Radisys (RSYS) 10-K 27 Feb 15 2014 FY Annual report Financial data

DEI_Document

DEI Document (USD $)	12 Months Ended
	Dec. 31, 2014	Feb. 25, 2015	Jun. 30, 2014
DEI [Abstract]
Entity Registrant Name	Radisys Corporation
Entity Central Index Key	873044
Current Fiscal Year End Date	-19
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	31-Dec-14
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		36,699,420
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Public Float			$126,188,960
Entity Current Reporting Status	Yes

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Revenues	$192,742	$237,863	$286,096	[1]
Cost of sales:
Cost of sales	132,730	165,166	188,513	[1]
Amortization of purchased technology	8,210	8,559	9,544	[1]
Total cost of sales	140,940	173,725	198,057	[1]
Gross margin	51,802	64,138	88,039	[1]
Research and development	31,958	45,000	47,739	[1]
Selling, general and administrative	35,862	41,210	45,200	[1]
Intangible assets amortization	5,077	5,215	5,215	[1]
Impairment of goodwill	0	0	29,748	[1]
Restructuring and other charges, net	4,205	7,479	-117	[1]
Loss from operations	-25,300	-34,766	-39,746	[1]
Interest expense	-1,242	-1,220	-1,722	[1]
Interest income	64	26	39	[1]
Other income	1,389	1,511	545	[1]
Loss before income tax expense	-25,089	-34,449	-40,884	[1]
Income tax expense	2,492	14,955	2,590	[1]
Net loss	($27,581)	($49,404)	($43,474)	[1]
Net loss per share:
Basic	($0.79)	($1.72)	($1.60)	[1]
Diluted	($0.79)	($1.72)	($1.60)	[1]
Weighted average shares outstanding:
Basic	34,699	28,805	27,174	[1]
Diluted	34,699	28,805	27,174	[1]
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Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$31,242	$25,482
Accounts receivable, net	43,845	41,359
Other receivables	6,324	2,634
Inventories, net	18,475	24,928
Inventory deposit, net	0	481
Other current assets	3,276	4,688
Deferred tax assets, net	222	1,121
Total current assets	103,384	100,693
Property and equipment, net	9,786	14,854
Intangible assets, net	43,224	56,510
Long-term deferred tax assets, net	858	2,686
Other assets	3,468	1,442
Total assets	160,720	176,185
Current liabilities:
Accounts payable	33,679	35,081
Accrued wages and bonuses	5,006	5,547
Deferred income	6,204	8,167
Convertible senior notes	18,000	0
Line of credit	10,000	15,000
Other accrued liabilities	7,255	9,978
Total current liabilities	80,144	73,773
Long-term liabilities:
Convertible senior notes	0	18,000
Other long-term liabilities	2,800	3,276
Total long-term liabilities	2,800	21,276
Total liabilities	82,944	95,049
Commitments and contingencies (Note 14)
Preferred stock — $0.01 par value, 5,664 shares authorized; none issued or outstanding at December 31, 2014 and December 31, 2013	0	0
Common stock — no par value, 100,000 shares authorized; 36,532 and 29,198 shares issued and outstanding at December 31, 2014 and December 31, 2013	334,024	309,370
Accumulated deficit	-256,671	-229,090
Accumulated other comprehensive income:
Cumulative translation adjustments	1,175	1,731
Unrealized loss on hedge instruments	-752	-875
Total accumulated other comprehensive income	423	856
Total shareholders’ equity	77,776	81,136
Total liabilities and shareholders’ equity	$160,720	$176,185

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net loss	($27,581)	($49,404)	($43,474)	[1]
Translation adjustments	-556	-438	-325
Adjustment for fair value of hedge derivatives, net of tax	123	-110	9
Other comprehensive loss	-433	-548	-316
Comprehensive loss	($28,014)	($49,952)	($43,790)
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Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Balance Sheet Parenthetical [Abstract]
Preferred Stock, Par or Stated Value Per Share	$0.01	$0.01
Preferred Stock, Shares Authorized	5,664	5,664
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$0	$0
Common Stock, Shares Authorized	100,000	100,000
Common Stock, Shares, Issued	29,198	28,471
Common Stock, Shares, Outstanding	29,198	28,471

Consolidated_Statement_of_Chan

Consolidated Statement of Changes in Shareholders' Equity (USD $)	Total		Common Stock	Accumulated Deficit	Accumulated Other Comprehensive Income
In Thousands, except Share data, unless otherwise specified
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2011	$166,733		$301,225	($136,212)	$1,720
Common Stock, Shares, Issued at Dec. 31, 2011			27,949,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares			384,000
Shares issued pursuant to benefit plans	1,272		1,272	0	0
Stock based compensation associated with employee benefit plans	1,391		1,391	0	0
Vesting of restricted stock units, shares			176,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			-38,000
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	164		164	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	9		0	0	9
Translation adjustments	-325		0	0	-325
Net income (loss)	-43,474	[1]	0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2012	125,442		303,724	-179,686	1,404
Common Stock, Shares, Issued at Dec. 31, 2012			28,471,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares			424,000
Shares issued pursuant to benefit plans	806		806	0	0
Stock based compensation associated with employee benefit plans	5,298		5,298	0	0
Vesting of restricted stock units, shares			417,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			-114,000
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	458		458	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	-110		0	0	-110
Translation adjustments	-438		0	0	-438
Net income (loss)	-49,404		0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2013	81,136		309,370	-229,090	856
Common Stock, Shares, Issued at Dec. 31, 2013	28,471,000		29,198,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares issued pursuant to benefit plans, shares	319,000		281,000
Shares issued pursuant to benefit plans	635		635	0	0
Stock based compensation associated with employee benefit plans	4,097		4,097	0	0
Vesting of restricted stock units, shares			709,000
Vesting of restricted stock units	0		0	0	0
Restricted share forfeitures for tax settlements, shares			-211,000
Stock Issued During Period, Value, Restricted Stock Award, Forfeitures	629		629	0	0
Net adjustment for fair value of hedge derivatives, net of taxes	123		0	0	123
Translation adjustments	-556		0	0	-556
Stock Issued During Period, Shares, New Issues			6,555,000
Proceeds from Issuance of Common Stock	20,551		20,551
Net income (loss)	-27,581		0		0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest at Dec. 31, 2014	$77,776		$334,024	($256,671)	$423
Common Stock, Shares, Issued at Dec. 31, 2014	29,198,000		36,532,000
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Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	($27,581)	($49,404)	($43,474)	[1]
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	20,240	21,748	22,079
Impairment of goodwill	0	0	29,748	[1]
Inventory valuation allowance	2,539	3,302	1,232
Deferred income taxes	3,106	703	1,531
Deferred tax valuation allowance provision	0	12,476	0
Write off of purchased computer software	0	2,868	0
Gain on sale of property held for sale		-2,303
Stock-based compensation expense	4,097	5,298	1,391
Other	119	330	1,210
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	-2,262	11,119	-2,082
Other receivables	-3,689	-303	1,005
Inventories	4,882	-10,192	4,864
Inventory deposit	-481	10,349	352
Other current assets	1,379	-1,197	744
Accounts payable	-1,534	-6,013	3,718
Accrued wages and bonuses	-538	-1,640	-3,608
Accrued restructuring	-2,006	1,551	-3,014
Deferred income	-1,963	-1,145	-2,733
Other	-3,105	362	-7,352
Net cash provided by (used in) operating activities	-6,797	-2,091	5,611
Cash flows from investing activities:
Capital expenditures	-2,396	-6,047	-11,092
Proceeds from sale of software assets	200	2,552	-68
Net cash used in investing activities	-2,196	-3,495	-11,160
Cash flows from financing activities:
Repayments on line of credit	-5,000	-1,919	0
Repayment of convertible notes	0		-10,081
Proceeds from issuance of common stock	21,186	806	1,272
Other financing activities	-882	-921	-213
Net cash provided by (used in) financing activities	15,304	-2,034	-9,022
Effect of exchange rate changes on cash	-551	-80	-17
Net increase (decrease) in cash and cash equivalents	5,760	-7,700	-14,588
Cash and cash equivalents, beginning of period	25,482	33,182	47,770
Cash and cash equivalents, end of period	31,242	25,482	33,182
Supplemental disclosure of cash flow information:
Interest	1,207	1,090	1,347
Income taxes	$1,532	$1,415	$1,202
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Nature_of_Operations

Nature of Operations	12 Months Ended
	Dec. 31, 2014
Nature of Operations [Abstract]
Nature of Operations	Nature of Operations
	Radisys Corporation (NASDAQ: RSYS), the services acceleration company, provides application aware traffic distribution platforms, real-time media processing engines and wireless access technologies. The Company's products and services are broken into two operating segments: Software-Systems and Embedded Products and Hardware Services.
	•	Software-Systems (previously referred to as Software and Solutions). Software-Systems product are comprised of three product families: FlowEngine, MediaEngine and CellEngine.
	◦	FlowEngine, the recently announced products targeting the communication and content provider traffic management market, are a family of products designed to classify and intelligently distribute session data flows to appropriate network processing resources.
	◦	MediaEngine (previously referred to as Media Resource Funtion or MRF) products which can be purchased either as a complete system, MediaEngine MPX-12000, or as virtualized MediaEngine software ("vMRF") are designed into the IP Multimedia Subsystem ("IMS") core of telecom networks and provide media processing capabilities.
	◦	CellEngine (previously referred to as Trillium) software is the protocol foundation that enables the communication linkage between end user wireless devices and the small cell base stations mobile carriers in both the 3G and LTE networks.
	•	Embedded Products and Hardware Services (comprising the product-lines previously referred to as ATCA, COMe RMS and Other Products). These hardware based products provide platforms to control and move data in the core of the telecom network.

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies
	Principles of Consolidation
	The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All inter-company accounts and transactions have been properly eliminated in consolidation.
	Management Estimates
	The Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). The preparation of these Consolidated Financial Statements requires management to make estimates and judgments that may affect the amounts reported in its Consolidated Financial Statements and accompanying notes. Actual results may differ from these estimates under different assumptions or conditions.
	Revenue Recognition
	Multiple Element Arrangements
	A significant portion of the Company's revenue relates to product sales for which revenue is recognized upon shipment, with limited judgment required related to estimates of product returns. Title transfer for substantially all product sales occurs upon delivery of products to the Company's customer's freight forwarders. The software elements included in certain components of ATCA systems and MRF products are considered to be functioning together with the non-software elements to provide the tangible product's essential functionality and these arrangements generally include multiple elements such as hardware, technical support services as well as software upgrades or enhancements on a when and if available basis. Arrangements including multiple elements require significant management judgment to evaluate the effective terms of agreements, the Company's performance commitments and determination of fair value of the various deliverables under the arrangement.
	For hardware sales which may include software, ASU 2009-13 provides a fair value hierarchy in order to determine the appropriate relative fair value for each element of an arrangement. When available, the Company uses vendor specific objective evidence (“VSOE”) to determine the estimated fair value of each element of the arrangement. In the absence of VSOE or third−party evidence ("TPE") for a delivered element, the Company then uses an estimated selling price in order to determine fair value. Estimated selling prices represent the Company's best estimate of the price at which it would transact if the deliverables were sold on a standalone basis. For technical support services, the Company generally determines its selling price based on VSOE as supported by substantive renewal rates in the related service agreements. In certain instances where VSOE cannot be established, the Company then relies upon its estimated selling price for such deliverables as TPE is generally not available due to the unique company-specific terms surrounding such service agreements. In establishing an appropriate estimated selling price for these technical support agreements, the Company considered entity specific factors such as its historical and projected costs, historical and projected revenues, and profit objectives. The Company also considered market specific factors when establishing reasonable profit objectives.
	Hardware
	Revenue from hardware products is recognized in accordance with ASC 605 Revenue Recognition. Under the Company’s standard terms and conditions of sale, the Company transfers title and risk of loss to the customer at the time product is shipped to the customer and revenue is recognized accordingly, unless customer acceptance is uncertain or significant obligations remain. The Company reduces revenue for estimated customer returns for rotation rights according to agreements with the Company's distributors. The amount of revenues derived from distributors as a percentage of revenues was 16.3%, 14.3% and 16.0% for the years ended December 31, 2014, 2013 and 2012. Revenues associated with distributors are generally recognized upon shipment as the Company has established a sell-to model with distributors. The Company accrues the estimated cost of product warranties, based on historical experience at the time the Company recognizes revenue.
	The software elements included in certain components of embedded product systems and MRF products are considered to be functioning together with the non-software elements to provide the tangible product's essential functionality and the Company’s MRF arrangements generally include multiple elements such as hardware and technical support services.
	Software licenses and royalties
	Revenue from software licenses and royalties is recognized in accordance with ASC 985 Software. The Company recognizes software license revenue at the time of shipment or upon delivery of the software master provided that the revenue recognition criteria have been met and VSOE exists to allocate the total fee to all undelivered elements of the arrangement. The Company defers revenue on arrangements, including specified software upgrades, until the specified upgrade has been delivered. Revenue from customers for prepaid, non-refundable software royalties is recorded when the revenue recognition criteria have been met. Revenue for non-prepaid royalties is recognized at the time the Company receives reporting from customers as the Company has not established an ability to reliably estimate customer royalties prior to time contractually obligated reporting is received.
	Technical support services
	Technical support services revenue is recognized as earned on the straight-line basis over the term of the contract. The fair value of the Company’s post-contract support has been determined by renewal rates within the Company’s support agreements, the actual amounts charged to customers for renewal of their support services or based on an estimated selling price.
	Professional and other services
	Professional services revenue is recognized upon completion of certain contractual milestones and customer acceptance of the services rendered. Other services revenues include hardware repair services and custom software implementation projects. Hardware repair services revenues are recognized when the services are complete. Software implementation revenues are recognized upon completion of certain contractual milestones and customer acceptance of the services rendered or as services are performed under the percentage-of-completion method when the Company is reasonably able to estimate the total effort required to complete the contract.
	Deferred income
	Deferred income represents amounts received or billed for the following types of transactions:
	•	Undelivered elements of an arrangement—Certain software sales include specified upgrades and enhancements to an existing product. Revenue for such products is deferred until the future obligation is fulfilled.
	•	Technical support services—The Company has a number of technical support agreements with customers for hardware and software maintenance. Generally, these services are billed in advance and recognized over the term of the agreement.
	Capitalized Software Development Costs
	The Company does not capitalize internal software development costs incurred in the production of computer software as the Company does not incur any material costs between the point of technological feasibility and general release of the product to customers in the future. As such software development costs are expensed as research and development (“R&D”) costs.
	Shipping Costs
	The Company’s shipping and handling costs for product sales are included under cost of sales for all periods presented. For the years ended December 31, 2014, 2013 and 2012 shipping and handling costs represented approximately 2% of cost of sales.
	Advertising Costs
	The Company expenses advertising costs as incurred. Advertising costs consist primarily of media, display, web, and print advertising, along with trade show costs and product demos and brochures. For the years ended December 31, 2014, 2013 and 2012 advertising costs were $1.1 million, $2.0 million and $2.1 million.
	Cash Equivalents
	The Company considers all highly liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents.
	Accounts Receivable
	Trade accounts receivable are stated at invoice amount net of an allowance for doubtful accounts and do not bear interest. An allowance for doubtful accounts is maintained for estimated losses resulting from the inability of customers to make required payments. Management reviews the allowance for doubtful accounts quarterly for reasonableness and adequacy. If the financial condition of the Company’s customers were to deteriorate resulting in an impairment of their ability to make payments, additional provisions for uncollectible accounts receivable may be required. In the event the Company determined that a smaller or larger reserve was appropriate, it would record a credit or a charge in the period in which such determination is made. In addition to specific customer reserves, the Company maintains a non-specific bad debt reserve for all customers. This non-specific bad debt reserve is calculated based on the Company's historical pattern of bad debt write-offs as a percentage of gross accounts receivable for the current rolling eight quarters, which percentage is then applied to the current gross accounts receivable. The Company’s customers are concentrated in the technology indus
	try and the collection of its accounts receivable are directly associated with the operational results of the industry.
	Inventories
	Inventories are stated at the lower of cost, determined on the first-in, first-out (FIFO) basis, or market, net of an inventory valuation allowance. The Company uses a standard cost methodology to determine the cost basis for its inventories. The Company evaluates inventory on a quarterly basis for obsolete or slow-moving items to ascertain if the recorded allowance is reasonable and adequate. Inventory is written down for estimated obsolescence or unmarketable inventory equal to the difference between the cost of inventory and the estimated net realizable value based upon assumptions about future demand and market conditions. The Company's inventory valuation allowances establish a new cost basis for inventory.
	Long-Lived Assets
	Long-lived assets, such as property and equipment and definite-life intangible assets are evaluated for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. The Company assesses the impairment of the assets based on the undiscounted future cash flow the assets are expected to generate compared to the carrying value of the assets. If the carrying amount of the assets is determined not to be recoverable, a write-down to fair value is recorded. Management estimates future cash flows using assumptions about expected future operating performance. Management’s estimates of future cash flows may differ from actual cash flow due to, among other things, technological changes, economic conditions or changes to the Company’s business operations.
	Intangible assets with estimable useful lives are amortized on a straight-line basis over their respective estimated life and reviewed for impairment when certain triggering events suggest impairment has occurred. The Company determined a triggering event occurred during the third quarters of 2014 and 2013 and required an analysis of the recoverability of its long-lived assets. After finalizing these analyses, the Company concluded its long-lived assets were not impaired.
	Property and Equipment
	Property and equipment is recorded at historical cost is depreciated or amortized on a straight-line basis according to the table below. In certain circumstances where the Company is aware that an asset’s life differs from the general guidelines set forth in its policy, management adjusts its depreciable life accordingly, to ensure expense is being recognized over the appropriate future periods. Ordinary maintenance and repair expenses are expensed when incurred.
	Machinery, equipment, furniture and fixtures		5 years
	Software, computer hardware and manufacturing test fixtures		3 years
	Engineering demonstration products and samples		1 year
	Leasehold improvements		Lesser of the lease term or estimated useful lives
	Leases
	The Company leases all of its facilities, certain office equipment and vehicles under non-cancelable operating leases that expire at various dates through 2020, along with options that permit renewals for additional periods. Rent escalations are considered in the determination of straight-line rent expense for operating leases. Leasehold improvements made at the inception of or during the lease are amortized over the shorter of the asset life or the lease term.
	Accrued Restructuring
	Expenses associated with exit or disposal activities are recognized when probable and estimable because the Company has a history of paying severance benefits. The Company has engaged, and may continue to engage, in restructuring actions, which require the Company to make significant estimates in several areas including: realizable values of assets made redundant or obsolete; expenses for severance and other employee separation costs; the ability and timing to generate sublease income, as well as the Company's ability to terminate lease obligations at the amounts estimated; and other exit costs. Should the actual amounts differ from the estimates, the amount of the restructuring charges could be materially impacted.
	Warranty
	The Company provides for the estimated cost of product warranties at the time it recognizes revenue. Products are generally sold with warranty coverage for a period of 12 or 24 months after shipment. On a quarterly basis the Company assesses the reasonableness and adequacy of the warranty liability and adjusts such amounts as necessary. Warranty reserves are included in other accrued liabilities and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2014 and 2013.
	Research and Development
	Research, development and engineering costs are expensed as incurred. R&D expenses consist primarily of salary, bonuses and benefits for product development staff, and cost of design and development supplies and equipment, net of reimbursements for non-recurring engineering services.
	Income Taxes
	Income tax accounting requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities. Valuation allowances are established to reduce deferred tax assets if it is “more likely than not” that all or portion of the asset will not be realized due to inability to generate sufficient taxable income in the relevant period to utilize the deferred tax asset. Tax law and rate changes are reflected in the period such changes are enacted. The Company recognizes uncertain tax positions after evaluating whether certain tax positions are more likely than not to be sustained by taxing authorities. In addition, the Company recognizes potential accrued interest and penalties related to unrecognized tax benefits in income tax expense.
	Comprehensive Income (Loss)
	The Company reports accumulated other comprehensive income (loss) in its Consolidated Balance Sheets. Comprehensive income (loss) includes net income (loss), translation adjustments and unrealized gains (losses) on hedging instruments net of their tax effect. The cumulative translation adjustments consist of unrealized gains (losses) for foreign currency translation.
	Stock-Based Compensation
	The Company measures stock-based compensation at the grant date, based on the fair value of the award, and recognizes expense on a straight-line basis over the employee's requisite service period. For performance awards the requisite service period is equal to the period of time over which performance objectives underlying the award are expected to be achieved and vested. The number of performance shares that ultimately vest depends on the achievement of certain performance criteria over the measurement period. Quarterly, the Company reevaluates the probability that the performance objectives will be met and the number of performance shares expected to vest. The amount of expense recorded each period for performance awards is based on the Company's estimate of the number of awards that will ultimately vest.
	Net loss per share
	Basic loss per share amounts are computed based on the weighted average number of common shares outstanding. Diluted net loss per share incorporates the incremental shares issuable upon the assumed exercise of stock options, incremental shares associated with the assumed vesting of restricted stock and the assumed conversion of the Company’s convertible notes, as if the conversion to common shares had occurred at the beginning of the fiscal year and when such conversion would have a dilutive effect. When the conversion of the Company’s convertible notes are dilutive, earnings would be adjusted for interest expense incurred on the convertible notes.
	Derivatives
	The Company hedges exposure to changes in exchange rates from the US Dollar to the Indian Rupee. These derivatives are recognized on the balance sheet at their fair value. Unrealized gain positions are recorded as other current assets and unrealized loss positions are recorded as other accrued liabilities. Changes in the fair values of the outstanding derivatives that are highly effective are recorded in other comprehensive income until net income (loss) is affected by the variability of the cash flows of the hedged transaction. Hedge ineffectiveness could result when the amount of the Company’s hedge contracts exceed the Company’s forecasted or actual transactions for which the hedge contracts were designed to hedge. Once a hedge contract matures the associated gain (loss) on the contract will remain in other comprehensive income (loss) until the underlying hedged transaction affects net income (loss), at which time the gain (loss) will be recorded to the expense line item being hedged, which is primarily cost of sales and research and development. The Company only enters into derivative contracts in order to hedge foreign currency exposure. If the Company entered into a contract for speculative reasons or if the Company’s current hedge position becomes ineffective, changes in the fair values of the derivatives would be recognized in earnings in the current period.
	Foreign currency translation
	Assets and liabilities of international operations using a functional currency other than the U.S. dollar are translated into U.S. dollars at exchange rates as of December 31, 2014 and 2013. Income and expense accounts are translated into U.S. dollars at the average daily rates of exchange prevailing during the period. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars are recorded as a separate component in shareholders’ equity. Foreign exchange transaction gains and losses are included in other income (expense), net, in the Consolidated Statements of Operations.
Recent Accounting Pronouncements
On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method and has not determined the effect of the standard on its ongoing financial reporting.

Goodwill

Goodwill	12 Months Ended
	Dec. 31, 2014
Goodwill [Abstract]
Goodwill	Goodwill
	The Company had no Goodwill recorded at December 31, 2014 or 2013. During the third quarter of 2012, the Company determined that indicators of potential impairment existed to require an interim goodwill impairment assessment. These indicators included the recent trading value of the Company's common stock, coupled with overall telecommunications market conditions. As a result, the Company compared its book value to its market capitalization, adjusted for factors such as a control premium and concluded step two of the impairment test should be performed.
	During 2012, the Company was organized as a single reporting unit. The Company estimated the fair value of its single reporting unit using a market approach. The market approach estimates fair value in part on market capitalization plus an estimated control premium paid in acquisitions of publicly traded companies with similar characteristics to the Company. Based on the Company's analysis, the implied fair value of goodwill was lower than its carrying value. As a result, the Company recorded a full impairment charge of $29.7 million against the carrying amount of goodwill and as of December 31, 2012 the Company had no goodwill. The impairment charge is included in "Impairment of goodwill" in the Consolidated Statements of Operations.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	12 Months Ended
	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value of Financial Instruments
	The Company measures at fair value certain financial assets and liabilities. GAAP specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company's market assumptions. These two types of inputs have created the following fair-value hierarchy:
	Level 1— Quoted prices for identical instruments in active markets;
	Level 2— Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active, and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets; and
	Level 3— Valuations derived from valuation techniques in which one or more significant inputs or significant value drivers are unobservable.
	Foreign currency forward contracts are measured at fair value using models based on observable market inputs such as foreign currency exchange rates; therefore, they are classified within Level 2 of the valuation hierarchy. The cash surrender value of life insurance contracts and deferred compensation liability are measured at fair value using quoted market prices for similar instruments; therefore, they are classified within Level 2 of the valuation hierarchy.
	The Company had obligations ("contingent consideration"), to be paid in cash, related to the acquisition of Continuous Computing Corporation ("Continuous Computing") based on the amount of product royalty revenues to be generated by a specified set of contracts associated with certain of Continuous Computing's products over a period of 36 months after closing. The contingent consideration liability was established at the time of acquisition and was evaluated at the end of each reporting period. As the significant inputs used in determining the fair value were unobservable, this liability was classified within Level 3 of the fair value hierarchy.
	The fair value of the contingent consideration was determined by calculating the net present value of the expected payments using significant inputs that are not observable in the market, including revenue projections and discount rates consistent with the level of risk of achievement; therefore the Company developed its own assumptions for the expected product royalty revenues generated under the arrangement. The fair value of the contingent consideration was affected most significantly by changes in the amount and timing of the revenue projections. If the revenue projections increased or decreased the fair value of the contingent consideration would increase or decrease accordingly in amounts that will vary based on the timing of the projected revenues and the timing of the expected payments. The royalty earning period for Continuous Computing's products was completed during the quarter ended September 30, 2014. The remaining liability was paid in the fourth quarter of 2014.
	The following table summarizes the fair value measurements as of December 31, 2014 for the Company's financial instruments (in thousands):
		Fair Value Measurements as of December 31, 2014
		Total			Level 1			Level 2			Level 3
	Foreign currency forward contracts	(83	)		—			(83	)		—
	The following table summarizes the fair value measurements as of December 31, 2013, for the Company’s financial instruments (in thousands):
		Fair Value Measurements as of December 31, 2013
		Total				Level 1				Level 2			Level 3
	Cash surrender value of life insurance contracts(A)	$	1,866			$	—			$	1,866		$	—
	Deferred compensation liability  (A)	(1,276		)						(1,276		)
	Foreign currency forward contracts	(169		)		—				(169		)	—
	Contingent consideration liability	(390		)		—				—			(390		)
	Total	$	31			$	—			$	421		$	(390	)
	(A) During the year ended December 31, 2013, the company terminated its Deferred Compensation Plan. Substantially all of the plan assets and participant balances were liquidated and distributed to participants during the year ended December 31, 2014.
	The following table summarizes level 3 activity for the Company's contingent consideration liability (in thousands):
		Fair Value
		Contingent Consideration
	Balance at December 31, 2012	2,541
	Additions	—
	Decrease in liability due to re-measurement	(1,891		)
	Payments	(447		)
	Accretion	187
	Balance at December 31, 2013	$	390
	Additions	—
	Decrease in liability due to re-measurement	(156		)
	Payments	(273		)
	Accretion	39
	Balance at December 31, 2014	$	—
	The Company records all changes in estimates and accretion on the contingent consideration liability to restructuring and other charges, net in the Consolidated Statements of Operations. The royalty earning period for Continuous Computing's products was completed during the third quarter of 2014 and the remaining liability was paid in the fourth quarter of 2014.
	Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis
	The Company assessed certain long-lived assets for impairment during the third quarter of 2014, comparing the undiscounted future cash flow the assets are expected to generate to the carrying value of the assets. The probability-weighted analysis of expected undiscounted future cash flows exceeded the book value of the long lived assets by $5.0 million, or 28%. Key assumptions used in this analysis included revenue growth for the Company's technologies as well as general economic and business conditions.

Accounts_Receivable_and_Other_

Accounts Receivable and Other Receivables	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Accounts Receivable and Other Receivables	Accounts Receivable and Other Receivables
	Accounts receivable balances consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Accounts receivable, gross	$	43,969		$	41,707
	Less: allowance for doubtful accounts	(124		)	(348		)
	Accounts receivable, net	$	43,845		$	41,359
	Accounts receivable at December 31, 2014 and 2013 consisted of sales to the Company’s customers which are generally based on standard terms and conditions. The Company recorded the following activity in allowance for doubtful accounts (in thousands):
		For the Years Ended
		December 31,
		2014			2013			2012
	Allowance for doubtful accounts, beginning of the year	$	348		$	779		$	828
	Charged to costs and expenses	(75		)	(310		)	—
	Less: write-offs, net of recoveries	(149		)	(121		)	(49		)
	Remaining allowance, end of the year	$	124		$	348		$	779
	As of December 31, 2014 and 2013, other receivables were $6.3 million and $2.6 million. Other receivables consisted primarily of non-trade receivables including inventory transferred to the Company’s contract manufacturing partner on which the Company does not recognize revenue and receivables for value-added taxes.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Inventories	Inventories
	Inventories consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Raw materials	$	9,219		$	21,127
	Work-in-process	1,195			1,194
	Finished goods	10,762			9,644
		21,176			31,965
	Less: inventory valuation allowance	(2,701		)	(7,037		)
	Inventories, net	$	18,475		$	24,928
		December 31,			December 31,
		2014			2013
	Inventory deposit (A)	$	370		$	1,289
	Less: inventory deposit valuation allowance	(370		)	(808		)
	Inventory deposit, net	$	—		$	481
	(A)	During 2013 the Company modified the inventory deposit arrangement with its former contract manufacturing partner. Prior to the modification, the Company was obligated to place a deposit with its former contract manufacturer for the cost of excess inventory that had been purchased as a result of the Company's forecasted demand when there was no alternative use. Under the new arrangement, rather than place a deposit with the former contract manufacturer, the Company was obligated to purchase the inventory on consignment. The calculation of excess inventory and its impact on the Company’s cash and reported aggregate inventory levels is the same under the consignment arrangement as it was under the deposit arrangement. In the third quarter of 2014, the Company substantially completed the transition to a new contract manufacturing partner; however, as of December 31, 2014, there was a remaining $0.1 million balance of consigned inventory at the Company’s former contract manufacturing partner and a remaining deposit of $0.4 million relating to service inventory, which is fully reserved.
	Consigned inventory is held at third-party locations, including the Company's contract manufacturing partner and customers. The Company retains title to the inventory until purchased by the third-party. Consigned inventory, consisting of raw materials and finished goods, was $2.6 million and $12.0 million at December 31, 2014 and 2013.
	The Company recorded the following charges associated with the valuation of inventory, inventory deposit and the adverse purchase commitment liability for the years ended December 31 (in thousands):
		2014			2013			2012
	Inventory, net	$	2,412		$	3,302		$	1,080
	Inventory deposit, net	126			945			926
	Adverse purchase commitments	323			327			31
	The following is a summary of the change in the Company’s inventory valuation allowance for the years ended December 31 (in thousands):
		2014			2013
	Inventory valuation allowance, beginning of the year	$	7,037		$	2,199
	Usage:
	Inventory scrapped	(5,768		)	(956		)
	Inventory utilized	(1,005		)	(363		)
	Subtotal—usage	(6,773		)	(1,319		)
	Write-downs of inventory valuation	3,417			3,665
	Transfer from other liabilities (A)	(1,013		)	35
	Transfer from (to) inventory deposit valuation allowance	33			2,457
	Inventory valuation allowance, end of the year	$	2,701		$	7,037
	(A)	Transfer from other liabilities is related to obsolete inventory purchased from contract manufacturers during the year which was previously reserved for as an adverse purchase commitment. (Note 10—Other Accrued and Other Long-Term Liabilities and Note 14—Commitments and Contingencies.)

Property_and_Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment
	Property and equipment consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Manufacturing equipment	$	24,643		$	26,779
	Office equipment and software	30,702			30,745
	Leasehold improvements	5,163			5,973
	Property and equipment, gross	60,508			63,497
	Less: accumulated depreciation and amortization	(50,722		)	(48,643		)
	Property and equipment, net	$	9,786		$	14,854
	Depreciation expense associated with property and equipment for the years ended December 31, 2014, 2013 and 2012 was $7.0 million, $8.0 million and $7.3 million.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2014
Intangible Assets [Abstract]
Intangible Assets	Intangible Assets
	The following tables summarize the Company’s total purchased intangible assets (in thousands):
		Gross		Accumulated			Net
				Amortization
	December 31, 2014
	Purchased technology	$	114,754	$	(87,398	)	$	27,356
	Patents	6,472		(6,472		)	—
	Customer lists	37,000		(26,284		)	10,716
	Trade names	11,536		(6,384		)	5,152
	Backlog	2,127		(2,127		)	—
	Total intangible assets	$	171,889	$	(128,665	)	$	43,224
	December 31, 2013
	Purchased technology	$	114,754	$	(79,189	)	$	35,565
	Patents	6,472		(6,472		)	—
	Customer lists	37,000		(21,997		)	15,003
	Trade names	11,536		(5,594		)	5,942
	Backlog	2,127		(2,127		)	—
	Total intangible assets	$	171,889	$	(115,379	)	$	56,510
	Intangible assets amortization expense was $13.3 million, $13.8 million and $14.8 million for the years ended December 31, 2014, 2013 and 2012. The Company’s purchased intangible assets have remaining useful lives of one to seven years as of December 31, 2014. The Company reviews for impairment all of its purchased intangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.
	The estimated future amortization expense of purchased intangible assets as of December 31, 2014 is as follows (in thousands):
	For the Years Ending December 31,	Estimated
		Intangible
		Amortization
		Amount
	2015	$	12,901
	2016	12,747
	2017	10,714
	2018	4,870
	2019	790
	Thereafter	1,202
	Total estimated future amortization expense	$	43,224

Accrued_Restructuring

Accrued Restructuring	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring and Other Charges	Restructuring and Other Charges
	The following table summarizes the Company's restructuring and other gains and charges as presented in the Consolidated Statement of Operations (in thousands):
		December 31, 2014			December 31, 2013			31-Dec-12
	Employee-related restructuring expenses	$	1,468		$	5,463		$	2,769
	Fair value adjustments to contingent consideration liability	(156		)	(1,740		)	(5,052		)
	Facility reductions	—			602			1,590
	Write off of purchased computer software	—			2,868			—
	Net gain from sale of OS-9 software assets	—			(1,532		)	—
	Integration-related expenses	2,097			1,039			576
	Non-recurring legal expenses	796			779			—
	Restructuring and other charges, net	$	4,205		$	7,479		$	(117	)
	Restructuring and other charges may include costs from non-recurring events such as costs incurred for employee severance, acquisition or divestiture activities, excess facility costs, certain legal costs, asset related charges and other expenses associated with business restructuring activities.
	During the year ended December 31, 2014, the Company recorded the following restructuring and other charges:
	•	$1.5 million net expense relating to the severance of employees in connection with the previously reported Penang site closure, as well as severance for 20 additional employees, net of reductions resulting from changes in previously estimated amounts for employee severance and associated payroll costs;
	•	$2.1 million million integration-related net expense principally associated with asset write-offs and personnel overlap resulting from resource consolidation primarily associated with the Penang site closure;
	•	$0.8 million legal expenses associated with non-operating strategic projects;
	•	$0.2 million gain resulting from the decrease in fair value of the Continuous Computing contingent consideration liability;
	During the year ended December 31, 2013, the Company recorded the following restructuring and other charges:
	•	$5.5 million net expense for the severance of 203 employees, primarily related to Shanghai and Penang site reductions and severance for named executives, net of reductions resulting from changes in previously estimated amounts for employee severance and associated payroll costs;
	•	$2.9 million expense relating to the write off of the Company's Security Gateway ("SEG") purchased computer software resulting from management's decision to abandon this technology;
	•	$1.7 million gain resulting from the decrease in fair value of the Continuous Computing contingent consideration liability;
	•	$1.5 million net gain from the sale of the Company's OS-9 software assets;
	•	$1.0 million net expense principally associated with asset write-offs, legal fees, and personnel overlap resulting from resource consolidation primarily associated with our Shanghai and Penang site reductions;
	•	$0.6 million net lease abandonment expense primarily resulting from a lease abandonment charge resulting from the shuttering of the Company's San Diego facility; and
	•	$0.8 million legal expenses associated with a non-operating strategic projects.
	Accrued restructuring, which is included in other accrued liabilities and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2014 and 2013, consisted of the following (in thousands):
		Severance, payroll taxes and other employee benefits			Facility reductions			Total
	Balance accrued as of December 31, 2013	$	1,786		$	961		$	2,747
	Additions	1,637						1,637
	Reversals	(169		)	(6		)	(175		)
	Expenditures	(3,088		)	(368		)	(3,456		)
	Balance accrued as of December 31, 2014	$	166		$	587		$	753
	Of the
	$0.8 million and $2.7 million accrued restructuring balance at December 31, 2014 and 2013, $0.4 million and $0.6 million is included in other long-term liabilities on the Consolidated Balance Sheets as of December 31, 2014 and 2013. These amounts represent the long-term portion of accrued lease abandonment charges. The remaining balances are presented in other accrued liabilities on the Consolidated Balance Sheets.
	The Company evaluates the adequacy of the accrued restructuring charges on a quarterly basis. Reversals are recorded in the period in which the Company determines that expected restructuring obligations are less than the amounts accrued.

Other_Accrued_and_Other_LongTe

Other Accrued and Other Long-Term Liabilities	12 Months Ended
	Dec. 31, 2014
Other Accrued and Other Long-Term Liabilities [Abstract]
Other Accrued and Other Long-Term Liabilities	Other Accrued and Other Long-Term Liabilities
	Other accrued liabilities consisted of the following (in thousands):
		December 31,		December 31,
		2014		2013
	Accrued warranty reserve	$	2,018	$	2,599
	Adverse purchase commitments	1,733		632
	Accrued restructuring	332		2,105
	Income tax payable, net	429		508
	Contingent consideration liability	—		390
	Deferred compensation plan liability	—		1,276
	Other	2,743		2,468
	Other accrued liabilities	$	7,255	$	9,978
	Other long-term liabilities consisted of the following (in thousands):
		December 31,		December 31,
		2014		2013
	Accrued restructuring	$	421	$	642
	Accrued warranty reserve	582		729
	Long-term income tax payable	1,699		1,487
	Other	98		418
	Other long-term liabilities	$	2,800	$	3,276

ShortTerm_Borrowings

Short-Term Borrowings	12 Months Ended
	Dec. 31, 2014
Short-term Debt [Abstract]
Short-Term Borrowings	Short-Term Borrowings
	Silicon Valley Bank
	At the beginning of the first quarter of 2014, the Company had a $35.0 million secured revolving line of credit agreement (as amended, the "Agreement") with Silicon Valley Bank ("SVB") with a stated maturity date of July 28, 2016. On March 14, 2014, the Company entered into an amended and restated $25.0 million revolving line of credit agreement with SVB (the "2014 Agreement") that replaces the Agreement and has a stated maturity date of July 28, 2016. On May 30, 2014, the 2014 Agreement was amended to increase the letter of credit sublimit under the secured revolving credit facility from $1,000,000 to $2,000,000. The secured revolving credit facility under the 2014 Agreement is available for cash borrowings and is subject to a borrowing formula based upon eligible accounts receivable less outstanding letters of credit (aggregate letters of credit are not to exceed $2,000,000). Eligible accounts receivable include 80% of domestic and 65% of foreign accounts receivable (80% in certain cases), in each case, not greater than 60 days past original invoice date. The interest rate is dependent upon the Company's Liquidity (as defined in the 2014 Agreement) when compared to a pre-determined threshold (the "Liquidity Threshold"), which is defined in the 2014 Agreement as $15.0 million, with the exception of the last month end of each quarter, where it is defined as $20.0 million. Liquidity is calculated under the 2014 Agreement as unrestricted cash plus unused availability on the revolving line of credit; however, if the 4.50% convertible senior notes due 2015 are not renewed or refinanced 120 days prior to their maturity date, which is February 15, 2015, Liquidity (for purposes of testing against the Liquidity Threshold) will be reduced by the outstanding principal amount of the 2015 convertible senior notes. The calculation of interest under the 2014 Agreement is as follows:
	•	When Liquidity is above the Liquidity Threshold, the interest rate is the prime rate (as published in Wall Street Journal) plus 0.75%;
	•	When Liquidity is below the Liquidity Threshold, the interest rate is the prime rate (as published in Wall Street Journal) plus 2.25%;
	Under the 2014 Agreement, the Company is required to make interest payments monthly. The Company was further required to pay a loan modification fee of $35,000 and paid a commitment fee equal to $35,000 on July 29, 2014 and annually thereafter. Under the 2014 Agreement, the Company is required to pay the higher of actual monthly interest incurred or the interest equivalent of $10.0 million in average monthly borrowings. If the Company terminates the commitment under the 2014 Agreement prior to the maturity date, the Company is required to pay a cancellation fee equal to 1.5% of the commitment under the 2014 Agreement. As of September 1, 2014, and at all times thereafter, the Company is required to maintain a balance of at least $4,000,000 with SVB or its affiliates and the Company is required to have at least 50%of its cash with SVB or its affiliates or in an account where SVB has a control agreement.
	The 2014 Agreement requires the Company to make certain representations, warranties and other agreements that are customary in credit agreements of this type. The 2014 Agreement also includes a financial covenant that requires the Company to maintain minimum Liquidity of $10.0 million which is tested monthly.
	As of December 31, 2014 and 2013, the Company had outstanding balances of $10.0 million and $15.0 million issued on its behalf under the Agreement. At December 31, 2014, the Company had $14.4 million of total borrowing availability remaining under the Agreement. After giving effect to the repayment of the convertible senior notes, at February 17, 2015, the Company had $7.4 million of total borrowing availability remaining under the Agreement. The Company was in compliance with all covenants under the Agreement.

Convertible_Debt

Convertible Debt	12 Months Ended
	Dec. 31, 2014
Debt Disclosure [Abstract]
Convertible Debt	Convertible Debt
	2013 Convertible Senior Notes
	On February 15, 2013, the Company repaid at maturity the entire outstanding balance of the 2.75% convertible senior notes due 2013 (the "2013 convertible senior notes") in accordance with the terms thereof.
	2015 Convertible Senior Notes
	On June 20, 2012, the Company entered into subscription agreements with certain holders of the Company's 2013 convertible senior notes. Pursuant to the subscription agreements, on June 29, 2012 the Company exchanged $18.0 million aggregate principal amount of the 2013 convertible senior notes for $18.0 million aggregate principal amount of the Company's 2015 convertible senior notes. The 2015 convertible senior notes mature on February 15, 2015 and had a coupon rate of 4.5%.
	As of December 31, 2014 and 2013, the Company had outstanding 2015 convertible senior notes with a combined face value of $18.0 million. Of these balances $18.0 million and $0.0 million were classified as current liabilities in the Consolidated Balance Sheets at December 31, 2014 and 2013. As of December 31, 2014 and 2013, the estimated fair value of the Company's 2015 convertible senior notes was $18.0 million and $17.8 million.
	On February 17, 2015, the Company repaid at maturity the entire outstanding balance of the 2015 convertible senior notes in accordance with the terms thereof. No convertible senior notes were converted to common stock.
	The following table outlines the effective interest rate, contractually stated interest costs, and costs related to the amortization of issuance costs for the Company's 2013 and 2015 convertible senior notes:
		Years Ended
		December 31,
		2014	2013	2012
	Effective interest rate of 2013 convertible senior notes	NA	NA	3.73%
	Effective interest rate of 2015 convertible senior notes	4.50%	4.50%	4.50%
	Contractually stated interest costs	$810	$810	$1,289
	Amortization of interest costs	$43	$43	$398

Hedging

Hedging	12 Months Ended
	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Hedging	Hedging
	The Company’s business activities expose it to a variety of market risks, including the effects of changes in foreign currency exchange rates. The Company manages these risks through the use of forward exchange contracts, designated as foreign-currency cash flow hedges, in an attempt to reduce the potentially adverse effects of foreign currency exchange rate fluctuations that occur in the normal course of business. As such, the Company’s hedging activities are employed solely for risk management purposes. All hedging transactions are conducted with, in the opinion of management, financially stable and reputable financial institutions. As of and for the years ended December 31, 2014 and 2013, the only hedge instruments executed by the Company were associated with its exposure to fluctuations in the Indian Rupee which result from obligations such as payroll and rent paid in Rupees.
	These derivatives are recognized on the balance sheet at their fair value. Unrealized gain positions are recorded as other current assets and unrealized loss positions are recorded as other current liabilities. Changes in the fair values of the outstanding derivatives that are highly effective are recorded in other comprehensive income until net income is affected by the variability of the cash flows of the hedged transaction. Hedge ineffectiveness could result when the amount of the Company’s hedge contracts exceed the Company’s forecasted or actual transactions for which the hedge contracts were designed to hedge. Once a hedge contract matures, the associated gain (loss) on the contract will remain in other comprehensive income until the underlying hedged transaction affects net income (loss), at which time the gain (loss) will be recorded to the expense line item being hedged, which is primarily within Cost of Sales and R&D. The Company only enters into derivative contracts in order to hedge foreign currency exposure, which contracts do not exceed two years from inception. If the Company entered into a contract for speculative reasons or if the Company’s current hedge position becomes ineffective, changes in the fair values of the derivatives would be recognized in earnings in the current period.
	The Company assesses, both at the inception of the hedge and on an ongoing basis, whether the derivatives that are used in hedging transactions have been highly effective in offsetting changes in the cash flows of hedged items and whether those derivatives are expected to remain highly effective in future periods. For the years ended December 31, 2014 and 2013 the Company had no hedge ineffectiveness.
	During the year ended December 31, 2014, the Company entered into 18 new foreign currency forward contracts, with total contractual values of $11.6 million. During the year ended December 31, 2013, the Company entered into 33 new foreign currency forward contracts, with total contractual values of $12.8 million.
	A summary of the aggregate contractual or notional amounts, balance sheet location and estimated fair values of derivative financial instruments designated as cash flow hedges at December 31, 2014 is as follows (in thousands):
			Contractual / Notional			Consolidated Balance Sheet Classification		Estimated Fair Value
			Amount					Asset				(Liability)
	Foreign currency forward exchange contracts		$	14,193		Other accrued liabilities		$	—			$	(83	)
	A summary of the aggregate contractual or notional amounts, balance sheet location and estimated fair values of derivative financial instruments designated as cash flow hedges at December 31, 2013 is as follows (in thousands):
			Contractual / Notional			Consolidated Balance Sheet Classification		Estimated Fair Value
			Amount					Asset				(Liability)
	Foreign currency forward exchange contracts		$	15,328		Other accrued liabilities		$	—			$	(169	)
	There were no ineffective hedges for the years ended December 31, 2014, 2013 and 2012. The following table summarizes the effect of derivative instruments on the Consolidated Statements of Operations as follows (in thousands):
		2014			2013				2012
	Cost of sales	$	178		$	498			$	286
	Research and development	295			544				183
	Selling, general and administrative	154			158				87
	Total derivative instrument expense	$	627		$	1,200			$	556
	The following is a summary of changes to comprehensive income (loss) associated with the Company's hedging activities (in thousands):
		31-Dec-14			31-Dec-13				31-Dec-12
	Beginning balance of unrealized loss on forward exchange contracts	$	(875	)	$	(765	)		$	(774	)
	Other comprehensive loss before reclassifications	(504		)	(1,310		)		(547		)
	Amounts reclassified from other comprehensive income	627			1,200				556
	Other comprehensive income (loss)	123			(110		)		9
	Ending balance of unrealized loss on forward exchange contracts	$	(752	)	$	(875	)		$	(765	)
	Over the next twelve months, the Company expects to reclassify into earnings a loss of approximately $0.5 million currently recorded as other comprehensive income, as a result of the maturity of currently held forward exchange contracts.
	The bank counterparties in these contracts expose the Company to credit-related losses in the event of their nonperformance. However, to mitigate that risk, the Company only contracts with counterparties who meet its minimum requirements regarding counterparty credit worthiness. In addition, the Company monitors credit ratings, credit spreads and potential downgrades prior to entering into any new hedging contracts.

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	Operating Leases
	Radisys is obligated under non-cancelable operating leases for certain facilities, office equipment, and vehicles. Future minimum lease payments with initial or remaining non-cancelable lease terms in excess of one year, at December 31, 2014, were as follows (in thousands):
	For the Years Ending December 31,	Future Minimum
		Lease Payments
	2015	$	3,494
	2016	2,374
	2017	1,419
	2018	734
	2019	457
	2020+	228
	Total future minimum lease commitments	$	8,706
	Rent expense totaled $3.6 million, $4.2 million and $5.4 million for the years ended December 31, 2014, 2013 and 2012.
	Adverse Purchase Commitments
	The Company is contractually obligated to reimburse its contract manufacturer for the cost of excess inventory used in the manufacture of the Company's products if there is no alternative use. This liability, referred to as adverse purchase commitments, is presented in other accrued liabilities in the accompanying Consolidated Balance Sheets. Estimates for adverse purchase commitments are derived from reports received on a quarterly basis from the Company's contract manufacturer. Increases to this liability are charged to cost of sales. If and when the Company takes possession of inventory reserved for in this liability, the liability is transferred from other accrued liabilities to the excess and obsolete inventory valuation allowance (Note 10 — Other Accrued and Other Long-Term Liabilities) to the excess and obsolete inventory valuation allowance (Note 6 — Inventories).
	Guarantees and Indemnification Obligations
	As permitted under Oregon law, the Company has agreements whereby it indemnifies its officers, directors and certain finance employees for certain events or occurrences while the officer, director or employee is or was serving in such capacity at the request of the Company. The term of the indemnification period is for the officer’s, director’s or employee’s lifetime. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is unlimited; however, the Company has a Director and Officer insurance policy that limits its exposure and enables the Company to recover a portion of any future amounts paid. To date, the Company has not incurred any costs associated with these indemnification agreements and, as a result, management believes the estimated fair value of these indemnification agreements is minimal. Accordingly, the Company has not recorded any liabilities for these agreements as of December 31, 2014.
	The Company enters into standard indemnification agreements in its ordinary course of business. Pursuant to these agreements, the Company indemnifies, holds harmless, and agrees to reimburse the indemnified party for losses suffered or incurred by the indemnified party, generally the Company’s business partners or customers, in connection with patent, copyright or other intellectual property infringement claims by any third party with respect to the Company’s current products, as well as claims relating to property damage or personal injury resulting from the performance of services by us or the Company’s subcontractors. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is generally limited. Historically, the Company’s costs to defend lawsuits or settle claims relating to such indemnity agreements have been minimal and accordingly management believes the estimated fair value of these agreements is immaterial.
	Accrued Warranty
	The Company provides for the estimated cost of product warranties at the time it recognizes revenue. Products are generally sold with warranty coverage for a period of 12 or 24 months after shipment. Parts and labor are covered under the terms of the warranty agreement. The workmanship of the Company’s products produced by the contract manufacturer is covered under warranties provided by the contract manufacturer for 12 to 24 months. The warranty provision is based on historical experience by product family. The Company engages in product quality programs and processes, including actively monitoring and evaluating the quality of its components suppliers; however ongoing failure rates, material usage and service delivery costs incurred in correcting product failure, as well as specific product class failures out of the Company’s baseline experience, affect the estimated warranty obligation. If actual product failure rates, material usage or service delivery costs differ from estimates, revisions to the estimated warranty liability would be required.
	The following is a summary of the change in the Company’s warranty accrual reserve (in thousands):
			For the Years Ended
			December 31,
			2014			2013
	Warranty liability balance, beginning of the year		$	3,328		$	3,954
	Product warranty accruals		2,665			3,131
	Adjustments for payments made		(3,393		)	(3,757		)
	Warranty liability balance, end of the year		$	2,600		$	3,328
	At December 31, 2014 and 2013, $2.0 million and $2.6 million of the warranty liability balance are included in other accrued liabilities and $0.6 million and $0.7 million are included in other long-term liabilities in the accompanying Consolidated Balance Sheets.
	Liquidity Outlook
	At December 31, 2014, the Company's cash and cash equivalents amounted to $31.2 million. On February 17, 2015, the Company repaid at maturity the $18.0 million balance of the 2015 convertible senior notes. The Company believes that its current cash and cash equivalents, cash expected to be generated from operations and borrowings under the 2014 Agreement will satisfy the Company's short and long-term expected working capital needs, capital expenditures, acquisitions, stock repurchases, and other liquidity requirements associated with the Company's present business operations. The Company believes its current working capital, plus availability under the line of credit, provides sufficient liquidity to operate the business at normal levels; however, if available liquidity is not sufficient to meet operating requirements, the Company may, among other available options, pursue alternative financing arrangements or reduce expenditures as necessary to meet cash requirements throughout 2015.

Basic_and_Diluted_Net_IncomePe

Basic and Diluted Net IncomePer Share	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Basic and Diluted Loss per Share	Basic and Diluted Loss per Share
	A reconciliation of the numerator and the denominator used to calculate basic and diluted loss per share is as follows (in thousands, except per share amounts):
			For the Years Ended
			December 31,
			2014				2013			2012
	Numerator—Basic
	Net loss, basic		$	(27,581	)		$	(49,404	)	$	(43,474	)
	Numerator—Diluted
	Net loss, basic		$	(27,581	)		$	(49,404	)	$	(43,474	)
	Interest on convertible senior notes, net of tax benefit (B)		—				—			—
	Net loss, diluted		$	(27,581	)		$	(49,404	)	$	(43,474	)
	Denominator—Basic
	Weighted average shares used to calculate net loss per share, basic		34,699				28,805			27,174
	Denominator—Diluted
	Weighted average shares used to calculate net loss per share, basic		34,699				28,805			27,174
	Effect of escrow shares (A)		—				—			—
	Effect of convertible notes (B)		—				—			—
	Effect of dilutive restricted stock (C)(D)		—				—			—
	Effect of dilutive stock options (C)		—				—			—
	Weighted average shares used to calculate net loss per share, diluted		34,699				28,805			27,174
	Net loss per share:
	Basic		$	(0.79	)		$	(1.72	)	$	(1.60	)
	Diluted		$	(0.79	)		$	(1.72	)	$	(1.60	)
	(A)	For the years ended December 31, 2014 and 2013 there were no contingently issuable escrow shares outstanding. For the year ended December 31, 2012, 0.7 million contingently issuable escrow shares were excluded from the calculation as their effect would have been anti-dilutive.
	(B)	The following as-if converted shares associated with the Company’s 2013 and 2015 convertible senior notes were excluded from the calculation as their effect would be anti-dilutive (in thousands):
			For the Years Ended
			December 31,
			2014			2013			2012
	2013 convertible senior notes		—			—			2,450
	2015 convertible senior notes		2,110			2,110			1,067
	Total as-if converted shares excluded		2,110			2,110			3,517
	(C)	The following shares, by equity award type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands):
			For the Years Ended
			December 31,
			2014			2013			2012
	Stock options		2,841			3,465			2,555
	Restricted stock units		128			335			527
	Performance based restricted stock units (D)		240			193			—
	Total equity award shares excluded		3,209			3,993			3,082
	(D) Shares under the Long-Term Incentive Plan ("LTIP") are presented based on attainment of 100% of the performance goals being met. The LTIP provides for the grants of awards payable in shares of common stock upon the achievement of performance goals set by the Company's Compensation and Development Committee. In addition to the performance conditions, the awards contain market-based multipliers based on the average price of the Company's common stock thirty days prior to the end of each semi-annual performance period. The maximum multiplier for a given semi-annual performance period is 2.75x the original grant and overall achievement is limited to a maximum of 2.5x of the target award over the entire performance period. Based on this formula, the maximum number of shares that could be earned was 0.6 million and 0.5 million for the years ended December 31, 2014 and 2013.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	The income tax provision consists of the following (in thousands):
			For the Years Ended
			December 31,
			2014			2013				2012
	Current provision:
	Federal		$	—		$	—			$	—
	State		21			(70		)		122
	Foreign		2,127			2,299				1,252
	Total current provision		2,148			2,229				1,374
	Deferred provision (benefit):
	Federal		(73		)	—				(65		)
	State		(3		)	—				(3		)
	Foreign		420			12,726				1,284
	Total deferred provision		344			12,726				1,216
	Total income tax provision		$	2,492		$	14,955			$	2,590
	The income tax provision (benefit) differs from the amount computed by applying the statutory federal income tax rate to pretax income as a result of the following differences (dollar amounts in thousands):
			For the Years Ended December 31,
			2014						2013						2012
			$			%			$				%		$			%
	Statutory federal tax (benefit) rate		$	(8,781	)	35	%		$	(12,057	)		35	%	$	(14,309	)	35	%
	Increase (decrease) in rates resulting from:
	State taxes		(246		)	1			(356		)		1		(266		)	0.7
	Foreign dividends and unremitted earnings		(586		)	2.3			1,938				(5.6	)	6,754			(16.5	)
	Goodwill impairment expense and (benefit) from acquisitions		—			—			—				—		9,377			(22.9	)
	Valuation allowance		7,367			(29.4	)		26,662				(77.4	)	3,725			(9.1	)
	Taxes on foreign income that differ from U.S. tax rate		2,488			(9.9	)		(2,314		)		6.7		(2,796		)	6.8
	Tax credits		—			—			(252		)		0.7		(304		)	0.7
	Non-deductible stock-based compensation expense		1,206			(4.8	)		1,596				(4.6	)	1,812			(4.4	)
	Earnout liability fair value adjustment		(43		)	0.2			(596		)		1.7		(1,768		)	4.3
	Other		1,087			(4.3	)		334				(1.0	)	365			(0.9	)
	Effective tax rate		$	2,492		(9.9	)%		$	14,955			(43.4	)%	$	2,590		(6.3	)%
	The components of deferred taxes consist of the following (in thousands):
			December 31,			December 31,
			2014			2013
	Deferred tax assets:
	Accrued warranty		$	937		$	1,166
	Inventory		1,731			2,952
	Restructuring accrual		58			317
	Net operating loss carryforwards		61,521			52,248
	Tax credit carryforwards		23,866			24,692
	Stock-based compensation		2,042			2,490
	Capitalized research and development		—			144
	Fixed assets		950			2,437
	Goodwill		2,516			3,358
	Other		4,056			5,005
	Total deferred tax assets		97,677			94,809
	Less: valuation allowance		(84,240		)	(76,873		)
	Net deferred tax assets		13,437			17,936
	Deferred tax liabilities:
	Intangible assets		(11,955		)	(13,636		)
	Other		(402		)	(493		)
	Total deferred tax liabilities		(12,357		)	(14,129		)
	Total net deferred tax assets		$	1,080		$	3,807
	At December 31, 2014, the Company's unrecognized tax benefits associated with uncertain tax positions were $3.7 million, of which $3.2 million, if recognized, would favorably affect the effective tax rate.
	The Company's ongoing practice is to recognize potential accrued interest and penalties related to unrecognized tax benefits within its global operations in income tax expense. During 2014, the Company recognized a net increase of approximately $0.2 million in potential interest and penalties associated with uncertain tax positions in the Consolidated Statements of Operations. The Company had approximately $0.6 million and $0.3 million of interest and penalties associated with uncertain tax positions at December 31, 2014, which are excluded from the unrecognized tax benefits table below.
	The Company’s total amounts of unrecognized tax benefits at the beginning and end of the period are as follows (in thousands):
		Total
	Balance as of December 31, 2012	$	3,011
	Additions based on tax positions related to the current year	532
	Additions for tax positions of prior years	281
	Reductions for tax positions of prior years	(102		)
	Reductions as a result of a lapse of applicable statute of limitations	(70		)
	Other	(206		)
Balance as of December 31, 2013	$	3,446
Additions based on tax positions related to the current year	357
Additions for tax positions of prior years	76
Reductions for tax positions of prior years	(98		)
Reductions as a result of a lapse of applicable statute of limitations	(95		)
Other	2
Balance as of December 31, 2014	$	3,688
The Company and its subsidiaries are subject to federal income tax as well as income tax of multiple state and foreign jurisdictions. The Company's statutes of limitations are closed for all federal and state income tax years before 2010 and 2009. The statutes of limitations for the Company's other foreign subsidiaries are closed for all income tax years before 2006. However, to the extent allowed by law, the taxing authorities may have the right to examine prior periods where net operating losses and credits were generated and carried forward, and make adjustments up to the net operating loss and credit carryforward amounts. It is reasonably possible that the Company's uncertain tax positions, including interest and penalties, could decrease by approximately $0.5 million in the next twelve months due to the expiration of the statute of limitations and settlements primarily related to intercompany transactions..
The Company is currently under examination in India. The periods covered by the examination are the Company's assessment years 2006 through 2008 and 2010 through 2011. The examinations are in various stages of appellate proceedings and all material uncertain tax positions associated with the examination have been taken into account in the ending balance of the unrecognized tax benefits at December 31, 2014.
The Company has recorded valuation allowances of $84.2 million and $76.9 million as of December 31, 2014 and 2013. This represents a full valuation allowance against the Company's U.S. net deferred tax assets as well as a partial valuation allowance against the Company's Canadian net deferred tax assets. During 2013 the Company recognized a partial valuation allowance against the Company's Canadian net deferred tax assets in the amount of $12.5 million due to expected changes in the nature of the Company's operations in Canada. In evaluating its valuation allowance, the Company considers all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies, and recent financial performance.
At December 31, 2014 the Company had total available federal and state net operating loss carryforwards of approximately $170.6 million and $89.5 million. The federal and state net operating loss carryforwards expire between 2017 and 2034. The net operating losses from acquisitions are stated net of limitations pursuant to Section 382 of the Internal Revenue Code. The Company also had net operating loss carryforwards of approximately $4.5 million from the United Kingdom (“U.K.”) and China. The U.K. tax losses may be carried forward indefinitely provided certain requirements are met. The Chinese tax losses may be carried forward 5 years.
The Company has federal and state research and development tax credit and other federal credit carryforwards of approximately $17.1 million at December 31, 2014, to reduce future income tax liabilities.  The federal and Oregon credits expire between 2015 and 2031.  The California research and development credits do not expire.  The credits from acquisitions are stated net of limitations pursuant to Section 383 of the Internal Revenue Code.  The Company's Canadian subsidiary also had approximately $4.7 million in investment tax credit, $15.9 million of unclaimed scientific research and experimental expenditures to be carried forward and applied against future income in Canada.
Realization of the Company's foreign deferred tax assets is dependent on generating sufficient taxable income prior to the expiration of the net operating loss and tax credit carryforwards. Although realization is not assured, management believes that it is more likely than not that the results of future operations will generate sufficient taxable income to realize the balance of the deferred tax assets, net of the valuation allowance, as of December 31, 2014. The amount of the net deferred tax assets that is considered realizable, however, could be reduced if estimates of future taxable income during the carryforward periods are reduced. Should management determine that the Company would not be able to realize all or part of the net deferred tax assets in the future, adjustments to the valuation allowance for deferred tax assets may be required.
The company has provided a deferred tax liability of $0.2 million related to $0.5 million of unremitted earnings of certain foreign subsidiaries. The Company plans to indefinitely reinvest the earnings of certain foreign subsidiaries. Should the Company repatriate any foreign earnings from the remaining subsidiaries in the future, it may be required to establish an income tax liability and recognize additional income tax expense related to such earnings. The Company has indefinitely reinvested approximately $20.8 million of undistributed earnings from the foreign subsidiaries at December 31, 2014. Such earnings would be subject to U.S. and foreign taxation if repatriated to the U.S.
Pretax book loss from domestic operations for the fiscal years 2014, 2013, and 2012 was $29.9 million, $47.2 million, and $55.8 million. Pretax book income from foreign operations for the fiscal years 2014, 2013, and 2012 was $4.8 million, $12.8 million, and $14.9 million.

Employee_Benefit_Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Employee Benefit Plans	Employee Benefit Plans
	Stock-Based Employee Benefit Plans
	Equity instruments are granted to employees, directors and consultants in certain instances, as defined in the respective plan agreements.
	Stock Options and Restricted Stock Awards
	On May 15, 2007, the Company's shareholders approved the 2007 Stock Plan (as amended, the "2007 Stock Plan") which provides for issuance of stock options, restricted shares, restricted stock units and performance-based awards. Under the 2007 Stock Plan, 6,700,000 shares have been reserved and authorized for issuance to any non-employee directors and employees. The 2007 Stock Plan provides the Board of Directors discretion in creating employee equity incentives. Unless otherwise stipulated in the plan document, the Board of Directors determines stock option exercise prices, which may not be less than the fair value of Radisys common stock at the date of grant, vesting periods and the expiration periods which are a maximum of 10 years from the date of grant for certain awards.
	On August 17, 2010, the shareholders approved the Long-Term Incentive Plan ("LTIP"). The LTIP provides for the grants of awards payable in shares of common stock upon the achievement of performance goals set by the Company’s Compensation and Development Committee (“the Committee”). In addition to the performance conditions, the awards contain market-based multipliers based on the average price of the Company's common stock thirty days prior to the end of each semi-annual performance period. The maximum multiplier for a given semi-annual performance period is 2.75x the original grant and overall achievement is limited to a maximum of 2.5x of the target award over the entire performance period. The number of shares of the Company’s common stock initially reserved for issuance under the LTIP is 2,000,000 shares with a maximum of 500,000 shares in any calendar year to one participant.
	On May 3, 2011 the Company registered 600,000 shares of its common stock under the Radisys Corporation Inducement Stock Plan for CCPU Employees (the "CCPU Plan"). The CCPU Plan was adopted without shareholder approval in reliance upon the exception provided under NASDAQ Listing Rule 5635(c)(4) relating to awards granted in connection with the hiring of new employees, including grants to transferred employees in connection with a merger or acquisition. Awards under the CCPU Plan are made only to employees of Continuous Computing or its subsidiaries and became effective upon the completion of the Continuous Computing acquisition. The CCPU Plan provides for the issuance of stock options, restricted shares and restricted stock units. In 2011, the Company issued 368,000 shares under the CCPU Plan and no future awards will be granted.
	The Company assumed the stock plans of Continuous Computing on July 8, 2011. Under the terms of the Company's merger agreement with Continuous Computing, options outstanding under these plans were converted to options to purchase shares of the Company's common stock. Options issued under these plans vest over four years from the original grant date and have an expiration date of 10 years from the original grant date. The exercise price of each converted option is equal to the product of the original exercise price and the original number of options granted divided by the number of converted options received. These stock plans have been suspended and no future awards will be granted under these plans. A total of 319,000 shares of common stock were issued under the Continuous Computing stock plans.
	In accordance with the Continuous Computing merger agreement, unvested options pursuant to the Continuous Computing plans were required to be converted into multiple awards on the acquisition date, with the resulting awards becoming non-contingent and contingent options of the Company. Both the non-contingent and contingent awards continue to vest under the original service conditions of the awards. However, the contingent awards contain post-vesting restrictions tied to payment of certain merger contingencies such as the earn-out and indemnification agreements. The assumed options were valued using a Black-Scholes option-pricing model. In addition, the Company utilized the Finnerty Asian Put Option Approach to estimate the discount associated with the post-vesting restrictions for the contingent options. The resulting discount applied was 10%.
	On September 4, 2012, the Committee approved 291,375 performance based restricted stock awards under the Overlay Plan based on attainment of the performance goals at maximum levels. The Overlay provides for the grants of awards payable in shares of common stock upon the achievement of performance goals set by the Committee. The awards had four separate quarterly performance achievement dates in 2013 and vest one year after they are earned. As of December 31, 2014, there are no outstanding awards under the Overlay plan.
	Effective September 10, 2012, the Committee canceled all outstanding awards under the LTIP, resulting in the shares underlying such awards becoming eligible for grants of additional awards under the LTIP.
	Following such cancellation of awards, on September 10, 2012, the Committee approved 799,975 performance based restricted stock awards under the LTIP based on attainment of 100% of the performance goals being met. The LTIP provides for the grants of awards payable in shares of common stock upon the achievement of performance goals set by the Committee. The awards have four separate semi-annual performance achievement dates in 2013 and 2014 and vest upon attainment of the performance conditions. In addition to the performance conditions, the awards contain market-based multipliers based on the average price of the Company's common stock thirty days prior to each semi-annual performance period. The maximum multiplier for a given semi-annual performance period is 2.75x the original grant and limited to a maximum of 2.5x (or 1,999,938 shares) over the entire performance period.
	As of December 31, 2014, the Company had 2,112,242 common shares available for future grant under its equity plans.
	The following table summarizes stock option activity for 2014 (in thousands, except average prices and weighted average remaining contractual lives):
		Options			Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
	Balance, December 31, 2013	3,465			$	5.15			4.65		$	211
	Granted	445			3.32
	Exercised	(63	)		1.79
	Forfeited	(583	)		3.38
	Expired	(423	)		7.52
	Balance, December 31, 2014	2,841			$	4.95			4.4		$	43
	Options exercisable at December 31, 2014	1,742			$	5.93			3.74		$	42
	Options vested as of December 31, 2014 and expected to vest after December 31, 2014	2,783			$	4.98			4.37		$	43
	The aggregate intrinsic value in the table above represents the total pretax value, based on the Company's closing common stock price of $2.34 at December 31, 2014 that would have been received by the option holders had all option holders exercised their in-the-money options on December 31, 2014.
	Total intrinsic value of options exercised for the years ended December 31, 2014, 2013 and 2012 was $0.1 million, $0.2 million, and $0.1 million. The total amount of cash received from the exercise of options was $0.1 million in 2014, 2013 and 2012.
	As of December 31, 2014, the Company had $1.3 million in unrecognized compensation expense related to stock options which is expected to be recognized over a weighted average period of 1.5 years.
	The following table summarizes nonvested stock activity for 2014:
		Restricted Stock Units							LTIP and Overlay Awards
		Restricted Shares			Weighted Average Fair Value				Restricted Shares			Weighted Average Fair Value
	Balance, December 31, 2013	335			$	4.73			796			$	5
	Granted	102			3.51				172			3.46
	Vested	(231	)		4.84				(478	)		3.62
	Forfeited	(78	)		4.63				(250	)		3.65
	Balance, December 31, 2014	128			$	3.78			240			$	3.55
	The total fair value of restricted stock units that vested in 2014, 2013 and 2012 was $1.1 million, $1.4 million and $1.0 million. As of December 31, 2014, the Company had $0.3 million in unrecognized compensation expense related to restricted stock units which is expected to be recognized over a weighted average period of 1.0 years. The LTIP and Overlay awards are separated into four performance periods which range from September 10, 2012 to December 31, 2014. Expense associated with each service period is measured on the date the respective service period begins. At December 31, 2014, there was no remaining unrecognized compensation expense associated with the LTIP or Overlay awards.
	Employee Stock Purchase Plan
	In December 1995, the Company established an Employee Stock Purchase Plan (“ESPP”). All employees of Radisys and its subsidiaries who customarily work 20 or more hours per week, including all officers, are eligible to participate in the ESPP. Separate offerings of common stock to eligible employees under the ESPP (an “Offering”) commence on February 15, May 15, August 15 and November 15 of each calendar year (“Enrollment Dates”) and continue for a period of 18 months. Multiple separate offerings are in operation under the ESPP at any given time. An employee may participate in only one Offering at a time and may purchase shares only through payroll deductions permitted under the provisions stipulated by the ESPP. The purchase price is the lesser of 85% of the fair market value of the common stock on date of grant or that of the purchase date (“look-back feature”). Pursuant to the provisions of the ESPP, as amended, the Company is authorized to issue up to 6.7 million shares of common stock under the ESPP. At December 31, 2014, 587,739 shares were available for issuance under the ESPP.
	During the second quarter of 2009, the Board of Directors approved an amendment to the Company’s ESPP to provide for a one-year holding period with respect to common stock shares purchased by participants under the ESPP. The one-year holding period took effect during the fourth quarter of 2009. Due to the holding period, the Company applies a discount to the ESPP stock compensation to reflect the decreased liquidity. The Company utilizes the Finnerty Asian Put Option Approach to estimate the discount. Inputs for the model include the length of the holding period, volatility and risk-free rate. The discount applied in the fourth quarter of 2014, 2013 and 2012 was 13.0%.
	The following table summarizes shares issued under the ESPP (in thousands, except per share amounts):
			Year Ended December 31,
			2014				2013				2012
	Shares issued pursuant to the ESPP		242				381				352
	Cash received for the purchase of shares pursuant to the ESPP		$	514			$	767			$	1,225
	Weighted average purchase price per share		$	2.12			$	2.01			$	3.48
	Stock-Based Compensation Expense
	The Company uses the Black-Scholes model to measure the grant-date fair value of stock options and ESPP shares. The grant-date fair value of stock options that are expected to vest is recognized on a straight-line basis over the requisite service period, generally, three years. The grant date fair value of ESPP shares that are expected to vest is recognized on a straight-line basis over the requisite service period, generally, 18 months, subject to modification at the date of purchase due to the ESPP look-back feature. The estimate of the number of options, ESPP shares and restricted stock units granted under the 2007 Stock Plan expected to vest is determined based on historical experience.
	The Company estimates the fair value of stock options and purchase rights under the ESPP using a Black-Scholes option-pricing model. The calculation includes several assumptions that require management’s judgment. The expected term of the option or share is determined based on assumptions about patterns of employee exercises, and represents a probability-weighted average time period from grant until exercise of stock options, subject to information available at time of grant. Determining expected volatility generally begins with calculating historical volatility for a similar long-term period and then considering the ways in which the future is reasonably expected to differ from the past.
	The Company uses one employee population. The expected term computation is based on historical vested option exercise and post-vest forfeiture patterns and is also factored by an estimate of the expected term for fully vested and outstanding options. The estimate of the expected term for options that were fully vested and outstanding was determined as the midpoint between the evaluation date and the contractual term date of the option.
	The risk free interest rate is based on the U.S. Treasury constant maturities in effect at the time of grant for the expected term of the option or share.
	The fair value of unvested stock is the market value as of the grant date. The grant-date fair value of the restricted stock units that are expected to vest is recognized on a straight-line basis over the requisite service period, which is three years. The grant-date fair value of the LTIP and Overlay awards is recognized ratably over the service period which equals the measurement period of the award. The measurement period is the period of time over which performance objectives are expected to be achieved. Since the number of shares that may be issued under the LTIP and Overlay and the service period are both variable, the Company evaluates the LTIP and Overlay awards on a quarterly basis and adjusts the number of shares expected to be awarded based upon financial results of the Company as compared to the performance goals set for the award. Adjustments to the number of shares awarded, and to the corresponding compensation expense, are made on a cumulative basis at the date of adjustment based upon the estimated probable number of shares to be awarded. Adjustments made to compensation expense resulting from a change in the estimated probable vesting date of the awards are made on a prospective basis. Additionally, under the 2012 LTIP the Company is required to measure the fair value of the market-based condition contained in the awards. This fair value of this feature is measured at the outset of each semi-annual performance period and recognized over the service period of the respective performance period.
	The fair value calculations for stock options and ESPP shares used the following assumptions for the years ended December 31:
		Stock Options												Employee Stock
														Purchase Plan
		2014				2013				2012				2014			2013			2012
	Estimated fair value	$	0.9			$	3.45			$	2.1			$	0.95		$	1.79		$	2.05
	Expected life (in years)	4.4				4.5				4.5				1.5			1.5			1.5
	Interest rate	1.46		%		1.33		%		0.65		%		0.13		%	0.15		%	0.18		%
	Volatility	52		%		57		%		71		%		53		%	52		%	53		%
	Dividend yield	—				—				—				—			—			—
	For the years ended December 31, 2014, 2013 and 2012, stock-based compensation was recognized and allocated in the Consolidated Statements of Operations as follows (in thousands):
			2014				2013				2012
	Cost of sales		$	386			$	550			$	25
	Research and development		818				1,170				601
	Selling, general and administrative		2,893				3,578				765
Total stock-based compensation expense		$	4,097			$	5,298			$	1,391
401(k) Savings Plan
The Company established a 401(k) Savings Plan (“401(k) Plan”), a defined contribution plan, as of January 1, 1989 and amended through January 1, 2007, in compliance with Section 401(k) and other related sections of the Internal Revenue Code and corresponding regulations issued by the Department of Treasury and Section 404(c) of Employee Retirement Income Security Act of 1974 (“ERISA”), to provide retirement benefits for its U.S employees. Under the provisions of the plan, eligible employees are allowed pre-tax contributions of up to 30% of their annual compensation or the maximum amount permitted by the applicable statutes. Additionally, eligible employees can elect to make catch-up contributions, within the limits set forth by pre-tax contributions, or to the maximum amount permitted by the applicable statutes. Pursuant to the provisions of the 401(k) Plan, the Company may contribute 50% of pre-tax contributions made by eligible employees, adjusted for loans and withdrawals, up to 6% of annual compensation for each eligible employee. The Company may elect to make supplemental contributions as periodically determined by the Board of Directors at their discretion. The contributions made by the Company on behalf of eligible employees become 100% vested after three years of service, or 33% per year after one year of service. The Company’s total contributions to the 401(k) Plan amounted to $0.8 million, $0.7 million, and $0.7 million in 2014, 2013 and 2012. In addition, some of the Company’s employees outside the U.S are covered by various defined contribution plans, in compliance with the statutes of respective countries. The participants pay for the 401(k) Plan administrative expenses.
Deferred Compensation Plan
The Company terminated its Deferred Compensation Plan during 2013. The distribution of plan assets and participant balances began during 2013 and will continue through January 2015 based on participant elections. The Deferred Compensation Plan provided its directors and certain eligible employees with opportunities to defer a portion of their compensation as defined by the provisions of the plan. The Company credited additional amounts to the Deferred Compensation Plan to make up for reductions of Company contributions under the 401(k) Plan. The deferred amounts were credited with earnings and losses under investment options chosen by the participants. The Company set aside deferred amounts, which were then invested in long-term insurance contracts. All deferred amounts and earnings are 100% vested at all times, but are subject to the claims of creditors of the Company under a bankruptcy proceeding. Benefits were payable to a participant upon retirement, death, and termination of employment and paid as elected by the participant in accordance with the terms of the plan.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Segment Information	Segment Information
	During 2014, 2013 and 2012 Company's Chief Operating Decision Maker (CODM), Radisys' Chief Executive Officer, reviewed the Company's results of operations on a consolidated level and executive staff was structured by function rather than by product category. Therefore, the Company was one operating segment. Key resources, decisions, and assessment of performance were also analyzed on a company-wide level.
	In 2015, the Company implemented strategic and organizational changes resulting in a strategic focus in two areas: Software-Systems and Embedded Products and Hardware Services. As a result of these changes, the information the Company's Chief Executive Officer, or chief operating decision maker, regularly reviews for purposes of allocating resources and assessing performance changed. Beginning in fiscal year 2015, the Company will report financial performance in two segments: Software- Systems and Embedded Products and Hardware Services.
	•	Software-Systems (previously referred to as Software and Solutions). Software-Systems product are comprised of three product families: FlowEngine, MediaEngine and CellEngine.
	•	Embedded Products and Hardware Services (comprising the product-lines previously referred to as ATCA, COMe RMS and Other Products). These hardware based products provide platforms to control and move data in the core of the telecom network.
	Cost of sales, research and development and selling, general and administrative expenses are allocated to Software-Systems and Embedded Products and Hardware Services. Expenses, reversals, gains and losses not allocated to Software-Systems or Embedded Product and Hardware Services include amortization of acquired intangible assets, stock-based compensation, restructuring and other charges, and other one-time non-recurring events. These items are allocated to corporate and other.
	The Company is providing a supplemental historical reporting of revenue, gross margin and operating income by operating segment for the years ended December 31, 2014, 2013 and 2012 (in thousands):
			For the Years Ended December 31,
			2014			2013			2012
	Revenue
	Software-Systems		$	40,281		$	44,934		$	52,666
	Embedded Products and Hardware Services		152,461			192,929			233,430
	Total revenues		$	192,742		$	237,863		$	286,096
			For the Years Ended December 31,
			2014			2013			2012
	Gross margin
	Software-Systems		$	24,949		$	25,860		$	36,326
	Embedded Products and Hardware Services		35,449			47,603			61,642
	Corporate and other		(8,596		)	(9,325		)	(9,929		)
	Total gross margin		$	51,802		$	64,138		$	88,039
			For the Years Ended December 31,
			2014			2013			2012
	Loss from operations
	Software-Systems		$	(6,169	)	$	(7,974	)	$	3,735
	Embedded Products and Hardware Services		2,457			(25		)	2,661
	Corporate and other		(21,588		)	(26,767		)	(46,142		)
	Total loss from operations		$	(25,300	)	$	(34,766	)	$	(39,746	)
	Assets are not allocated to segments for internal reporting presentations. A portion of depreciation is allocated to the respective segment. It is impracticable for the Company to separately identify the amount of depreciation by segment that is included in the measure of segment profit or loss.
	The following table summarizes revenue by product group that the Company has historically disclosed. In 2015, the Company has reorganized into two operating segments, and therefore in the future these product groups will no longer be disclosed. Product group revenues are as follows (in thousands):
			For the Years Ended December 31,
			2014			2013			2012
	ATCA		$	91,094		$	116,537		$	136,572
	Software and Solutions		40,281			44,934			52,666
	COM Express and Rackmount Server		49,660			56,019			49,538
	Other Products		11,707			20,373			47,320
	Total revenues		$	192,742		$	237,863		$	286,096
	Geographic Revenues
			For the Years Ended December 31,
			2014			2013			2012
	United States		$	74,630		$	100,780		$	105,858
	Other North America		2,079			3,042			3,310
	China		31,975			29,818			45,419
	Japan		14,848			30,724			39,435
	Other APAC		26,329			20,988			31,695
	Total APAC		73,152			81,530			116,549
	Germany		2,808			11,770			18,580
	Netherlands		22,608			19,017			19,896
	Other EMEA		17,465			21,724			21,903
	Total EMEA		42,881			52,511			60,379
	Foreign Countries		118,112			137,083			180,238
	Total revenues		$	192,742		$	237,863		$	286,096
	Long-lived assets by Geographic Area
			For the Years Ended December 31,
			2014			2013
	Property and equipment, net
	United States		$	4,558		$	7,421
	Other North America		672			942
	China		2,427			3,396
	Other APAC		11			185
	Total APAC		2,438			3,581
	India		2,115			2,893
	Other EMEA		3			17
	Total EMEA		2,118			2,910
	Foreign Countries		5,228			7,433
Total property and equipment, net		$	9,786		$	14,854
Intangible assets, net
United States		$	43,224		$	56,474
Other North America		—			36
Total intangible assets, net		$	43,224		$	56,510
The following customers accounted for more than 10% of total revenues for the years ended December 31:
		2014		2013	2012
Nokia Solutions and Networks		17.00%		18.70%	22.50%
Philips Healthcare		14.90%		NA	NA
NEC		NA		NA	11.10%
The following customer accounted for more than 10% of accounts receivable for the years ended December 31:
		2014		2013
Nokia Solutions and Networks		18.50%		20.70%
Philips Healthcare		13.90%		NA

Legal_Proceedings

Legal Proceedings	12 Months Ended
	Dec. 31, 2014
Legal Proceedings Disclosure [Abstract]
Legal Proceedings	Legal Proceedings
	In the normal course of business, the Company becomes involved in litigation. As of December 31, 2014, in the opinion of management, Radisys had no pending litigation that would have a material effect on the Company’s financial position, results of operations or cash flows.

Subsequent_Events_Notes

Subsequent Events (Notes)	12 Months Ended
	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events
	On February 3, 2015, the Company announced plans it would reorganize into two operating segments - 'Software-Systems' and 'Embedded Products and Hardware Services'. In connection with these changes, the Company will restructure its research and development and sales and general administrative presence primarily within Asia and North America. The Company expects to record 2015 restructuring charges in the range of approximately $4.5 million to $5.5 million, substantially all of which will be paid in the first half of 2015 for cash severance payments and other employee-related costs.

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2014
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation
	The accompanying Consolidated Financial Statements include the accounts of the Company and its wholly owned subsidiaries. All inter-company accounts and transactions have been properly eliminated in consolidation.
Management Estimates	Management Estimates
	The Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). The preparation of these Consolidated Financial Statements requires management to make estimates and judgments that may affect the amounts reported in its Consolidated Financial Statements and accompanying notes. Actual results may differ from these estimates under different assumptions or conditions.
Revenue Recognition	Revenue Recognition
	Multiple Element Arrangements
	A significant portion of the Company's revenue relates to product sales for which revenue is recognized upon shipment, with limited judgment required related to estimates of product returns. Title transfer for substantially all product sales occurs upon delivery of products to the Company's customer's freight forwarders. The software elements included in certain components of ATCA systems and MRF products are considered to be functioning together with the non-software elements to provide the tangible product's essential functionality and these arrangements generally include multiple elements such as hardware, technical support services as well as software upgrades or enhancements on a when and if available basis. Arrangements including multiple elements require significant management judgment to evaluate the effective terms of agreements, the Company's performance commitments and determination of fair value of the various deliverables under the arrangement.
	For hardware sales which may include software, ASU 2009-13 provides a fair value hierarchy in order to determine the appropriate relative fair value for each element of an arrangement. When available, the Company uses vendor specific objective evidence (“VSOE”) to determine the estimated fair value of each element of the arrangement. In the absence of VSOE or third−party evidence ("TPE") for a delivered element, the Company then uses an estimated selling price in order to determine fair value. Estimated selling prices represent the Company's best estimate of the price at which it would transact if the deliverables were sold on a standalone basis. For technical support services, the Company generally determines its selling price based on VSOE as supported by substantive renewal rates in the related service agreements. In certain instances where VSOE cannot be established, the Company then relies upon its estimated selling price for such deliverables as TPE is generally not available due to the unique company-specific terms surrounding such service agreements. In establishing an appropriate estimated selling price for these technical support agreements, the Company considered entity specific factors such as its historical and projected costs, historical and projected revenues, and profit objectives. The Company also considered market specific factors when establishing reasonable profit objectives.
	Hardware
	Revenue from hardware products is recognized in accordance with ASC 605 Revenue Recognition. Under the Company’s standard terms and conditions of sale, the Company transfers title and risk of loss to the customer at the time product is shipped to the customer and revenue is recognized accordingly, unless customer acceptance is uncertain or significant obligations remain. The Company reduces revenue for estimated customer returns for rotation rights according to agreements with the Company's distributors. The amount of revenues derived from distributors as a percentage of revenues was 16.3%, 14.3% and 16.0% for the years ended December 31, 2014, 2013 and 2012. Revenues associated with distributors are generally recognized upon shipment as the Company has established a sell-to model with distributors. The Company accrues the estimated cost of product warranties, based on historical experience at the time the Company recognizes revenue.
	The software elements included in certain components of embedded product systems and MRF products are considered to be functioning together with the non-software elements to provide the tangible product's essential functionality and the Company’s MRF arrangements generally include multiple elements such as hardware and technical support services.
	Software licenses and royalties
	Revenue from software licenses and royalties is recognized in accordance with ASC 985 Software. The Company recognizes software license revenue at the time of shipment or upon delivery of the software master provided that the revenue recognition criteria have been met and VSOE exists to allocate the total fee to all undelivered elements of the arrangement. The Company defers revenue on arrangements, including specified software upgrades, until the specified upgrade has been delivered. Revenue from customers for prepaid, non-refundable software royalties is recorded when the revenue recognition criteria have been met. Revenue for non-prepaid royalties is recognized at the time the Company receives reporting from customers as the Company has not established an ability to reliably estimate customer royalties prior to time contractually obligated reporting is received.
	Technical support services
	Technical support services revenue is recognized as earned on the straight-line basis over the term of the contract. The fair value of the Company’s post-contract support has been determined by renewal rates within the Company’s support agreements, the actual amounts charged to customers for renewal of their support services or based on an estimated selling price.
	Professional and other services
	Professional services revenue is recognized upon completion of certain contractual milestones and customer acceptance of the services rendered. Other services revenues include hardware repair services and custom software implementation projects. Hardware repair services revenues are recognized when the services are complete. Software implementation revenues are recognized upon completion of certain contractual milestones and customer acceptance of the services rendered or as services are performed under the percentage-of-completion method when the Company is reasonably able to estimate the total effort required to complete the contract.
	Deferred income
	Deferred income represents amounts received or billed for the following types of transactions:
	•	Undelivered elements of an arrangement—Certain software sales include specified upgrades and enhancements to an existing product. Revenue for such products is deferred until the future obligation is fulfilled.
	•	Technical support services—The Company has a number of technical support agreements with customers for hardware and software maintenance. Generally, these services are billed in advance and recognized over the term of the agreement.
Capitalized Software Development Costs	Capitalized Software Development Costs
	The Company does not capitalize internal software development costs incurred in the production of computer software as the Company does not incur any material costs between the point of technological feasibility and general release of the product to customers in the future. As such software development costs are expensed as research and development (“R&D”) costs.
Shipping Costs	Shipping Costs
	The Company’s shipping and handling costs for product sales are included under cost of sales for all periods presented. For the years ended December 31, 2014, 2013 and 2012 shipping and handling costs represented approximately 2% of cost of sales.
Advertising Costs	Advertising Costs
	The Company expenses advertising costs as incurred. Advertising costs consist primarily of media, display, web, and print advertising, along with trade show costs and product demos and brochures. For the years ended December 31, 2014, 2013 and 2012 advertising costs were $1.1 million, $2.0 million and $2.1 million.
Cash Equivalents	Cash Equivalents
	The Company considers all highly liquid investments purchased with an original or remaining maturity of three months or less at the date of purchase to be cash equivalents.
Accounts Receivable	Accounts Receivable
	Trade accounts receivable are stated at invoice amount net of an allowance for doubtful accounts and do not bear interest. An allowance for doubtful accounts is maintained for estimated losses resulting from the inability of customers to make required payments. Management reviews the allowance for doubtful accounts quarterly for reasonableness and adequacy. If the financial condition of the Company’s customers were to deteriorate resulting in an impairment of their ability to make payments, additional provisions for uncollectible accounts receivable may be required. In the event the Company determined that a smaller or larger reserve was appropriate, it would record a credit or a charge in the period in which such determination is made. In addition to specific customer reserves, the Company maintains a non-specific bad debt reserve for all customers. This non-specific bad debt reserve is calculated based on the Company's historical pattern of bad debt write-offs as a percentage of gross accounts receivable for the current rolling eight quarters, which percentage is then applied to the current gross accounts receivable. The Company’s customers are concentrated in the technology indus
	try and the collection of its accounts receivable are directly associated with the operational results of the industry.
Inventories	Inventories
	Inventories are stated at the lower of cost, determined on the first-in, first-out (FIFO) basis, or market, net of an inventory valuation allowance. The Company uses a standard cost methodology to determine the cost basis for its inventories. The Company evaluates inventory on a quarterly basis for obsolete or slow-moving items to ascertain if the recorded allowance is reasonable and adequate. Inventory is written down for estimated obsolescence or unmarketable inventory equal to the difference between the cost of inventory and the estimated net realizable value based upon assumptions about future demand and market conditions. The Company's inventory valuation allowances establish a new cost basis for inventory.
Long-Lived Assets	Long-Lived Assets
	Long-lived assets, such as property and equipment and definite-life intangible assets are evaluated for impairment whenever events or changes in circumstances indicate the carrying value of an asset may not be recoverable. The Company assesses the impairment of the assets based on the undiscounted future cash flow the assets are expected to generate compared to the carrying value of the assets. If the carrying amount of the assets is determined not to be recoverable, a write-down to fair value is recorded. Management estimates future cash flows using assumptions about expected future operating performance. Management’s estimates of future cash flows may differ from actual cash flow due to, among other things, technological changes, economic conditions or changes to the Company’s business operations.
	Intangible assets with estimable useful lives are amortized on a straight-line basis over their respective estimated life and reviewed for impairment when certain triggering events suggest impairment has occurred. The Company determined a triggering event occurred during the third quarters of 2014 and 2013 and required an analysis of the recoverability of its long-lived assets. After finalizing these analyses, the Company concluded its long-lived assets were not impaired.
Property and Equipment	Property and Equipment
	Property and equipment is recorded at historical cost is depreciated or amortized on a straight-line basis according to the table below. In certain circumstances where the Company is aware that an asset’s life differs from the general guidelines set forth in its policy, management adjusts its depreciable life accordingly, to ensure expense is being recognized over the appropriate future periods. Ordinary maintenance and repair expenses are expensed when incurred.
	Machinery, equipment, furniture and fixtures		5 years
	Software, computer hardware and manufacturing test fixtures		3 years
	Engineering demonstration products and samples		1 year
	Leasehold improvements		Lesser of the lease term or estimated useful lives
Leases	Leases
	The Company leases all of its facilities, certain office equipment and vehicles under non-cancelable operating leases that expire at various dates through 2020, along with options that permit renewals for additional periods. Rent escalations are considered in the determination of straight-line rent expense for operating leases. Leasehold improvements made at the inception of or during the lease are amortized over the shorter of the asset life or the lease term.
Accrued Restructuring	Accrued Restructuring
	Expenses associated with exit or disposal activities are recognized when probable and estimable because the Company has a history of paying severance benefits. The Company has engaged, and may continue to engage, in restructuring actions, which require the Company to make significant estimates in several areas including: realizable values of assets made redundant or obsolete; expenses for severance and other employee separation costs; the ability and timing to generate sublease income, as well as the Company's ability to terminate lease obligations at the amounts estimated; and other exit costs. Should the actual amounts differ from the estimates, the amount of the restructuring charges could be materially impacted.
Warranty	Warranty
	The Company provides for the estimated cost of product warranties at the time it recognizes revenue. Products are generally sold with warranty coverage for a period of 12 or 24 months after shipment. On a quarterly basis the Company assesses the reasonableness and adequacy of the warranty liability and adjusts such amounts as necessary. Warranty reserves are included in other accrued liabilities and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2014 and 2013.
Research and Development	Research and Development
	Research, development and engineering costs are expensed as incurred. R&D expenses consist primarily of salary, bonuses and benefits for product development staff, and cost of design and development supplies and equipment, net of reimbursements for non-recurring engineering services.
Income Taxes	Income Taxes
	Income tax accounting requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement carrying amounts and tax bases of assets and liabilities. Valuation allowances are established to reduce deferred tax assets if it is “more likely than not” that all or portion of the asset will not be realized due to inability to generate sufficient taxable income in the relevant period to utilize the deferred tax asset. Tax law and rate changes are reflected in the period such changes are enacted. The Company recognizes uncertain tax positions after evaluating whether certain tax positions are more likely than not to be sustained by taxing authorities. In addition, the Company recognizes potential accrued interest and penalties related to unrecognized tax benefits in income tax expense.
Fair Value of Financial Assets and Liabilities	.
Comprehensive Income (Loss)	Comprehensive Income (Loss)
	The Company reports accumulated other comprehensive income (loss) in its Consolidated Balance Sheets. Comprehensive income (loss) includes net income (loss), translation adjustments and unrealized gains (losses) on hedging instruments net of their tax effect. The cumulative translation adjustments consist of unrealized gains (losses) for foreign currency translation.
Stock-Based Compensation	Stock-Based Compensation
	The Company measures stock-based compensation at the grant date, based on the fair value of the award, and recognizes expense on a straight-line basis over the employee's requisite service period. For performance awards the requisite service period is equal to the period of time over which performance objectives underlying the award are expected to be achieved and vested. The number of performance shares that ultimately vest depends on the achievement of certain performance criteria over the measurement period. Quarterly, the Company reevaluates the probability that the performance objectives will be met and the number of performance shares expected to vest. The amount of expense recorded each period for performance awards is based on the Company's estimate of the number of awards that will ultimately vest.
Net Income (Loss) Per Share	Net loss per share
	Basic loss per share amounts are computed based on the weighted average number of common shares outstanding. Diluted net loss per share incorporates the incremental shares issuable upon the assumed exercise of stock options, incremental shares associated with the assumed vesting of restricted stock and the assumed conversion of the Company’s convertible notes, as if the conversion to common shares had occurred at the beginning of the fiscal year and when such conversion would have a dilutive effect. When the conversion of the Company’s convertible notes are dilutive, earnings would be adjusted for interest expense incurred on the convertible notes.
Derivatives	Derivatives
	The Company hedges exposure to changes in exchange rates from the US Dollar to the Indian Rupee. These derivatives are recognized on the balance sheet at their fair value. Unrealized gain positions are recorded as other current assets and unrealized loss positions are recorded as other accrued liabilities. Changes in the fair values of the outstanding derivatives that are highly effective are recorded in other comprehensive income until net income (loss) is affected by the variability of the cash flows of the hedged transaction. Hedge ineffectiveness could result when the amount of the Company’s hedge contracts exceed the Company’s forecasted or actual transactions for which the hedge contracts were designed to hedge. Once a hedge contract matures the associated gain (loss) on the contract will remain in other comprehensive income (loss) until the underlying hedged transaction affects net income (loss), at which time the gain (loss) will be recorded to the expense line item being hedged, which is primarily cost of sales and research and development. The Company only enters into derivative contracts in order to hedge foreign currency exposure. If the Company entered into a contract for speculative reasons or if the Company’s current hedge position becomes ineffective, changes in the fair values of the derivatives would be recognized in earnings in the current period.
Foreign Currency Translation	Foreign currency translation
	Assets and liabilities of international operations using a functional currency other than the U.S. dollar are translated into U.S. dollars at exchange rates as of December 31, 2014 and 2013. Income and expense accounts are translated into U.S. dollars at the average daily rates of exchange prevailing during the period. Adjustments resulting from translating foreign functional currency financial statements into U.S. dollars are recorded as a separate component in shareholders’ equity. Foreign exchange transaction gains and losses are included in other income (expense), net, in the Consolidated Statements of Operations.
Contingent Consideration
Liquidity Outlook
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	On May 28, 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers, which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The ASU will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for the Company on January 1, 2017. Early application is not permitted. The standard permits the use of either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. The Company has not yet selected a transition method and has not determined the effect of the standard on its ongoing financial reporting.

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2014								Dec. 31, 2013
Fair Value Disclosures [Abstract]
Fair Value, Assets Measured on Recurring Basis	The following table summarizes the fair value measurements as of December 31, 2014 for the Company's financial instruments (in thousands):								The following table summarizes the fair value measurements as of December 31, 2013, for the Company’s financial instruments (in thousands):
		Fair Value Measurements as of December 31, 2014								Fair Value Measurements as of December 31, 2013
		Total			Level 1	Level 2		Level 3		Total			Level 1		Level 2			Level 3
	Foreign currency forward contracts	(83	)		—	(83	)	—	Cash surrender value of life insurance contracts(A)	$	1,866		$	—	$	1,866		$	—
									Deferred compensation liability  (A)	(1,276		)			(1,276		)
									Foreign currency forward contracts	(169		)	—		(169		)	—
									Contingent consideration liability	(390		)	—		—			(390		)
									Total	$	31		$	—	$	421		$	(390	)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following table summarizes level 3 activity for the Company's contingent consideration liability (in thousands):
		Fair Value
		Contingent Consideration
	Balance at December 31, 2012	2,541
	Additions	—
	Decrease in liability due to re-measurement	(1,891		)
	Payments	(447		)
	Accretion	187
	Balance at December 31, 2013	$	390
	Additions	—
	Decrease in liability due to re-measurement	(156		)
	Payments	(273		)
	Accretion	39
	Balance at December 31, 2014	$	—

Accounts_Receivable_and_Other_1

Accounts Receivable and Other Receivables (Tables)	12 Months Ended
	Dec. 31, 2014
Receivables [Abstract]
Accounts Receivable, Net	Accounts receivable balances consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Accounts receivable, gross	$	43,969		$	41,707
	Less: allowance for doubtful accounts	(124		)	(348		)
	Accounts receivable, net	$	43,845		$	41,359
Allowance for Doubtful Accounts	Accounts receivable at December 31, 2014 and 2013 consisted of sales to the Company’s customers which are generally based on standard terms and conditions. The Company recorded the following activity in allowance for doubtful accounts (in thousands):
		For the Years Ended
		December 31,
		2014			2013			2012
	Allowance for doubtful accounts, beginning of the year	$	348		$	779		$	828
	Charged to costs and expenses	(75		)	(310		)	—
	Less: write-offs, net of recoveries	(149		)	(121		)	(49		)
	Remaining allowance, end of the year	$	124		$	348		$	779

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2014
Inventory Disclosure [Abstract]
Schedule of Inventory, Current	Inventories consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Raw materials	$	9,219		$	21,127
	Work-in-process	1,195			1,194
	Finished goods	10,762			9,644
		21,176			31,965
	Less: inventory valuation allowance	(2,701		)	(7,037		)
	Inventories, net	$	18,475		$	24,928
Schedule of Inventory Deposit
		December 31,			December 31,
		2014			2013
	Inventory deposit (A)	$	370		$	1,289
	Less: inventory deposit valuation allowance	(370		)	(808		)
	Inventory deposit, net	$	—		$	481
	(A)	During 2013 the Company modified the inventory deposit arrangement with its former contract manufacturing partner. Prior to the modification, the Company was obligated to place a deposit with its former contract manufacturer for the cost of excess inventory that had been purchased as a result of the Company's forecasted demand when there was no alternative use. Under the new arrangement, rather than place a deposit with the former contract manufacturer, the Company was obligated to purchase the inventory on consignment. The calculation of excess inventory and its impact on the Company’s cash and reported aggregate inventory levels is the same under the consignment arrangement as it was under the deposit arrangement. In the third quarter of 2014, the Company substantially completed the transition to a new contract manufacturing partner; however, as of December 31, 2014, there was a remaining $0.1 million balance of consigned inventory at the Company’s former contract manufacturing partner and a remaining deposit of $0.4 million relating to service inventory, which is fully reserved.
Charges Associated with Inventory	The Company recorded the following charges associated with the valuation of inventory, inventory deposit and the adverse purchase commitment liability for the years ended December 31 (in thousands):
		2014			2013			2012
	Inventory, net	$	2,412		$	3,302		$	1,080
	Inventory deposit, net	126			945			926
	Adverse purchase commitments	323			327			31
Change in Inventory Valuation Allowance	The following is a summary of the change in the Company’s inventory valuation allowance for the years ended December 31 (in thousands):
		2014			2013
	Inventory valuation allowance, beginning of the year	$	7,037		$	2,199
	Usage:
	Inventory scrapped	(5,768		)	(956		)
	Inventory utilized	(1,005		)	(363		)
	Subtotal—usage	(6,773		)	(1,319		)
	Write-downs of inventory valuation	3,417			3,665
	Transfer from other liabilities (A)	(1,013		)	35
	Transfer from (to) inventory deposit valuation allowance	33			2,457
	Inventory valuation allowance, end of the year	$	2,701		$	7,037

Property_and_Equipment_Tables

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2014
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	Property and equipment consisted of the following (in thousands):
		December 31,			December 31,
		2014			2013
	Manufacturing equipment	$	24,643		$	26,779
	Office equipment and software	30,702			30,745
	Leasehold improvements	5,163			5,973
	Property and equipment, gross	60,508			63,497
	Less: accumulated depreciation and amortization	(50,722		)	(48,643		)
	Property and equipment, net	$	9,786		$	14,854

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2014
Intangible Assets [Abstract]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated future amortization expense of purchased intangible assets as of December 31, 2014 is as follows (in thousands):
	For the Years Ending December 31,	Estimated
		Intangible
		Amortization
		Amount
	2015	$	12,901
	2016	12,747
	2017	10,714
	2018	4,870
	2019	790
	Thereafter	1,202
	Total estimated future amortization expense	$	43,224
Schedule of Intangible Assets and Goodwill	The following tables summarize the Company’s total purchased intangible assets (in thousands):
		Gross		Accumulated			Net
				Amortization
	December 31, 2014
	Purchased technology	$	114,754	$	(87,398	)	$	27,356
	Patents	6,472		(6,472		)	—
	Customer lists	37,000		(26,284		)	10,716
	Trade names	11,536		(6,384		)	5,152
	Backlog	2,127		(2,127		)	—
	Total intangible assets	$	171,889	$	(128,665	)	$	43,224
	December 31, 2013
	Purchased technology	$	114,754	$	(79,189	)	$	35,565
	Patents	6,472		(6,472		)	—
	Customer lists	37,000		(21,997		)	15,003
	Trade names	11,536		(5,594		)	5,942
	Backlog	2,127		(2,127		)	—
	Total intangible assets	$	171,889	$	(115,379	)	$	56,510

Accrued_Restructuring_Tables

Accrued Restructuring (Tables)	12 Months Ended
	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Reserve by Type of Cost	ch is included in other accrued liabilities and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2014 and 2013, consisted of the following (in thousands):
		Severance, payroll taxes and other employee benefits			Facility reductions			Total
	Balance accrued as of December 31, 2013	$	1,786		$	961		$	2,747
	Additions	1,637						1,637
	Reversals	(169		)	(6		)	(175		)
	Expenditures	(3,088		)	(368		)	(3,456		)
	Balance accrued as of December 31, 2014	$	166		$	587		$	753
	Of the
Schedule of Restructuring and Related Costs	Restructuring and Other Charges
	The following table summarizes the Company's restructuring and other gains and charges as presented in the Consolidated Statement of Operations (in thousands):
		December 31, 2014			December 31, 2013			31-Dec-12
	Employee-related restructuring expenses	$	1,468		$	5,463		$	2,769
	Fair value adjustments to contingent consideration liability	(156		)	(1,740		)	(5,052		)
	Facility reductions	—			602			1,590
	Write off of purchased computer software	—			2,868			—
	Net gain from sale of OS-9 software assets	—			(1,532		)	—
	Integration-related expenses	2,097			1,039			576
	Non-recurring legal expenses	796			779			—
	Restructuring and other charges, net	$	4,205		$	7,479		$	(117	)
	Restructuring and other charges may include costs from non-recurring events such as costs incurred for employee severance, acquisition or divestiture activities, excess facility costs, certain legal costs, asset related charges and other expenses associated with business restructuring activities.
	During the year ended December 31, 2014, the Company recorded the following restructuring and other charges:
	•	$1.5 million net expense relating to the severance of employees in connection with the previously reported Penang site closure, as well as severance for 20 additional employees, net of reductions resulting from changes in previously estimated amounts for employee severance and associated payroll costs;
	•	$2.1 million million integration-related net expense principally associated with asset write-offs and personnel overlap resulting from resource consolidation primarily associated with the Penang site closure;
	•	$0.8 million legal expenses associated with non-operating strategic projects;
	•	$0.2 million gain resulting from the decrease in fair value of the Continuous Computing contingent consideration liability;
	During the year ended December 31, 2013, the Company recorded the following restructuring and other charges:
	•	$5.5 million net expense for the severance of 203 employees, primarily related to Shanghai and Penang site reductions and severance for named executives, net of reductions resulting from changes in previously estimated amounts for employee severance and associated payroll costs;
	•	$2.9 million expense relating to the write off of the Company's Security Gateway ("SEG") purchased computer software resulting from management's decision to abandon this technology;
	•	$1.7 million gain resulting from the decrease in fair value of the Continuous Computing contingent consideration liability;
	•	$1.5 million net gain from the sale of the Company's OS-9 software assets;
	•	$1.0 million net expense principally associated with asset write-offs, legal fees, and personnel overlap resulting from resource consolidation primarily associated with our Shanghai and Penang site reductions;
	•	$0.6 million net lease abandonment expense primarily resulting from a lease abandonment charge resulting from the shuttering of the Company's San Diego facility; and
	•	$0.8 million legal expenses associated with a non-operating strategic projects.
	Accrued restructuring, which is included in other accrued liabilities and other long-term liabilities in the accompanying Consolidated Balance Sheets as of December 31, 2014 and 2013, consisted of the following (in thousands):
		Severance, payroll taxes and other employee benefits			Facility reductions			Total
	Balance accrued as of December 31, 2013	$	1,786		$	961		$	2,747
	Additions	1,637						1,637
	Reversals	(169		)	(6		)	(175		)
	Expenditures	(3,088		)	(368		)	(3,456		)
	Balance accrued as of December 31, 2014	$	166		$	587		$	753
	Of the
	$0.8 million and $2.7 million accrued restructuring balance at December 31, 2014 and 2013, $0.4 million and $0.6 million is included in other long-term liabilities on the Consolidated Balance Sheets as of December 31, 2014 and 2013. These amounts represent the long-term portion of accrued lease abandonment charges. The remaining balances are presented in other accrued liabilities on the Consolidated Balance Sheets.
	The Company evaluates the adequacy of the accrued restructuring charges on a quarterly basis. Reversals are recorded in the period in which the Company determines that expected restructuring obligations are less than the amounts accrued.
	The following table summarizes the Company's restructuring and other gains and charges as presented in the Consolidated Statement of Operations (in thousands):
		December 31, 2014			December 31, 2013			31-Dec-12
	Employee-related restructuring expenses	$	1,468		$	5,463		$	2,769
	Fair value adjustments to contingent consideration liability	(156		)	(1,740		)	(5,052		)
	Facility reductions	—			602			1,590
	Write off of purchased computer software	—			2,868			—
	Net gain from sale of OS-9 software assets	—			(1,532		)	—
	Integration-related expenses	2,097			1,039			576
	Non-recurring legal expenses	796			779			—
	Restructuring and other charges, net	$	4,205		$	7,479		$	(117	)

Other_Accrued_and_Other_LongTe1

Other Accrued and Other Long-Term Liabilities (Tables)	12 Months Ended
	Dec. 31, 2014
Other Accrued and Other Long-Term Liabilities [Abstract]
Accounts Payable and Accrued Liabilities Disclosure	Other accrued liabilities consisted of the following (in thousands):
		December 31,		December 31,
		2014		2013
	Accrued warranty reserve	$	2,018	$	2,599
	Adverse purchase commitments	1,733		632
	Accrued restructuring	332		2,105
	Income tax payable, net	429		508
	Contingent consideration liability	—		390
	Deferred compensation plan liability	—		1,276
	Other	2,743		2,468
	Other accrued liabilities	$	7,255	$	9,978
Schedule of Other Long-term Liabilities	Other long-term liabilities consisted of the following (in thousands):
		December 31,		December 31,
		2014		2013
	Accrued restructuring	$	421	$	642
	Accrued warranty reserve	582		729
	Long-term income tax payable	1,699		1,487
	Other	98		418
	Other long-term liabilities	$	2,800	$	3,276

Convertible_Debt_Tables

Convertible Debt (Tables)	12 Months Ended
	Dec. 31, 2014
Short-term Debt [Line Items]
Schedule of Debt	As of December 31, 2014 and 2013, the Company had outstanding 2015 convertible senior notes with a combined face value of $18.0 million. Of these balances $18.0 million and $0.0 million were classified as current liabilities in the Consol
Convertible Senior Notes [Member]
Short-term Debt [Line Items]
Schedule of Debt	2013 Convertible Senior Notes
	On February 15, 2013, the Company repaid at maturity the entire outstanding balance of the 2.75% convertible senior notes due 2013 (the "2013 convertible senior notes") in accordance with the terms thereof.
	2015 Convertible Senior Notes
	On June 20, 2012, the Company entered into subscription agreements with certain holders of the Company's 2013 convertible senior notes. Pursuant to the subscription agreements, on June 29, 2012 the Company exchanged $18.0 million aggregate principal amount of the 2013 convertible senior notes for $18.0 million aggregate principal amount of the Company's 2015 convertible senior notes. The 2015 convertible senior notes mature on February 15, 2015 and had a coupon rate of 4.5%.
	As of December 31, 2014 and 2013, the Company had outstanding 2015 convertible senior notes with a combined face value of $18.0 million. Of these balances $18.0 million and $0.0 million were classified as current liabilities in the Consolidated Balance Sheets at December 31, 2014 and 2013. As of December 31, 2014 and 2013, the estimated fair value of the Company's 2015 convertible senior notes was $18.0 million and $17.8 million

Hedging_Tables

Hedging (Tables)	12 Months Ended
	Dec. 31, 2014												Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Foreign Exchange Contracts, Statement of Financial Position	A summary of the aggregate contractual or notional amounts, balance sheet location and estimated fair values of derivative financial instruments designated as cash flow hedges at December 31, 2014 is as follows (in thousands):												A summary of the aggregate contractual or notional amounts, balance sheet location and estimated fair values of derivative financial instruments designated as cash flow hedges at December 31, 2013 is as follows (in thousands):
			Contractual / Notional			Consolidated Balance Sheet Classification	Estimated Fair Value							Contractual / Notional		Consolidated Balance Sheet Classification	Estimated Fair Value
			Amount				Asset			(Liability)				Amount			Asset		(Liability)
	Foreign currency forward exchange contracts		$	14,193		Other accrued liabilities	$	—		$	(83	)	Foreign currency forward exchange contracts	$	15,328	Other accrued liabilities	$	—	$	(169	)
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	There were no ineffective hedges for the years ended December 31, 2014, 2013 and 2012. The following table summarizes the effect of derivative instruments on the Consolidated Statements of Operations as follows (in thousands):
		2014			2013			2012
	Cost of sales	$	178		$	498		$	286
	Research and development	295			544			183
	Selling, general and administrative	154			158			87
	Total derivative instrument expense	$	627		$	1,200		$	556
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss)

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Schedule of Future Minimum Rental Payments for Operating Leases
	For the Years Ending December 31,	Future Minimum
		Lease Payments
	2015	$	3,494
	2016	2,374
	2017	1,419
	2018	734
	2019	457
	2020+	228
	Total future minimum lease commitments	$	8,706
Schedule of Product Warranty Liability
			For the Years Ended
			December 31,
			2014			2013
	Warranty liability balance, beginning of the year		$	3,328		$	3,954
	Product warranty accruals		2,665			3,131
	Adjustments for payments made		(3,393		)	(3,757		)
	Warranty liability balance, end of the year		$	2,600		$	3,328

Basic_and_Diluted_Net_IncomePe1

Basic and Diluted Net IncomePer Share (Tables)	12 Months Ended
	Dec. 31, 2014
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted
		For the Years Ended
		December 31,
		2014			2013			2012
	Numerator—Basic
	Net loss, basic	$	(27,581	)	$	(49,404	)	$	(43,474	)
	Numerator—Diluted
	Net loss, basic	$	(27,581	)	$	(49,404	)	$	(43,474	)
	Interest on convertible senior notes, net of tax benefit (B)	—			—			—
	Net loss, diluted	$	(27,581	)	$	(49,404	)	$	(43,474	)
	Denominator—Basic
	Weighted average shares used to calculate net loss per share, basic	34,699			28,805			27,174
	Denominator—Diluted
	Weighted average shares used to calculate net loss per share, basic	34,699			28,805			27,174
	Effect of escrow shares (A)	—			—			—
	Effect of convertible notes (B)	—			—			—
	Effect of dilutive restricted stock (C)(D)	—			—			—
	Effect of dilutive stock options (C)	—			—			—
	Weighted average shares used to calculate net loss per share, diluted	34,699			28,805			27,174
	Net loss per share:
	Basic	$	(0.79	)	$	(1.72	)	$	(1.60	)
	Diluted	$	(0.79	)	$	(1.72	)	$	(1.60	)

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit)	The income tax provision consists of the following (in thousands):
			For the Years Ended
			December 31,
			2014			2013				2012
	Current provision:
	Federal		$	—		$	—			$	—
	State		21			(70		)		122
	Foreign		2,127			2,299				1,252
	Total current provision		2,148			2,229				1,374
	Deferred provision (benefit):
	Federal		(73		)	—				(65		)
	State		(3		)	—				(3		)
	Foreign		420			12,726				1,284
	Total deferred provision		344			12,726				1,216
	Total income tax provision		$	2,492		$	14,955			$	2,590
Schedule of Effective Income Tax Rate Reconciliation	The income tax provision (benefit) differs from the amount computed by applying the statutory federal income tax rate to pretax income as a result of the following differences (dollar amounts in thousands):
			For the Years Ended December 31,
			2014						2013						2012
			$			%			$				%		$			%
	Statutory federal tax (benefit) rate		$	(8,781	)	35	%		$	(12,057	)		35	%	$	(14,309	)	35	%
	Increase (decrease) in rates resulting from:
	State taxes		(246		)	1			(356		)		1		(266		)	0.7
	Foreign dividends and unremitted earnings		(586		)	2.3			1,938				(5.6	)	6,754			(16.5	)
	Goodwill impairment expense and (benefit) from acquisitions		—			—			—				—		9,377			(22.9	)
	Valuation allowance		7,367			(29.4	)		26,662				(77.4	)	3,725			(9.1	)
	Taxes on foreign income that differ from U.S. tax rate		2,488			(9.9	)		(2,314		)		6.7		(2,796		)	6.8
	Tax credits		—			—			(252		)		0.7		(304		)	0.7
	Non-deductible stock-based compensation expense		1,206			(4.8	)		1,596				(4.6	)	1,812			(4.4	)
	Earnout liability fair value adjustment		(43		)	0.2			(596		)		1.7		(1,768		)	4.3
	Other		1,087			(4.3	)		334				(1.0	)	365			(0.9	)
	Effective tax rate		$	2,492		(9.9	)%		$	14,955			(43.4	)%	$	2,590		(6.3	)%
Schedule of Deferred Tax Assets and Liabilities	The components of deferred taxes consist of the following (in thousands):
			December 31,			December 31,
			2014			2013
	Deferred tax assets:
	Accrued warranty		$	937		$	1,166
	Inventory		1,731			2,952
	Restructuring accrual		58			317
	Net operating loss carryforwards		61,521			52,248
	Tax credit carryforwards		23,866			24,692
	Stock-based compensation		2,042			2,490
	Capitalized research and development		—			144
	Fixed assets		950			2,437
	Goodwill		2,516			3,358
	Other		4,056			5,005
	Total deferred tax assets		97,677			94,809
	Less: valuation allowance		(84,240		)	(76,873		)
	Net deferred tax assets		13,437			17,936
	Deferred tax liabilities:
	Intangible assets		(11,955		)	(13,636		)
	Other		(402		)	(493		)
	Total deferred tax liabilities		(12,357		)	(14,129		)
	Total net deferred tax assets		$	1,080		$	3,807
Schedule of Unrecognized Tax Benefits Roll Forward	The Company’s total amounts of unrecognized tax benefits at the beginning and end of the period are as follows (in thousands):
		Total
	Balance as of December 31, 2012	$	3,011
	Additions based on tax positions related to the current year	532
	Additions for tax positions of prior years	281
	Reductions for tax positions of prior years	(102		)
	Reductions as a result of a lapse of applicable statute of limitations	(70		)
	Other	(206		)
	Balance as of December 31, 2013	$	3,446
	Additions based on tax positions related to the current year	357
	Additions for tax positions of prior years	76
	Reductions for tax positions of prior years	(98		)
	Reductions as a result of a lapse of applicable statute of limitations	(95		)
	Other	2
	Balance as of December 31, 2014	$	3,688

Employee_Benefit_Plans_Stock_C

Employee Benefit Plans Stock Compensation (Tables)	12 Months Ended
	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	The following table summarizes stock option activity for 2014 (in thousands, except average prices and weighted average remaining contractual lives):
		Options			Weighted Average Exercise Price				Weighted Average Remaining Contractual Term (Years)		Aggregate Intrinsic Value
	Balance, December 31, 2013	3,465			$	5.15			4.65		$	211
	Granted	445			3.32
	Exercised	(63	)		1.79
	Forfeited	(583	)		3.38
	Expired	(423	)		7.52
	Balance, December 31, 2014	2,841			$	4.95			4.4		$	43
	Options exercisable at December 31, 2014	1,742			$	5.93			3.74		$	42
	Options vested as of December 31, 2014 and expected to vest after December 31, 2014	2,783			$	4.98			4.37		$	43
Schedule of Nonvested Share Activity	The following table summarizes nonvested stock activity for 2014:
		Restricted Stock Units							LTIP and Overlay Awards
		Restricted Shares			Weighted Average Fair Value				Restricted Shares			Weighted Average Fair Value
	Balance, December 31, 2013	335			$	4.73			796			$	5
	Granted	102			3.51				172			3.46
	Vested	(231	)		4.84				(478	)		3.62
	Forfeited	(78	)		4.63				(250	)		3.65
	Balance, December 31, 2014	128			$	3.78			240			$	3.55
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity	The following table summarizes shares issued under the ESPP (in thousands, except per share amounts):
			Year Ended December 31,
			2014				2013				2012
	Shares issued pursuant to the ESPP		242				381				352
	Cash received for the purchase of shares pursuant to the ESPP		$	514			$	767			$	1,225
	Weighted average purchase price per share		$	2.12			$	2.01			$	3.48
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions	The fair value calculations for stock options and ESPP shares used the following assumptions for the years ended December 31:
		Stock Options												Employee Stock
														Purchase Plan
		2014				2013				2012				2014			2013			2012
	Estimated fair value	$	0.9			$	3.45			$	2.1			$	0.95		$	1.79		$	2.05
	Expected life (in years)	4.4				4.5				4.5				1.5			1.5			1.5
	Interest rate	1.46		%		1.33		%		0.65		%		0.13		%	0.15		%	0.18		%
	Volatility	52		%		57		%		71		%		53		%	52		%	53		%
	Dividend yield	—				—				—				—			—			—
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	For the years ended December 31, 2014, 2013 and 2012, stock-based compensation was recognized and allocated in the Consolidated Statements of Operations as follows (in thousands):
			2014				2013				2012
	Cost of sales		$	386			$	550			$	25
	Research and development		818				1,170				601
	Selling, general and administrative		2,893				3,578				765
	Total stock-based compensation expense		$	4,097			$	5,298			$	1,391

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2014
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	The Company is providing a supplemental historical reporting of revenue, gross margin and operating income by operating segment for the years ended December 31, 2014, 2013 and 2012 (in thousands):
		For the Years Ended December 31,
		2014			2013			2012
	Revenue
	Software-Systems	$	40,281		$	44,934		$	52,666
	Embedded Products and Hardware Services	152,461			192,929			233,430
	Total revenues	$	192,742		$	237,863		$	286,096
		For the Years Ended December 31,
		2014			2013			2012
	Gross margin
	Software-Systems	$	24,949		$	25,860		$	36,326
	Embedded Products and Hardware Services	35,449			47,603			61,642
	Corporate and other	(8,596		)	(9,325		)	(9,929		)
	Total gross margin	$	51,802		$	64,138		$	88,039
		For the Years Ended December 31,
		2014			2013			2012
	Loss from operations
	Software-Systems	$	(6,169	)	$	(7,974	)	$	3,735
	Embedded Products and Hardware Services	2,457			(25		)	2,661
	Corporate and other	(21,588		)	(26,767		)	(46,142		)
	Total loss from operations	$	(25,300	)	$	(34,766	)	$	(39,746	)
Revenue from External Customers by Products and Services	Product group revenues are as follows (in thousands):
		For the Years Ended December 31,
		2014			2013			2012
	ATCA	$	91,094		$	116,537		$	136,572
	Software and Solutions	40,281			44,934			52,666
	COM Express and Rackmount Server	49,660			56,019			49,538
	Other Products	11,707			20,373			47,320
	Total revenues	$	192,742		$	237,863		$	286,096
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas
		For the Years Ended December 31,
		2014			2013
	Property and equipment, net
	United States	$	4,558		$	7,421
	Other North America	672			942
	China	2,427			3,396
	Other APAC	11			185
	Total APAC	2,438			3,581
	India	2,115			2,893
	Other EMEA	3			17
	Total EMEA	2,118			2,910
	Foreign Countries	5,228			7,433
	Total property and equipment, net	$	9,786		$	14,854
	Intangible assets, net
	United States	$	43,224		$	56,474
	Other North America	—			36
	Total intangible assets, net	$	43,224		$	56,510
		For the Years Ended December 31,
		2014			2013			2012
	United States	$	74,630		$	100,780		$	105,858
	Other North America	2,079			3,042			3,310
	China	31,975			29,818			45,419
	Japan	14,848			30,724			39,435
	Other APAC	26,329			20,988			31,695
	Total APAC	73,152			81,530			116,549
	Germany	2,808			11,770			18,580
	Netherlands	22,608			19,017			19,896
	Other EMEA	17,465			21,724			21,903
	Total EMEA	42,881			52,511			60,379
	Foreign Countries	118,112			137,083			180,238
	Total revenues	$	192,742		$	237,863		$	286,096
Schedule of Revenue by Major Customers by Reporting Segments
		2014		2013	2012
	Nokia Solutions and Networks	17.00%		18.70%	22.50%
	Philips Healthcare	14.90%		NA	NA
	NEC	NA		NA	11.10%
Schedules of Concentration of Risk, by Risk Factor
		2014		2013
	Nokia Solutions and Networks	18.50%		20.70%
	Philips Healthcare	13.90%		NA

Significant_Accounting_Policie2

Significant Accounting Policies Distributor Revenue (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Distributor Revenue	16.30%	14.30%	16.00%

Significant_Accounting_Policie3

Significant Accounting Policies Advertising Costs (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Advertising Expense	$1.10	$2	$2.10

Significant_Accounting_Policie4

Significant Accounting Policies Property, Plant and Equipment (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Impairment of goodwill	$0	$0	$29,748	[1]
Machinery, Equipment, Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Software, Computer Hardware and Manufacturing Test [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Engineering Demonstration Products and Samples [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year
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Goodwill_Details

Goodwill (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Goodwill [Abstract]
Impairment of goodwill	$0	$0	$29,748	[1]
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments Fair Value Measurements (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Deferred Compensation Liability, Current	$0	$1,276,000
Impairment Assessment, Amount that Undiscounted Future Cash Flows Exceed Book Value	5,000,000
Impairment Assessment, Percentage that Undiscounted Future Cash Flows Exceed Book Value	28.00%
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts		0
Deferred Compensation Liability, Classified, Noncurrent
Foreign currency forward contracts	0	0
Contingent Consideration Liability		0
Total		0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts		1,866,000
Deferred Compensation Liability, Classified, Noncurrent		-1,276,000
Foreign currency forward contracts	-83,000	-169,000
Contingent Consideration Liability		0
Total		421,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts		0
Deferred Compensation Liability, Classified, Noncurrent
Foreign currency forward contracts	0	0
Contingent Consideration Liability	0	-390,000
Total		-390,000
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	39,000	187,000
Re-Measurement of Liability [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings	-156,000	-1,891,000
Continuous Computing [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Business Combination, Contingent Consideration Arrangements, Measurement Period After Close Date1	36 months
Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts		1,866,000
Deferred Compensation Liability, Classified, Noncurrent		-1,276,000
Foreign currency forward contracts	-83,000	-169,000
Contingent Consideration Liability		-390,000
Total		$31,000

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments Level 3 (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Payments	($273)	($447)
Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	390
Fair value level 3 activity	39	187
Ending Balance	0	390
Fair Value, Inputs, Level 3 [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Additions	0	0
Fair Value, Inputs, Level 3 [Member] | Change in estimate
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair value level 3 activity	-156	-1,891
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance			2,541
Ending Balance		$390	$2,541

Accounts_Receivable_and_Other_2

Accounts Receivable and Other Receivables (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$43,969	$41,707
Less: allowance for doubtful accounts	-124	-348
Accounts Receivable, Net	43,845	41,359
Allowance for Doubtful Accounts Receivable [Roll Forward]
Allowance for Doubtful Accounts Receivable	348	779	828
Allowance for Doubtful Accounts Receivable, Charge-offs	-75	-310	0
Allowance for Doubtful Accounts Receivable, Recoveries	-149	-121	-49
Allowance for Doubtful Accounts Receivable	124	348	779
Other receivables	$6,324	$2,634

Inventories_Details

Inventories (Details) (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Inventory, Net [Abstract]
Raw materials	$9,219,000		$21,127,000
Work-in-process	1,195,000		1,194,000
Finished goods	10,762,000		9,644,000
Inventory, Gross	21,176,000		31,965,000
Less: inventory valuation allowance	-2,701,000		-7,037,000		-2,199,000
Inventories, net	18,475,000		24,928,000
Other Inventory, Net [Abstract]
Inventory deposit (A)	370,000	[1]	1,289,000	[1]
Less: inventory deposit valuation allowance	-370,000		-808,000
Inventory deposit, net	0		481,000
Inventory Deposit under Consignment	10,300,000
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	2,600,000		12,000,000
Inventory, net	2,412,000		3,302,000		1,080,000
Inventory deposit, net	126,000		945,000		926,000
Adverse purchase commitments	323,000		327,000		31,000
Inventory Valuation Allowance [Roll Forward]
Inventory valuation allowance, beginning of the year	7,037,000		2,199,000
Inventory scrapped	-5,768,000		-956,000
Inventory utilized	-1,005,000		-363,000
Subtotal—usage	-6,773,000		-1,319,000
Inventory, net	2,539,000		3,302,000		1,232,000
Transfer from (to) inventory deposit valuation allowance	33,000		2,457,000
Inventory valuation allowance, end of the year	2,701,000		7,037,000		2,199,000
Write-Downs of Inventory Valuation [Member]
Inventory Valuation Allowance [Roll Forward]
Inventory, net	3,417,000		3,665,000
Transfers to Adverse Purchase Commitments [Member]
Inventory Valuation Allowance [Roll Forward]
Inventory, net	($1,013,000)	[2]	$35,000	[2]
[1]	(A)During 2013 the Company modified the inventory deposit arrangement with its former contract manufacturing partner. Prior to the modification, the Company was obligated to place a deposit with its former contract manufacturer for the cost of excess inventory that had been purchased as a result of the Company's forecasted demand when there was no alternative use. Under the new arrangement, rather than place a deposit with the former contract manufacturer, the Company was obligated to purchase the inventory on consignment. The calculation of excess inventory and its impact on the Company’s cash and reported aggregate inventory levels is the same under the consignment arrangement as it was under the deposit arrangement. In the third quarter of 2014, the Company substantially completed the transition to a new contract manufacturing partner; however, as of December 31, 2014, there was a remaining $0.1 million balance of consigned inventory at the Company’s former contract manufacturing partner and a remaining deposit of $0.4 million relating to service inventory, which is fully reserved.
[2]	Transfer from other liabilities is related to obsolete inventory purchased from contract manufacturers during the year which was previously reserved for as an adverse purchase commitment. (Note 10—Other Accrued and Other Long-Term Liabilities and Note 14—Commitments and Contingencies.)

Property_and_Equipment_Details

Property and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$60,508,000	$63,497,000
Less: accumulated depreciation and amortization	-50,722,000	-48,643,000
Property and equipment, net	9,786,000	14,854,000
Depreciation	7,000,000	8,000,000	7,300,000
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	24,643,000	26,779,000
Office Equipment And Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	30,702,000	30,745,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$5,163,000	$5,973,000

Intangible_Assets_FiniteLived_

Intangible Assets Finite-Lived Intangible Assets by Major Class (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$171,889,000	$171,889,000
Finite-Lived Intangible Assets, Accumulated Amortization	-128,665,000	-115,379,000
Total estimated future amortization expense	43,224,000	56,510,000
Amortization of Intangible Assets	13,300,000	13,800,000	14,800,000
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Purchased Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	114,754,000	114,754,000
Finite-Lived Intangible Assets, Accumulated Amortization	-87,398,000	-79,189,000
Total estimated future amortization expense	27,356,000	35,565,000
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	6,472,000	6,472,000
Finite-Lived Intangible Assets, Accumulated Amortization	-6,472,000	-6,472,000
Total estimated future amortization expense	0	0
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	37,000,000	37,000,000
Finite-Lived Intangible Assets, Accumulated Amortization	-26,284,000	-21,997,000
Total estimated future amortization expense	10,716,000	15,003,000
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	11,536,000	11,536,000
Finite-Lived Intangible Assets, Accumulated Amortization	-6,384,000	-5,594,000
Total estimated future amortization expense	5,152,000	5,942,000
Order or Production Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	2,127,000	2,127,000
Finite-Lived Intangible Assets, Accumulated Amortization	-2,127,000	-2,127,000
Total estimated future amortization expense	$0	$0

Intangible_Assets_Future_Amort

Intangible Assets Future Amortization of Finite Lived Intangibles (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
2014	$12,901,000
2015	12,747,000
2016	10,714,000
2017	4,870,000
2018	790,000
Thereafter	1,202,000
Total estimated future amortization expense	$43,224,000	$56,510,000

Accrued_Restructuring_Details

Accrued Restructuring (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring and Related Activities [Abstract]
Employee-related restructuring expenses	$1,468	$5,463	$2,769
Fair value adjustments to contingent consideration liability	-156	-1,740	-5,052
Facility reductions	0	602	1,590
Write off of purchased computer software	0	2,868	0
Net gain from sale of OS-9 software assets	0	-1,532	0
Integration-related expenses	2,097	1,039	576
Non-recurring legal expenses	796	779	0
Restructuring and other charges, net	$4,205	$7,479	($117)	[1]
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Accrued_Restructuring_Restruct

Accrued Restructuring Restructuring Reserve Rollforward (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2013	$2,747
Additions	1,637
Reversals	-175
Expenditures	-3,456
Balance accrued as of December 31, 2014	753
Other Noncurrent Liabilities [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2013		600
Balance accrued as of December 31, 2014	400	600
Severance, Payroll Taxes and Other Employee Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2013	1,786
Additions	1,637
Reversals	-169
Expenditures	-3,088
Balance accrued as of December 31, 2014	166
Lease Abandonment Charges [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2013	961
Additions
Reversals	-6
Expenditures	-368
Balance accrued as of December 31, 2014	$587

Other_Accrued_and_Other_LongTe2

Other Accrued and Other Long-Term Liabilities (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued restructuring	$332	$2,105
Taxes Payable, Current	429	508
Accrued Income Taxes, Noncurrent	1,699	1,487
Contingent consideration liability	0	390
Deferred compensation plan liability	0	1,276
Adverse purchase commitments	1,733	632
Other	2,743	2,468
Other accrued liabilities	7,255	9,978
Accrued restructuring	421	642
Other	98	418
Other long-term liabilities	2,800	3,276
Warranty Reserves
Accrued warranty reserve	2,018	2,599
Warranty Reserves
Accrued warranty reserve	$582	$729

ShortTerm_Borrowings_Details

Short-Term Borrowings (Details) (USD $)	12 Months Ended	0 Months Ended
	Dec. 31, 2014	Mar. 14, 2014	Dec. 31, 2013	Sep. 01, 2014	30-May-14	Feb. 17, 2015
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	35,000,000
Line of credit	10,000,000		15,000,000
Line of Credit Facility, Remaining Borrowing Capacity	14,400,000
Convertible Senior Notes [Member] | 2015 Convertible Senior Notes
Line of Credit Facility [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Debt Instrument, Liquidity Threshold, Period Prior to Maturity Date	120 days
Line of Credit [Member] | 2014 Debt Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Current Borrowing Capacity		25,000,000
Line of Credit, Liquidity Threshold		15,000,000
Line of Credit, Liquidity Threshold, Last Month of Quarter		20,000,000
Line of Credit, Modification Fee		35,000
Line of Credit Facility, Commitment Fee Amount		35,000
Debt Instrument, Average Monthly Interest Expense		10,000,000
Line of Credit Facility, Cancellation Fee Percentage		1.50%
Line of Credit Facility, Covenant Compliance, Minimum Required Balance				4,000,000
Line of Credit Facility, Covenant Compliance, Minimum Cash Required, Percent				50.00%
Line of Credit Facility, Debt Covenant, Liquidity		10,000,000
United States Accounts Receivable Balance [Member] | Line of Credit [Member] | 2014 Debt Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable	80.00%
Foreign Accounts Receivable Balance [Member] | Line of Credit [Member] | 2014 Debt Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable	65.00%
Certain Cases [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable	80.00%
Maximum | Line of Credit [Member] | 2014 Debt Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable past due	60 days
Maximum | Line of Credit [Member] | 2014 Debt Agreement [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		2.25%
Minimum | Line of Credit [Member] | 2014 Debt Agreement [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Basis Spread on Variable Rate		0.75%
Letter of Credit [Member] | Line of Credit [Member] | 2014 Debt Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					2,000,000
Line of Credit Facility, Current Borrowing Capacity		2,000,000			1,000,000
Subsequent Event
Line of Credit Facility [Line Items]
Line of Credit Facility, Remaining Borrowing Capacity						$7,400,000

Convertible_Debt_Details

Convertible Debt (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 15, 2013
Debt Instrument [Line Items]
Convertible Senior Notes, Total	$18,000,000
Convertible senior notes, current	18,000,000	0
2015 Convertible Senior Notes
Debt Instrument [Line Items]
Convertible senior notes, current	18,000,000
Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Fair Value Disclosure	18,000,000	17,800,000
Convertible Senior Notes [Member] | 2013 Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage				2.75%
Debt Instrument, Interest Rate, Effective Percentage			3.73%
Contractually stated interest costs	810,000	810,000	1,289,000
Amortization of interest costs	$43,000	$43,000	$398,000
Convertible Senior Notes [Member] | 2015 Convertible Senior Notes
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.50%
Debt Instrument, Coupon Rate, Stated Percentage	4.50%
Debt Instrument, Interest Rate, Effective Percentage	4.50%	4.50%	4.50%

Hedging_Details

Hedging (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Gain (Loss) Reclassified to Cost of Sales, Net	$178,000	$498,000	$286,000
Cash Flow Hedge Gain (Loss) Reclassified To Research and Development	295,000	544,000	183,000
Cash Flow Hedge Gain (Loss) Reclassified To Selling, General and Administrative	154,000	158,000	87,000
Beginning balance of unrealized loss on forward exchange contracts	-875,000	-765,000	-774,000
Other comprehensive loss before reclassifications	-504,000	-1,310,000	-547,000
Amounts reclassified from other comprehensive income	627,000	1,200,000	556,000
Other comprehensive income (loss)	123,000	-110,000	9,000
Ending balance of unrealized loss on forward exchange contracts	-752,000	-875,000	-765,000
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	627,000	1,200,000	556,000
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	14,193,000	15,328,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	-500,000
Foreign Exchange Forward [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Assets at Fair Value	0	0
Foreign Exchange Forward [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value		-169,000
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative, Number of New Instruments During Period	0	0
Derivative, New Instruments During Period, Notional Amount	11,600,000	12,800,000
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Exchange Forward [Member] | Other Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	($83,000)

Commitments_and_Contingencies_1

Commitments and Contingencies Operating Leases (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Leases [Abstract]
2014	$3,494,000
2015	2,374,000
2016	1,419,000
2017	734,000
2018	457,000
2019 and thereafter (through 2020)	228,000
Total future minimum lease commitments	8,706,000
Operating Leases, Rent Expense, Net	$3,600,000	$4,200,000	$5,400,000

Commitments_and_Contingencies_2

Commitments and Contingencies (Details) (USD $)	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Feb. 17, 2015	Dec. 31, 2012	Dec. 31, 2011
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liability balance, beginning of the year	$3,328,000	$3,954,000
Product warranty accruals	2,665,000	3,131,000
Adjustments for payments made	-3,393,000	-3,757,000
Warranty liability balance, end of the year	2,600,000	3,328,000
Cash and Cash Equivalents, at Carrying Value	31,242,000	25,482,000		33,182,000	47,770,000
Warranty Reserves
Class of Warrant or Right [Line Items]
Accrued warranty reserve	2,018,000	2,599,000
Warranty Reserves
Class of Warrant or Right [Line Items]
Accrued warranty reserve	582,000	729,000
Subsequent Event | 2015 Convertible Senior Notes
Movement in Standard Product Warranty Accrual [Roll Forward]
Repayments of convertible debt			$18,000,000

Basic_and_Diluted_Net_IncomePe2

Basic and Diluted Net IncomePer Share Earnings (Loss) Per Share Calculation (Details) (USD $)	3 Months Ended																12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	($4,467,000)	[1]	($4,469,000)	[1]	($8,211,000)	[1]	($10,434,000)	[1]	($26,015,000)	[1]	($12,720,000)	[1]	($4,112,000)	[1]	($6,557,000)	[1]	($27,581,000)	($49,404,000)	($43,474,000)	[2]
Interest on convertible notes, net of tax benefit																	0	0	0
Net loss, diluted																	($27,581,000)	($49,404,000)	($43,474,000)
Weighted average shares used to calculate net loss per share, basic																	34,699	28,805	27,174	[2]
Effect of escrow shares (in shares)																	0	0	0
Effect of convertible notes (in shares)																	0	0	0
Weighted average shares used to calculate net income (loss) per share, diluted																	34,699	28,805	27,174	[2]
Basic (in dollars per share)	($0.12)		($0.12)		($0.23)		($0.35)		($0.89)		($0.44)		($0.14)		($0.23)		($0.79)	($1.72)	($1.60)	[2]
Diluted (in dollars per share)	($0.12)		($0.12)		($0.23)		($0.35)		($0.89)		($0.44)		($0.14)		($0.23)		($0.79)	($1.72)	($1.60)	[2]
Total equity award shares excluded																	3,209	3,993	3,082
Restricted Stock Units (RSUs) [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive equity awards (in shares)																	0	0	0
Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive equity awards (in shares)																	0	0	0
Contingent Consideration Classified as Equity [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Total equity award shares excluded																	0	0	700
[1]	The comparability of our income (loss) from operations and net income (loss) per share was affected by the following unusual income or expense items:•During the fourth quarter of 2013, the Company recorded a $12.5 million loss associated with the establishment of a valuation allowance against certain of the Company's foreign deferred tax assets.•During the first quarter of 2013, the Company recorded a $2.9 million loss associated to the write off of the Company's Security Gateway ("SEG") purchased computer software due to management's decision to abandon future development of this technology.•During the first quarter of 2013, the Company recorded a $1.5 million gain associated with the the sale of the Company's OS-9 software assets.
[2]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Basic_and_Diluted_Net_IncomePe3

Basic and Diluted Net IncomePer Share Anti-Dilutive Securities (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options	2,841,000	3,465,000	2,555,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	2,841,000	3,465,000
Total equity award shares excluded	3,209,000	3,993,000	3,082,000
Semi-annual Performance Period, Maximum Multiplier of Original Grant	2.75
Entire Performance, Overall Achievement, Maximum Multiplier of Target Award	2.5
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total equity award shares excluded	2,110,000	2,110,000	3,517,000
Convertible Debt Securities [Member] | 2013 Convertible Senior Notes [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total equity award shares excluded	0	0	2,450,000
Convertible Debt Securities [Member] | 2015 Convertible Senior Notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Total equity award shares excluded	2,110,000	2,110,000	1,067,000
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	128,000	335,000	527,000
Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	240,000	193,000	0
Long-term Incentive Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	600,000	500,000

Income_Taxes_Current_Provision

Income Taxes Current Provision (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)	$0	$0	$0
Current State and Local Tax Expense (Benefit)	21	-70	122
Current Foreign Tax Expense (Benefit)	2,127	2,299	1,252
Current Income Tax Expense (Benefit)	2,148	2,229	1,374
Deferred Federal Income Tax Expense (Benefit)	-73	0	-65
Deferred State and Local Income Tax Expense (Benefit)	-3	0	-3
Deferred Foreign Income Tax Expense (Benefit)	420	12,726	1,284
Deferred Income Tax Expense (Benefit)	344	12,726	1,216
Income tax expense	$2,492	$14,955	$2,590	[1]
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Income_Taxes_Reconciliation_of

Income Taxes Reconciliation of Statutory Federal Tax Rates and Effective Tax Rates (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statutory federal tax (benefit) rate	($8,781)	($12,057)	($14,309)
Statutory federal tax (benefit) rate	35.00%	35.00%	35.00%
State taxes	-246	-356	-266
State taxes	1.00%	1.00%	0.70%
Foreign dividends and unremitted earnings	-586	1,938	6,754
Foreign dividends and unremitted earnings	2.30%	-5.60%	-16.50%
Goodwill impairment expense and (benefit) from acquisitions	0	0	9,377
Goodwill impairment expense and (benefit) from acquisitions	0.00%	0.00%	-22.90%
Valuation allowance	7,367	26,662	3,725
Valuation allowance	-29.40%	-77.40%	-9.10%
Taxes on foreign income that differ from U.S. tax rate	2,488	-2,314	-2,796
Taxes on foreign income that differ from U.S. tax rate	-9.90%	6.70%	6.80%
Tax credits	0	-252	-304
Tax credits	0.00%	0.70%	0.70%
Non-deductible stock-based compensation expense	1,206	1,596	1,812
Non-deductible stock-based compensation expense	-4.80%	-4.60%	-4.40%
Earnout liability fair value adjustment	-43	-596	-1,768
Effective Income Tax Rate Reconciliation, Earn Out Liability, Percent	0.20%	1.70%	4.30%
Effective Income Tax Rate Reconciliation, Other Adjustments	-4.30%	-1.00%	-0.90%
Other	1,087	334	365
Effective tax rate	$2,492	$14,955	$2,590	[1]
Effective tax rate	-9.90%	-43.40%	-6.30%
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Income_Taxes_Deferred_Tax_Reco

Income Taxes Deferred Tax Reconciliation (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Deferred Tax Reconciliation [Abstract]
Deferred Tax Assets, Tax Credit Carryforwards, Research	$17,100,000
Deferred Tax Liabilities, Undistributed Foreign Earnings	200,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves	937,000	1,166,000
Deferred Tax Assets, Inventory	1,731,000	2,952,000
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Restructuring Charges	58,000	317,000
Deferred Tax Assets, Operating Loss Carryforwards	61,521,000	52,248,000
Deferred Tax Assets, Tax Credit Carryforwards	23,866,000	24,692,000
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	2,042,000	2,490,000
Deferred Tax Assets, in Process Research and Development	0	144,000
Deferred Tax Assets, Property, Plant and Equipment	950,000	2,437,000
Deferred Tax Assets, Goodwill and Intangible Assets	2,516,000	3,358,000
Deferred Tax Assets, Other	4,056,000	5,005,000
Deferred Tax Assets, Gross	97,677,000	94,809,000
Deferred Tax Assets, Valuation Allowance	-84,240,000	-76,873,000
Deferred Tax Assets, Net of Valuation Allowance	13,437,000	17,936,000
Deferred Tax Liabilities, Intangible Assets	-11,955,000	-13,636,000
Deferred Tax Liabilities, Other	-402,000	-493,000
Deferred Tax Liabilities, Net	-12,357,000	-14,129,000
Deferred Tax Assets, Net	1,080,000	3,807,000
Undistributed Earnings of Foreign Subsidiaries	$500,000

Income_Taxes_Unrecognized_Tax_

Income Taxes Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$3,200,000
Unrecognized Tax Benefits	3,446,000	3,011,000
Additions based on tax positions related to the current year	357,000	532,000
Additions for tax positions of prior years	76,000	281,000
Reductions for tax positions of prior years	-98,000	-102,000
Reductions as a result of a lapse of applicable statute of limitations	-95,000	-70,000
Other	-2,000	-206,000
Unrecognized Tax Benefits	3,688,000	3,446,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$200,000

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits	$3,688,000								$3,446,000								$3,688,000	$3,446,000	$3,011,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	3,200,000																3,200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense																	200,000
Uncertain Tax Benefits, Potential Change, Current																	500,000
Deferred Tax Assets, Valuation Allowance	84,240,000								76,873,000								84,240,000	76,873,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	17,100,000																17,100,000
Investment Tax Credit																	4,700,000
Deferred Tax Liabilities, Undistributed Foreign Earnings	200,000																200,000
Undistributed Earnings of Foreign Subsidiaries	500,000																500,000
Indefinite Reinvestment of Undistributed Earnings from Foreign Subsidiaries																	20,800,000
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-4,304,000	[1]	-4,103,000	[1]	-7,429,000	[1]	-9,464,000	[1]	-13,947,000	[1]	-11,996,000	[1]	-3,273,000	[1]	-5,550,000	[1]	-25,089,000	-34,449,000	-40,884,000	[2]
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	170,600,000								89,500,000								170,600,000	89,500,000
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	4,500,000																4,500,000
Maximum
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Year																	2034
CANADA
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Valuation Allowance	12,500,000																12,500,000
Deferred Tax Assets, Tax Credit Carryforwards, Research	15,900,000																15,900,000
Domestic [Member]
Operating Loss Carryforwards [Line Items]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest																	29,900,000	47,200,000	55,800,000
Foreign Countries [Member]
Operating Loss Carryforwards [Line Items]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest																	4,800,000	12,800,000	14,900,000
Interest Expense [Member]
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	600,000																600,000
Penalty [Domain]
Operating Loss Carryforwards [Line Items]
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$300,000																$300,000
[1]	The comparability of our income (loss) from operations and net income (loss) per share was affected by the following unusual income or expense items:•During the fourth quarter of 2013, the Company recorded a $12.5 million loss associated with the establishment of a valuation allowance against certain of the Company's foreign deferred tax assets.•During the first quarter of 2013, the Company recorded a $2.9 million loss associated to the write off of the Company's Security Gateway ("SEG") purchased computer software due to management's decision to abandon future development of this technology.•During the first quarter of 2013, the Company recorded a $1.5 million gain associated with the the sale of the Company's OS-9 software assets.
[2]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Employee_Benefit_Plans_Details

Employee Benefit Plans (Details) (USD $)	3 Months Ended	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 04, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	100,000,000	100,000,000	100,000,000
Common Stock, Shares, Issued	29,198,000	29,198,000	28,471,000
Shares issued pursuant to benefit plans, shares		319,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures		445,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Plan Remaining Shares Available for Future Grants		2,112,242
Share Price	$2.34	$2.34
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value		$100,000	$200,000	$100,000
Proceeds from Stock Options Exercised		100,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	1,300,000	1,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		3,465,000	2,555,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	2,841,000	2,841,000	3,465,000	2,555,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures		1,100,000	1,400,000	1,000,000
Employee Stock Purchase Plan, Discount Rate	13.00%
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Percent		30.00%
Defined Contribution Plan, Employer Matching Contribution, Percent		6.00%
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage		33.00%
Defined Contribution Plan, Cost Recognized		800,000	1,000,000	700,000
Deferred Compensation Plan, Vesting Percentage	0.00%	0.00%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Defined Contribution Plan, Employer Matching Contribution, Percent		50.00%
Defined Contribution Plan, Employers Matching Contribution, Annual Vesting Percentage		100.00%
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year 6 months
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition		1 year
LTIP and Overlay Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	0	0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		796
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		172
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		-478
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		-250
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	240	240
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$5
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$3.46
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value		$3.62
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price		$3.65
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$3.55	$3.55
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$300,000	$300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number		335,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period		102,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period		-231,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period		-78,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	128,000	128,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value		$4.73
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value		$3.51
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value		$4.84
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price		$4.63
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$3.78	$3.78
2007 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,700,000	6,700,000
2007 Stock Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures					291,375
LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	2,000,000	2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Plan Maximum Shares		1,999,938
LTIP [Member] | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	500,000	500,000
LTIP [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures					799,975
CCPU Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized	600,000	600,000
Common Stock, Shares, Issued	368,000	368,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,700,000	6,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	587,739	587,739

Employee_Benefit_Plans_ESPP_De

Employee Benefit Plans ESPP (Details) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
ESPP [Abstract]
Shares issued pursuant to the ESPP	242	381	352
Cash received for the purchase of shares pursuant to the ESPP	$514	$767	$1,225
Weighted average purchase price per share	$2.12	$2.01	$3.48

Employee_Benefit_Plans_Stock_O

Employee Benefit Plans Stock Options Rollforward (Details) (USD $)	12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures	$1,100,000	$1,400,000	$1,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	3,465			2,841
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures	445
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	-63
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	-583
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expirations in Period	-423
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,742
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	2,783
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$5.15			$4.95
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$3.32
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$1.79
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$3.38
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	$7.52
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$5.93
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$4.98
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	4 years 4 months 24 days	4 years 7 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	3 years 8 months 27 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years 4 months 13 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	43,000	211,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	42
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	$43,000

Employee_Benefit_Plans_Valuati

Employee Benefit Plans Valuation Disclosures (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options [Member]
Estimated fair value	$0.90	$3.45	$2.10
Expected life (in years)	4 years 4 months 24 days	4 years 6 months	4 years 6 months
Interest rate	1.46%	1.33%	0.65%
Volatility	52.00%	57.00%	71.00%
Dividend yield	0.00%	0.00%	0.00%
Employee Stock [Member]
Estimated fair value	$0.95	$1.79	$2.05
Expected life (in years)	1 year 6 months	1 year 6 months	1 year 6 months
Interest rate	0.13%	0.15%	0.18%
Volatility	53.00%	52.00%	53.00%
Dividend yield	0.00%	0.00%	0.00%

Employee_Benefit_Plans_Stock_B

Employee Benefit Plans Stock Based Compensation (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock-based compensation expense	$4,097	$5,298	$1,391
Cost of Sales [Member]
Stock-based compensation expense	386	550	25
Research and Development Expense [Member]
Stock-based compensation expense	818	1,170	601
Selling, General and Administrative Expenses [Member]
Stock-based compensation expense	$2,893	$3,578	$765

Segment_Information_Operating_

Segment Information Operating Segment (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating Income (Loss)									($25,300)	($34,766)	($39,746)	[1]
Gross Profit	13,950	14,697	12,007	11,148	10,853	14,166	19,464	19,655	51,802	64,138	88,039	[1]
Revenues	48,174	50,805	49,964	43,799	50,138	54,109	65,438	68,178	192,742	237,863	286,096	[1]
Operating Segments [Member] | Software-Systems [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									-6,169	-7,974	3,735
Gross Profit									24,949	25,860	36,326
Revenues									40,281	44,934	52,666
Operating Segments [Member] | Embedded Products and Hardware Services [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									2,457	-25	2,661
Gross Profit									35,449	47,603	61,642
Revenues									152,461	192,929	233,430
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)									-21,588	-26,767	-46,142
Gross Profit									($8,596)	($9,325)	($9,929)
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Segment_Information_Product_an

Segment Information Product and Service and Product Group (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]
Revenues	$48,174	$50,805	$49,964	$43,799	$50,138	$54,109	$65,438	$68,178	$192,742	$237,863	$286,096	[1]
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues									91,094	116,537	136,572
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues									40,281	44,934	52,666
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues									49,660	56,019	49,538
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues									$11,707	$20,373	$47,320
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Segment_Information_Geographic

Segment Information Geographical Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$48,174	$50,805	$49,964	$43,799	$50,138	$54,109	$65,438	$68,178	$192,742	$237,863	$286,096	[1]
Property and equipment, net	9,786				14,854				9,786	14,854
Intangible Assets, Net (Excluding Goodwill)	43,224				56,510				43,224	56,510
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									74,630	100,780	105,858
Property and equipment, net	4,558				7,421				4,558	7,421
Intangible Assets, Net (Excluding Goodwill)	43,224				56,474				43,224	56,474
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									2,079	3,042	3,310
Property and equipment, net	672				942				672	942
Intangible Assets, Net (Excluding Goodwill)	0				36				0	36
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									31,975	29,818	45,419
Property and equipment, net	2,427				3,396				2,427	3,396
Japan [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									14,848	30,724	39,435
Other APAC [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									26,329	20,988	31,695
Property and equipment, net	11				185				11	185
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									118,112	137,083	180,238
Property and equipment, net	5,228				7,433				5,228	7,433
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									73,152	81,530	116,549
Property and equipment, net	2,438				3,581				2,438	3,581
India [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	2,115				2,893				2,115	2,893
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									2,808	11,770	18,580
Netherlands [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									22,608	19,017	19,896
Other EMEA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									17,465	21,724	21,903
Property and equipment, net	3				17				3	17
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues									42,881	52,511	60,379
Property and equipment, net	$2,118				$2,910				$2,118	$2,910
[1]	{F|ahBzfndlYmZpbGluZ3MtaHJkcmoLEgZYTUxEb2MiXlhCUkxEb2NHZW5JbmZvOmUxNDNhNTIzNTkwMTQyYjA4YWUxZjgzODc5NWFkZjE2fFRleHRTZWxlY3Rpb246NzYwNUQ2QzBENzk5MDZDNEQyQ0FGQUQ1M0RGN0IyNDkM}

Segment_Information_Revenue_by

Segment Information Revenue by Major Customer (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Nokia Siemens Networks [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Customer	0.17	0.187	0.225
Philips Healthcare [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Customer	0.149
NEC [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Customer			0.111
Accounts Receivable [Member] | Nokia Siemens Networks [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	18.50%	20.70%
Accounts Receivable [Member] | Philips Healthcare [Member]
Revenue, Major Customer [Line Items]
Concentration Risk, Percentage	13.90%

Segment_Information_Accounts_R

Segment Information Accounts Receivable (Details) (Nokia Siemens Networks [Member], Accounts Receivable [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Nokia Siemens Networks [Member] | Accounts Receivable [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	18.50%	20.70%

Quarterly_Financial_Data_Detai

Quarterly Financial Data (Details) (USD $)	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues	$48,174,000		$50,805,000		$49,964,000		$43,799,000		$50,138,000		$54,109,000		$65,438,000		$68,178,000		$192,742,000	$237,863,000	$286,096,000	[1]
Gross Profit	13,950,000		14,697,000		12,007,000		11,148,000		10,853,000		14,166,000		19,464,000		19,655,000		51,802,000	64,138,000	88,039,000	[1]
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	-4,304,000	[2]	-4,103,000	[2]	-7,429,000	[2]	-9,464,000	[2]	-13,947,000	[2]	-11,996,000	[2]	-3,273,000	[2]	-5,550,000	[2]	-25,089,000	-34,449,000	-40,884,000	[1]
Net income (loss)	-4,467,000	[2]	-4,469,000	[2]	-8,211,000	[2]	-10,434,000	[2]	-26,015,000	[2]	-12,720,000	[2]	-4,112,000	[2]	-6,557,000	[2]	-27,581,000	-49,404,000	-43,474,000	[1]
Earnings Per Share, Basic	($0.12)		($0.12)		($0.23)		($0.35)		($0.89)		($0.44)		($0.14)		($0.23)		($0.79)	($1.72)	($1.60)	[1]
Earnings Per Share, Diluted	($0.12)		($0.12)		($0.23)		($0.35)		($0.89)		($0.44)		($0.14)		($0.23)		($0.79)	($1.72)	($1.60)	[1]
Valuation Allowance, Deferred Tax Asset, Change in Amount																	0	-12,476,000	0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal																	0	1,532,000	0
Impairment of goodwill																	0	0	29,748,000	[1]
Fair Value, Inputs, Level 3 [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings																	39,000	187,000
Fair Value, Inputs, Level 3 [Member] | Re-Measurement of Liability [Member]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings																	-156,000	-1,891,000
Software [Member]
Impairment of Long-Lived Assets Held-for-use																		2,900,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal																		$1,500,000
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[2]	The comparability of our income (loss) from operations and net income (loss) per share was affected by the following unusual income or expense items:•During the fourth quarter of 2013, the Company recorded a $12.5 million loss associated with the establishment of a valuation allowance against certain of the Company's foreign deferred tax assets.•During the first quarter of 2013, the Company recorded a $2.9 million loss associated to the write off of the Company's Security Gateway ("SEG") purchased computer software due to management's decision to abandon future development of this technology.•During the first quarter of 2013, the Company recorded a $1.5 million gain associated with the the sale of the Company's OS-9 software assets.

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	12 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2014	Jun. 30, 2015
Subsequent Event [Line Items]
Additions	$1,637
Minimum | Scenario, Forecast
Subsequent Event [Line Items]
Additions		4,500
Maximum | Scenario, Forecast
Subsequent Event [Line Items]
Additions		$5,500