934
Current liabilities:
Accounts payable	1,432
Accrued compensation	2,836
Accrued warranty	1,072
Accrued expenses	2,248
Deferred revenue	7,871
Other current liabilities	813
Total current liabilities	16,272
Long-term deferred revenue	1,469
Long-term liabilities	1,962
Total liabilities	19,703
Commitments and contingencies (Notes 6 and 13)
Stockholders' equity:
Preferred stock, $.01 par value; 5,000 shares authorized, none issued and outstanding at July 31, 2012
Common stock, $.001 par value; 250,000 shares authorized, 28,879 shares issued and outstanding at July 31, 2012	29
Additional paid-in capital	1,589,357
Accumulated deficit	-1,146,882
Accumulated other comprehensive loss	-273
Total stockholders' equity	442,231
Total liabilities and stockholders' equity	$461,934

Consolidated_Balance_Sheets_Go1

Consolidated Balance Sheets (Going Concern Basis) (Parenthetical) (USD $)	Jul. 31, 2012
In Thousands, except Per Share data, unless otherwise specified
Accounts receivable, allowance for doubtful accounts	$42
Preferred stock, par value	$0.01
Preferred stock, shares authorized	5,000
Preferred stock, issued
Preferred stock, outstanding
Common stock, par value	$0.00
Common stock, shares authorized	250,000
Common stock, shares issued	28,879
Common stock, shares outstanding	28,879

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (Going Concern Basis) (USD $)	8 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Revenue
Cost of revenue	193	225
Gross profit (loss)	-193	-225
Operating expenses:
Research and development	4,806	14,068
Sales and marketing	1,808	3,094
General and administrative	3,015	5,916
Asset impairment		790
Restructuring	2,946
Total operating expenses	12,575	23,868
Loss from continuing operations	-12,768	-24,093
Interest and other income, net	189	1,098
Loss before income taxes	-12,579	-22,995
Income tax benefit	-4,356	-3,784
Net loss from continuing operations	-8,223	-19,211
Discontinued operations:
Net income (loss) from discontinued operations, net of tax	-2,373	6,287
Gain on sale of discontinued operations, net of tax	7,084
Gain from discontinued operations	4,711	6,287
Net loss	($3,512)	($12,924)
Basic and diluted net income (loss) per share:
Continuing operations	($0.28)	($0.67)
Discontinued operations	$0.16	$0.22
Net income (loss) per share	($0.12)	($0.45)
Basic and diluted weighted average shares outstanding	28,882	28,807
Cash distributions paid per common share	$14.31

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (Going Concern Basis) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Net loss	($3,512)	($12,924)
Changes in unrealized gain (loss) on investments and other	-273	165
Comprehensive loss	($3,785)	($12,759)

Consolidated_Statements_of_Sto

Consolidated Statements of Stockholders' Equity (Going Concern Basis) (USD $)	Total	Common stock	Additional paid-in capital	Accumulated Deficit	Accumulated other comprehensive income (loss)
In Thousands
Beginning Balance at Jul. 31, 2011	$448,757	$29	$1,583,124	($1,133,958)	($438)
Beginning Balance (in shares) at Jul. 31, 2011		28,739
Net loss	-12,924			-12,924
Unrealized gain on investments and other	165				165
Issuance of common stock under employee and director stock plans (in shares)		140
Issuance of common stock under employee and director stock plans	2,444		2,444
Share-based compensation expense	3,789		3,789
Ending Balance at Jul. 31, 2012	442,231	29	1,589,357	-1,146,882	-273
Ending Balance (in shares) at Jul. 31, 2012		28,879
Beginning Balance at Mar. 23, 2012
Net loss	-3,512			-3,512
Unrealized gain on investments and other	276		3		273
Issuance of common stock under employee and director stock plans (in shares)		3
Issuance of common stock under employee and director stock plans	38		38
Cash distribution	-413,302		-413,302
Share-based compensation expense	1,275		1,275
Ending Balance at Mar. 23, 2013	$27,006	$29	$1,177,371	($1,150,394)
Ending Balance (in shares) at Mar. 23, 2013		28,882

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (Going Concern Basis) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Cash flows from operating activities:
Net loss	($3,512)	($12,924)
Adjustments to reconcile net loss to net cash used in operating activities:
Gain on sale of discontinued operations	-7,084
Tax benefit on sale of discontinued operations	-4,387
Depreciation and amortization	991	2,755
Share-based compensation	1,275	3,789
Asset impairments		790
Adjustments to provision for excess and obsolete inventory	144	596
Adjustments to allowance for doubtful accounts		-30
Changes in operating assets and liabilities:
Accounts receivable	-146	1,009
Inventories	-864	2,284
Prepaids and other assets	-420	49
Deferred revenue	-2,103	-1,613
Accounts payable	-594	-232
Accrued expenses and other liabilities	-3,768	862
Accrued restructuring costs	296	-294
Net cash used in operating activities	-20,172	-2,959
Cash flows from investing activities:
Purchases of property and equipment	-1	-1,655
Proceeds from sale of discontinued operations	19,015
Purchases of investments		-308,872
Proceeds from sales of investments	196,872	16,819
Proceeds from maturities of investments	100,720	370,112
Net cash provided by investing activities	316,606	76,404
Cash flows from financing activities:
Payment of cash distributions to common stockholders	-413,302
Proceeds from issuance of common stock	38	2,444
Net cash (used in) provided by financing activities	-413,264	2,444
Net increase (decrease) in cash and cash equivalents	-116,830	75,889
Cash and cash equivalents, beginning of period	136,654	60,765
Cash and cash equivalents, end of period	19,824	136,654
Supplemental cash flow information:
Cash paid for income taxes	$1,176	$257

Description_of_Business

Description of Business	12 Months Ended
	Jul. 31, 2013
Description of Business	1	Description of Business
	Prior to February 1, 2013, the Company developed and marketed Intelligent Bandwidth Management solutions for fixed line and mobile network operators worldwide and provided services associated with such products (the “Intelligent Bandwidth Management Business”), and, prior to November 1, 2012, the Company also developed and marketed a mobile broadband optimization solution (the “IQstream Business”). As used in these Notes to the Consolidated Financial Statements, “Sycamore,” “we,” “us,” or “our” refers collectively to Sycamore Networks, Inc. and its subsidiaries.
	On October 23, 2012, the Company entered into an Asset Purchase and Sale Agreement (the “Asset Sale Agreement”) with Sunrise Acquisition Corp. (now known as Coriant America Inc.), a portfolio company of Marlin Equity Partners (“Buyer”), pursuant to which Buyer agreed to acquire substantially all of the assets (the “Asset Sale”) primarily related to the Intelligent Bandwidth Management Business, including inventory, fixed assets, accounts receivable, intellectual property rights (other than patents and patent applications), contracts, certain real estate leases, the Company’s subsidiaries in Shanghai, the Netherlands and Japan, and certain shared facilities and assets for $18.75 million in cash, subject to a working capital adjustment, and the assumption by Buyer of certain liabilities. The Company’s stockholders authorized the Asset Sale at a Special Meeting of Stockholders held on January 29, 2013 (the “Special Meeting”), and the Asset Sale was completed on January 31, 2013 (the transfer of the Company’s equity interests in its Shanghai subsidiary, which was subject to the receipt of government approval, occurred on March 25, 2013). Upon the closing of the Asset Sale, Buyer acquired substantially all of the Company’s operating assets relating to the Intelligent Bandwidth Management Business, including the Company’s accounts receivable, inventories and prepaid and other assets, and assumed most of the Company’s remaining current liabilities, including substantially all of the Company’s deferred revenue and accrued warranty obligations. On April 22, 2013, the Company commenced litigation against Buyer and certain of its affiliates with respect to certain amounts due under the Asset Sale Agreement. In connection with such litigation, on May 28, 2013, the Company and such parties reached an agreement pursuant to which (1) the Company agreed to dismiss the pending litigation without prejudice, (2) Buyer paid certain undisputed amounts owed to the Company and (3) the parties agreed to submit the remaining issues relating to amounts in dispute of approximately $1.4 million to arbitration for resolution by a neutral accountant. Following receipt of the aforementioned undisputed amounts, the Company dismissed the pending lawsuit without prejudice. The matter remains pending before the neutral accountant. For additional information concerning this matter, see Note 13. “Commitments and Contingencies.”
	In conjunction with the approval of the Asset Sale Agreement, the Company’s Board of Directors (the “Board”) also approved the liquidation and dissolution of the Company (the “Dissolution”) pursuant to a Plan of Complete Liquidation and Dissolution (the “Plan of Dissolution”) following the completion of the Asset Sale. The Plan of Dissolution was also approved by the stockholders at the Special Meeting and, following a review of the Company’s strategic alternatives for all of the Company’s assets and available options for providing value to the Company’s stockholders, the Company filed a certificate of dissolution with the Secretary of State of the State of Delaware (the “Certificate of Dissolution”) on March 7, 2013. For additional information regarding the Dissolution, please see the Company’s Definitive Proxy Statement on Schedule 14A filed with the SEC on December 28, 2012 and its Current Report on Form 8-K filed with the SEC on March 8, 2013.
	In connection with the filing of the Certificate of Dissolution, on March 7, 2013 the Company closed its stock transfer books and discontinued recording transfers of its common stock, $0.001 par value per share (the “Common Stock”). The Common Stock, and stock certificates evidencing the shares of Common Stock, are no longer assignable or transferable on the Company’s books, other than transfers by will, intestate succession or operation of law. The Company also submitted a request to The NASDAQ Stock Market (“NASDAQ”) to suspend trading of the Common Stock on The NASDAQ Global Select Market effective as of the close of trading on March 7, 2013 and, on March 15, 2013, the Company filed a Form 25 with the SEC to delist its Common Stock, which became effective prior to the opening of trading on March 25, 2013. Since the suspension of trading of the Common Stock on The NASDAQ Global Select Market, shares of our Common Stock held in street name with brokers have been trading in the over-the-counter market on the Pink Sheets, an electronic bulletin board established for unlisted securities.
	As a result of the completion of the Asset Sale and the Company’s previously announced halting of further development and marketing in connection with the IQstream Business, the Company no longer has any operating assets or revenue. Since the filing of the Certificate of Dissolution, the Company has been operating in accordance with the Plan of Dissolution, which contemplates an orderly wind down of the Company’s business, including the disposition of the IQstream Business, the sale or monetization of the Company’s other remaining non-cash assets, and the satisfaction or settlement of its liabilities and obligations, including contingent liabilities and claims. As of July 31, 2013, the Company had three remaining employees.
	The Company’s primary non-cash assets consist of its intellectual property and other assets relating to the IQstream Business, patents and patent applications related to or used in the Intelligent Bandwidth Management Business, our real estate holdings in Tyngsborough, Massachusetts, our investments in private companies and certain other assets that were not sold to Buyer in the Asset Sale. On March 27, 2013, in light of the Board’s views as to the prospects for the IQstream Business, the Board determined to terminate all of the remaining IQstream Employees, effective April 1, 2013. The Company continues to pursue available options with respect to the assets of the IQstream Business, including a possible sale of the intellectual property, equipment and other assets of the IQstream Business, either together or separately.
	On September 5, 2013, the Company terminated an agreement to sell approximately 102 acres of undeveloped land located in Tyngsborough, Massachusetts to Tynsborough Commons, LLC (“Tyngsborough Commons”) for a total purchase price of $3.5 million due to Tyngsborough Commons’ failure to either close the sale on or before August 30, 2013 or pay to the Company the $100,000 additional deposit required to exercise the right to extend the period for closing the sale by 45 days, as provided in the agreement. As a result of the termination, and pursuant to the terms of the agreement, the Company retained as liquidated damages $125,000 in deposits previously paid by Tyngsborough Commons. The Company intends to continue to pursue available options with respect to the land, but there can be no assurance as to the amount of consideration the Company may be able to obtain for the land or as to any time frame within which a potential sale might occur.
	As of October 18, 2013, the Company had received 43 United States patents and had pending 7 United States patent applications. Of the United States patents that have been issued, the earliest any will expire is February 2019. Forty of these patents and two patent applications, in each case relating to or used in the Intelligent Bandwidth Management Business, were licensed to Buyer in connection with the Asset Sale. The Company is currently considering available options with respect to its patent portfolio.
	During the Dissolution period, the Company will continue to pursue the liquidation to cash of its remaining non-cash assets for possible distribution to our stockholders. Subject to uncertainties inherent in the winding up of the Company’s business, we expect to make one or more additional liquidating distributions as promptly as practicable following the liquidation to cash of our non-cash assets and after payment of, or provision for, outstanding claims in accordance with Delaware law. However, the Dissolution process and the payment of any distribution to stockholders involve substantial risks and uncertainties. Accordingly, it is not possible to predict the timing or aggregate amount which will ultimately be distributed to stockholders, and no assurance can be given that the distributions will equal or exceed our estimate of net assets presented in the Statement of Net Assets included in this Annual Report on Form 10-K.

Summary_of_Significant_Account

Summary of Significant Accounting Policies	12 Months Ended
	Jul. 31, 2013
Summary of Significant Accounting Policies	2	Summary of Significant Accounting Policies
	The accompanying financial statements reflect the application of certain significant accounting policies as described below. The Company believes these accounting policies are significant because they affect judgments, assumptions and estimates we used in preparing our consolidated financial statements. Changes in these estimates can materially affect our net assets, changes in net assets, results of operations and discontinued operations.
	Basis of Consolidation and Presentation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. As part of the Asset Sale, the Company sold its subsidiaries in Shanghai, the Netherlands and Japan. In conjunction with the Dissolution, the Company merged its Delaware and Massachusetts subsidiaries into Sycamore Networks, Inc.
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates.
	The condensed consolidated financial statements for the eight month period ended March 23, 2013 and for the twelve months ended July 31, 2012 were prepared on the going concern basis of accounting, which contemplates realization of assets and satisfaction of liabilities in the normal course of business. Following the Company’s filing of the Certificate of Dissolution, on March 24, 2013 the Company adopted the liquidation basis of accounting. See “Liquidation Basis of Accounting” below for further information regarding the Company’s adoption of the liquidation basis of accounting.
	Cash Distributions
	The Company paid a total of $413.3 million in cash distributions to stockholders in fiscal 2013. As a result of having an accumulated deficit, the cash distributions were recorded as reductions to additional paid-in capital.
	Liquidation Basis of Accounting
	On March 24, 2013, the beginning of the fiscal month following the filing of the Certificate of Dissolution, the Company began reporting on a liquidation basis of accounting. Under the liquidation basis of accounting, assets are stated at their estimated net realizable values and liabilities are stated at their estimated settlement amounts. Recorded liabilities include estimates of expected costs associated with carrying out the Plan of Dissolution. These estimates will be reviewed periodically and adjusted as appropriate.
	The valuation of assets at their net realizable value and liabilities at their anticipated settlement amounts represent estimates, based on present facts and circumstances, of the net realizable value of the assets and the costs associated with carrying out the Plan of Dissolution. The actual values and costs associated with carrying out the Plan of Dissolution may differ from amounts reflected in the financial statements because of the inherent uncertainty in estimating future events. These differences may be material. In particular, the estimates of costs will vary with the length of time necessary to complete the Dissolution process and to resolve any claims. Accordingly, it is not possible to predict the timing or aggregate amount which will ultimately be distributed to stockholders, and no assurance can be given that the distributions will equal or exceed the estimate of net assets presented in the accompanying Statement of Net Assets.
	Upon transition to the liquidation basis of accounting on March 24, 2013, the Company recorded the following adjustments to record assets at their estimated net realizable values:
	Initial adjustment of assets to estimated net realizable value		Amount
	Write up of assets		$	3,393
	Write down of assets			(510	)
			$	2,883
	The Company’s initial write up of assets related to certain non-cash assets of Sycamore, including intellectual property and other assets relating to the IQstream Business, patents and patent applications related to or used in the Intelligent Bandwidth Management Business, our real estate holdings in Tyngsborough, Massachusetts, our investments in private companies and certain other fixed assets.
	The write down of assets related to certain prepaid expenses and other assets that have no future net realizable value.
	Subsequent to the initial adjustments on March 24, 2013, the Company recorded adjustments to reduce our estimate of the net realizable value for our land in Tyngsborough, Massachusetts and for our other assets. The reduction in our estimate of net realizable value for the Tyngsborough land is a result of the termination of the Restated Purchase and Sale Agreement with Tyngsborough Commons. For additional information concerning the termination of this agreement, see Note 1. “Business”. The reduction in our estimate of net realizable value for our other assets primarily relates to a reduction in the net realizable value of our patent portfolio. Based on recent negotiations and discussions with prospective purchasers of the patents, we have determined that we cannot reasonably provide an estimate of the net realizable value of the patents at this time and, accordingly, have assigned no value to the patents for the purposes of the Statement of Net Assets. The adjustments are based on our current best estimate of the net realizable value of these assets, which is subject to substantial risk and uncertainties.
	On April 22, 2013, the Company commenced litigation against Buyer and certain of its affiliates with respect to certain amounts due under the Asset Sale Agreement. In connection with such litigation, on May 28, 2013, the Company and such parties reached an agreement pursuant to which (1) the Company agreed to dismiss the pending litigation without prejudice, (2) Buyer paid certain undisputed amounts owed to the Company and (3) the parties agreed to submit the remaining issues relating to amounts in dispute of approximately $1.4 million to arbitration for resolution by a neutral accountant. Following receipt of the aforementioned undisputed amounts, the Company dismissed the pending lawsuit without prejudice. The matter remains pending before the neutral accountant. Because of the unpredictability of any settlement amount or ruling in favor of the Company by a neutral accountant, the Company is currently unable to estimate the net realizable value of any proceeds in connection with this matter. Accordingly, the Company has not recorded any receivables for the amount at issue. If the Company is successful in its efforts to recover all or any portion of the $1.4 million from Buyer, the Company will record the amount of any settlement, decision or order by the neutral accountant at the time thereof, which may result in an aggregate increase to net assets. For additional information concerning this matter, see Note 13. “Commitments and Contingencies.”
	The Company also accrued estimated costs expected to be incurred in carrying out the Plan of Dissolution. Under the DGCL, the Dissolution period will last for a minimum of three years. The Company was required to make certain estimates and exercise judgment in determining the accrued costs of liquidation as of March 24, 2013. Upon transition to the liquidation basis of accounting, the Company accrued the following costs expected to be incurred in the Dissolution:
	Accrued costs of liquidation		Amount
	Restructuring		$	3,309
	Compensation			3,539
	Professional fees			3,672
	Other expenses associated with wind down activities			2,725
	Insurance			1,500
			$	14,745
	The accrued costs of liquidation do not include an estimate of the amount that the Company may be required to pay under the Asset Sale Agreement to satisfy our indemnification obligations, if any, to Buyer and its related parties, or any other amount we may be required to pay to Buyer under the Asset Sale Agreement. The Company’s aggregate indemnification liability for breaches of representations and warranties is limited to approximately $2.8 million. The Company’s indemnification obligations for breaches of representations and warranties expire no later than twelve months following the closing date of the Asset Sale, which was January 31, 2013. In the event Buyer is able to successfully assert indemnification claims against the Company, the Company will record the amount of any such liability at the time thereof, resulting in a decrease to net assets.
	Subsequent to the initial accrual for estimated costs during the Dissolution period upon transition to the liquidation basis of accounting, the Company reduced its accrual for estimated costs of liquidation by $1.6 million. The reduction reflects our updated estimate of costs related to compensation, professional fees, other expenses and insurance. These estimated costs will continue to be reviewed periodically and adjusted as appropriate. The table below summarizes the reserve for estimated costs during the Dissolution period as of July 31, 2013:
			Amount
	Compensation		$	2,396
	Professional fees			2,637
	Other expenses associated with wind down activities			1,970
	Insurance			1,333
			$	8,336
	Cash Equivalents and Investments
	Cash equivalents are short-term, highly liquid investments with original or remaining maturity dates of three months or less at the date of acquisition. Cash equivalents are carried at cost plus accrued interest, which approximates fair market value. The Company’s investments are classified as available-for-sale and are recorded at fair value with any unrealized gain or loss recorded as an element of stockholders’ equity. The fair value of investments is determined based on quoted market prices at the reporting date for those investments. The Company would recognize an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time and extent to which the fair value has been less than the Company’s cost basis, the financial condition and near-term prospects of the investee, and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. As of July 31, 2013 and 2012, aggregate cash and cash equivalents and short and long term investments consisted of (in thousands):
	July 31, 2013:		Amortized			Gross			Gross			Fair Market
			Cost			Unrealized			Unrealized			Value
						Gains			Losses
	Cash and cash equivalents		$	21,041		$	—		$	—		$	21,041
	Total		$	21,041		$	—		$	—		$	21,041
	July 31, 2012:		Amortized			Gross			Gross			Fair Market
			Cost			Unrealized			Unrealized			Value
						Gains			Losses
	Cash and cash equivalents		$	136,654		$	—		$	—		$	136,654
	Government securities			302,695			66			(22	)		302,739
	Total		$	439,349		$	66		$	(22	)	$	439,393
	Inventories
	Prior to the Asset Sale, inventories were stated at the lower of cost (first-in, first-out basis) or market (net realizable value).
	Revenue Recognition
	Prior to the Asset Sale, the Company sold primarily bundled hardware and software products that function together to deliver the tangible products’ essential functionality (referred to herein collectively as “hardware” products), as well as services related to those hardware products. Services included maintenance arrangements for the products with terms typically of one year, as well as to a lesser extent, professional services and training services. The Company sold a limited amount of stand-alone software products.
	The Company recognized revenue when all of the following criteria were met:
		•		Persuasive evidence of an arrangement existed. Evidence of an arrangement generally consisted of sales contracts or agreements and customer purchase orders;
		•		Delivery occurred. Delivery occurred when title and risk of loss were transferred to the customer or the Company received written evidence of customer acceptance, when applicable, to verify delivery or performance;
		•		Sales price was fixed or determinable. The Company assessed whether the sales price was fixed or determinable based on payment terms and whether the sales price was subject to refund or adjustment; and
		•		Collectability was reasonably assured. Collectability was assessed based on the creditworthiness of the customer as determined by credit checks and the customer’s payment history with the Company.
	The Company adopted Accounting Standards Update (“ASU”) No. 2009-13, Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements (“ASU 2009-13”) and ASU No. 2009-14, Software (Topic 985): Certain Revenue Arrangements That Include Software Elements (“ASU 2009-14”) on a prospective basis as of the beginning of fiscal 2011 for new and materially modified arrangements originating on or after August 1, 2010. ASU 2009-14 amends industry-specific revenue accounting guidance for software and software-related transactions to exclude from its scope tangible products containing software components and non-software components that function together to deliver the product’s essential functionality. As a result of adopting the new guidance, nearly all of the Company’s products and related services were no longer accounted for under the software revenue recognition rules, Accounting Standards Codification (“ASC”) Topic 985.
	Pursuant to the guidance of ASU 2009-13, when a sales arrangement contains multiple elements, particularly hardware products and related services, revenue is allocated to each element based on a selling price hierarchy, using a relative selling price allocation approach. The selling price for a deliverable was based on our vendor-specific objective evidence (“VSOE”), if available, third-party evidence (“TPE”) if VSOE was not available, or best estimate of selling price (“BESP”) if neither VSOE nor TPE was available. The Company established VSOE for its services based on the price charged for each service element when sold separately. The Company was typically not able to determine TPE for its hardware products or services because the Company’s various product and service offerings contained a significant level of differentiation and, therefore, comparable pricing of competitors’ products and services with similar functionality could not be obtained. The Company determined BESP for products and services based on an assessment of multiple factors, including, but not limited to, pricing practices, customer classes and distribution channels. We then recognized revenue allocated to each deliverable in accordance with the four criteria identified above. Our multiple element arrangements typically included both products and services, with maintenance being the most common service element. Maintenance services were delivered over the contractual support period which varied in length, but typically was twelve months. In those limited instances where both hardware and stand-alone software products were included in a multiple element arrangement, the hardware and related services and the software and related services were separated and then allocated a pro rata portion of the total transaction value based upon BESP of each of the hardware and software groups, using a relative selling price allocation approach. The hardware group was then accounted for under the ASC Topic 605 guidance described above and the software group was accounted for under the ASC Topic 985 guidance.
	Service revenues included revenue from maintenance, training, and installation services. Revenue from maintenance service contracts was deferred and recognized ratably over the contractual support period. Revenue from training and installation services was recognized as the services were completed or ratably over the service period.
	Share-Based Compensation
	Upon effectiveness of the Dissolution, the Company cancelled all outstanding stock option awards under the Company’s stock plans. During the period when the Company had stock-based compensation programs, the Company accounted for share-based compensation expense for all share-based payment awards made to employees and directors based on estimated fair values. The Company estimated the fair value of share-based options on the date of grant using the Black Scholes pricing model, which was affected by our stock price as well as assumptions regarding a number of complex and subjective variables. These variables included our expected stock price volatility over the term of the awards, actual and projected employee option exercise behaviors, risk free interest rate and expected dividends. The Company was also required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differed from those estimates.
	Impairment of Long-Lived Assets
Under the going concern basis of accounting, the Company evaluated the recoverability of long-lived assets whenever events or changes in circumstances indicated that the carrying amount of an asset may not be fully recoverable. This periodic review may have resulted in an adjustment of estimated depreciable lives or asset impairment. When indicators of impairment were present, the carrying values of the asset were evaluated in relation to the operating performance and future undiscounted cash flows of the underlying business. If the future undiscounted cash flows were less than the book value, impairment existed. The impairment was measured as the difference between the book value and the fair value of the underlying asset. Fair values were based on estimates of market prices and assumptions concerning the amount and timing of estimated future cash flows and assumed discount rates, reflecting varying degrees of perceived risk.
Property and Equipment
Under the liquidation basis of accounting, property and equipment are stated at their estimated net realizable values. Under the going concern basis of accounting, property and equipment were stated at cost and depreciated over the estimated useful lives of the assets using the straight-line method, based upon the following asset lives:
Computer and telecommunications equipment		2 to 3 years
Computer software		3 years
Furniture and office equipment		5 years
Leasehold improvements		Shorter of lease term or useful life of asset
The cost of significant additions and improvements were capitalized and depreciated while expenditures for maintenance and repairs were charged to expense as incurred. Costs related to internal use software were capitalized. Upon retirement or sale of an asset, the cost and related accumulated depreciation of the assets were removed from the accounts and any resulting gain or loss is reflected in the determination of net income or loss. See Note 5. “Property and Equipment.”
Research and Development and Software Development Costs
Under the going concern basis of accounting, the Company’s research and development costs were expensed as incurred. Software development costs incurred prior to the establishment of technological feasibility were charged to expense. Technological feasibility was demonstrated by the completion of a working model. Software development costs incurred subsequent to the establishment of technological feasibility were capitalized until the product was available for general release to customers and amortized based on the greater of (i) the ratio that current gross revenue for a product bears to the total of current and anticipated future gross revenue for that product or (ii) the straight-line method over the remaining estimated life of the product. The period between achieving technological feasibility and the general availability of the related products was short and software development costs qualifying for capitalization were not material. Accordingly, the Company did not capitalize any software development costs.
Income Taxes
Income taxes are accounted for under the liability method. Under this method, deferred tax assets and liabilities are recorded based on temporary differences between the financial statement amounts and the tax bases of assets and liabilities measured using enacted tax rates in effect for the year in which the differences are expected to reverse. The Company periodically evaluates the realization of its net deferred tax assets and records a valuation allowance if, based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
We account for uncertain tax positions by prescribing the minimum recognition threshold a tax position must meet before being recognized in the Company’s financial statements. Generally, recognition is limited to situations where, based solely on the technical merits of the tax position, the Company has determined that the tax position is more likely than not to be sustained on audit.
Concentration of Credit Risks
Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash equivalents and investments. The Company invests its excess cash primarily in deposits with commercial banks, high-quality corporate securities and U.S. government securities.
Allowance for Doubtful Accounts
Prior to the Asset Sale, the Company evaluated its outstanding accounts receivable balances on an ongoing basis to determine whether an allowance for doubtful accounts should be recorded. Activity in the Company’s allowance for doubtful accounts is summarized as follows (in thousands):
		Year Ended July 31,
		2013			2012
Beginning balance		$	42		$	72
Adjustment			(42	)		(30	)
Write off			—			—
Ending balance		$	—		$	42
Accumulated Other Comprehensive Loss
Under the going concern basis of accounting, the unrealized gain or loss on investments was included in accumulated other comprehensive loss for all operating periods presented. For foreign subsidiaries where the functional currency was the local currency, assets and liabilities were translated into U.S. dollars at the current exchange rate on the balance sheet date. Revenue and expenses were translated at average rates of exchange prevailing during each period. Translation adjustments for these subsidiaries, which are immaterial for all periods presented, are included in accumulated other comprehensive income (loss).
Net Loss Per Share
Under the going concern basis of accounting, basic and diluted net loss per share was computed by dividing the net loss for the period by the weighted average number of common shares outstanding during the period less unvested restricted stock. The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share data):
		Eight Months Ended			Year Ended
		March 23,			July 31,
		2013			2012
Net loss		$	(3,512	)	$	(12,924	)
Denominator:
Weighted-average shares of common stock outstanding			28,882			28,807
Weighted-average shares subject to repurchase			—			—
Shares used in per-share calculation—basic			28,882			28,807
Weighted-average shares of common stock outstanding			28,882			28,807
Weighted common stock equivalents			—			—
Shares used in per-share calculation—diluted			28,882			28,807
Net loss per share:
Basic		$	(0.12	)	$	(0.45	)
Diluted		$	(0.12	)	$	(0.45	)
Employee stock options to purchase 9.6 million shares of common stock were not included in the computation of diluted net loss per share for the eight months ended March 23, 2013 because their effect would have been antidilutive. Employee stock options to purchase 10.9 million shares of common stock were not included in the computation of diluted net loss per share for the year ended July 31, 2012 because their effect would have been antidilutive.
Segment Information
The Company’s chief operating decision maker was its former President and Chief Executive Officer. Decisions regarding resource allocation and assessing performance were made at the Company level, as one segment. Prior to the Asset Sale, for the eight months ended March 23, 2013, the geographical distribution of revenue was as follows: United States – 80%, Korea – 5%, and all other countries – 15%. For the year ended July 31, 2012, the geographical distribution of revenue was as follows: United States – 79%, United Kingdom – 6%, and all other countries – 15%.
Recent Accounting Pronouncements
On June 16, 2011, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”), which revises the manner in which entities present comprehensive income in their financial statements. The new guidance requires companies to report components of comprehensive income in either: (1) a continuous statement of comprehensive income; or (2) two separate consecutive statements. ASU 2011-05 does not change the items that must be reported in other comprehensive income. The Company adopted ASU 2011-05 in the first quarter of fiscal 2013 by reporting a separate statement of comprehensive income (loss).
In April 2013, the FASB issued ASU No. 2013-07, Presentation of Financial Statements (Topic 205): Liquidation Basis of Accounting. The new standard addresses when and how an entity should apply the liquidation basis of accounting. The new guidance is effective for entities that determine liquidation is imminent during annual reporting periods beginning after December 15, 2013 and interim reporting periods therein. Entities should apply the requirements prospectively from the day that liquidation becomes imminent. Early adoption is permitted. The Company adopted ASU No. 2013-07 in the third quarter of fiscal 2013. The adoption did not have a material impact on the Company’s application of the liquidation basis of accounting.
In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters. The new standard addresses a parent’s accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or group of assets within a foreign entity or of an investment in a foreign entity. The objective of the update is to resolve the diversity in practice about the appropriate guidance to apply to the release of the cumulative translation adjustment into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or a business within a foreign entity. The update provides that the entire amount of the cumulative translation adjustment associated with the foreign entity would be released when there has been a sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity. This update is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. Early adoption is permitted. The Company adopted ASU No. 2013-05 in the third quarter of fiscal 2013. The adoption did not have a material impact on the Company.

Discontinued_Operations

Discontinued Operations	12 Months Ended
	Jul. 31, 2013
Discontinued Operations	3	Discontinued Operations
	On January 31, 2013, the Company completed the Asset Sale for a total purchase price of $18.75 million in cash and the assumption by Buyer of certain related liabilities. The transfer of the equity interests of the Company’s subsidiary in Shanghai occurred on March 25, 2013.
	The financial results of the Intelligent Bandwidth Management Business have been classified as discontinued operations for all periods presented.
			Eight months ended			Twelve months ended
			March  23,			July  31,
			2013			2012
	Revenue		$	22,266		$	57,285
	Cost of revenue			8,802			24,106
	Operating expenses			14,452			23,044
	Income tax expense			1,385			3,848
	Net income (loss) from discontinued operations, net of tax			(2,373	)		6,287
	Gain on sale of discontinued operations, net of tax			7,084			—
	Total discontinued operations		$	4,711		$	6,287

Inventories

Inventories	12 Months Ended
	Jul. 31, 2013
Inventories	4. Inventories
	Inventories consisted of the following at July 31, 2012 (in thousands):
		2012
	Raw materials	$	3,462
	Work in process		1,082
	Finished goods		3,925
	Total	$	8,469

Property_and_Equipment

Property and Equipment	12 Months Ended
	Jul. 31, 2013
Property and Equipment	5	Property and Equipment
	Property and equipment consisted of the following at July 31, 2012 (in thousands):
			2012
	Computer software and equipment		$	69,517
	Land			3,000
	Furniture and office equipment			775
	Leasehold improvements			5,204
				78,496
	Less accumulated depreciation			(74,220	)
	Total		$	4,276
	Depreciation expense was $0.9 million for the eight months ended March 23, 2013 and $2.6 million for the year ended July 31, 2012.
	Under the going concern basis of accounting, the Company was required to test the recoverability of certain long-lived assets when indicators of impairment were present. In connection with the Company’s pursuit of strategic alternatives, the Company conducted an assessment for recoverability of its long-lived assets in the fourth quarter of fiscal 2012. The Company utilized the cost approach which was supplemented and supported by market research to determine fair value. This approach incorporated the use of historical costs, published trends, market supported depreciation curves and adjustments, including level of asset customization, to estimate fair value. The Company concluded that the net book value of its property and equipment exceeded its estimated fair value. As a result, the Company recorded an asset impairment charge of $0.8 million.
	The Company owns approximately 102 acres of land in Tyngsborough, Massachusetts. This land was recorded at its estimated net realizable value of $2.9 million as of July 31, 2013. For information on our efforts to sell this land, please see Note 1. “Description of Business.”

Commitments

Commitments	12 Months Ended
	Jul. 31, 2013
Commitments	6. Commitments
	Operating Leases
	Following the completion of the Asset Sale and the filing of the Certificate of Dissolution, the Company no longer has any material commitments relating to operating leases. Office space is currently provided to the Company by Buyer pursuant to a transition services agreement. Under the going concern basis of accounting, rent expense under operating leases was $1.1 million for the eight months ended March 23, 2013 and $2.0 million for the year ended July 31, 2012.

Income_Taxes

Income Taxes	12 Months Ended
	Jul. 31, 2013
Income Taxes	7	Income Taxes
	Income tax expense for the eight months ended March 23, 2013 is $1.4 million. Income tax expense for the twelve months ended July 31, 2012 is $0.1 million. The tax expense is allocated between components of continuing operations, discontinued operations and gain on sale of discontinued operations in accordance with the provisions of Accounting Standards Codification (“ASC”) 740:
			Eight months ended			Twelve months ended
			March 23,			July 31,
			2013			2012
	Tax benefit included in continuing operations		$	(4,356	)	$	(3,784	)
	Tax expense included in discontinued operations			1,385			3,848
	Tax expense included in gain on sale of discontinued operations			4,387			—
	Total tax expense continuing and discontinued operations		$	1,416		$	64
	The approximately $4.4 million and $3.8 million of tax benefits from continuing operations for the eight months ended March 23, 2013 and twelve months ended July 31, 2012, respectively, are attributable to the intraperiod allocation of losses from continuing operations to income generated from discontinued operations, for which the losses would not have otherwise been benefitted under ASC 740.
	The following table presents the components of our provision for income taxes (in thousands):
			Eight Months Ended			Twelve Months Ended
			March 23,			July 31,
			2013			2012
	Current:
	Federal		$	79		$	(30	)
	State			14			4
	Foreign			1,122			231
				1,215			205
	Deferred:
	Federal			—			—
	State			—			—
	Foreign			201			(141	)
				201			(141	)
	Total tax provision (benefit)		$	1,416		$	64
	A reconciliation between the statutory federal income tax and the Company’s actual tax provision follows (in thousands):
			Eight Months Ended			Twelve Months Ended
			March 23,			July 31,
			2013			2012
	Statutory federal income tax benefit		$	(734	)	$	(4,500	)
	State taxes, net of federal benefit			38			(407	)
	Valuation allowance			2,040			4,545
	Other			72			426
	Tax provision (benefit)		$	1,416		$	64
	The components of the Company’s net deferred tax assets at July 31, 2013 and 2012 are as follows (in thousands):
			July 31,
			2013			2012
	Deferred tax assets:
	Net operating loss carryforwards		$	302,503		$	288,381
	Credit carryforwards			21,520			21,457
	Restructuring and related accruals			3,554			4,442
	Accrued expenses			—			810
	Share based compensation expense			—			5,035
	Capital loss carryforwards			1,181			783
	Depreciation			977			5,646
	Other, net			695			6,411
	Total net deferred tax assets			330,430			332,965
	Valuation allowance			(330,430	)		(332,748	)
	Net deferred tax assets		$	—		$	217
	Substantially all of the loss before income taxes as shown in the Consolidated Statement of Operations for the eight months ended March 23, 2013 and the year ended July 31, 2012 was derived in the United States. Certain foreign wholly owned subsidiary companies were compensated on a cost plus basis resulting in the recognition of foreign taxable income and tax expense.
	The Company did not record a current tax benefit for the net operating losses due to the Company’s substantial losses.
	The Company is currently open to audit under statutes of limitation by the Internal Revenue Service, various foreign jurisdictions, and state jurisdictions for the fiscal years ended July 31, 2007 through July 31, 2013. However, limited adjustments can be made to federal and state tax returns in earlier years in order to reduce net operating loss carryforwards.
	As of July 31, 2013, the Company had federal and state net operating loss (“NOL”) carryforwards of approximately $855.1 million and $180.3 million, respectively. The federal and state net operating loss carryforwards will expire at various dates through 2033. The Company also has federal and state research and development credit carryforwards of approximately $11.3 million and $10.2 million, respectively, which begin to expire in 2020 and 2015, respectively.
	The occurrence of ownership changes, as defined in Section 382 of the Internal Revenue Code of 1986, as amended (the “Code”), is not controlled by the Company, and could significantly limit the amount of net operating loss carryforwards and research and development credits that can be utilized annually to offset future taxable income. The Company completed an updated Section 382 study through July 31, 2011 and the results of this study showed that no ownership change within the meaning of the Code had occurred through July 31, 2011 that would limit the annual utilization of available tax attributes.
	The Company has evaluated the positive and negative evidence bearing upon the realization of its deferred tax assets and has established a valuation allowance of $330.4 million and $332.7 million as of July 31, 2013 and July 31, 2012, respectively, for such assets, which are comprised principally of net operating loss carryforwards, research and development credits and stock based compensation.
	Included in the net operating loss carryforwards are stock option deductions of approximately $125.0 million. The benefits of these stock option deductions approximate $47.8 million. As of July 31, 2013, the Company had net operating loss carryforwards of approximately $7.1 million related to the exercise of stock options subsequent to the adoption of fair value accounting. This amount represents the excess benefit and has not been included in the gross deferred tax asset reflected for net operating losses.
	As of July 31, 2013, the total amount of unrecognized tax benefit is $1.7 million. If recognized, the entire amount would impact the Company’s effective tax rate.
	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
			2013			2012
	Beginning balance		$	1,673		$	1,702
	Increase for current year			99			137
	Reductions related to expiration of statute of limitations			(30	)		(166	)
	Ending balance		$	1,742		$	1,673
	As of July 31, 2013 and July 31, 2012, the total amount of accrued interest and penalties related to uncertain tax positions is $0.5 million for each such fiscal year. The Company accounts for interest and penalties related to uncertain tax positions as part of its provision for federal, international, and state income taxes.

Common_Stock

Common Stock	12 Months Ended
	Jul. 31, 2013
Common Stock	8. Common Stock
	Prior to the Dissolution, the Company was authorized to issue up to 250,000,000 shares of the Common Stock. The holders of the Common Stock are entitled to one vote for each share held. In connection with the filing of the Certificate of Dissolution, effective as of 5:00 p.m. Eastern Time on March 7, 2013, the Company closed its stock transfer books and discontinued recording transfers of the Common Stock. The Common Stock, and stock certificates evidencing the shares of Common Stock, are no longer assignable or transferable on the Company’s books, other than transfers by will, intestate succession or operation of law, and represent only the right to receive distributions in connection with the Dissolution, if any. The Board will determine, in its sole discretion and in accordance with the Plan of Dissolution and applicable law, the timing, amount and kind of all distributions to be made to stockholders.

ShareBased_Compensation

Share-Based Compensation	12 Months Ended
	Jul. 31, 2013
Share-Based Compensation	9	Share-Based Compensation
	The Company previously had outstanding equity awards issued under several equity compensation plans, including the 1999 Stock Incentive Plan, the 2009 Stock Incentive Plan, the 2009 Non-employee Director Stock Option Plan and the 1999 Non-employee Director Stock Option Plan. Upon effectiveness of the Dissolution, the Company terminated its equity compensation plans and all outstanding stock-based awards under the plans were cancelled.
	Prior to the termination of the equity compensation plans, the Company estimated the fair value of stock options using the Black-Scholes valuation model. Key input assumptions used to estimate the fair value of stock options included the exercise price of the award, the expected option term, the expected volatility of the Company’s stock over the option’s expected term, the risk-free interest rate over the option’s expected term, and the Company’s expected annual dividend yield. The Company believes that the valuation technique and the approach utilized to develop the underlying assumptions were appropriate in calculating the fair values of the Company’s stock options granted in fiscal 2012. The Company did not grant any stock options during the eight months ended March 23, 2013. The fair value of each option grant was estimated on the grant date using the Black-Scholes option-pricing model with the following assumptions:
			Year Ended
			July 31,
			2012
	Expected option term(1)			5.8 years
	Expected volatility factor (2)			46.9	%
	Risk-free interest rate (3)			1.3	%
	Expected annual dividend yield (4)			0	%
	-1	Historical data on exercise patterns was the basis for estimating the expected life of an option.
	-2	The stock volatility for each grant was measured using the weighted average of historical daily price changes of the Company’s common stock over the most recent period equal to the expected option life of the grant, adjusted for activity which was not expected to occur in the future.
	-3	The risk-free interest rate for periods equal to the expected term of the share option was based on the U.S. Treasury yield curve in effect at the time of grant.
	-4	Excludes cash distributions that reduced additional paid in capital.
	The following table presents share-based compensation expense included in the Company’s consolidated statements of operations for the eight months ended March 23, 2013 and for the year ended July 31, 2012 (in thousands):
			Eight Months Ended			Year Ended
			March 23,			July 31,
			2013			2012
	Cost of product revenue		$	—		$	—
	Cost of service revenue			—			—
	Research and development			312			1,151
	Sales and marketing			126			259
	General and administrative			312			721
	Discontinued operations			525			1,658
	Share-based compensation expense		$	1,275		$	3,789
	Stock Option Activity
	Stock option activity under all of the Company’s stock plans during fiscal year 2013 is summarized as follows:
			Number of			Weighted		Weighted
			Shares			Average		Average
						Exercise		Contractual
						Price		Term
								(Years)
	Outstanding at July 31, 2012			10,756,844		$	3.97		6.03
	Options granted			—			—
	Options exercised			(2,800	)		13.22
	Options canceled			(10,754,044	)		3.97
	Outstanding at July 31, 2013			—		$	0		—
	Options vested and expected to vest			—		$	0		—
	Options exercisable at end of period			—		$	0		—
	As a result of the termination of the Company’s equity compensation plans and cancellation of all unexercised option awards issued thereunder upon the effectiveness of the Dissolution, there were no stock options outstanding or exercisable at July 31, 2013.
	The weighted average fair value of stock options granted on dates of grant was $8.21 during fiscal year 2012.
	The intrinsic value of stock options exercised, calculated as the difference between the market value of the shares on the exercise date and the exercise price of the option, was $5 thousand and $0.3 million for fiscal years 2013 and 2012, respectively.
	The total cash received from employees as a result of employee stock option exercises during fiscal years 2013 and 2012 was $38 thousand and $2.4 million, respectively.

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
	Jul. 31, 2013
Employee Benefit Plan	10. Employee Benefit Plan
	The Company maintained a defined contribution plan under Section 401(k) of the Internal Revenue Code (the “401(k) plan”) until it was terminated in February 2013. Prior to its termination, the 401(k) plan covered substantially all of the Company’s domestic employees. Eligible employees were permitted to contribute to the 401(k) plan through payroll deductions within statutory and plan limits.

Restructuring_Charges

Restructuring Charges	12 Months Ended
	Jul. 31, 2013
Restructuring Charges	11	Restructuring Charges
	During the first quarter of fiscal 2013, the Company implemented cost-reduction actions associated with the IQstream Business, including workforce reductions and other cost containment measures. The Company recorded a workforce reduction restructuring charge of $1.6 million primarily related to employee separation packages, which included severance pay, benefits continuation and outplacement costs. The Company also recorded a restructuring charge of $0.4 million related to certain purchase commitments for the IQstream Business that have no future benefit.
	During the second quarter of fiscal 2013, the Company halted further development and marketing of the IQstream Business. The Company took further cost reduction actions associated with the IQstream Business and recorded a workforce reduction restructuring charge of $0.3 million primarily related to employee separation packages and change in control agreements, which included severance pay, benefits continuation and outplacement costs.
	During the third quarter of fiscal 2013, the Company continued its cost reduction actions associated with the IQstream Business and terminated all of its remaining IQstream employees. The Company also implemented certain cost reduction actions with respect to its general and administrative functions. In connection with these actions, the Company recorded a workforce reduction restructuring charge of $4.0 million primarily related to employee separation packages, which included severance pay, benefits continuation and outplacement costs.
	The Company has completed its cash restructuring payments. A roll-forward of the restructuring accrual since July 31, 2011 is summarized below (in thousands):
			Accrual		Additions			Adjustments			Payments		Accrual
			Balance at										Balance at
			July  31,										July 31, 2013
			2012
	Workforce reduction		$	—	$	5,844		$	(94	)	$	5,750	$	—
	Contract termination costs			—		411			(67	)		344		—
	Total		$	—	$	6,255		$	(161	)	$	6,094	$	—
			Accrual		Adjustments			Payments			Accrual
			Balance at								Balance at
			July  31,								July 31,
			2011								2012
	Workforce reduction		$	67	$	—		$	67		$	—
	Facility consolidations			227		(227	)		—			—
	Total		$	294	$	(227	)	$	67		$	—

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Jul. 31, 2013
Fair Value Measurements	12	Fair Value Measurements
	The fair value measurement rules establish a fair value hierarchy which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value:
	Level 1		Quoted prices in active markets for identical assets or liabilities as of the reporting date. Active markets are those in which transactions for the asset and liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.
	Level 2		Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	Level 3		Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Assets and liabilities of the Company measured at fair value on a recurring basis as of July 31, 2013, are summarized as follows (in thousands):
					Fair Value Measurements at Reporting Date Using
	Description		July 31, 2013		Quoted Prices in		Significant Other		Significant
					Active Markets		Observable Inputs		Unobservable Inputs
					for Identical		(Level 2)		(Level 3)
					Assets (Level 1)
	Assets
	Cash and Cash Equivalents		$	21,041	$	21,041	$	—	$	—
	Total assets		$	21,041	$	21,041	$	—	$	—
	Cash and Cash Equivalents
	Cash and cash equivalents of $21.0 million consisting of money market funds are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets.
	Assets and liabilities of the Company measured at fair value on a recurring basis as of July 31, 2012, are summarized as follows (in thousands):
					Fair Value Measurements at Reporting Date Using
	Description		July 31, 2012		Quoted Prices in		Significant Other		Significant
					Active Markets		Observable Inputs		Unobservable Inputs
					for Identical		(Level 2)		(Level 3)
					Assets (Level 1)
	Assets
	Cash and Cash Equivalents		$	136,654	$	136,654	$	—	$	—
	Government Obligations			302,739		302,739		—		—
	Total assets		$	439,393	$	439,393	$	—	$	—
	Cash and Cash Equivalents
	Cash and cash equivalents of $136.7 million consisting of money market funds and U.S. government agency obligations are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets.
	Government Obligations
	Available-for-sale securities of $302.7 million consisting of U.S. government agency obligations are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Jul. 31, 2013
Commitments and Contingencies	13	Commitments and Contingencies
	Litigation
	On April 22, 2013, the Company filed a complaint in the Complex Commercial Litigation Division of the Superior Court of the State of Delaware against Buyer, Marlin Executive Fund III, L.P. and Marlin Equity III, L.P. (collectively with Buyer, the “Marlin Parties”) in connection with the Asset Sale. The complaint asserted claims for breach of contract against the Marlin Parties and for declaratory judgment against Buyer for certain amounts due to the Company under the Asset Sale Agreement and certain agreements related thereto.
	The complaint sought (1) judgment in favor of the Company in the amount of $894,598, together with interest accrued, with respect to reimbursement for the Company’s operation of Sycamore Networks (Shanghai) Co. Ltd. (“Sycamore Shanghai”) for the benefit of Buyer during the period from the Asset Sale until the receipt of regulatory approval for the transfer of Sycamore Shanghai to Buyer, (2) declaratory judgment that cash in the amount of $345,932 remaining in the accounts of subsidiaries of the Company transferred to Buyer in the Asset Sale are excluded assets under terms of the Asset Sale Agreement and, accordingly, belong to the Company and (3) declaratory judgment that Buyer’s assertion that a $1.1 million decrease in the calculation of net working capital is necessary was untimely because it was made after the expiration of the forty-five day time period set forth in the Asset Sale Agreement. The complaint alleged that, among other things, in communications between the Company and Buyer, Buyer had acknowledged that the $894,598 reimbursement in respect of Sycamore Shanghai was then due and owing to the Company, but, despite repeated requests, Buyer had refused to remit such amount to the Company.
	On May 28, 2013, the Company and the Marlin Parties entered into an agreement pursuant to which Buyer paid the Company an aggregate amount of approximately $1.7 million, comprising (i) the undisputed amount with respect to reimbursement for the Company’s operation of Sycamore Shanghai during the period between the closing of the Asset Sale and the transfer of Sycamore Shanghai to Buyer and (ii) the undisputed portion of the working capital adjustment. Following receipt of those undisputed amounts, the Company dismissed the pending lawsuit against the Marlin Parties without prejudice. In connection with such agreement, the Company and the Marlin Parties have jointly selected McGladrey LLP as the Neutral Accountant (as defined in the Asset Sale Agreement) to determine in arbitration whether the cash that remained, immediately prior to closing of the Asset Sale, in the accounts of subsidiaries transferred to Buyer in the Asset Sale is ultimately for the account of the Company or Buyer and whether the value of inventory for purposes of the working capital adjustment should be as proposed by the Company or as proposed by Buyer, or some value in between. The Company and the Marlin Parties have submitted their initial submissions to the Neutral Accountant and the matter remains pending before the Neutral Accountant. The Company has agreed to file a notice of dismissal with prejudice (or otherwise appropriately document dismissal with prejudice) with respect to the litigation as soon as the arbitration is completed, provided the Neutral Accountant has determined both aforementioned issues.
	The Company intends to vigorously pursue all amounts owed to the Company by the Marlin Parties pursuant to the Asset Sale Agreement and related agreements.
	Guarantees
	As of July 31, 2013, the Company’s guarantees requiring disclosure consist of its warranty obligations, indemnification obligations as set forth in the Asset Sale Agreement, indemnification for intellectual property infringement claims and indemnification for officers and directors.
	In connection with the closing of the Asset Sale and as set forth in the Asset Sale Agreement, the Company has agreed to indemnify Buyer and certain of its related parties for any damages arising out of any breach of any of our representations or warranties or failure to perform any of our covenants or agreements in the Asset Sale Agreement, our failure to fully or timely pay, satisfy or perform any retained liabilities or our failure to pay any taxes associated with the assets and subsidiaries being sold for periods prior to the closing date of the Asset Sale, including any capital gain or corporate income taxes resulting from the transfer of our China subsidiary. The Company’s aggregate indemnification liability for breaches of representations or warranties is limited to $2,812,500. The Company’s indemnification obligations for breaches of representations or warranties expire no later than twelve months following the closing date of the Asset Sale. The Company has not recorded a liability for this agreement.
	Prior to the Asset Sale and the Dissolution, in the normal course of business, the Company also agreed to indemnify other parties, including customers, lessors and parties to other transactions with the Company with respect to certain matters. The Company agreed to hold these other parties harmless against losses arising from a breach of representations or covenants, or other claims made against certain parties. These agreements may limit the time within which an indemnification claim can be made and the amount of the claim. Although the Company does not believe that there exists any basis for any such claims, it is not possible to determine the maximum potential amount under these indemnification agreements due to the limited history of prior indemnification claims and the unique facts and circumstances involved in each particular agreement. Historically, payments made by the Company under these agreements have not had a material impact on the Company’s operating results or financial position. Accordingly, the Company has not recorded a liability for these agreements as of July 31, 2013 or July 31, 2012, as the Company believes the exposure for any related payments is not material.
	We have entered into our standard form of indemnification agreement with each of our directors and executive officers, which is in addition to the indemnification provided for in our amended and restated certificate of incorporation, as amended. The Plan of Dissolution also provides that we continue to indemnify our directors and executive officers in accordance with such agreements and our amended and restated certificate of incorporation, as amended. The indemnification agreements, among other things, provide for indemnification of our directors and executive officers for a number of expenses, including attorneys’ fees and other related expenses, as well as certain judgments, fines, penalties and settlement amounts incurred by any such person in any action, suit or proceeding, including any action by or in the right of the Company, arising out of such person’s services as a director or executive officer of the Company or any other company or enterprise to which the person provided services at our request. The Company did not incur any expense under these arrangements during fiscal year 2013 or fiscal year 2012. Due to the Company’s inability to estimate liabilities in connection with these agreements, if and when they might be incurred, the Company has not recorded any liability for these agreements as of July 31, 2013 or July 31, 2012. During the Dissolution period, we intend to continue to indemnify each of our current and former directors and executive officers to the extent permitted under Delaware law, our amended and restated certificate of incorporation, as amended, and the indemnification agreements. The Company has also continued to maintain directors’ and officers’ coverage since the filing of the Certificate of Dissolution, and intends to obtain runoff coverage for our director and officers during the Dissolution period.
	Warranty Liability
	Prior to the Asset Sale, the Company recorded a warranty liability for parts and labor on its products at the time revenue was recognized. Warranty periods were generally three years from installation date. The estimate of the warranty liability was based primarily on the Company’s historical experience in product failure rates and the expected material and labor costs to provide warranty services.
	The following table summarizes the activity related to the product warranty liability (in thousands):
			Eight Months Ended			Twelve months ended
			March 23,			July 31,
			2013			2012
	Beginning balance		$	1,072		$	1,140
	Accruals for warranties during the period			82			238
	Settlements			(81	)		(306	)
	Reversal upon Asset Sale			(1,073	)		—
	Ending balance		$	—		$	1,072

Fourth_Quarter_Financial_Data

Fourth Quarter Financial Data	12 Months Ended
	Jul. 31, 2013
Fourth Quarter Financial Data	14. Fourth Quarter Financial Data
	The Company has adopted the liquidation basis of accounting. There are no fourth quarter results of operations.

Subsequent_Events

Subsequent Events	12 Months Ended
	Jul. 31, 2013
Subsequent Events	15. Subsequent Events
	On September 5, 2013, the Company terminated the Restated Purchase and Sale Agreement (the “Purchase Agreement”) with Tyngsborough Commons, LLC (“Tyngsborough Commons”) entered into on May 24, 2013 in connection with the liquidation of Sycamore’s property and assets in accordance with the Plan of Dissolution. The Purchase Agreement provided for the sale by the Company of a certain parcel of undeveloped land located in Tyngsborough, Massachusetts to Tyngsborough Commons for a total purchase price of $3.5 million. The Company terminated the Purchase Agreement due to Tyngsborough Commons’ failure to either close the sale on or before August 30, 2013 or pay the $100,000 additional deposit required to exercise the right to extend the period for closing the sale by 45 days, as provided in the Purchase Agreement. As a result of the termination, and pursuant to the terms of the Purchase Agreement, the Company retained as liquidated damages the $125,000 in deposits previously paid by Tyngsborough Commons. The Company intends to continue to pursue available options with respect to the land, but there can be no assurance as to the amount of consideration the Company may be able to obtain for the land or as to any time frame within which a potential sale might occur.

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Jul. 31, 2013
Basis of Consolidation and Presentation	Basis of Consolidation and Presentation
	The consolidated financial statements include the accounts of the Company and its subsidiaries. All significant intercompany accounts and transactions have been eliminated. As part of the Asset Sale, the Company sold its subsidiaries in Shanghai, the Netherlands and Japan. In conjunction with the Dissolution, the Company merged its Delaware and Massachusetts subsidiaries into Sycamore Networks, Inc.
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the dates of the financial statements and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates.
	The condensed consolidated financial statements for the eight month period ended March 23, 2013 and for the twelve months ended July 31, 2012 were prepared on the going concern basis of accounting, which contemplates realization of assets and satisfaction of liabilities in the normal course of business. Following the Company’s filing of the Certificate of Dissolution, on March 24, 2013 the Company adopted the liquidation basis of accounting. See “Liquidation Basis of Accounting” below for further information regarding the Company’s adoption of the liquidation basis of accounting.
Cash Distributions	Cash Distributions
	The Company paid a total of $413.3 million in cash distributions to stockholders in fiscal 2013. As a result of having an accumulated deficit, the cash distributions were recorded as reductions to additional paid-in capital.
Liquidation Basis of Accounting	Liquidation Basis of Accounting
	On March 24, 2013, the beginning of the fiscal month following the filing of the Certificate of Dissolution, the Company began reporting on a liquidation basis of accounting. Under the liquidation basis of accounting, assets are stated at their estimated net realizable values and liabilities are stated at their estimated settlement amounts. Recorded liabilities include estimates of expected costs associated with carrying out the Plan of Dissolution. These estimates will be reviewed periodically and adjusted as appropriate.
	The valuation of assets at their net realizable value and liabilities at their anticipated settlement amounts represent estimates, based on present facts and circumstances, of the net realizable value of the assets and the costs associated with carrying out the Plan of Dissolution. The actual values and costs associated with carrying out the Plan of Dissolution may differ from amounts reflected in the financial statements because of the inherent uncertainty in estimating future events. These differences may be material. In particular, the estimates of costs will vary with the length of time necessary to complete the Dissolution process and to resolve any claims. Accordingly, it is not possible to predict the timing or aggregate amount which will ultimately be distributed to stockholders, and no assurance can be given that the distributions will equal or exceed the estimate of net assets presented in the accompanying Statement of Net Assets.
	Upon transition to the liquidation basis of accounting on March 24, 2013, the Company recorded the following adjustments to record assets at their estimated net realizable values:
	Initial adjustment of assets to estimated net realizable value		Amount
	Write up of assets		$	3,393
	Write down of assets			(510	)
			$	2,883
	The Company’s initial write up of assets related to certain non-cash assets of Sycamore, including intellectual property and other assets relating to the IQstream Business, patents and patent applications related to or used in the Intelligent Bandwidth Management Business, our real estate holdings in Tyngsborough, Massachusetts, our investments in private companies and certain other fixed assets.
	The write down of assets related to certain prepaid expenses and other assets that have no future net realizable value.
	Subsequent to the initial adjustments on March 24, 2013, the Company recorded adjustments to reduce our estimate of the net realizable value for our land in Tyngsborough, Massachusetts and for our other assets. The reduction in our estimate of net realizable value for the Tyngsborough land is a result of the termination of the Restated Purchase and Sale Agreement with Tyngsborough Commons. For additional information concerning the termination of this agreement, see Note 1. “Business”. The reduction in our estimate of net realizable value for our other assets primarily relates to a reduction in the net realizable value of our patent portfolio. Based on recent negotiations and discussions with prospective purchasers of the patents, we have determined that we cannot reasonably provide an estimate of the net realizable value of the patents at this time and, accordingly, have assigned no value to the patents for the purposes of the Statement of Net Assets. The adjustments are based on our current best estimate of the net realizable value of these assets, which is subject to substantial risk and uncertainties.
	On April 22, 2013, the Company commenced litigation against Buyer and certain of its affiliates with respect to certain amounts due under the Asset Sale Agreement. In connection with such litigation, on May 28, 2013, the Company and such parties reached an agreement pursuant to which (1) the Company agreed to dismiss the pending litigation without prejudice, (2) Buyer paid certain undisputed amounts owed to the Company and (3) the parties agreed to submit the remaining issues relating to amounts in dispute of approximately $1.4 million to arbitration for resolution by a neutral accountant. Following receipt of the aforementioned undisputed amounts, the Company dismissed the pending lawsuit without prejudice. The matter remains pending before the neutral accountant. Because of the unpredictability of any settlement amount or ruling in favor of the Company by a neutral accountant, the Company is currently unable to estimate the net realizable value of any proceeds in connection with this matter. Accordingly, the Company has not recorded any receivables for the amount at issue. If the Company is successful in its efforts to recover all or any portion of the $1.4 million from Buyer, the Company will record the amount of any settlement, decision or order by the neutral accountant at the time thereof, which may result in an aggregate increase to net assets. For additional information concerning this matter, see Note 13. “Commitments and Contingencies.”
	The Company also accrued estimated costs expected to be incurred in carrying out the Plan of Dissolution. Under the DGCL, the Dissolution period will last for a minimum of three years. The Company was required to make certain estimates and exercise judgment in determining the accrued costs of liquidation as of March 24, 2013. Upon transition to the liquidation basis of accounting, the Company accrued the following costs expected to be incurred in the Dissolution:
	Accrued costs of liquidation		Amount
	Restructuring		$	3,309
	Compensation			3,539
	Professional fees			3,672
	Other expenses associated with wind down activities			2,725
	Insurance			1,500
			$	14,745
	The accrued costs of liquidation do not include an estimate of the amount that the Company may be required to pay under the Asset Sale Agreement to satisfy our indemnification obligations, if any, to Buyer and its related parties, or any other amount we may be required to pay to Buyer under the Asset Sale Agreement. The Company’s aggregate indemnification liability for breaches of representations and warranties is limited to approximately $2.8 million. The Company’s indemnification obligations for breaches of representations and warranties expire no later than twelve months following the closing date of the Asset Sale, which was January 31, 2013. In the event Buyer is able to successfully assert indemnification claims against the Company, the Company will record the amount of any such liability at the time thereof, resulting in a decrease to net assets.
	Subsequent to the initial accrual for estimated costs during the Dissolution period upon transition to the liquidation basis of accounting, the Company reduced its accrual for estimated costs of liquidation by $1.6 million. The reduction reflects our updated estimate of costs related to compensation, professional fees, other expenses and insurance. These estimated costs will continue to be reviewed periodically and adjusted as appropriate. The table below summarizes the reserve for estimated costs during the Dissolution period as of July 31, 2013:
			Amount
	Compensation		$	2,396
	Professional fees			2,637
	Other expenses associated with wind down activities			1,970
	Insurance			1,333
			$	8,336
Cash Equivalents and Investments	Cash Equivalents and Investments
	Cash equivalents are short-term, highly liquid investments with original or remaining maturity dates of three months or less at the date of acquisition. Cash equivalents are carried at cost plus accrued interest, which approximates fair market value. The Company’s investments are classified as available-for-sale and are recorded at fair value with any unrealized gain or loss recorded as an element of stockholders’ equity. The fair value of investments is determined based on quoted market prices at the reporting date for those investments. The Company would recognize an impairment charge when a decline in the fair value of its investments below the cost basis is judged to be other-than-temporary. The Company considers various factors in determining whether to recognize an impairment charge, including the length of time and extent to which the fair value has been less than the Company’s cost basis, the financial condition and near-term prospects of the investee, and the Company’s intent and ability to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value. As of July 31, 2013 and 2012, aggregate cash and cash equivalents and short and long term investments consisted of (in thousands):
	July 31, 2013:		Amortized			Gross			Gross			Fair Market
			Cost			Unrealized			Unrealized			Value
						Gains			Losses
	Cash and cash equivalents		$	21,041		$	—		$	—		$	21,041
	Total		$	21,041		$	—		$	—		$	21,041
	July 31, 2012:		Amortized			Gross			Gross			Fair Market
			Cost			Unrealized			Unrealized			Value
						Gains			Losses
	Cash and cash equivalents		$	136,654		$	—		$	—		$	136,654
	Government securities			302,695			66			(22	)		302,739
	Total		$	439,349		$	66		$	(22	)	$	439,393
Inventories	Inventories
	Prior to the Asset Sale, inventories were stated at the lower of cost (first-in, first-out basis) or market (net realizable value).
Revenue Recognition	Revenue Recognition
	Prior to the Asset Sale, the Company sold primarily bundled hardware and software products that function together to deliver the tangible products’ essential functionality (referred to herein collectively as “hardware” products), as well as services related to those hardware products. Services included maintenance arrangements for the products with terms typically of one year, as well as to a lesser extent, professional services and training services. The Company sold a limited amount of stand-alone software products.
	The Company recognized revenue when all of the following criteria were met:
		•		Persuasive evidence of an arrangement existed. Evidence of an arrangement generally consisted of sales contracts or agreements and customer purchase orders;
		•		Delivery occurred. Delivery occurred when title and risk of loss were transferred to the customer or the Company received written evidence of customer acceptance, when applicable, to verify delivery or performance;
		•		Sales price was fixed or determinable. The Company assessed whether the sales price was fixed or determinable based on payment terms and whether the sales price was subject to refund or adjustment; and
		•		Collectability was reasonably assured. Collectability was assessed based on the creditworthiness of the customer as determined by credit checks and the customer’s payment history with the Company.
	The Company adopted Accounting Standards Update (“ASU”) No. 2009-13, Revenue Recognition (Topic 605): Multiple-Deliverable Revenue Arrangements (“ASU 2009-13”) and ASU No. 2009-14, Software (Topic 985): Certain Revenue Arrangements That Include Software Elements (“ASU 2009-14”) on a prospective basis as of the beginning of fiscal 2011 for new and materially modified arrangements originating on or after August 1, 2010. ASU 2009-14 amends industry-specific revenue accounting guidance for software and software-related transactions to exclude from its scope tangible products containing software components and non-software components that function together to deliver the product’s essential functionality. As a result of adopting the new guidance, nearly all of the Company’s products and related services were no longer accounted for under the software revenue recognition rules, Accounting Standards Codification (“ASC”) Topic 985.
	Pursuant to the guidance of ASU 2009-13, when a sales arrangement contains multiple elements, particularly hardware products and related services, revenue is allocated to each element based on a selling price hierarchy, using a relative selling price allocation approach. The selling price for a deliverable was based on our vendor-specific objective evidence (“VSOE”), if available, third-party evidence (“TPE”) if VSOE was not available, or best estimate of selling price (“BESP”) if neither VSOE nor TPE was available. The Company established VSOE for its services based on the price charged for each service element when sold separately. The Company was typically not able to determine TPE for its hardware products or services because the Company’s various product and service offerings contained a significant level of differentiation and, therefore, comparable pricing of competitors’ products and services with similar functionality could not be obtained. The Company determined BESP for products and services based on an assessment of multiple factors, including, but not limited to, pricing practices, customer classes and distribution channels. We then recognized revenue allocated to each deliverable in accordance with the four criteria identified above. Our multiple element arrangements typically included both products and services, with maintenance being the most common service element. Maintenance services were delivered over the contractual support period which varied in length, but typically was twelve months. In those limited instances where both hardware and stand-alone software products were included in a multiple element arrangement, the hardware and related services and the software and related services were separated and then allocated a pro rata portion of the total transaction value based upon BESP of each of the hardware and software groups, using a relative selling price allocation approach. The hardware group was then accounted for under the ASC Topic 605 guidance described above and the software group was accounted for under the ASC Topic 985 guidance.
	Service revenues included revenue from maintenance, training, and installation services. Revenue from maintenance service contracts was deferred and recognized ratably over the contractual support period. Revenue from training and installation services was recognized as the services were completed or ratably over the service period.
Share-Based Compensation	Share-Based Compensation
	Upon effectiveness of the Dissolution, the Company cancelled all outstanding stock option awards under the Company’s stock plans. During the period when the Company had stock-based compensation programs, the Company accounted for share-based compensation expense for all share-based payment awards made to employees and directors based on estimated fair values. The Company estimated the fair value of share-based options on the date of grant using the Black Scholes pricing model, which was affected by our stock price as well as assumptions regarding a number of complex and subjective variables. These variables included our expected stock price volatility over the term of the awards, actual and projected employee option exercise behaviors, risk free interest rate and expected dividends. The Company was also required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differed from those estimates.
Impairment of Long-Lived Assets	Impairment of Long-Lived Assets
	Under the going concern basis of accounting, the Company evaluated the recoverability of long-lived assets whenever events or changes in circumstances indicated that the carrying amount of an asset may not be fully recoverable. This periodic review may have resulted in an adjustment of estimated depreciable lives or asset impairment. When indicators of impairment were present, the carrying values of the asset were evaluated in relation to the operating performance and future undiscounted cash flows of the underlying business. If the future undiscounted cash flows were less than the book value, impairment existed. The impairment was measured as the difference between the book value and the fair value of the underlying asset. Fair values were based on estimates of market prices and assumptions concerning the amount and timing of estimated future cash flows and assumed discount rates, reflecting varying degrees of perceived risk.
Property and Equipment	Property and Equipment
	Under the liquidation basis of accounting, property and equipment are stated at their estimated net realizable values. Under the going concern basis of accounting, property and equipment were stated at cost and depreciated over the estimated useful lives of the assets using the straight-line method, based upon the following asset lives:
	Computer and telecommunications equipment		2 to 3 years
	Computer software		3 years
	Furniture and office equipment		5 years
	Leasehold improvements		Shorter of lease term or useful life of asset
	The cost of significant additions and improvements were capitalized and depreciated while expenditures for maintenance and repairs were charged to expense as incurred. Costs related to internal use software were capitalized. Upon retirement or sale of an asset, the cost and related accumulated depreciation of the assets were removed from the accounts and any resulting gain or loss is reflected in the determination of net income or loss. See Note 5. “Property and Equipment.”
Research and Development and Software Development Costs	Research and Development and Software Development Costs
	Under the going concern basis of accounting, the Company’s research and development costs were expensed as incurred. Software development costs incurred prior to the establishment of technological feasibility were charged to expense. Technological feasibility was demonstrated by the completion of a working model. Software development costs incurred subsequent to the establishment of technological feasibility were capitalized until the product was available for general release to customers and amortized based on the greater of (i) the ratio that current gross revenue for a product bears to the total of current and anticipated future gross revenue for that product or (ii) the straight-line method over the remaining estimated life of the product. The period between achieving technological feasibility and the general availability of the related products was short and software development costs qualifying for capitalization were not material. Accordingly, the Company did not capitalize any software development costs.
Income Taxes	Income Taxes
	Income taxes are accounted for under the liability method. Under this method, deferred tax assets and liabilities are recorded based on temporary differences between the financial statement amounts and the tax bases of assets and liabilities measured using enacted tax rates in effect for the year in which the differences are expected to reverse. The Company periodically evaluates the realization of its net deferred tax assets and records a valuation allowance if, based on the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.
	We account for uncertain tax positions by prescribing the minimum recognition threshold a tax position must meet before being recognized in the Company’s financial statements. Generally, recognition is limited to situations where, based solely on the technical merits of the tax position, the Company has determined that the tax position is more likely than not to be sustained on audit.
Concentrations and Significant Customer Information	Concentration of Credit Risks
	Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash equivalents and investments. The Company invests its excess cash primarily in deposits with commercial banks, high-quality corporate securities and U.S. government securities.
Allowance for Doubtful Accounts	Allowance for Doubtful Accounts
	Prior to the Asset Sale, the Company evaluated its outstanding accounts receivable balances on an ongoing basis to determine whether an allowance for doubtful accounts should be recorded. Activity in the Company’s allowance for doubtful accounts is summarized as follows (in thousands):
			Year Ended July 31,
			2013			2012
	Beginning balance		$	42		$	72
	Adjustment			(42	)		(30	)
	Write off			—			—
	Ending balance		$	—		$	42
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss
	Under the going concern basis of accounting, the unrealized gain or loss on investments was included in accumulated other comprehensive loss for all operating periods presented. For foreign subsidiaries where the functional currency was the local currency, assets and liabilities were translated into U.S. dollars at the current exchange rate on the balance sheet date. Revenue and expenses were translated at average rates of exchange prevailing during each period. Translation adjustments for these subsidiaries, which are immaterial for all periods presented, are included in accumulated other comprehensive income (loss).
Net Loss Per Share	Net Loss Per Share
	Under the going concern basis of accounting, basic and diluted net loss per share was computed by dividing the net loss for the period by the weighted average number of common shares outstanding during the period less unvested restricted stock. The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share data):
			Eight Months Ended			Year Ended
			March 23,			July 31,
			2013			2012
	Net loss		$	(3,512	)	$	(12,924	)
	Denominator:
	Weighted-average shares of common stock outstanding			28,882			28,807
	Weighted-average shares subject to repurchase			—			—
	Shares used in per-share calculation—basic			28,882			28,807
	Weighted-average shares of common stock outstanding			28,882			28,807
	Weighted common stock equivalents			—			—
	Shares used in per-share calculation—diluted			28,882			28,807
	Net loss per share:
	Basic		$	(0.12	)	$	(0.45	)
	Diluted		$	(0.12	)	$	(0.45	)
	Employee stock options to purchase 9.6 million shares of common stock were not included in the computation of diluted net loss per share for the eight months ended March 23, 2013 because their effect would have been antidilutive. Employee stock options to purchase 10.9 million shares of common stock were not included in the computation of diluted net loss per share for the year ended July 31, 2012 because their effect would have been antidilutive.
Segment Information	Segment Information
	The Company’s chief operating decision maker was its former President and Chief Executive Officer. Decisions regarding resource allocation and assessing performance were made at the Company level, as one segment. Prior to the Asset Sale, for the eight months ended March 23, 2013, the geographical distribution of revenue was as follows: United States – 80%, Korea – 5%, and all other countries – 15%. For the year ended July 31, 2012, the geographical distribution of revenue was as follows: United States – 79%, United Kingdom – 6%, and all other countries – 15%.
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	On June 16, 2011, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) No. 2011-05, Comprehensive Income (Topic 220): Presentation of Comprehensive Income (“ASU 2011-05”), which revises the manner in which entities present comprehensive income in their financial statements. The new guidance requires companies to report components of comprehensive income in either: (1) a continuous statement of comprehensive income; or (2) two separate consecutive statements. ASU 2011-05 does not change the items that must be reported in other comprehensive income. The Company adopted ASU 2011-05 in the first quarter of fiscal 2013 by reporting a separate statement of comprehensive income (loss).
	In April 2013, the FASB issued ASU No. 2013-07, Presentation of Financial Statements (Topic 205): Liquidation Basis of Accounting. The new standard addresses when and how an entity should apply the liquidation basis of accounting. The new guidance is effective for entities that determine liquidation is imminent during annual reporting periods beginning after December 15, 2013 and interim reporting periods therein. Entities should apply the requirements prospectively from the day that liquidation becomes imminent. Early adoption is permitted. The Company adopted ASU No. 2013-07 in the third quarter of fiscal 2013. The adoption did not have a material impact on the Company’s application of the liquidation basis of accounting.
	In March 2013, the FASB issued ASU No. 2013-05, Foreign Currency Matters. The new standard addresses a parent’s accounting for the cumulative translation adjustment upon derecognition of certain subsidiaries or group of assets within a foreign entity or of an investment in a foreign entity. The objective of the update is to resolve the diversity in practice about the appropriate guidance to apply to the release of the cumulative translation adjustment into net income when a parent either sells a part or all of its investment in a foreign entity or no longer holds a controlling financial interest in a subsidiary or a business within a foreign entity. The update provides that the entire amount of the cumulative translation adjustment associated with the foreign entity would be released when there has been a sale of a subsidiary or group of net assets within a foreign entity and the sale represents the substantially complete liquidation of the investment in the foreign entity. This update is effective for fiscal years, and interim periods within those fiscal years, beginning on or after December 15, 2013. Early adoption is permitted. The Company adopted ASU No. 2013-05 in the third quarter of fiscal 2013. The adoption did not have a material impact on the Company.

Summary_of_Significant_Account2

Summary of Significant Accounting Policies (Tables)	12 Months Ended
	Jul. 31, 2013
Adjustments to record assets at their estimated net realizable values	Upon transition to the liquidation basis of accounting on March 24, 2013, the Company recorded the following adjustments to record assets at their estimated net realizable values:
	Initial adjustment of assets to estimated net realizable value	Amount
	Write up of assets	$	3,393
	Write down of assets		(510	)
		$	2,883
Accrued Costs Expected to be Incurred in Liquidation	Upon transition to the liquidation basis of accounting, the Company accrued the following costs expected to be incurred in the Dissolution:
	Accrued costs of liquidation	Amount
	Restructuring	$	3,309
	Compensation		3,539
	Professional fees		3,672
	Other expenses associated with wind down activities		2,725
	Insurance		1,500
		$	14,745
Reserve for Estimated Costs	The table below summarizes the reserve for estimated costs during the Dissolution period as of July 31, 2013:
		Amount
	Compensation	$	2,396
	Professional fees		2,637
	Other expenses associated with wind down activities		1,970
	Insurance		1,333
		$	8,336
Aggregate Cash and Cash Equivalents, Short and Long Term Investments	As of July 31, 2013 and 2012, aggregate cash and cash equivalents and short and long term investments consisted of (in thousands):
	July 31, 2013:	Amortized			Gross			Gross			Fair Market
		Cost			Unrealized			Unrealized			Value
					Gains			Losses
	Cash and cash equivalents	$	21,041		$	—		$	—		$	21,041
	Total	$	21,041		$	—		$	—		$	21,041
	July 31, 2012:	Amortized			Gross			Gross			Fair Market
		Cost			Unrealized			Unrealized			Value
					Gains			Losses
	Cash and cash equivalents	$	136,654		$	—		$	—		$	136,654
	Government securities		302,695			66			(22	)		302,739
	Total	$	439,349		$	66		$	(22	)	$	439,393
Estimated Useful Lives of Assets	property and equipment were stated at cost and depreciated over the estimated useful lives of the assets using the straight-line method, based upon the following asset lives:
	Computer and telecommunications equipment	2 to 3 years
	Computer software	3 years
	Furniture and office equipment	5 years
	Leasehold improvements	Shorter of lease term or useful life of asset
Summary of Allowance for Doubtful Accounts	Activity in the Company’s allowance for doubtful accounts is summarized as follows (in thousands):
		Year Ended July 31,
		2013			2012
	Beginning balance	$	42		$	72
	Adjustment		(42	)		(30	)
	Write off		—			—
	Ending balance	$	—		$	42
Computation of Basic and Diluted Net Loss Per Share	The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share data):
		Eight Months Ended			Year Ended
		March 23,			July 31,
		2013			2012
	Net loss	$	(3,512	)	$	(12,924	)
	Denominator:
	Weighted-average shares of common stock outstanding		28,882			28,807
	Weighted-average shares subject to repurchase		—			—
	Shares used in per-share calculation—basic		28,882			28,807
	Weighted-average shares of common stock outstanding		28,882			28,807
	Weighted common stock equivalents		—			—
	Shares used in per-share calculation—diluted		28,882			28,807
	Net loss per share:
	Basic	$	(0.12	)	$	(0.45	)
	Diluted	$	(0.12	)	$	(0.45	)

Discontinued_Operations_Tables

Discontinued Operations (Tables)	12 Months Ended
	Jul. 31, 2013
Financial Results of Discontinued Operation	The financial results of the Intelligent Bandwidth Management Business have been classified as discontinued operations for all periods presented.
		Eight months ended			Twelve months ended
		March  23,			July  31,
		2013			2012
	Revenue	$	22,266		$	57,285
	Cost of revenue		8,802			24,106
	Operating expenses		14,452			23,044
	Income tax expense		1,385			3,848
	Net income (loss) from discontinued operations, net of tax		(2,373	)		6,287
	Gain on sale of discontinued operations, net of tax		7,084			—
	Total discontinued operations	$	4,711		$	6,287

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Jul. 31, 2013
Inventories	Inventories consisted of the following at July 31, 2012 (in thousands):
		2012
	Raw materials	$	3,462
	Work in process		1,082
	Finished goods		3,925
	Total	$	8,469

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Jul. 31, 2013
Property and Equipment	Property and equipment consisted of the following at July 31, 2012 (in thousands):
		2012
	Computer software and equipment	$	69,517
	Land		3,000
	Furniture and office equipment		775
	Leasehold improvements		5,204
			78,496
	Less accumulated depreciation		(74,220	)
	Total	$	4,276

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Jul. 31, 2013
Components of Provision for Income Taxes	The tax expense is allocated between components of continuing operations, discontinued operations and gain on sale of discontinued operations in accordance with the provisions of Accounting Standards Codification (“ASC”) 740:
		Eight months ended			Twelve months ended
		March  23,			July  31,
		2013			2012
	Tax benefit included in continuing operations	$	(4,356	)	$	(3,784	)
	Tax expense included in discontinued operations		1,385			3,848
	Tax expense included in gain on sale of discontinued operations		4,387			—
	Total tax expense continuing and discontinued operations	$	1,416		$	64
Reconciliation of the Company's Statutory Federal Income Tax and the Company's Actual Tax Provision	A reconciliation between the statutory federal income tax and the Company’s actual tax provision follows (in thousands):
		Eight Months			Twelve
		Ended  March			Months Ended
		23, 2013			July 31, 2012
	Statutory federal income tax benefit	$	(734	)	$	(4,500	)
	State taxes, net of federal benefit		38			(407	)
	Valuation allowance		2,040			4,545
	Other		72			426
	Tax provision (benefit)	$	1,416		$	64
Net Deferred Tax Assets	The components of the Company’s net deferred tax assets at July 31, 2013 and 2012 are as follows (in thousands):
		July 31,
		2013			2012
	Deferred tax assets:
	Net operating loss carryforwards	$	302,503		$	288,381
	Credit carryforwards		21,520			21,457
	Restructuring and related accruals		3,554			4,442
	Accrued expenses		—			810
	Share based compensation expense		—			5,035
	Capital loss carryforwards		1,181			783
	Depreciation		977			5,646
	Other, net		695			6,411
	Total net deferred tax assets		330,430			332,965
	Valuation allowance		(330,430	)		(332,748	)
	Net deferred tax assets	$	—		$	217
Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands):
		2013			2012
	Beginning balance	$	1,673		$	1,702
	Increase for current year		99			137
	Reductions related to expiration of statute of limitations		(30	)		(166	)
	Ending balance	$	1,742		$	1,673
Provision For Income Taxes
Components of Provision for Income Taxes	The following table presents the components of our provision for income taxes (in thousands):
		Eight Months Ended			Twelve Months Ended
		March 23,			July 31,
		2013			2012
	Current:
	Federal	$	79		$	(30	)
	State		14			4
	Foreign		1,122			231
			1,215			205
	Deferred:
	Federal		—			—
	State		—			—
	Foreign		201			(141	)
			201			(141	)
	Total tax provision (benefit)	$	1,416		$	64

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	12 Months Ended
	Jul. 31, 2013
The Fair Value of Each Option Grant	The fair value of each option grant was estimated on the grant date using the Black-Scholes option-pricing model with the following assumptions:
			Year Ended
			July 31,
			2012
	Expected option term(1)			5.8 years
	Expected volatility factor (2)			46.9	%
	Risk-free interest rate (3)			1.3	%
	Expected annual dividend yield (4)			0	%
	-1	Historical data on exercise patterns was the basis for estimating the expected life of an option.
	-2	The stock volatility for each grant was measured using the weighted average of historical daily price changes of the Company’s common stock over the most recent period equal to the expected option life of the grant, adjusted for activity which was not expected to occur in the future.
	-3	The risk-free interest rate for periods equal to the expected term of the share option was based on the U.S. Treasury yield curve in effect at the time of grant.
	-4	Excludes cash distributions that reduced additional paid in capital.
Share-Based Compensation Expense	The following table presents share-based compensation expense included in the Company’s consolidated statements of operations for the eight months ended March 23, 2013 and for the year ended July 31, 2012 (in thousands):
			Eight Months Ended			Year Ended
			March 23,			July 31,
			2013			2012
	Cost of product revenue		$	—		$	—
	Cost of service revenue			—			—
	Research and development			312			1,151
	Sales and marketing			126			259
	General and administrative			312			721
	Discontinued operations			525			1,658
	Share-based compensation expense		$	1,275		$	3,789
Stock Option Activity	Stock option activity under all of the Company’s stock plans during fiscal year 2013 is summarized as follows:
			Number of			Weighted		Weighted
			Shares			Average		Average
						Exercise		Contractual
						Price		Term
								(Years)
	Outstanding at July 31, 2012			10,756,844		$	3.97		6.03
	Options granted			—			—
	Options exercised			(2,800	)		13.22
	Options canceled			(10,754,044	)		3.97
	Outstanding at July 31, 2013			—		$	0		—
	Options vested and expected to vest			—		$	0		—
	Options exercisable at end of period			—		$	0		—

Restructuring_Charges_Tables

Restructuring Charges (Tables)	12 Months Ended
	Jul. 31, 2013
Roll-forward of Restructuring Accrual	The Company has completed its cash restructuring payments. A roll-forward of the restructuring accrual since July 31, 2011 is summarized below (in thousands):
		Accrual		Additions			Adjustments			Payments		Accrual
		Balance at										Balance at
		July  31,										July 31, 2013
		2012
	Workforce reduction	$	—	$	5,844		$	(94	)	$	5,750	$	—
	Contract termination costs		—		411			(67	)		344		—
	Total	$	—	$	6,255		$	(161	)	$	6,094	$	—
		Accrual		Adjustments			Payments			Accrual
		Balance at								Balance at
		July  31,								July 31,
		2011								2012
	Workforce reduction	$	67	$	—		$	67		$	—
	Facility consolidations		227		(227	)		—			—
	Total	$	294	$	(227	)	$	67		$	—

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Jul. 31, 2013
Assets and Liabilities Fair Value Measurements on Recurring Basis	Assets and liabilities of the Company measured at fair value on a recurring basis as of July 31, 2013, are summarized as follows (in thousands):
				Fair Value Measurements at Reporting Date Using
	Description	July 31, 2013		Quoted Prices in		Significant Other		Significant
				Active Markets		Observable Inputs		Unobservable Inputs
				for Identical		(Level 2)		(Level 3)
				Assets (Level 1)
	Assets
	Cash and Cash Equivalents	$	21,041	$	21,041	$	—	$	—
	Total assets	$	21,041	$	21,041	$	—	$	—
	Assets and liabilities of the Company measured at fair value on a recurring basis as of July 31, 2012, are summarized as follows (in thousands):
				Fair Value Measurements at Reporting Date Using
	Description	July 31, 2012		Quoted Prices in		Significant Other		Significant
				Active Markets		Observable Inputs		Unobservable Inputs
				for Identical		(Level 2)		(Level 3)
				Assets (Level 1)
	Assets
	Cash and Cash Equivalents	$	136,654	$	136,654	$	—	$	—
	Government Obligations		302,739		302,739		—		—
	Total assets	$	439,393	$	439,393	$	—	$	—

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Jul. 31, 2013
Activity Related to Product Warranty Liability	The following table summarizes the activity related to the product warranty liability (in thousands):
		Eight Months Ended			Twelve months ended
		March 23,			July 31,
		2013			2012
	Beginning balance	$	1,072		$	1,140
	Accruals for warranties during the period		82			238
	Settlements		(81	)		(306	)
	Reversal upon Asset Sale		(1,073	)		—
	Ending balance	$	—		$	1,072

Consolidated_Statement_of_Net_

Consolidated Statement of Net Assets (Liquidation Basis) (Detail) (USD $)	Jul. 31, 2013	Mar. 23, 2013	Jul. 31, 2012	Jul. 31, 2011
In Thousands, unless otherwise specified
Assets
Cash and cash equivalents		$19,824	$136,654	$60,765
Liabilities and Net Assets
Reserve for estimated costs during the Dissolution period	8,336	14,745
Corporate Liquidity
Assets
Cash and cash equivalents	21,041
Land	2,948
Other assets	100
Total assets	24,089
Liabilities and Net Assets
Accrued expenses	133
Reserve for estimated costs during the Dissolution period	8,336
Other liabilities	1,983
Total liabilities	10,452
Net assets in liquidation	$13,637

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Net Assets (Liquidation Basis) (Detail) (USD $)	Mar. 23, 2013	Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2013	Jul. 31, 2013	Jul. 31, 2013	Jul. 31, 2013	Jul. 31, 2013
In Thousands, unless otherwise specified				Corporate Liquidity	Corporate Liquidity	Corporate Liquidity	Corporate Liquidity	Corporate Liquidity
					Land	Reduction in estimated net realizable value for other assets	Forfeited deposit	Reduction in estimated costs during the Dissolution period
Stockholders' equity as of March 23, 2013	($27,006)	($442,231)	($448,757)	$27,006
Effects of adopting the liquidation basis of accounting as of March 24, 2013:
Initial adjustment of assets to estimated net realizable value				2,883
Initial adjustment of liabilities to estimated settlement amounts				-14,745
Net assets in liquidation as of March 24, 2013				15,144
Change in estimated net realizable value of assets and liabilities					-552	-2,700	125	1,620
Net assets in liquidation as of July 31, 2013				$13,637

Description_of_Business_Additi

Description of Business - Additional Information (Detail) (USD $)	Jul. 31, 2013	Mar. 07, 2013	Jul. 31, 2012	Apr. 22, 2013	Jul. 31, 2013	Jul. 31, 2013	Jul. 31, 2013
	Patent			Asset Sale Agreement	Tyngsborough Massachusetts	Tyngsborough Massachusetts	Assets (the "Asset Sale") primarily related to the Intelligent Bandwidth Management Business
					acre	Termination of Restated Purchase and Sale Agreement with Tyngsborough Commons, LLC	Asset Sale Agreement
						acre
Entity Information [Line Items]
Sale of facilities and assets, value						$3,500,000	$18,750,000
Total dispute amount under asset sale agreement				1,400,000
Common stock, par value		$0.00	$0.00
Ownership of land					102	102
Undeveloped land, expected date to complete sale						30-Aug-13
Undeveloped land, additional deposit payment for extension to complete sale						100,000
Undeveloped land, expected period of extension to complete sale						45 days
Undeveloped land, retained as liquidated damages						$125,000
Number of United States patents received	43
Number of pending United States patent applications	7

Summary_of_Significant_Account3

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)

8 Months Ended

12 Months Ended

8 Months Ended

12 Months Ended

8 Months Ended

12 Months Ended

8 Months Ended

12 Months Ended

Share data in Millions, unless otherwise specified

Mar. 23, 2013

Jul. 31, 2013

Mar. 23, 2013

Jul. 31, 2012

Jul. 31, 2011

Mar. 23, 2013

Jul. 31, 2012

Mar. 23, 2013

Jul. 31, 2012

Mar. 23, 2013

Jul. 31, 2012

Apr. 22, 2013

U S

U S

Korea

U K

All Other Countries

All Other Countries

Asset Sale Agreement

Summary Of Significant Accounting Policies [Line Items]

Cash distribution to stockholders

$413,300,000

$413,302,000

Total dispute amount under asset sale agreement

1,400,000

Accrued warranty costs

2,800,000

1,072,000

1,140,000

Reduction in accrual for estimated costs

$1,600,000

Options to purchase, shares

9.6

10.9

Percentage of Company revenue

80.00%

79.00%

5.00%

6.00%

15.00%

15.00%

Initial_Adjustment_of_Assets_t

Initial Adjustment of Assets to Estimated Net Realizable Value (Detail) (USD $)	4 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2013
Adjustments For Change In Accounting Principle [Line Items]
Write up (down) of assets	$2,883
Adjustments To Fair Value
Adjustments For Change In Accounting Principle [Line Items]
Write up (down) of assets	3,393
Asset Write Down
Adjustments For Change In Accounting Principle [Line Items]
Write up (down) of assets	($510)

Accrued_Costs_Expected_to_be_I

Accrued Costs Expected to be Incurred in Liquidation (Detail) (USD $)	Jul. 31, 2013	Mar. 23, 2013	Jul. 31, 2011
In Thousands, unless otherwise specified
Accrued Expenses [Line Items]
Restructuring		$3,309	$294
Compensation	2,396	3,539
Professional fees	2,637	3,672
Other expenses associated with wind down activities	1,970	2,725
Insurance	1,333	1,500
Reserve for estimated costs during the Dissolution period	$8,336	$14,745

Reserve_for_Estimated_Costs_De

Reserve for Estimated Costs (Detail) (USD $)	Jul. 31, 2013	Mar. 23, 2013
In Thousands, unless otherwise specified
Accrued Expenses [Line Items]
Compensation	$2,396	$3,539
Professional fees	2,637	3,672
Other expenses associated with wind down activities	1,970	2,725
Insurance	1,333	1,500
Reserve for estimated costs during the Dissolution period	$8,336	$14,745

Aggregate_Cash_and_Cash_Equiva

Aggregate Cash and Cash Equivalents, Short and Long Term Investments (Detail) (USD $)	Jul. 31, 2013	Jul. 31, 2012
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$21,041	$439,349
Gross Unrealized Gains		66
Gross Unrealized Losses		-22
Fair Market Value	21,041	439,393
Cash and cash equivalents
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	21,041	136,654
Fair Market Value	21,041	136,654
Government securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		302,695
Gross Unrealized Gains		66
Gross Unrealized Losses		-22
Fair Market Value		$302,739

Estimated_Useful_Lives_of_Asse

Estimated Useful Lives of Assets (Detail)	12 Months Ended
	Jul. 31, 2013
Computer And Telecommunications Equipment | Minimum
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Useful Life	2 years
Computer And Telecommunications Equipment | Maximum
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Useful Life	3 years
Computer Software
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Useful Life	3 years
Furniture And Office Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment Useful Life	5 years
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Leasehold improvements	Shorter of lease term or useful life of asset

Summary_of_Allowance_for_Doubt

Summary of Allowance for Doubtful Accounts (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$42	$72
Adjustment	-42	-30
Write off
Ending balance		$42

Computation_of_Basic_and_Dilut

Computation of Basic and Diluted Net loss Per Share - Additional Information (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 23, 2013	Mar. 23, 2013	Jul. 31, 2012
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net loss	($3,512)	($3,512)	($12,924)
Denominator:
Weighted-average shares of common stock outstanding	28,882		28,807
Weighted-average shares subject to repurchase
Shares used in per-share calculation-basic	28,882		28,807
Weighted-average shares of common stock outstanding	28,882		28,807
Weighted common stock equivalents
Shares used in per-share calculation-diluted	28,882		28,807
Net loss per share:
Basic	($0.12)		($0.45)
Diluted	($0.12)		($0.45)

Discontinued_Operations_Additi

Discontinued Operations - Additional Information (Detail) (USD $)	1 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2013
Discontinued Operations [Line Items]
Sale of facilities and assets, value	$18.75

Financial_Results_of_Discontin

Financial Results of Discontinued Operation (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	$22,266	$57,285
Cost of revenue	8,802	24,106
Operating expenses	14,452	23,044
Income tax expense	1,385	3,848
Net income (loss) from discontinued operations, net of tax	-2,373	6,287
Gain on sale of discontinued operations, net of tax	7,084
Total discontinued operations	$4,711	$6,287

Inventories_Detail

Inventories (Detail) (USD $)	Jul. 31, 2012
In Thousands, unless otherwise specified
Schedule Of Inventory [Line Items]
Raw materials	$3,462
Work in process	1,082
Finished goods	3,925
Total	$8,469

Property_and_Equipment_Detail

Property and Equipment (Detail) (USD $)	Jul. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]
Property Plant and Equipment	$78,496
Less accumulated depreciation	-74,220
Total	4,276
Computer Software And Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment	69,517
Land
Property, Plant and Equipment [Line Items]
Property Plant and Equipment	3,000
Furniture and Office Equipment
Property, Plant and Equipment [Line Items]
Property Plant and Equipment	775
Leasehold Improvements
Property, Plant and Equipment [Line Items]
Property Plant and Equipment	$5,204

Property_Plant_and_Equipment_A

Property Plant and Equipment - Additional Information (Detail) (USD $)	8 Months Ended	12 Months Ended		12 Months Ended
	Mar. 23, 2013	Jul. 31, 2012	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2013
			Land	Tyngsborough Massachusetts	Tyngsborough Massachusetts
				acre	Land
Property, Plant and Equipment [Line Items]
Depreciation expense	$900,000	$2,600,000
Asset impairment charge		790,000
Ownership of land				102
Property Plant and Equipment		$78,496,000	$3,000,000		$2,900,000

Commitments_Additional_Informa

Commitments - Additional Information (Detail) (USD $)	8 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Commitments [Line Items]
Rent expense under operating leases	$1.10	$2

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	8 Months Ended	12 Months Ended
	Mar. 23, 2013	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2011
Schedule Of Income Taxes [Line Items]
Income tax expense	$1,416,000		$64,000
Tax benefit included in continuing operations	4,356,000		3,784,000
Deferred tax assets, valuation allowance		330,430,000	332,748,000
Net operating loss carry forwards, stock option deductions		125,000,000
Benefits of stock option deductions		47,800,000
Net operating loss carry forwards related to exercise of stock option		7,100,000
Total unrecognized tax benefit		1,742,000	1,673,000	1,702,000
Unrecognized tax benefit uncertain tax position		500,000	500,000
Federal
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards		855,100,000
Operating Loss Carry forwards Expiration Year		2033
Research and development credit carry forwards		11,300,000
Research and Development Credit Carry forwards Expiration Year		2020
State and Local Jurisdiction
Schedule Of Income Taxes [Line Items]
Net operating loss carry forwards		180,300,000
Operating Loss Carry forwards Expiration Year		2033
Research and development credit carry forwards		$10,200,000
Research and Development Credit Carry forwards Expiration Year		2015

Income_Taxes_Detail

Income Taxes (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Schedule Of Income Taxes [Line Items]
Tax benefit included in continuing operations	($4,356)	($3,784)
Tax expense included in discontinued operations	1,385	3,848
Tax expense included in gain on sale of discontinued operations	4,387
Tax provision (benefit)	$1,416	$64

Components_of_Provision_for_In

Components of Provision for Income Taxes (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Current:
Federal	$79	($30)
State	14	4
Foreign	1,122	231
Total current provision (benefit)	1,215	205
Deferred:
Federal
State
Foreign	201	-141
Total deferred provision (benefit)	201	-141
Tax provision (benefit)	$1,416	$64

Reconciliation_of_Statutory_Fe

Reconciliation of Statutory Federal Income Tax and Actual Tax Provision (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Income Tax Reconciliation [Line Items]
Statutory federal income tax benefit	($734)	($4,500)
State taxes, net of federal benefit	38	-407
Valuation allowance	2,040	4,545
Other	72	426
Tax provision (benefit)	$1,416	$64

Net_Deferred_Tax_Assets_Detail

Net Deferred Tax Assets (Detail) (USD $)	Jul. 31, 2013	Jul. 31, 2012
In Thousands, unless otherwise specified
Deferred tax assets:
Net operating loss carryforwards	$302,503	$288,381
Credit carryforwards	21,520	21,457
Restructuring and related accruals	3,554	4,442
Accrued expenses		810
Share based compensation expense		5,035
Capital loss carryforwards	1,181	783
Depreciation	977	5,646
Other, net	695	6,411
Total net deferred tax assets	330,430	332,965
Valuation allowance	-330,430	-332,748
Net deferred tax assets		$217

Reconciliation_of_Beginning_an

Reconciliation of Beginning and Ending Amount of Gross Unrecognized Tax Benefits (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
Schedule Of Income Taxes [Line Items]
Beginning balance	$1,673	$1,702
Increase for current year	99	137
Reductions related to expiration of statute of limitations	-30	-166
Ending balance	$1,742	$1,673

Stockholders_Equity_Additional

Stockholders' Equity - Additional Information (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012
Class of Stock [Line Items]
Common stock, shares authorized	250,000,000	250,000
Common stock, voting rights	One vote for each share held

Fair_Value_of_Option_Grant_Est

Fair Value of Option Grant Estimated on Grant Date Using Black-Scholes Option-Pricing Model (Detail)	12 Months Ended
	Jul. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected option term	5 years 9 months 18 days	[1]
Expected volatility factor	46.90%	[2]
Risk-free interest rate	1.30%	[3]
Expected annual dividend yield	0.00%	[4]
[1]	Historical data on exercise patterns was the basis for estimating the expected life of an option.
[2]	The stock volatility for each grant was measured using the weighted average of historical daily price changes of the Company's common stock over the most recent period equal to the expected option life of the grant, adjusted for activity which was not expected to occur in the future.
[3]	The risk-free interest rate for periods equal to the expected term of the share option was based on the U.S. Treasury yield curve in effect at the time of grant.
[4]	Excludes cash distributions that reduced additional paid in capital.

ShareBased_Compensation_Expens

Share-Based Compensation Expense (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$1,275	$3,789
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	312	1,151
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	126	259
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	312	721
Discontinued Operation
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation expense	$525	$1,658

Stock_Option_Activity_Detail

Stock Option Activity (Detail) (USD $)	12 Months Ended
	Jul. 31, 2013
Number of Shares
Beginning balance, Number of Shares	10,756,844
Options granted, Number of Shares
Options exercised, Number of Shares	-2,800
Options cancelled, Number of Shares	-10,754,044
Options vested and expected to vest
Options exercisable as of March 23, 2013
Weighted-Average Exercise Price
Beginning balance, Weighted Average Exercise Price	$3.97
Options granted, Weighted Average Exercise Price
Options exercised, Weighted Average Exercise Price	$13.22
Options cancelled, Weighted Average Exercise Price	$3.97
Ending balance, Weighted Average Exercise Price	$0
Options vested and expected to vest, Weighted Average Exercise Price	$0
Options exercisable as of March 23, 2013	$0
Weighted-Average Remaining Contractual Term (years)
Options Outstanding at July 31, 2012, Weighted Average Contractual Term (Years)	6 years 11 days

ShareBased_Compensation_Additi

Share-Based Compensation - Additional Information (Detail) (USD $)	12 Months Ended
	Jul. 31, 2013	Jul. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average fair value of stock options granted on dates of grant		8.21
Intrinsic value of stock options exercised	$5,000	$300,000
Total cash received from employees as a result of employee stock option exercises	$38,000	$2,400,000

Restructuring_Charges_Addition

Restructuring Charges - Additional Information (Detail) (USD $)	8 Months Ended	3 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Apr. 27, 2013	Jan. 26, 2013	Oct. 27, 2012	Oct. 27, 2012
		Workforce reduction	Workforce reduction	Workforce reduction	Contract termination costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$2,946	$4,000	$300	$1,600	$400

Rollforward_of_Restructuring_A

Roll-forward of Restructuring Accrual (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Jul. 31, 2013	Jul. 31, 2012	Mar. 23, 2013
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning		$294	$3,309
Additions	6,255
Adjustments	-161	-227
Payments	6,094	67
Accrual Balance, Ending
Workforce reduction
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning		67
Additions	5,844
Adjustments	-94
Payments	5,750	67
Accrual Balance, Ending
Contract termination costs
Restructuring Cost and Reserve [Line Items]
Additions	411
Adjustments	-67
Payments	344
Accrual Balance, Ending
Facility consolidations
Restructuring Cost and Reserve [Line Items]
Accrual Balance, Beginning		227
Adjustments		-227
Accrual Balance, Ending

Assets_and_Liabilities_Fair_Va

Assets and Liabilities Fair Value Measurements on Recurring Basis (Detail) (USD $)	Jul. 31, 2013	Jul. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Measurements, Recurring
Assets
Cash and Cash Equivalents	$21,041	$136,654
Government Obligations		302,739
Total assets	21,041	439,393
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Cash and Cash Equivalents	21,041	136,654
Government Obligations	302,739	302,739
Total assets	$21,041	$439,393

Fair_Value_Measurements_Additi

Fair Value Measurements - Additional Information (Detail) (Quoted Prices in Active Markets for Identical Assets (Level 1), USD $)	Jul. 31, 2013	Jul. 31, 2012
In Thousands, unless otherwise specified
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash Equivalents	$21,041	$136,654
Government Obligations	$302,739	$302,739

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	31-May-13	Jul. 31, 2013
Commitment And Contingencies [Line Items]
Damages sought by the plaintiff		$894,598
Cash amount to be excluded from assets Sale under the terms of the agreement		345,932
Decrease in the calculation of net working capital		1,100,000
Asset purchase and sale agreement expiration period		45 days
Collection from Marlin Parties with respect to subsidiary in Sycamore Shanghai's operation and working capital	1,700,000
Asset sale agreement, maximum indemnification liability		$2,812,500

Activity_Related_to_Product_Wa

Activity Related to Product Warranty Liability (Detail) (USD $)	8 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 23, 2013	Jul. 31, 2012	Jul. 31, 2013
Product Warranty [Line Items]
Beginning balance	$1,072	$1,140	$2,800
Accruals for warranties during the period	82	238
Settlements	-81	-306
Reversal upon Asset Sale	-1,073
Ending balance		$1,072	$2,800

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Tyngsborough Massachusetts, Termination of Restated Purchase and Sale Agreement with Tyngsborough Commons, LLC, USD $)	12 Months Ended	1 Months Ended
	Jul. 31, 2013	Sep. 05, 2013
		Subsequent Event
Subsequent Event [Line Items]
Sale of facilities and assets, value	$3,500,000	$3.50
Undeveloped land, expected date to complete sale	30-Aug-13	30-Aug-13
Undeveloped land, expected period of extension to complete sale	45 days	45 days
Undeveloped land, additional deposit payment for extension to complete sale	100,000	100,000
Undeveloped land, retained as liquidated damages	$125,000	$125,000