10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark one)
[x]	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2013

OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number: 0-26844

RADISYS CORPORATION

(Exact name of registrant as specified in its charter)

OREGON	93-0945232
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
5435 N.E. Dawson Creek Drive, Hillsboro, OR	97124
(Address of principal executive offices)	(Zip Code)
(503) 615-1100
(Registrant's telephone number, including area code)
(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  [x]    No  [ ]

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  [x]    No  [ ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	[ ]		Accelerated filer	[x]
Non-accelerated filer	[ ]	(Do not check if a smaller reporting company)	Smaller reporting company	[ ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act)     Yes  [ ]    No  [x]

Number of shares of common stock outstanding as of April 30, 2013: 28,613,467

RADISYS CORPORATION

FORM 10-Q

TABLE OF CONTENTS

	Page
PART I. FINANCIAL INFORMATION
Item 1. Financial Statements (Unaudited)
Condensed Consolidated Statements of Operations – Three Months Ended March 31, 2013 and 2012	3
Condensed Consolidated Statements of Comprehensive Income (Loss) – Three Months Ended March 31, 2013 and 2012	4
Condensed Consolidated Balance Sheets – March 31, 2013 and December 31, 2012	5
Condensed Consolidated Statements of Cash Flows – Three Months Ended March 31, 2013 and 2012	6
Notes to Condensed Consolidated Financial Statements	7
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	20
Item 3. Quantitative and Qualitative Disclosures About Market Risk	30
Item 4. Controls and Procedures	30
PART II. OTHER INFORMATION
Item 1A. Risk Factors	31
Item 6. Exhibits	32
Signatures	33

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PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

RADISYS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except per share amounts, unaudited)

	Three Months Ended
	March 31,
	2013			2012
Revenues	$	68,178		$	75,487
Cost of sales:
Cost of sales	46,306			50,005
Amortization of purchased technology	2,217			2,442
Total cost of sales	48,523			52,447
Gross margin	19,655			23,040
Research and development	11,535			12,546
Selling, general and administrative	11,096			12,000
Intangible asset amortization	1,304			1,304
Restructuring and acquisition-related charges, net	1,270			1,444
Loss from operations	(5,550		)	(4,254		)
Interest expense	(332		)	(421		)
Other income	147			164
Loss before income tax expense	(5,735		)	(4,511		)
Income tax expense	822			304
Net loss	$	(6,557	)	$	(4,815	)
Net loss per share:
Basic	$	(0.23	)	$	(0.18	)
Diluted	$	(0.23	)	$	(0.18	)
Weighted average shares outstanding:
Basic	28,470			26,656
Diluted	28,470			26,656

The accompanying notes are an integral part of these financial statements.

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RADISYS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(In thousands, unaudited)

	Three Months Ended
	March 31,
	2013			2012
Net loss	$	(6,557	)	$	(4,815	)
Other comprehensive income (loss):
Translation adjustments	(194		)	220
Net adjustment for fair value of hedge derivatives	108			173
Other comprehensive income (loss)	(86		)	393
Comprehensive loss	$	(6,643	)	$	(4,422	)

The accompanying notes are an integral part of these financial statements.

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RADISYS CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, unaudited)

	March 31, 2013			December 31, 2012
ASSETS
Current assets:
Cash and cash equivalents	$	31,748		$	33,182
Accounts receivable, net	50,467			51,289
Other receivables	2,498			2,986
Inventories, net	16,461			20,071
Inventory deposit, net	7,573			8,836
Other current assets	3,578			4,248
Deferred tax assets, net	5,395			5,376
Total current assets	117,720			125,988
Property and equipment, net	17,698			17,713
Intangible assets, net	66,763			70,284
Long-term deferred tax assets, net	10,781			11,161
Other assets	3,329			7,248
Total assets	$	216,291		$	232,394
LIABILITIES AND SHAREHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	37,462		$	41,191
Accrued wages and bonuses	5,446			7,168
Deferred income	7,480			9,222
Convertible senior notes	—			16,919
Line of credit	15,000			—
Other accrued liabilities	8,478			9,601
Total current liabilities	73,866			84,101
Long-term liabilities:
Convertible senior notes	18,000			18,000
Other long-term liabilities	4,314			4,851
Total long-term liabilities	22,314			22,851
Total liabilities	96,180			106,952
Commitments and contingencies (Note 8)
Shareholders’ equity:
Common stock — no par value, 100,000 shares authorized; 28,607 and 28,471 shares issued and outstanding at March 31, 2013 and December 31, 2012	305,036			303,724
Accumulated deficit	(186,243		)	(179,686		)
Accumulated other comprehensive income:
Cumulative translation adjustments	1,975			2,169
Unrealized loss on hedge instruments	(657		)	(765		)
Total accumulated other comprehensive income	1,318			1,404
Total shareholders’ equity	120,111			125,442
Total liabilities and shareholders’ equity	$	216,291		$	232,394

The accompanying notes are an integral part of these financial statements.

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RADISYS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands, unaudited)

	Three Months Ended
	March 31,
	2013			2012
Cash flows from operating activities:
Net loss	$	(6,557	)	$	(4,815	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	5,524			5,527
Inventory valuation allowance	397			453
Deferred income taxes	373			75
Non-cash interest expense	28			111
Loss on disposal of property and equipment	69			76
Stock-based compensation expense	1,099			922
Write off of purchased computer software	3,068			—
Net gain from sale of software assets	(1,575		)	—
Other	(402		)	115
Changes in operating assets and liabilities:
Accounts receivable	1,330			1,898
Other receivables	464			963
Inventories	5,360			4,386
Inventory deposit	(979		)	352
Other current assets	641			547
Accounts payable	(4,231		)	(1,496		)
Accrued wages and bonuses	(1,705		)	(3,555		)
Accrued restructuring	11			(1,053		)
Deferred income	(1,775		)	(3,380		)
Other accrued liabilities	(223		)	(1,988		)
Net cash provided by (used in) operating activities	917			(862		)
Cash flows from investing activities:
Capital expenditures	(1,699		)	(3,574		)
Proceeds from sale of software assets	1,180			—
Net cash used in investing activities	(519		)	(3,574		)
Cash flows from financing activities:
Borrowings on line of credit	15,000			—
Repurchase of convertible subordinated notes	(16,919		)	—
Proceeds from issuance of common stock	219			431
Other financing activities	(18		)	(14		)
Net cash provided by (used in) financing activities	(1,718		)	417
Effect of exchange rate changes on cash	(114		)	90
Net decrease in cash and cash equivalents	(1,434		)	(3,929		)
Cash and cash equivalents, beginning of period	33,182			47,770
Cash and cash equivalents, end of period	$	31,748		$	43,841
Supplemental disclosure of cash flow information:
Cash paid during the year for:
Interest	$	705		$	619
Income taxes	$	207		$	181

The accompanying notes are an integral part of these financial statements.

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RADISYS CORPORATION

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Unaudited)

Note 1 — Significant Accounting Policies

Radisys Corporation (the “Company” or “Radisys”) has adhered to the accounting policies set forth in its Annual Report on Form 10-K for the year ended December 31, 2012 in preparing the accompanying interim condensed consolidated financial statements. The preparation of these statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. Actual results could differ from those estimates. Additionally, the accompanying financial data as of March 31, 2013 and for the three months ended March 31, 2013 and 2012 has been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to such rules and regulations. However, the Company believes that the disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012.

The financial information included herein reflects all normal recurring adjustments that are, in the opinion of management, necessary for a fair presentation of the results for interim periods.

Note 2 — Fair Value of Financial Instruments

Assets and Liabilities Measured at Fair Value on a Recurring Basis

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 has 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 is evaluated at the end of each reporting period. As the significant inputs used in determining the fair value are unobservable, this liability is classified within Level 3 of the fair value hierarchy.

The fair value of this contingent consideration is 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 is affected most significantly by changes in the amount and timing of the revenue projections. If the revenue projections increase or decrease,

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the fair value of the contingent consideration will 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 following table summarizes the fair value measurements for the Company's financial instruments (in thousands):

	Fair Value Measurements as of March 31, 2013
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts (A)	$	2,346		$	—	$	2,346		$	—
Deferred compensation liability	(1,111		)	—		(1,111		)	—
Foreign currency forward contracts	(65		)	—		(65		)	—
Contingent consideration liability	(1,801		)	—		—			(1,801		)
Total	$	(631	)	$	—	$	1,170		$	(1,801	)

(A) Net of $1.1 million loan against the cash-surrender value of certain life insurance contracts which afford the Company the right of offset.

	Fair Value Measurements as of December 31, 2012
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts	$	3,398		$	—	$	3,398		$	—
Deferred compensation liability	(1,395		)	—		(1,395		)	—
Foreign currency forward contracts	(297		)	—		(297		)	—
Contingent consideration liability	(2,541		)	—		—			(2,541		)
Total	$	(835	)	$	—	$	1,706		$	(2,541	)

The following table summarizes our Level 3 activity for the Company's contingent consideration liability (in thousands):

	Level 3
Balance at December 31, 2012	$	2,541
Change in estimate	(803		)
Accretion	63
Balance at March 31, 2013	$	1,801

The Company records all changes in estimates and accretion on the contingent consideration liability to restructuring and acquisition-related charges, net in the Condensed Consolidated Statements of Operations. Of the $1.8 million contingent consideration liability at March 31, 2013, $0.7 million is recorded in other accrued liabilities and $1.1 million is recorded in other long-term liabilities on the Condensed Consolidated Balance Sheet at March 31, 2013.

Note 3 — Accounts Receivable and Other Receivables

Accounts receivable consists of sales to the Company's customers which are generally based on standard terms and conditions. Accounts receivable balances consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Accounts receivable, gross	$	50,936		$	52,068
Less: allowance for doubtful accounts	(469		)	(779		)
Accounts receivable, net	$	50,467		$	51,289

As of March 31, 2013 and December 31, 2012, the balance in other receivables was $2.5 million and $3.0 million. Other receivables consisted primarily of non-trade receivables including receivables for value-added taxes and inventory transferred to the Company's contract manufacturing partners on which the Company does not recognize revenue.

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Note 4 — Inventories

Inventories consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Raw materials	$	8,860		$	10,420
Work-in-process	440			605
Finished goods	9,540			11,245
	18,840			22,270
Less: inventory valuation allowance	(2,379		)	(2,199		)
Inventories, net	$	16,461		$	20,071

	March 31, 2013			December 31, 2012
Inventory deposit (A)	$	10,659		$	11,637
Less: inventory deposit valuation allowance	(3,086		)	(2,801		)
Inventory deposit, net	$	7,573		$	8,836

(A) The Company is contractually obligated to reimburse its contract manufacturer for the cost of excess inventory that has been purchased as a result of the Company's forecasted demand when there is no alternative use. The Company's inventory deposit represents a cash deposit paid to its contract manufacturer for inventory in excess of near term demand. The deposit is recorded net of adverse purchase commitment liabilities, and therefore the net balance of the deposit represents inventory the Company believes will be utilized. The deposit will be applied against future adverse purchase commitments owed to the Company's contract manufacturers or reduced based on the usage of inventory. See Note 8 - Commitments and Contingencies for additional information regarding the Company's adverse purchase commitment liability.

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 $1.5 million and $0.7 million at March 31, 2013 and December 31, 2012 .

The Company recorded the following charges associated with the valuation of inventory, inventory deposit and the adverse purchase commitment liability (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Inventory, net	$	397	$	453
Inventory deposit, net	641		299
Adverse purchase commitments	(32)		74

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Note 5 — Accrued Restructuring and Acquisition-Related Charges

The following table summarizes the Company's restructuring and acquisition-related charges as presented in the Condensed Consolidated Statement of Operations for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Net gain from sale of OS-9 software assets	$	(1,575	)	$	—
Write off of purchased computer software	3,068			—
Fair value adjustments to Continuous Computing contingent consideration liability	(740		)	255
Employee-related restructuring expenses	517			613
Integration-related expenses	—			576
Restructuring and acquisition-related charges, net	$	1,270		$	1,444

Restructuring and acquisition-related charges typically consist of costs incurred for employee terminations due to a reduction of personnel resources driven by modifications of business strategy or business emphasis. Employee severance and related costs include severance benefits, notice pay and outplacement services. Restructuring and acquisition related charges may also include expenses incurred related to acquisitions, excess facility costs and asset related charges.

In the three months ended March 31, 2013, the Company recorded the following restructuring and acquisition-related charges:

• $1.6 million net gain from the sale of the Company's OS-9 software assets;

• $3.1 million expense relating 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;

• $0.7 million gain due to the decrease in fair value of Continuous Computing contingent consideration liability. The Company assesses the fair value of the contingent consideration liability on a quarterly basis, adjusting the liability to fair value based on a detailed analysis of all expected contingent consideration eligible revenues; and

• $0.5 million net expense for the severance of nine employees, net of reduction resulting from changes in previously estimated amounts for employee severance and associated payroll costs.

In the three months ended March 31, 2012, the Company recorded the following restructuring and acquisition-related charges:

• $0.3 million expense due to accretion of the Continuous Computing contingent consideration liability;

• $0.6 million net severance related expense including the severance for a named executive officer and other employees relating to the Continuous Computing integration; and

• $0.6 million integration-related costs, including $0.5 million associated with the Company transitioning R&D activities to lower cost geographies.

Accrued restructuring, which is included in other accrued liabilities and other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012, consisted of the following (in thousands):

	Severance, payroll taxes and other employee benefits			Facility reductions			Total
Balance accrued as of December 31, 2012	$	198		$	990		$	1,188
Additions	575			—			575
Reversals	(58		)	—			(58		)
Expenditures	(415		)	(92		)	(507		)
Balance accrued as of March 31, 2013	$	300		$	898		$	1,198

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Of the $1.2 million accrued restructuring at March 31, 2013, $0.6 million represents the long-term portion of accrued lease abandonment charges, with the remaining balance representing the short-term portion of accrued restructuring.

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.

Note 6 — Short-Term Borrowings

Silicon Valley Bank

The Company has a $40.0 million secured revolving line of credit agreement (as amended, the “Agreement”) with Silicon Valley Bank (“SVB”) maturing on September 30, 2014. On October 29, 2012, the Agreement was amended to revise the minimum two quarter rolling EBITDA financial covenant and the calculation of the Availability Amount (as defined in the agreement) under the Agreement such that all permitted borrowings under the Agreement are subject to the borrowing base formula in the Agreement. In addition, the amendment modified the frequency of liquidity testing from quarterly to monthly, all as more particularly described below. The secured revolving credit facility is available for cash borrowings and subject to a borrowing formula based upon eligible accounts receivable. Eligible accounts receivable (as defined in the Agreement) include 80% of domestic and 65% of foreign accounts receivable for our U.S. companies, limited to concentration by certain customers, not greater than 60 days past due and no greater than 120 days from original invoice date. Borrowings under the Agreement bear interest at the prime rate, which was 3.25% as of March 31, 2013, or LIBOR, which was 0.20% as of March 31, 2013, plus 1.25%, with either interest rate determined by the Company's election. The Company is required to make interest payments monthly. The Company was further required to pay a commitment fee equal to $35,000 on the closing date of the Agreement and annually thereafter and to pay quarterly in arrears an unused facility fee in an amount equal to 0.375% per year of the unused amount of the facility.

The Agreement requires the Company to make and maintain certain financial covenants, representations, warranties and other agreements that are customary in credit agreements of this type. The Agreement also requires the Company to maintain the following specific financial covenants:

• minimum monthly liquidity ratio of 1.25 during the term of the Agreement. The liquidity ratio is defined as cash, cash equivalents and short term investments (with cash and cash equivalents held by the Company's foreign subsidiaries not to exceed $10.0 million and excluding any investments held by the Company's foreign subsidiaries) plus eligible accounts receivable (as defined in the Agreement), divided by the sum of obligations owing to SVB under the Agreement;

• minimum two quarter rolling EBITDA (earnings before interest, taxes, depreciation, amortization, stock based compensation, goodwill impairment charges, and non-cash restructuring and integration expenses associated with the acquisition of Continuous Computing) of $3.0 million beginning with the quarter ending June 30, 2013. Prior to June 30, 2013, the minimum two quarter rolling EBITDA requirements increase on a quarterly basis with the quarter ending December 31, 2012 as follows: ($3.5) million, and ($1.0) million; and

• capital expenditures may not exceed $20.0 million during the period January 1, 2011 to December 31, 2012 and $8.0 million in subsequent years.

As of March 31, 2013 and December 31, 2012, the Company had outstanding balances of $15.0 million and $0.0 million issued on its behalf under the Agreement. At March 31, 2013, the Company had $14.4 million of total borrowing availability remaining under the Agreement. As of March 31, 2013, the Company was in compliance with all covenants.

Note 7 — 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 4.50% convertible senior notes due 2015 (the "2015 convertible senior notes"). The 2015 convertible senior notes mature on

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February 15, 2015. Holders of the 2015 convertible senior notes may convert their notes into a number of shares of the Company's common stock determined as set forth in the indenture governing the notes at their option on any day to and including the business day prior to the maturity date. The 2015 convertible senior notes are initially convertible into 117.2333 shares of the Company's common stock per $1,000 principal amount of the notes (which is equivalent to a conversion price of approximately $8.53 per share), subject to adjustment upon the occurrence of certain events. Upon the occurrence of a fundamental change, holders of the 2015 convertible senior notes may require the Company to repurchase some or all of their notes for cash at a price equal to 100% of the principal amount of the notes being repurchased, plus accrued and unpaid interest, if any. In addition, if certain fundamental changes occur, the Company may be required in certain circumstances to increase the conversion rate for any 2015 convertible senior notes converted in connection with such fundamental changes by a specified number of shares of the Company's common stock. The 2015 convertible senior notes are the Company's general unsecured obligations and rank equal in right of payment to all of its existing and future senior indebtedness, and senior in right of payment to the Company's future subordinated debt. The Company's obligations under the 2015 convertible senior notes are not guaranteed by, and are effectively subordinated in right of payment to all existing and future obligations of its subsidiaries and are effectively subordinated in right of payment to its future secured indebtedness to the extent of the assets securing such debt.

As of March 31, 2013 and December 31, 2012, the Company had outstanding 2015 convertible senior notes with a face value of $18.0 million. As of March 31, 2013 and December 31, 2012, the fair value of our 2015 convertible senior notes was $17.7 million, which is based on quoted prices of the Company's publicly traded debt on each balance sheet date.

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:

	Three Months Ended
	March 31,
	2013			2012
Effective interest rate of 2013 convertible senior notes	3.73		%	3.73		%
Effective interest rate of 2015 convertible senior notes	4.50		%	NA
Contractually stated interest costs	$	261		$	309
Amortization of issuance costs	$	28		$	110

Note 8 — Commitments and Contingencies

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 Condensed 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 4 —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 an 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 March 31, 2013.

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

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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 the 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 months. The warranty provision is based on historical experience by product family. The Company engages in extensive 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):

	Three Months Ended
	March 31,
	2013			2012
Warranty liability balance, beginning of the period	$	3,954		$	3,438
Product warranty accruals	1,147			808
Utilization of accrual	(1,212		)	(1,182		)
Warranty liability balance, end of the period	$	3,889		$	3,064

At March 31, 2013 and December 31, 2012, $3.1 million of the warranty liability balance are included in other accrued liabilities and $0.8 million are included in other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets.

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Note 9 — Basic and Diluted Net Income (Loss) per Share

A reconciliation of the numerator and the denominator used to calculate basic and diluted net loss per share is as follows (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2013			2012
Numerator — Basic
Net loss	$	(6,557	)	$	(4,815	)
Numerator — Diluted
Net loss	$	(6,557	)	$	(4,815	)
Interest on convertible notes, net of tax benefit (B)	—			—
Net loss, diluted	$	(6,557	)	$	(4,815	)
Denominator — Basic
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Denominator — Diluted
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Effect of escrow shares (A)	—			—
Effect of convertible notes (B)	—			—
Effect of dilutive restricted stock units (C)	—			—
Effect of dilutive stock options (C)	—			—
Weighted average shares used to calculate net loss per share, diluted	28,470			26,656
Net loss per share
Basic	$	(0.23	)	$	(0.18	)
Diluted (B)	$	(0.23	)	$	(0.18	)

(A) For the three months ended March 31, 2013 and 2012, 0.1 million and 1.3 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

(B) For the three months ended March 31, 2013 and 2012, 2.8 million and 3.5 million as-if converted shares associated with the Company's convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive.

(C) For the three months ended March 31, 2013 and 2012, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	2,892	2,651
Restricted stock units	488	502
Performance based restricted stock units (D)	2,101	835
Total equity award shares excluded	5,481	3,988

(D) For the three months ended March 31, 2013 and 2012, the Company excluded restricted stock units granted under the Long-Term Incentive Plan ("LTIP") and the overlay plan of the 2007 Stock Plan (the "Overlay Plan"), as the performance criteria required for issuance of the awards was not satisfied as of these dates.

Note 10 — Income Taxes

The Company's effective tax rate for the three months ended March 31, 2013 and 2012 differs from the statutory rate primarily due to a full valuation allowance provided against its United States (“U.S.”) net deferred tax assets, Canadian research and experimental development claims, the impact of stock option expense, and taxes on foreign income that differ from the U.S. tax rate.  The Company utilizes the asset and liability method of accounting for income taxes. The Company records deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such

14

determination, 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. Based upon the Company's review of all positive and negative evidence, including its three year U.S. cumulative pre-tax book loss and taxable loss, it concluded that a full valuation allowance should continue to be recorded against its U.S. net deferred tax assets at March 31, 2013. In certain other foreign jurisdictions, where the Company does not have cumulative losses or other negative evidence, the Company had net deferred tax assets of $16.2 million and $16.5 million at March 31, 2013 and December 31, 2012.  In the future, if the Company determines that it is more likely than not that it will realize its U.S. net deferred tax assets, it will reverse the applicable portion of the valuation allowance and recognize an income tax benefit in the period in which such determination is made.

The Company's unrecognized tax benefits and related interest and penalties during the three months ended March 31, 2013 increased by $12,000 primarily due to the additional accrual of interest on uncertain tax positions. The ending balance for the unrecognized tax benefits was approximately $3.0 million at March 31, 2013. The related interest and penalties were $0.4 million and $0.3 million. The uncertain tax positions that are reasonably possible to decrease in the next twelve months are insignificant.

The Company is currently under tax examination in India. The periods covered under examination are the Company's financial years 2005 through 2007 and 2009. The examination is 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 March 31, 2013. As of March 31, 2013, the Company is not under examination by tax authorities in any other jurisdictions.

Note 11 — Stock-based Compensation

The following table summarizes the awards granted under the Radisys Corporation 2007 and LTIP Stock Plans (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	490	44
Restricted stock units	3	14
Performance based restricted stock units	36	—
Total	529	58

Stock-based compensation was recognized and allocated as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Cost of sales	$	130	$	(71	)
Research and development	249		327
Selling, general and administrative	720		666
Total	$	1,099	$	922

Note 12 — Hedging

The Company’s 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 all 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 March 31, 2013 and December 31, 2012, the only hedge instruments executed by the Company are associated with its exposure to fluctuations in the Indian Rupee, which result from obligations such as payroll and rent paid in this currency.

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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. Typically, 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 reclassified out of accumulated other comprehensive income and recorded to the expense line item being hedged. The Company only enters into derivative contracts in order to hedge foreign currency exposure, and these 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 three months ended March 31, 2013 and 2012 and for the year ended December 31, 2012, the Company had no hedge ineffectiveness.

During the three months ended March 31, 2013, the Company entered into 12 new foreign currency forward contracts with total notional contractual values of $2.5 million. During the three months ended March 31, 2012, the Company entered into 21 new foreign currency forward contracts with total notional contractual values of $4.5 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 March 31, 2013 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,966	Other accrued liabilities	$	—	$	(65	)

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, 2012 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,986	Other accrued liabilities	$	—	$	(297	)

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2013 was as follows (in thousands):

Effective Portion			Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income		Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	89	$	—	$	—
Research and development	51		—		—
Selling, general and administrative	38		—		—

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The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2012 was as follows (in thousands):

Effective Portion				Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income			Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	(8	)	$	—	$	—
Research and development	9			—		—
Selling, general and administrative	9			—		—

The following is a summary of the change in the Company's other comprehensive income (loss) associated with the Company's hedging activities (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Beginning balance of unrealized loss on forward exchange contracts	$	(765	)	$	(774	)
Other comprehensive income (loss) before reclassifications	(70		)	163
Amounts reclassified from other comprehensive income	178			10
Other comprehensive income (loss)	108			173
Ending balance of unrealized loss on forward exchange contracts	$	(657	)	$	(601	)

Over the next twelve months, the Company expects to reclassify into earnings a loss of approximately $0.4 million currently recorded as other comprehensive loss, 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.

Note 13 — Segment Information

The Company's Chief Operating Decision Maker, our Chief Executive Officer, reviews our results of operations on a consolidated level. Key resources, decisions, and assessment of performance are also analyzed on a company-wide level and therefore, the Company is one operating segment.

Generally, the Company's customers are not the end-users of its products. The Company ultimately derives revenues from the following four product groups (in thousands):

	Three Months Ended
	March 31,
	2013		2012
ATCA Platforms	$	34,818	$	37,672
Software-Solutions	11,649		12,060
COM Express and Rackmount Server	14,627		13,150
Other Products	7,084		12,605
Total revenues	$	68,178	$	75,487

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Revenues by geographic area are as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012
United States	$	26,050	$	28,761
Other North America	652		800
China	6,745		10,540
Japan	8,560		6,633
Other Asia Pacific	11,217		9,305
Asia Pacific ("APAC")	26,522		26,478
Europe, the Middle East and Africa (“EMEA”)	14,954		19,448
Foreign Countries	42,128		46,726
Total	$	68,178	$	75,487

Long-lived assets by geographic area are as follows (in thousands):

	March 31, 2013		December 31, 2012
Property and equipment, net
United States	$	9,017	$	8,572
Other North America	829		953
China	4,462		4,685
India	3,066		3,110
Other APAC	297		358
APAC	7,825		8,153
EMEA	27		35
Foreign Countries	8,681		9,141
Total property and equipment, net	$	17,698	$	17,713
Intangible assets, net
United States	$	65,553	$	68,903
Other North America	168		211
EMEA	1,042		1,170
Foreign Countries	1,210		1,381
Total intangible assets, net	$	66,763	$	70,284

The following customers accounted for more than 10% of the Company's total revenues:
	Three Months Ended
	March 31,
	2013	2012
Nokia Siemens Networks	17.4%	25.4%
NEC	14.5%	NA
Danaher	NA	14.1%

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The following customers accounted for more than 10% of accounts receivable:
	March 31, 2013	December 31, 2012
NEC	16.5%	NA
Nokia Siemens Networks	16.2%	24.7%
Philips Medical	10.6%	NA

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Introduction

You should read the following discussion and analysis in conjunction with our condensed consolidated financial statements and the related notes thereto included in this Report on Form 10-Q and with Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2012. This report contains forward-looking statements including:

• expectations and goals for revenues, gross margin, research and development ("R&D") expenses, selling, general and administrative ("SG&A") expenses and profits;

• the impact of our restructuring events on future operating results;

• our projected liquidity;

• future operations and market conditions;

• industry trends or conditions and the business environment;

• future levels of inventory and backlog and new product introductions;

• financial performance, revenue growth, management changes or other attributes of Radisys following acquisition or divestiture activities; and

• other statements that are not historical facts.

All statements that relate to future events or to our future performance are forward-looking statements. In some cases, forward-looking statements can be identified by terms such as “may,” “will,” “should,” “expect,” “plans,” “seeks,” “anticipate,” “believe,” “estimate,” “predict,” “potential,” “continue,” “seek to continue,” “consider”, “intends,” or other comparable terminology. These forward-looking statements are made pursuant to safe-harbor provisions of the Private Securities Litigation Reform Act of 1995. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results or our industries’ actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements.

These factors include, among others, the Company's high degree of customer concentration, the use of a single contract manufacturer for a significant portion of the production of our products, key employee attrition, the anticipated amount and timing of revenues from design wins due to the Company's customers' product development schedule, cancellations or delays, market conditions, matters affecting the embedded system industry, including changes in industry standards, changes in customer requirements and new product introductions, currency exchange rate fluctuations, changes in tariff and trade policies and other risks associated with foreign operations, actions by regulatory authorities or other third parties, actions by Continuous Computing's former shareholders, costs and difficulties related to integration of acquired businesses, the Company's ability to successfully manage the transition from 10G to 40G Advanced Telecommunications Computing Architecture ("ATCA") product technologies, performance and customer acceptance of the Trillium line of products and other factors described in "Risk Factors" and elsewhere in our Annual Report on Form 10-K for the year ended December 31, 2012, as updated in the subsequent quarterly reports on Form 10-Q. Although forward-looking statements help provide additional information about us, investors should keep in mind that forward-looking statements are only predictions, at a point in time, and are inherently less reliable than historical information.

We do not guarantee future results, levels of activity, performance or achievements, and we do not assume responsibility for the accuracy and completeness of these statements. The forward-looking statements contained in this report are made and based on information as of the date of this report. We assume no obligation to update any of these statements based on information after the date of this report.

Unless required by context, or as otherwise indicated, “we,” “us,” “our” and similar terms, as well as references to the “Company” and “Radisys” refer to Radisys Corporation and include all of our consolidated subsidiaries.

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Overview

Radisys Corporation is a leader in enabling wireless infrastructure solutions for the telecom, aerospace, and defense markets. Our market-leading ATCA, market-leading Media Resource Function ("MRF"), world-renowned Trillium software, Computer-on-Module ("COM") Express and Network Appliance coupled with an expert professional services organization enable our customers to bring high-value products and services to the telecom market faster and with lower investment and risk. These products are targeted throughout the telecommunication network from Radio Access Network ("RAN") to the Evolved Packet Core to the IP Multimedia Subsystem ("IMS"). Our MRF, an application built on ATCA platforms, provides audio conferencing, Voice over Long-Term Evolution ("VoLTE"), and video conferencing functions into the network IMS. Additionally, when these products are combined with our professional service organization of network experts we can enable our customers to bring to market solutions such as compact packet cores, intelligent gateways (security, femto, and LTE gateways), edge routers and load balancers that are critical elements within the networks at a cost and time to market advantage when compared to internally developed solutions. Our Trillium software is the foundation for a complete turn-key application for small cells in both the 3G (Femototality) and LTE RAN (TotalEnodeB). ATCA and Network Appliance products are the platforms necessary to control and move data in the network core, and enable applications such as Deep Packet Inspection and policy management.

First Quarter 2013 Summary

• Revenues decreased $7.3 million to $68.2 million for the three months ended March 31, 2013 from $75.5 million for the three months ended March 31, 2012. The decline was caused by an expected decrease in revenue from our Other Products product group as these products continue to trend towards end of life as our largest customer transitions to newer next-generation network elements. ATCA revenues decreased due to stronger than usual shipments to one customer during the first quarter 2012. In our Software-Solutions product group, revenue from Trillium declined due to the timing of deployments and delays in small-cell projects which were offset by growth in MRF revenues including the first sale and successful implementation of our MPX-12000 MRF product. We also experienced increased revenue in our COM Express and Rackmount Server product group.

• Our gross margin decreased 1.7 percentage points in the three months ended March 31, 2013 to 28.8% from 30.5% of revenue in the three months ended March 31, 2012. This decrease was the result of a change in our sales mix with proportionally less revenues from our higher margin ATCA and Software-Solutions product groups.

• R&D expense decreased $1.0 million to $11.5 million for the three months ended March 31, 2013 from $12.5 million for the three months ended March 31, 2012. This decrease was driven by the transition of R&D headcount to lower cost geographies.

• SG&A expense decreased $0.9 million to $11.1 million for the three months ended March 31, 2013 from $12.0 million for the three months ended March 31, 2012. The decrease was the result of a reduction in headcount and overhead expenses.

• During the first quarter 2013 we recorded two non-recurring items. We finalized the sales agreement for our OS-9 software assets which were sold for a net gain of $1.6 million. Additionally, we exited the Security Gateway ("SEG") product line and thus recorded an asset write off of $3.1 million. The gain and charge for these events are recorded within restructuring and acquisition related charges, net in the Condensed Consolidated Statements of Operations.

• Cash and cash equivalents decreased $1.5 million to $31.7 million at March 31, 2013 from $33.2 million at December 31, 2012. The decrease in cash and cash equivalents was due to the repurchase of $16.9 million of our 2013 convertible senior notes offset by a $15.0 million draw from our secured revolving line of credit.

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Comparison of the Three Months Ended March 31,2013 and 2012

Results of Operations

The following table sets forth certain operating data as a percentage of revenues for the three months ended March 31, 2013 and 2012:

	Three Months Ended
	March 31,
	2013		2012
Revenues	100.0	%	100.0	%
Cost of sales:
Cost of sales	67.9		66.3
Amortization of purchased technology	3.3		3.2
Total cost of sales	71.2		69.5
Gross margin	28.8		30.5
Research and development	16.9		16.6
Selling, general, and administrative	16.2		15.9
Intangible asset amortization	1.9		1.7
Restructuring and acquisition-related charges, net	1.9		1.9
Loss from operations	(8.1	)	(5.6	)
Interest expense	(0.5	)	(0.6	)
Other income, net	0.2		0.2
Loss before income tax expense	(8.4	)	(6.0	)
Income tax expense	1.2		0.4
Net loss	(9.6	)%	(6.4	)%

Revenues

The following table sets forth our revenues by product group for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013		2012		Change
ATCA Platforms	$	34,818	$	37,672	(7.6	)%
Software-Solutions	11,649		12,060		(3.4	)
COM Express and Rackmount Server	14,627		13,150		11.2
Other Products	7,084		12,605		(43.8	)
Total revenues	$	68,178	$	75,487	(9.7	)%

Revenues in the ATCA product group decreased $2.9 million for the three months ended March 31, 2013 from the comparable period in 2012. This decrease was driven by stronger than usual shipments to a top five customer who deployed network optimization equipment in the first quarter 2012 which was not repeated in the first quarter 2013.

Revenues in the Software-Solutions product group decreased $0.4 million for the three months ended March 31, 2013 from the comparable period in 2012. Our customers have continued to experience delays in small cell deployments containing our Trillium products, which has resulted in decreased revenues over the comparable period in 2012. This decrease was offset by revenue from the first sale and successful implementation of our MPX-12000 ATCA-based MRF product and continued strong deployments to our existing audio-conferencing customers.

Revenues in the COM Express and Rackmount Server product group increased $1.5 million for the three months ended March 31, 2013 from the comparable period in 2012. In 2011, we made the strategic decision to begin re-investing in this

22

product group and expected the related revenues to increase in 2013. This increase in revenue is related to deployments by a specific end-customer that we expect to be relatively short-term in nature.

Revenues in the Other Products product group decreased $5.5 million for the three months ended March 31, 2013 from the comparable period in 2012, as these hardware-centric products trend towards end of life as our largest customers continue to transition to our newer next-generation network elements.

Revenue by Geography

The following tables outline overall revenue dollars and the percentage of revenues, by geographic region, for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013		2012		Change
North America	$	26,702	$	29,561	(9.7	)%
Asia Pacific	26,522		26,478		0.2
Europe, the Middle East and Africa ("EMEA")	14,954		19,448		(23.1	)
Total	$	68,178	$	75,487	(9.7	)%

	Three Months Ended
	March 31,
	2013		2012
North America	39.2	%	39.1	%
Asia Pacific	38.9		35.1
EMEA	21.9		25.8
Total	100.0	%	100.0	%

North America. Revenues from the North America region decreased $2.9 million for the three months ended March 31, 2013 from the comparable period in 2012. This decrease was driven by stronger than usual ATCA shipments to a top five customer who deployed network optimization equipment in the first quarter of 2012 which was not repeated in the first quarter 2013.

Asia Pacific. Revenues from the Asia Pacific region were flat for the three months ended March 31, 2013 from the comparable period in 2012. Revenues from our ATCA and Software-Solutions product groups increased by $4.2 million and $1.0 million in this region due to deployments by our customers to support next generation wireless networks primarily in Japan. This increase was offset by a $5.2 million decrease in Other Products revenue due to the expected decline in revenues as these hardware-centric products trend towards end of life.

EMEA. Revenues from the EMEA region decreased $4.5 million for the three months ended March 31, 2013 from the comparable period in 2012. The decrease is attributable to continued softening demand from telecom providers due to economic uncertainty in Europe.

We currently expect continued fluctuations in the revenue contribution from each geographic region. Additionally, we expect non-U.S. revenues to remain a significant portion of our revenues.

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Gross Margin

The following table summarizes our cost of sales and gross margin for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013			2012			Change
Cost of Sales	$	46,306		$	50,005		(7.4	)%
Amortization of Purchased Technology	2,217			2,442			(9.2	)
Total Cost of Sales	$	48,523		$	52,447		(7.5	)
Gross Margin	28.8		%	30.5		%	(5.6	)%

Gross margin as a percentage of revenues decreased 1.7% percentage points for the three months ended March 31, 2013 from the comparable period in 2012 as the result of proportionally more revenue contributed from lower margin COM Express products and less revenue contributed from our higher margin ATCA and Software-Solutions product groups. Additionally, decreased shipment volumes caused our fixed overhead expenses to represent a larger proportional share of total cost of sales.

Operating Expenses

The following table summarizes our operating expenses for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013		2012		Change
Research and development	$	11,535	$	12,546	(8.1	)%
Selling, general and administrative	11,096		12,000		(7.5	)
Intangible asset amortization	1,304		1,304		—
Restructuring and acquisition-related charges, net	1,270		1,444		(12.0	)
Total	$	25,205	$	27,294	(7.7	)%

Research and Development

R&D expenses decreased $1.0 million for the three months ended March 31, 2013 from the comparable period in 2012 as we completed the transition of a large portion of our R&D employees to lower-cost geographies during 2012. In addition, the decrease is due to lower project-related spend for new product introductions specifically related to our ATCA 40G products, which were substantially released by the end of 2012. R&D headcount decreased to 443 at March 31, 2013 from 475 at March 31, 2012.

Selling, General, and Administrative

SG&A expenses consist primarily of salary, commissions, bonuses and benefits for sales, marketing, executive and administrative personnel, as well as professional services and costs of other general corporate activities. SG&A expenses decreased $0.9 million for the three months ended March 31, 2013 from the comparable period in 2012 due to a $0.8 million decrease in payroll expenses and a $0.2 million decrease in travel-related expenses. SG&A headcount decreased to 196 at March 31, 2013 from 222 at March 31, 2012 as a result of restructuring activities undertaken to right-size our SG&A organizations.

Intangible Asset Amortization

Intangible asset amortization remained flat for the three months ended March 31, 2013 from the comparable period in 2012. We perform reviews for impairment of the purchased intangible assets whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable.

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Restructuring and Acquisition-Related Charges, Net

Restructuring and acquisition-related charges, net includes expenses associated with restructuring activities and other non-recurring gains and losses.We evaluate the adequacy of the accrued restructuring charges on a quarterly basis. As a result, we record reversals to the accrued restructuring in the period in which we determine that expected restructuring and other obligations are less than the amounts accrued.

The decrease in restructuring and acquisition-related charges, net for the three months ended March 31, 2013 from the comparable period in 2012 is due to the fact that restructuring activities related to our acquisition of Continuous Computing which were largely completed during 2012.

Restructuring and acquisition-related charges, net for the three months ended March 31, 2013 include the following:

• $3.1 million - write off of our SEG purchased technology asset due to management's decision to abandon future development of this technology;

• ($1.6) million - net gain from the sale of our OS-9 software assets;

• ($0.7) million - decrease in fair value of Continuous Computing contingent consideration liability. We assess the fair value of the contingent consideration liability on a quarterly basis, adjusting the liability to fair value based on a detailed analysis of all expected contingent consideration eligible revenues. The decrease over prior quarter estimate is the result of the continued delay of small-cell deployments; and

• $0.5 million - severance and benefits provided to restructured employees.

Stock-based Compensation Expense

Included within cost of sales, R&D and SG&A are expenses associated with stock-based compensation. Stock-based compensation expense consists of amortization of stock-based compensation associated with unvested stock options, restricted stock units and the employee stock purchase plan ("ESPP"). We incurred and recognized stock-based compensation expense as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012			Change
Cost of sales	$	130	$	(71	)	283.1	%
Research and development	249		327			(23.9	)
Selling, general and administrative	720		666			8.1
Total	$	1,099	$	922		19.2	%

Stock-based compensation expense for the three months ended March 31, 2013 increased $0.2 million due over the comparable period in 2012 due to recognition of LTIP and Overlay Plan restricted stock unit awards in the three months ended March 31, 2013 and the reversal of $0.5 million of LTIP expense for a named executive officer which was recognized in cost of sales and SG&A in the same period of the previous year.

Non-Operating Expenses

The following table summarizes our non-operating expenses (in thousands):

	Three Months Ended
	March 31,
	2013			2012			Change
Interest expense	$	(332	)	$	(421	)	(21.1	)%
Interest Income	11			4			175.0
Other income, net	136			160			(15.0	)
Total	$	(185	)	$	(257	)	(28.0	)%

25

Interest Expense

Interest expense includes interest incurred on our convertible senior notes and our line of credit. The decrease in interest expense during the three months ended March 31, 2013, compared to the same period in 2012, was due to the repayment of our 2013 convertible senior notes on February 15, 2013.

Other Income, Net

For the three months ended March 31, 2013, other income from the comparable period in 2012 decreased by $24,000 as a result of unfavorable currency movement against the US Dollarand was offset by an increase in the recognition of forward points associated with our hedge contracts for the Indian Rupee.

Income Tax Provision

The following table summarizes our income tax provision (in thousands):

	Three Months Ended
	March 31,
	2013		2012		Change
Income tax expense	$	822	$	304	170.4	%

We recorded tax expense of $0.8 million for the three months ended March 31, 2013. Our effective tax rates for the three months ended March 31, 2013 and 2012 were (14.3%) and (6.7%).  The effective tax rate fluctuation is mainly due to the jurisdictions in which pretax income (loss) is being earned and income tax rate differences among the jurisdictions.   

Liquidity and Capital Resources

The following table summarizes selected financial information as of the dates indicated (in thousands):

	March 31, 2013		December 31, 2012		March 31, 2012
Cash and cash equivalents	$	31,748	$	33,182	$	43,841
Working capital	43,854		41,887		25,858
Accounts receivable, net	50,467		51,289		47,272
Inventories, net	16,461		20,071		22,058
Accounts payable	37,462		41,191		36,081
Line of credit	15,000		—		—
2013 convertible senior notes	—		16,919		45,000
2015 convertible senior notes	18,000		18,000		—

Cash Flows

Cash and cash equivalents decreased by $1.5 million to $31.7 million as of March 31, 2013 from $33.2 million as of December 31, 2012. As of March 31, 2013, the amount of cash held by our foreign subsidiaries was $14.0 million. It is no longer our intent to permanently reinvest funds in certain of our foreign entities and we expect to continue to repatriate cash from these foreign entities on an ongoing basis in future periods. Repatriation of funds from these foreign entities is not expected to result in actual cash tax payments due to the utilization of previously generated operating losses and credits of our U.S. entity.

26

Activities impacting cash and cash equivalents were as follows (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Operating Activities
Net loss	$	(6,557	)	$	(4,815	)
Non-cash adjustments	8,581			7,279
Changes in working capital	(1,107		)	(3,326		)
Cash provided by (used in) operating activities	917			(862		)
Cash used in investing activities	(519		)	(3,574		)
Cash provided by (used in) financing activities	(1,718		)	417
Effects of exchange rate changes	(114		)	90
Net decrease in cash and cash equivalents	$	(1,434	)	$	(3,929	)

Cash provided by operating activities during the three months ended March 31, 2013 was $0.9 million. For the three months ended March 31, 2013 primary impacts to changes in our working capital consisted of the following:

• Net trade accounts receivable decreased $1.3 million as the result of decreased revenues compared to fourth quarter 2012 and the timing of payments received from our customers;

• Inventories decreased $5.4 million due to our continued focus on reducing our buffer stock inventory that was built up in anticipation of our transition to one contract manufacturer;

• Deferred income decreased $1.8 million due to the recognition of previously deferred Software-Solutions revenue as the undelivered elements or acceptance provisions contained in certain arrangements were satisfied;

• Accounts payable decreased by $4.2 million due to the timing of payments to vendors; and

• Accrued wages and bonuses decreased $1.7 million due to payment of the 2012 cash-based incentive compensation plan and timing of payroll-related accruals.

Cash used in investing activities during the three months ended March 31, 2013 of $0.5 million was due to capital expenditures related principally to test fixtures and R&D equipment for the continued development of our MPX-12000 ATCA-based MRF product and 40G ATCA products. These additions were offset by cash received from the sale of our OS-9 software assets of $1.2 million.

Cash used in financing activities during the three months ended March 31, 2013 of $1.7 million relates to cash used for the repayment of $16.9 million of 2013 convertible senior notes, which was offset by $15.0 million of cash received from draws on our line of credit.

As of March 31, 2013 and December 31, 2012, working capital was $43.9 million and $41.9 million. The increase in our working capital from December 31, 2012 is primarily due to the $5.4 million and $4.2 million decreases in inventory and accounts payable.

Line of Credit

Silicon Valley Bank

We have a $40.0 million secured revolving line of credit agreement (as amended, the “Agreement”) with Silicon Valley Bank (“SVB”) maturing on September 30, 2014. On October 29, 2012, the Agreement was amended to revise the minimum two quarter rolling EBITDA financial covenant and the calculation of the Availability Amount (as defined in the Agreement) under the Agreement such that all permitted borrowings under the Agreement are subject to the borrowing base formula in the Agreement. In addition, the amendment modified the frequency of liquidity testing from quarterly to monthly, all as more particularly described below. The secured revolving credit facility is available for cash borrowings and subject to a borrowing formula based upon eligible accounts receivable. Eligible accounts receivable (as defined in the Agreement) include 80% of US and 65% of foreign accounts receivable for our U.S. companies, limited to concentration by certain customers, not greater than 60 days past due and no greater than 120 days from original invoice date. Borrowings under the Agreement bear interest at the prime rate, which was 3.25% as of March 31, 2013, or LIBOR, which was 0.20% as of March 31, 2013, plus 1.25%, with either interest rate determined by our election. We are required to make interest payments monthly. We were further required to pay a

27

commitment fee equal to $35,000 on the closing date of the Agreement and annually thereafter and to pay quarterly in arrears an unused facility fee in an amount equal to 0.375% per year of the unused amount of the facility.

The Agreement requires us to make and maintain certain financial covenants, representations, warranties and other agreements that are customary in credit agreements of this type. The Agreement also requires us to maintain the following specific financial covenants:

• minimum monthly liquidity ratio of 1.25 during the term of the Agreement. The liquidity ratio is defined as cash, cash equivalents and short term investments (with cash and cash equivalents held by our foreign subsidiaries not to exceed $10.0 million and excluding any investments held by our foreign subsidiaries) plus eligible accounts receivable (as defined in the Agreement), divided by the sum of obligations owing to SVB under the Agreement;

• minimum two quarter rolling EBITDA (earnings before interest, taxes, depreciation, amortization, stock based compensation, goodwill impairment charges, and non-cash restructuring and integration expenses associated with the acquisition of Continuous Computing) of $3.0 million beginning with the quarter ending June 30, 2013. Prior to June 30, 2013, the minimum two quarter rolling EBITDA requirements increase on a quarterly basis with the quarter ending December 31, 2012 as follows: ($3.5) million, and ($1.0) million; and

• capital expenditures may not exceed $20.0 million during the period January 1, 2011 to December 31, 2012 and $8.0 million in subsequent years.

As of March 31, 2013 and December 31, 2012, we had drawn a total of $15.0 million and $0 against our line of credit. At March 31, 2013, we had $14.4 million of total borrowing availability remaining under the Agreement. As of March 31, 2013, we were in compliance with all covenants.

2013 Convertible Senior Notes

On February 15, 2013, we 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, we entered into subscription agreements with certain holders of the 2013 convertible senior notes. Pursuant to the subscription agreements, on June 29, 2012 we exchanged $18.0 million aggregate principal amount of the 2013 convertible senior notes for $18.0 million aggregate principal amount of the new 2015 convertible senior notes. The 2015 convertible senior notes mature on February 15, 2015. Holders of the 2015 convertible senior notes may convert their notes into a number of shares of our common stock determined as set forth in the indenture governing the notes at their option on any day to and including the business day prior to the maturity date. The 2015 convertible senior notes are initially convertible into 117.2333 shares of our common stock per $1,000 principal amount of the notes (which is equivalent to a conversion price of approximately $8.53 per share), subject to adjustment upon the occurrence of certain events. Upon the occurrence of a fundamental change, holders of the 2015 convertible senior notes may require us to repurchase some or all of their notes for cash at a price equal to 100% of the principal amount of the notes being repurchased, plus accrued and unpaid interest, if any. In addition, if certain fundamental changes occur, we may be required in certain circumstances to increase the conversion rate for any 2015 convertible senior notes converted in connection with such fundamental changes by a specified number of shares of our common stock. The 2015 convertible senior notes are general unsecured obligations and rank equal in right of payment to all of our existing and future senior indebtedness, and senior in right of payment to our future subordinated debt. Our obligations under the 2015 convertible senior notes are not guaranteed by, and are effectively subordinated in right of payment to all existing and future obligations of its subsidiaries and are effectively subordinated in right of payment to its future secured indebtedness to the extent of the assets securing such debt.

As of March 31, 2013 and December 31, 2012, we had outstanding 2015 convertible senior notes with a face value of $18.0 million. As of March 31, 2013 and December 31, 2012, the fair value of our 2015 convertible senior notes was $17.7 million, which is based on the most recent quoted prices of our publicly traded debt on each balance sheet date.

Contractual Obligations

Our contractual obligations as of December 31, 2012 are summarized in Item 7 - "Management's Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources - Contractual Obligations," of the Company's Annual Report on Form 10-K for the year ended December 31, 2012. For the three months ended March 31, 2013, there have been no material changes in our contractual obligations outside the ordinary course of business, except for the

28

repayment of $16.9 million aggregate principal amount of our 2013 convertible senior notes and the $15.0 million draw against our line of credit. As of March 31, 2013, we have agreements regarding foreign currency forward contracts with total contractual values of $14.0 million that mature through 2014.

In addition to the above, we have approximately $3.0 million associated with unrecognized tax benefits. We are not able to reasonably estimate when we would make any cash payments required to settle these liabilities, but do not believe the ultimate settlement of our obligations will materially affect our liquidity.

Off-Balance Sheet Arrangements

We do not engage in any activity involving special purpose entities or off-balance sheet financing.

Liquidity Outlook

At March 31, 2013, our cash and cash equivalents amounted to$31.7 million. We believe that our current cash and cash equivalents, the cash expected to be generated from operations and the remaining credit available under our line of credit facility will satisfy our short and long-term expected working capital needs, capital expenditures, and other liquidity requirements associated with our existing business operations. We expect our current working capital to be sufficient to satisfy our short-term obligations, including repayment of the borrowing against our line of credit with SVB.

Critical Accounting Policies and Estimates

We reaffirm our critical accounting policies and use of estimates as reported in our Annual Report on Form 10-K for the year ended December 31, 2012. There have been no significant changes during the three months ended March 31, 2013 to the items that we disclosed as our critical accounting policies and estimates in Management's Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2012.

29

Item 3. Quantitative and Qualitative Disclosures about Market Risk

We are exposed to market risk from changes in interest rates, foreign currency exchange rates, and equity trading prices, which could affect our financial position and results of operations.

Foreign Currency Risk. We pay the expenses of our international operations in local currencies, namely, the Canadian Dollar, Euro, Chinese Yuan, Indian Rupee, Japanese Yen, Malaysian Ringgit, and British Pound Sterling. Our international operations are subject to risks typical of an international business, including, but not limited to: differing economic conditions, changes in political climate, differing tax structures, foreign exchange rate volatility and other regulations and restrictions. Accordingly, future results could be materially and adversely affected by changes in these or other factors. We are also exposed to foreign exchange rate fluctuations as the balance sheets and income statements of our foreign subsidiaries are translated into U.S. Dollars during the consolidation process. Because exchange rates vary, these results, when translated, may vary from expectations and adversely affect overall expected profitability.

Based on our policy, we have established a foreign currency exposure management program which uses derivative foreign exchange contracts to address nonfunctional currency exposures. In order to reduce the potentially adverse effects of foreign currency exchange rate fluctuations, we have entered into forward exchange contracts. These hedging transactions limit our exposure to changes in the U.S. Dollar to the Indian Rupee exchange rate, and as of March 31, 2013 the total notional or contractual value of the contracts we held was $14.0 million. These contracts will mature over the next 20 months.

Holding other variables constant, a 10% adverse fluctuation, in relation to our hedge positions, of the U.S. Dollar relative to the Indian Rupee would require an adjustment of $1.4 million and increase our Indian Rupee hedge liability as of March 31, 2013, to $1.5 million. A 10% favorable fluctuation, in relation to our hedge positions, of the U.S. Dollar relative to the Indian Rupee would result in an adjustment of $1.4 million, reversing our Indian Rupee hedge liability and creating a hedge asset as of March 31, 2013, in the amount of $1.3 million. We do not expect a 10% fluctuation to have any material impact on our operating results as the underlying hedged transactions will move in an equal and opposite direction. If there is an unfavorable movement in the Indian Rupee relative to our hedged positions this would be offset by reduced expenses, after conversion to the U.S. Dollar, associated with obligations paid for in the Indian Rupee.

Convertible Notes. The fair value of the 2015 convertible senior notes is sensitive to interest rate changes as well as changes in our stock price. Interest rate changes would result in an increase or decrease in the fair value of the 2015 convertible senior notes due to differences between market interest rates and rates in effect at the inception of the obligation. Fluctuations in our stock price would result in an increase or decrease in the fair value of the 2015 convertible senior notes due to the value of the notes derived from the conversion feature. Unless we elect to repurchase our 2015 convertible senior notes in the open market, changes in the fair value of the 2015 convertible senior notes have no impact on our cash flows or consolidated financial statements. The estimated fair value of the 2015 convertible senior notes was $17.7 million at March 31, 2013 and December 31, 2012.

Item 4. Controls and Procedures

Based on their evaluation as of the end of the period covered by this Quarterly Report on Form 10-Q, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that the Company’s “disclosure controls and procedures” (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) are effective.

During our most recent fiscal quarter ended March 31, 2013, no change occurred in the Company's "internal control over financial reporting" (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934) that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting.

30

PART II. OTHER INFORMATION

Item 1A. Risk Factors

There are many factors that affect our business and the results of our operations, many of which are beyond our control. In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, Item 1A. Risk Factors and Part II, Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations in our Annual Report on Form 10-K for the year ended December 31, 2012, which could materially affect our business, financial condition or future results. The risks described in this report and our Annual Report on Form 10-K for the year ended December 31, 2012 are not the only risks facing our Company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition and/or operating results.

31

Item 6. Exhibits

(a) Exhibits

Exhibit 10.1	Amended and Restated Executive Severance Agreement dated February 1, 2013 between Radisys Corporation and Allen Muhich. Incorporated by reference from Exhibit 10.1 to the Company's Current Report on Form 8-K filed on February 6, 2013 (SEC File No. 000-26844).
Exhibit 10.2	Amended and Restated Executive Change of Control Agreement dated February 1, 2013 between Radisys Corporation and Allen Muhich. Incorporated by reference from Exhibit 10.2 to the Company's Current Report on Form 8-K filed on February 6, 2013 (SEC File No. 000-26844).
Exhibit 31.1*	Certification of the Chief Executive Officer required by Rule 13a-14(a) or Rule 15d-14(a) of the Exchange Act pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 31.2*	Certification of the Chief Financial Officer required by Rule 13a-14(a) or Rule 15d-14(a) of the Exchange Act pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.1*	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.2*	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS**	XBRL Instance Document
101.SCH**	XBRL Taxonomy Extension Schema
101.CAL**	XBRL Taxonomy Extension Calculation Linkbase
101.LAB**	XBRL Taxonomy Extension Label Linkbase
101.PRE**	XBRL Taxonomy Presentation Linkbase
101.DEF**	XBRL Taxonomy Definition Linkbase

*

Filed herewith

**

In accordance with Rule 406T of Regulation S-T, the XBRL related information in Exhibit 101 to this Quarterly Report on Form 10-Q shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that section, and shall not be part of any registration or other document filed under the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

32

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		RADISYS CORPORATION
Dated:	May 2, 2013	By:	/s/ Brian Bronson
			Brian Bronson
			President and Chief Executive Officer
Dated:	May 2, 2013	By:	/s/ Allen Muhich
			Allen Muhich
			Chief Financial Officer and Vice President of Finance (Principal Financial and Accounting Officer)

33

EXHIBIT INDEX

Exhibit 10.1	Amended and Restated Executive Severance Agreement dated February 1, 2013 between Radisys Corporation and Allen Muhich. Incorporated by reference from Exhibit 10.1 to the Company's Current Report on Form 8-K filed on February 6, 2013 (SEC File No. 000-26844).
Exhibit 10.2	Amended and Restated Executive Change of Control Agreement dated February 1, 2013 between Radisys Corporation and Allen Muhich. Incorporated by reference from Exhibit 10.2 to the Company's Current Report on Form 8-K filed on February 6, 2013 (SEC File No. 000-26844).
Exhibit 31.1*	Certification of the Chief Executive Officer required by Rule 13a-14(a) or Rule 15d-14(a) of the Exchange Act pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 31.2*	Certification of the Chief Financial Officer required by Rule 13a-14(a) or Rule 15d-14(a) of the Exchange Act pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.1*	Certification of the Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
Exhibit 32.2*	Certification of the Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS**	XBRL Instance Document
101.SCH**	XBRL Taxonomy Extension Schema
101.CAL**	XBRL Taxonomy Extension Calculation Linkbase
101.LAB**	XBRL Taxonomy Extension Label Linkbase
101.PRE**	XBRL Taxonomy Presentation Linkbase
101.DEF**	XBRL Taxonomy Definition Linkbase

*

Filed herewith

**

In accordance with Rule 406T of Regulation S-T, the XBRL related information in Exhibit 101 to this Quarterly Report on Form 10-Q shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act, or otherwise subject to the liability of that section, and shall not be part of any registration or other document filed under the Securities Act or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

34

EX-31.1

Exhibit 31.1

CERTIFICATIONS

I, Brian Bronson, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Radisys Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 2, 2013

/s/ Brian Bronson

Brian Bronson

Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATIONS

I, Allen Muhich, certify that:

1.    I have reviewed this Quarterly Report on Form 10-Q of Radisys Corporation;

2.    Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.    Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.    The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c) Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d) Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.    The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: May 2, 2013

/s/ Allen Muhich

Allen Muhich

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Radisys Corporation (the “Company”) on Form 10-Q for the fiscal quarter ended March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Brian Bronson, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Brian Bronson

Brian Bronson

Chief Executive Officer

May 2, 2013

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Radisys Corporation (the “Company”) on Form 10-Q for the fiscal quarter ended March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Allen Muhich, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)    The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)    The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Allen Muhich

Allen Muhich

Chief Financial Officer

May 2, 2013

XML

Convertible Debt (Details) (USD $)			3 Months Ended				1 Months Ended	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Convertible Senior Notes [Member]	Mar. 31, 2012 Convertible Senior Notes [Member]	Mar. 31, 2013 Convertible Senior Notes [Member] 2013 Convertible Senior Notes [Member]	Mar. 31, 2012 Convertible Senior Notes [Member] 2013 Convertible Senior Notes [Member]	Jun. 29, 2012 Convertible Senior Notes [Member] 2015 Convertible Senior Notes [Member]	Mar. 31, 2013 Convertible Senior Notes [Member] 2015 Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Convertible senior notes	$ 18,000,000	$ 18,000,000
Debt Instrument, Convertible, Conversion Ratio							117.2333
Debt Instrument, Convertible, Conversion Ratio, Principal Amount							1,000
Debt Instrument, Convertible, Conversion Price							$ 8.53
Debt Instrument, Call Feature, Call Price, Percent of Principal							100.00%
Long-term Debt, Fair Value	17,700,000
Effective interest rate					3.73%	3.73%		4.50%
Contractually stated interest costs			261,000	309,000
Amortization of interest costs			$ 28,000	$ 110,000

XML

Segment Information - Geographical Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 68,178	$ 75,487
Property and equipment, net	17,698		17,713
Total Intangible Assets, Net	66,763		70,284
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	26,050	28,761
Property and equipment, net	9,017		8,572
Total Intangible Assets, Net	65,553		68,903
Other North America
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	652	800
Property and equipment, net	829		953
Total Intangible Assets, Net	168		211
CHINA [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	6,745	10,540
Property and equipment, net	4,462		4,685
JAPAN
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8,560	6,633
INDIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Property and equipment, net	3,066		3,110
Other Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	11,217	9,305
Property and equipment, net	297		358
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	26,522	26,478
Property and equipment, net	7,825		8,153
Europe, the Middle East and Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	14,954	19,448
Property and equipment, net	27		35
Total Intangible Assets, Net	1,042		1,170
Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	42,128	46,726
Property and equipment, net	8,681		9,141
Total Intangible Assets, Net	$ 1,210		$ 1,381

XML

Hedging (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Maximum Length of Time Hedged in Cash Flow Hedge	2 years
Cash Flow Hedge Gain (Loss) Reclassified to Cost of Sales, Net	$ 89,000	$ (8,000)
Cash Flow Hedge Gain (Loss) Reclassified To Research and Development	51,000	9,000
Cash Flow Hedge Gain (Loss) Reclassified To Selling, General and Administrative	38,000	9,000
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net	0	0
Unrealized loss on hedge instruments	(657,000)	(601,000)	(765,000)	(774,000)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	(70,000)	163,000
Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	178,000	10,000
Hedge Loss Recognized in Other Comprehensive Income (Loss)	108,000	173,000
Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Foreign Currency Cash Flow Hedge Derivatives	13,966,000		13,986,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	(400,000)
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	(65,000)		(297,000)
Cash Flow Hedging [Member] | Foreign Exchange Forward [Member]
Derivatives, Fair Value [Line Items]
Derivative, Number of New Instruments During Period	12	21
Derivative, New Instruments During Period, Notional Amount	$ 2,500,000	$ 4,500,000

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Accounts Receivable and Other Receivables (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Accounts Receivable, Gross	$ 50,936	$ 52,068
Less: allowance for doubtful accounts	(469)	(779)
Accounts Receivable, Net	50,467	51,289
Other receivables	$ 2,498	$ 2,986

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Convertible Debt (Tables)

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Schedule of Debt [Table Text Block]

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:

	Three Months Ended
	March 31,
	2013			2012
Effective interest rate of 2013 convertible senior notes	3.73		%	3.73		%
Effective interest rate of 2015 convertible senior notes	4.50		%	NA
Contractually stated interest costs	$	261		$	309
Amortization of issuance costs	$	28		$	110

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Segment Information - Accounts Receivable (Details)	3 Months Ended
	Mar. 31, 2013 Nokia Siemens Networks [Member]	Mar. 31, 2012 Nokia Siemens Networks [Member]	Mar. 31, 2013 Nokia Siemens Networks [Member] Accounts Receivable [Member]	Dec. 31, 2012 Nokia Siemens Networks [Member] Accounts Receivable [Member]	Mar. 31, 2013 NEC [Member]	Mar. 31, 2013 NEC [Member] Accounts Receivable [Member]	Mar. 31, 2013 Philips Healthcare [Member] Accounts Receivable [Member]
Concentration Risk [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	17.40%	25.40%			14.50%
Concentration Risk, Percentage			16.20%	24.70%		16.50%	10.60%

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Basic and Diluted Net Income (Loss) Per Share - Anti-Dilutive Securities (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Contingently Issuable Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	100	1,300
Convertible Debt Securities [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,800	3,500
Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,481	3,988
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	2,892	2,651
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	488	502
Securities Excluded from Computation of Earnings Per Share, Performance Target Not Met, Amount	2,101	835

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Short-Term Borrowings (Details) (USD $)	3 Months Ended
	Mar. 31, 2013
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 40,000,000
Line of Credit Facility, Interest Rate at Period End	3.25%
Line of Credit Facility, Variable Interest Rate, Base Percent	0.20%
Debt Instrument, Basis Spread on Variable Rate	1.25%
Line of Credit Facility, Commitment Fee Amount	35,000
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage	0.375%
Line of Credit Facility, Remaining Borrowing Capacity	14,400,000
United States Accounts Receivable Balance [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 Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable	65.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable past due	60 days
Line of Credit Facility, Borrowing Formula, Eligible Accounts Receivable, Days from Invoice Date	120 days
Line of Credit Facility, Covenant Terms, Liquidity Ratio, Allowable Subsidiary Cash Balance	10,000,000
Line of Credit Facility, Covenant Terms, 2012 Capital Expenditures	20,000,000
Line of Credit Facility, Covenant Terms, 2013 and Beyond Capital Ependitures	$ 8,000,000
Minimum [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Covenant Terms, Liquidity Ratio	1.25

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Segment Information - Product and Service and Product Group (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenue from External Customer [Line Items]
Revenues	$ 68,178	$ 75,487
ATCA Platforms [Member]
Revenue from External Customer [Line Items]
Revenues	34,818	37,672
Software and Solutions [Member]
Revenue from External Customer [Line Items]
Revenues	11,649	12,060
Com Express and Rackmount Server [Member]
Revenue from External Customer [Line Items]
Revenues	14,627	13,150
Other Products [Member]
Revenue from External Customer [Line Items]
Revenues	$ 7,084	$ 12,605

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Accounts Receivable and Other Receivables

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Accounts Receivable and Other Receivables

Accounts Receivable and Other Receivables

Accounts receivable consists of sales to the Company's customers which are generally based on standard terms and conditions. Accounts receivable balances consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Accounts receivable, gross	$	50,936		$	52,068
Less: allowance for doubtful accounts	(469		)	(779		)
Accounts receivable, net	$	50,467		$	51,289

As of March 31, 2013 and December 31, 2012, the balance in other receivables was $2.5 million and $3.0 million. Other receivables consisted primarily of non-trade receivables including receivables for value-added taxes and inventory transferred to the Company's contract manufacturing partners on which the Company does not recognize revenue.

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Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Deferred Tax Assets, Net	$ 16.2	$ 16.5
Unrecognized Tax Benefits, Period Increase (Decrease)	0
Unrecognized Tax Benefits	3.0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0.4
Unrecognized Tax Benefits, Income Tax Penalties Accrued	$ 0.3

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Hedging (Tables)

3 Months Ended

Mar. 31, 2013

Mar. 31, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

 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 March 31, 2013 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,966	Other accrued liabilities	$	—	$	(65	)

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, 2012 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,986	Other accrued liabilities	$	—	$	(297	)

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2013 was as follows (in thousands):

Effective Portion			Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income		Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	89	$	—	$	—
Research and development	51		—		—
Selling, general and administrative	38		—		—

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 March 31, 2013 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,966	Other accrued liabilities	$	—	$	(65	)

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, 2012 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,986	Other accrued liabilities	$	—	$	(297	)

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2013 was as follows (in thousands):

Effective Portion			Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income		Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	89	$	—	$	—
Research and development	51		—		—
Selling, general and administrative	38		—		—

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2012 was as follows (in thousands):

Effective Portion				Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income			Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	(8	)	$	—	$	—
Research and development	9			—		—
Selling, general and administrative	9			—		—

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

The following is a summary of the change in the Company's other comprehensive income (loss) associated with the Company's hedging activities (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Beginning balance of unrealized loss on forward exchange contracts	$	(765	)	$	(774	)
Other comprehensive income (loss) before reclassifications	(70		)	163
Amounts reclassified from other comprehensive income	178			10
Other comprehensive income (loss)	108			173
Ending balance of unrealized loss on forward exchange contracts	$	(657	)	$	(601	)

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Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Equity awards granted during the period,Grants in Period, Gross [Table Text Block]

The following table summarizes the awards granted under the Radisys Corporation 2007 and LTIP Stock Plans (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	490	44
Restricted stock units	3	14
Performance based restricted stock units	36	—
Total	529	58

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

Stock-based compensation was recognized and allocated as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Cost of sales	$	130	$	(71	)
Research and development	249		327
Selling, general and administrative	720		666
Total	$	1,099	$	922

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Stock-based Compensation - Equity Awards (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$ 1,099	$ 922
2007 Stock Plan [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, Gross	490	44
Equity awards granted during the period, total, Grants in Period, Gross	529	58
2007 Stock Plan [Member] | Restricted Stock Units (RSUs) [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, Gross	3	14
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	36	0

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

Generally, the Company's customers are not the end-users of its products. The Company ultimately derives revenues from the following four product groups (in thousands):

	Three Months Ended
	March 31,
	2013		2012
ATCA Platforms	$	34,818	$	37,672
Software-Solutions	11,649		12,060
COM Express and Rackmount Server	14,627		13,150
Other Products	7,084		12,605
Total revenues	$	68,178	$	75,487

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

	Three Months Ended
	March 31,
	2013		2012
United States	$	26,050	$	28,761
Other North America	652		800
China	6,745		10,540
Japan	8,560		6,633
Other Asia Pacific	11,217		9,305
Asia Pacific ("APAC")	26,522		26,478
Europe, the Middle East and Africa (“EMEA”)	14,954		19,448
Foreign Countries	42,128		46,726
Total	$	68,178	$	75,487

Long-lived assets by geographic area are as follows (in thousands):

	March 31, 2013		December 31, 2012
Property and equipment, net
United States	$	9,017	$	8,572
Other North America	829		953
China	4,462		4,685
India	3,066		3,110
Other APAC	297		358
APAC	7,825		8,153
EMEA	27		35
Foreign Countries	8,681		9,141
Total property and equipment, net	$	17,698	$	17,713
Intangible assets, net
United States	$	65,553	$	68,903
Other North America	168		211
EMEA	1,042		1,170
Foreign Countries	1,210		1,381
Total intangible assets, net	$	66,763	$	70,284

	Three Months Ended
	March 31,
	2013		2012
United States	$	26,050	$	28,761
Other North America	652		800
China	6,745		10,540
Japan	8,560		6,633
Other Asia Pacific	11,217		9,305
Asia Pacific ("APAC")	26,522		26,478
Europe, the Middle East and Africa (“EMEA”)	14,954		19,448
Foreign Countries	42,128		46,726
Total	$	68,178	$	75,487

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

The following customers accounted for more than 10% of the Company's total revenues:
	Three Months Ended
	March 31,
	2013	2012
Nokia Siemens Networks	17.4%	25.4%
NEC	14.5%	NA
Danaher	NA	14.1%

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

The following customers accounted for more than 10% of accounts receivable:
	March 31, 2013	December 31, 2012
NEC	16.5%	NA
Nokia Siemens Networks	16.2%	24.7%
Philips Medical	10.6%	NA

XML

Fair Value of Financial Instruments Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash surrender value of life insurance contracts	$ 2,346	$ 3,398
Deferred Compensation Liability, Current	(1,111)	(1,395)
Foreign currency forward contracts	(65)	(297)
Contingent consideration liability	(1,801)	(2,541)
Total	(631)	(835)
Fair Value, Measurements, Recurring [Member] | 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	0
Deferred Compensation Liability, Current	0	0
Foreign currency forward contracts	0	0
Contingent consideration liability	0	0
Total	0	0
Fair Value, Measurements, Recurring [Member] | 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	2,346	3,398
Deferred Compensation Liability, Current	(1,111)	(1,395)
Foreign currency forward contracts	(65)	(297)
Contingent consideration liability	0	0
Total	1,170	1,706
Fair Value, Measurements, Recurring [Member] | 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	0
Deferred Compensation Liability, Current	0	0
Foreign currency forward contracts	0	0
Contingent consideration liability	(1,801)	(2,541)
Total	$ (1,801)	$ (2,541)
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 Date	36 months

XML

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Disclosures

Fair Value of Financial Instruments

Assets and Liabilities Measured at Fair Value on a Recurring Basis

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 has 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 is evaluated at the end of each reporting period. As the significant inputs used in determining the fair value are unobservable, this liability is classified within Level 3 of the fair value hierarchy.

The fair value of this contingent consideration is 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 is affected most significantly by changes in the amount and timing of the revenue projections. If the revenue projections increase or decrease, the fair value of the contingent consideration will 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 following table summarizes the fair value measurements for the Company's financial instruments (in thousands):

	Fair Value Measurements as of March 31, 2013
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts (A)	$	2,346		$	—	$	2,346		$	—
Deferred compensation liability	(1,111		)	—		(1,111		)	—
Foreign currency forward contracts	(65		)	—		(65		)	—
Contingent consideration liability	(1,801		)	—		—			(1,801		)
Total	$	(631	)	$	—	$	1,170		$	(1,801	)

(A) Net of $1.1 million loan against the cash-surrender value of certain life insurance contracts which afford the Company the right of offset.

	Fair Value Measurements as of December 31, 2012
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts	$	3,398		$	—	$	3,398		$	—
Deferred compensation liability	(1,395		)	—		(1,395		)	—
Foreign currency forward contracts	(297		)	—		(297		)	—
Contingent consideration liability	(2,541		)	—		—			(2,541		)
Total	$	(835	)	$	—	$	1,706		$	(2,541	)

The following table summarizes our Level 3 activity for the Company's contingent consideration liability (in thousands):

	Level 3
Balance at December 31, 2012	$	2,541
Change in estimate	(803		)
Accretion	63
Balance at March 31, 2013	$	1,801

The Company records all changes in estimates and accretion on the contingent consideration liability to restructuring and acquisition-related charges, net in the Condensed Consolidated Statements of Operations. Of the $1.8 million contingent consideration liability at March 31, 2013, $0.7 million is recorded in other accrued liabilities and $1.1 million is recorded in other long-term liabilities on the Condensed Consolidated Balance Sheet at March 31, 2013.

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Fair Value of Financial Instruments - Level 3 (Details) (Fair Value, Inputs, Level 3 [Member], USD $) In Thousands, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Change in estimate	Mar. 31, 2013 Accretion Expense [Member]	Mar. 31, 2013 Fair Value, Measurements, Recurring [Member]	Dec. 31, 2012 Fair Value, Measurements, Recurring [Member]	Mar. 31, 2013 Short-Term Portion of Contingent Consideration [Member]	Mar. 31, 2013 Long-Term Portion of Contingent Consideration [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration liability					$ (1,801)	$ (2,541)	$ 700	$ 1,100
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2012	1,801	2,541
Fair value level 3 activity			(803)	63
Balance at March 31, 2013	$ 1,801	$ 2,541

XML

Commitments and Contingencies (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty liability balance, beginning of the period	$ 3,954,000	$ 3,438,000
Product warranty accruals	1,147,000	808,000
Utilization of accrual	(1,212,000)	(1,182,000)
Warranty liability balance, end of the period	3,889,000	3,064,000
Product Warranty Accrual, Current	3,100,000
Product Warranty Accrual, Noncurrent	$ 800,000

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Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Revenues	$ 68,178		$ 75,487
Cost of sales:
Cost of sales	46,306		50,005
Amortization of purchased technology	2,217		2,442
Total cost of sales	48,523		52,447
Gross margin	19,655		23,040
Research and development	11,535		12,546
Selling, general and administrative	11,096		12,000
Intangible asset amortization	1,304		1,304
Restructuring and acquisition-related charges, net	1,270		1,444
Income (loss) from operations	(5,550)		(4,254)
Interest expense	(332)		(421)
Other income (expense), net	147		164
Income (loss) before income tax expense (benefit)	(5,735)		(4,511)
Income tax expense (benefit)	822		304
Net income (loss)	$ (6,557)		$ (4,815)
Net income (loss) per share:
Basic	$ (0.23)		$ (0.18)
Diluted	$ (0.23)	[1],[2]	$ (0.18)	[1],[2]
Weighted average shares outstanding:
Basic	28,470		26,656
Diluted	28,470		26,656

[1] (A)For the three months ended March 31, 2013 and 2012, 0.1 million and 1.3 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

[2] For the three months ended March 31, 2013 and 2012, 2.8 million and 3.5 million as-if converted shares associated with the Company's convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive

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Stock-based Compensation - Stock Based Compensation Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 1,099	$ 922
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	130	(71)
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	249	327
Selling, General and Administrative Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 720	$ 666

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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income (loss)	$ (6,557)	$ (4,815)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	5,524	5,527
Inventory valuation allowance	397	453
Deferred income taxes	373	75
Non-cash interest expense	28	111
Loss on disposal of property and equipment	69	76
Stock-based compensation expense	1,099	922
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down	3,068	0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	(1,575)	0
Other	(402)	115
Changes in operating assets and liabilities
Accounts receivable	1,330	1,898
Other receivables	464	963
Inventories	5,360	4,386
Inventory deposit	(979)	352
Other current assets	641	547
Accounts payable	(4,231)	(1,496)
Accrued wages and bonuses	(1,705)	(3,555)
Accrued restructuring	11	(1,053)
Deferred income	(1,775)	(3,380)
Other accrued liabilities	(223)	(1,988)
Net cash provided by operating activities	917	(862)
Cash flows from investing activities:
Capital expenditures	(1,699)	(3,574)
Purchase of long-term assets	1,180	0
Net cash used in investing activities	(519)	(3,574)
Cash flows from financing activities:
Proceeds from (Repayments of) Lines of Credit	15,000	0
Repayments of Long-term Debt	(16,919)	0
Proceeds from issuance of common stock	219	431
Other financing activities	(18)	(14)
Net cash provided by (used in) financing activities	(1,718)	417
Effect of exchange rate changes on cash	(114)	90
Net increase (decrease) in cash and cash equivalents	(1,434)	(3,929)
Cash and Cash Equivalents, beginning of period	33,182	47,770
Cash and Cash Equivalents, end of period	31,748	43,841
Supplemental disclosure of cash flow information:
Interest	705	619
Income taxes	$ 207	$ 181

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Accrued Restructuring (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ (1,575)	$ 0
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down	3,068	0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(740)	255
Restructuring Charges	517	613
Business Combination, Integration Related Costs	0	576
Restructuring and acquisition-related charges, net	$ 1,270	$ 1,444

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Accounts Receivable and Other Receivables (Tables)

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Accounts receivable balances consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Accounts receivable, gross	$	50,936		$	52,068
Less: allowance for doubtful accounts	(469		)	(779		)
Accounts receivable, net	$	50,467		$	51,289

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Accrued Restructuring - Restructuring Reserve Rollforward (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Business Combination, Integration Related Costs	$ 0	$ 576,000
Restructuring Reserve, Noncurrent	600,000
Balance accrued as of December 31, 2012	1,188,000
Restructuring Charges	575,000
Restructuring Reserve, Accrual Adjustment	(58,000)
Expenditures	(507,000)
Balance accred as of March 31, 2013	1,198,000
Severance, Payroll Taxes and Other Employee Benefits [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2012	198,000
Restructuring Charges	575,000
Restructuring Reserve, Accrual Adjustment	(58,000)
Expenditures	(415,000)
Balance accred as of March 31, 2013	300,000
Lease Abandonment Charges [Member]
Restructuring Cost and Reserve [Line Items]
Balance accrued as of December 31, 2012	990,000
Restructuring Charges	0
Restructuring Reserve, Accrual Adjustment	0
Expenditures	(92,000)
Balance accred as of March 31, 2013	$ 898,000

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Accrued Restructuring (Tables)

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs [Table Text Block]

The following table summarizes the Company's restructuring and acquisition-related charges as presented in the Condensed Consolidated Statement of Operations for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Net gain from sale of OS-9 software assets	$	(1,575	)	$	—
Write off of purchased computer software	3,068			—
Fair value adjustments to Continuous Computing contingent consideration liability	(740		)	255
Employee-related restructuring expenses	517			613
Integration-related expenses	—			576
Restructuring and acquisition-related charges, net	$	1,270		$	1,444

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

Accrued restructuring, which is included in other accrued liabilities and other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012, consisted of the following (in thousands):

	Severance, payroll taxes and other employee benefits			Facility reductions			Total
Balance accrued as of December 31, 2012	$	198		$	990		$	1,188
Additions	575			—			575
Reversals	(58		)	—			(58		)
Expenditures	(415		)	(92		)	(507		)
Balance accrued as of March 31, 2013	$	300		$	898		$	1,198

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Significant Accounting Policies

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Significant Accounting Policies

Significant Accounting Policies

Radisys Corporation (the “Company” or “Radisys”) has adhered to the accounting policies set forth in its Annual Report on Form 10-K for the year ended December 31, 2012 in preparing the accompanying interim condensed consolidated financial statements. The preparation of these statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. Actual results could differ from those estimates. Additionally, the accompanying financial data as of March 31, 2013 and for the three months ended March 31, 2013 and 2012 has been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to such rules and regulations. However, the Company believes that the disclosures are adequate to make the information presented not misleading. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and the notes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 2012.

The financial information included herein reflects all normal recurring adjustments that are, in the opinion of management, necessary for a fair presentation of the results for interim periods.

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Condensed Consolidated Statement of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net income (loss)	$ (6,557)	$ (4,815)
Translation adjustments	(194)	220
Net adjustment for fair value of hedge derivatives (A)	108	173
Other comprehensive income (loss)	(86)	393
Comprehensive income (loss)	$ (6,643)	$ (4,422)

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Stock-based Compensation

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments

Stock-based Compensation

The following table summarizes the awards granted under the Radisys Corporation 2007 and LTIP Stock Plans (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	490	44
Restricted stock units	3	14
Performance based restricted stock units	36	—
Total	529	58

Stock-based compensation was recognized and allocated as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Cost of sales	$	130	$	(71	)
Research and development	249		327
Selling, general and administrative	720		666
Total	$	1,099	$	922

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DEI Document	3 Months Ended
	Mar. 31, 2013	Apr. 30, 2013
DEI [Abstract]
Entity Registrant Name	Radisys Corporation
Entity Central Index Key	0000873044
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		28,613,467

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Hedging

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments and Hedging Activities Disclosure [Text Block]

Hedging

The Company’s 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 all 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 March 31, 2013 and December 31, 2012, the only hedge instruments executed by the Company are associated with its exposure to fluctuations in the Indian Rupee, which result from obligations such as payroll and rent paid in this currency.

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. Typically, 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 reclassified out of accumulated other comprehensive income and recorded to the expense line item being hedged. The Company only enters into derivative contracts in order to hedge foreign currency exposure, and these 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 three months ended March 31, 2013 and 2012 and for the year ended December 31, 2012, the Company had no hedge ineffectiveness.

During the three months ended March 31, 2013, the Company entered into 12 new foreign currency forward contracts with total notional contractual values of $2.5 million. During the three months ended March 31, 2012, the Company entered into 21 new foreign currency forward contracts with total notional contractual values of $4.5 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 March 31, 2013 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,966	Other accrued liabilities	$	—	$	(65	)

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, 2012 is as follows (in thousands):

	Contractual/Notional Amount		Condensed Consolidated Balance Sheet Classification	Estimated Fair Value
Type of Cash Flow Hedge				Asset		(Liability)
Foreign currency forward exchange contracts	$	13,986	Other accrued liabilities	$	—	$	(297	)

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2013 was as follows (in thousands):

Effective Portion			Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income		Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	89	$	—	$	—
Research and development	51		—		—
Selling, general and administrative	38		—		—

The effect of derivative instruments on the consolidated financial statements for the three months ended March 31, 2012 was as follows (in thousands):

Effective Portion				Ineffective Portion
Condensed Consolidated Statements of Operations Classification of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income (Loss)	Hedge Gain (Loss) Reclassified from Accumulated Other Comprehensive Income			Condensed Consolidated Statements of Operations Classification of Gain (Loss) Recognized		Hedge Gain (Loss) Recognized
Cost of sales	$	(8	)	$	—	$	—
Research and development	9			—		—
Selling, general and administrative	9			—		—

The following is a summary of the change in the Company's other comprehensive income (loss) associated with the Company's hedging activities (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Beginning balance of unrealized loss on forward exchange contracts	$	(765	)	$	(774	)
Other comprehensive income (loss) before reclassifications	(70		)	163
Amounts reclassified from other comprehensive income	178			10
Other comprehensive income (loss)	108			173
Ending balance of unrealized loss on forward exchange contracts	$	(657	)	$	(601	)

Over the next twelve months, the Company expects to reclassify into earnings a loss of approximately $0.4 million currently recorded as other comprehensive loss, 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.

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 31,748	$ 33,182
Accounts receivable, net	50,467	51,289
Other receivables	2,498	2,986
Inventories, net	16,461	20,071
Inventory deposit, net	7,573	8,836
Other current assets	3,578	4,248
Deferred tax assets, net	5,395	5,376
Total current assets	117,720	125,988
Property and equipment, net	17,698	17,713
Intangible assets, net	66,763	70,284
Long-term deferred tax assets, net	10,781	11,161
Other assets	3,329	7,248
Total assets	216,291	232,394
Current liabilities:
Accounts payable	37,462	41,191
Accrued wages and bonuses	5,446	7,168
Deferred income	7,480	9,222
Convertible senior notes	0	16,919
Line of Credit Facility, Amount Outstanding	15,000	0
Other accrued liabilities	8,478	9,601
Total current liabilities	73,866	84,101
Long-term liabilities:
Convertible senior notes	18,000	18,000
Other long-term liabilities	4,314	4,851
Total long-term liabilities	22,314	22,851
Total liabilities	96,180	106,952
Shareholders' equity:
Common stock — no par value, 100,000 shares authorized; 28,173 and 27,949 shares issued and outstanding at June 30, 2012 and December 31, 2011	305,036	303,724
Accumulated deficit	(186,243)	(179,686)
Accumulated other comprehensive income:
Cumulative translation adjustments	1,975	2,169
Unrealized loss on hedge instruments	(657)	(765)
Total accumulated other comprehensive income	1,318	1,404
Total shareholders’ equity	120,111	125,442
Total liabilities and shareholders' equity	$ 216,291	$ 232,394

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Short-Term Borrowings

3 Months Ended

Mar. 31, 2013

Short-term Debt [Abstract]

Short-term Debt

Short-Term Borrowings

Silicon Valley Bank

The Company has a $40.0 million secured revolving line of credit agreement (as amended, the “Agreement”) with Silicon Valley Bank (“SVB”) maturing on September 30, 2014. On October 29, 2012, the Agreement was amended to revise the minimum two quarter rolling EBITDA financial covenant and the calculation of the Availability Amount (as defined in the agreement) under the Agreement such that all permitted borrowings under the Agreement are subject to the borrowing base formula in the Agreement. In addition, the amendment modified the frequency of liquidity testing from quarterly to monthly, all as more particularly described below. The secured revolving credit facility is available for cash borrowings and subject to a borrowing formula based upon eligible accounts receivable. Eligible accounts receivable (as defined in the Agreement) include 80% of domestic and 65% of foreign accounts receivable for our U.S. companies, limited to concentration by certain customers, not greater than 60 days past due and no greater than 120 days from original invoice date. Borrowings under the Agreement bear interest at the prime rate, which was 3.25% as of March 31, 2013, or LIBOR, which was 0.20% as of March 31, 2013, plus 1.25%, with either interest rate determined by the Company's election. The Company is required to make interest payments monthly. The Company was further required to pay a commitment fee equal to $35,000 on the closing date of the Agreement and annually thereafter and to pay quarterly in arrears an unused facility fee in an amount equal to 0.375% per year of the unused amount of the facility.

The Agreement requires the Company to make and maintain certain financial covenants, representations, warranties and other agreements that are customary in credit agreements of this type. The Agreement also requires the Company to maintain the following specific financial covenants:

• minimum monthly liquidity ratio of 1.25 during the term of the Agreement. The liquidity ratio is defined as cash, cash equivalents and short term investments (with cash and cash equivalents held by the Company's foreign subsidiaries not to exceed $10.0 million and excluding any investments held by the Company's foreign subsidiaries) plus eligible accounts receivable (as defined in the Agreement), divided by the sum of obligations owing to SVB under the Agreement;

• minimum two quarter rolling EBITDA (earnings before interest, taxes, depreciation, amortization, stock based compensation, goodwill impairment charges, and non-cash restructuring and integration expenses associated with the acquisition of Continuous Computing) of $3.0 million beginning with the quarter ending June 30, 2013. Prior to June 30, 2013, the minimum two quarter rolling EBITDA requirements increase on a quarterly basis with the quarter ending December 31, 2012 as follows: ($3.5) million, and ($1.0) million; and

• capital expenditures may not exceed $20.0 million during the period January 1, 2011 to December 31, 2012 and $8.0 million in subsequent years.

As of March 31, 2013 and December 31, 2012, the Company had outstanding balances of $15.0 million and $0.0 million issued on its behalf under the Agreement. At March 31, 2013, the Company had $14.4 million of total borrowing availability remaining under the Agreement. As of March 31, 2013, the Company was in compliance with all covenants.

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Accrued Restructuring

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Restructuring and Related Activities Disclosure [Text Block]

Accrued Restructuring and Acquisition-Related Charges

The following table summarizes the Company's restructuring and acquisition-related charges as presented in the Condensed Consolidated Statement of Operations for the three months ended March 31, 2013 and 2012 (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Net gain from sale of OS-9 software assets	$	(1,575	)	$	—
Write off of purchased computer software	3,068			—
Fair value adjustments to Continuous Computing contingent consideration liability	(740		)	255
Employee-related restructuring expenses	517			613
Integration-related expenses	—			576
Restructuring and acquisition-related charges, net	$	1,270		$	1,444

Restructuring and acquisition-related charges typically consist of costs incurred for employee terminations due to a reduction of personnel resources driven by modifications of business strategy or business emphasis. Employee severance and related costs include severance benefits, notice pay and outplacement services. Restructuring and acquisition related charges may also include expenses incurred related to acquisitions, excess facility costs and asset related charges.

In the three months ended March 31, 2013, the Company recorded the following restructuring and acquisition-related charges:

• $1.6 million net gain from the sale of the Company's OS-9 software assets;

• $3.1 million expense relating 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;

• $0.7 million gain due to the decrease in fair value of Continuous Computing contingent consideration liability. The Company assesses the fair value of the contingent consideration liability on a quarterly basis, adjusting the liability to fair value based on a detailed analysis of all expected contingent consideration eligible revenues; and

• $0.5 million net expense for the severance of nine employees, net of reduction resulting from changes in previously estimated amounts for employee severance and associated payroll costs.

In the three months ended March 31, 2012, the Company recorded the following restructuring and acquisition-related charges:

• $0.3 million expense due to accretion of the Continuous Computing contingent consideration liability;

• $0.6 million net severance related expense including the severance for a named executive officer and other employees relating to the Continuous Computing integration; and

• $0.6 million integration-related costs, including $0.5 million associated with the Company transitioning R&D activities to lower cost geographies.

Accrued restructuring, which is included in other accrued liabilities and other long-term liabilities in the accompanying Condensed Consolidated Balance Sheets as of March 31, 2013 and December 31, 2012, consisted of the following (in thousands):

	Severance, payroll taxes and other employee benefits			Facility reductions			Total
Balance accrued as of December 31, 2012	$	198		$	990		$	1,188
Additions	575			—			575
Reversals	(58		)	—			(58		)
Expenditures	(415		)	(92		)	(507		)
Balance accrued as of March 31, 2013	$	300		$	898		$	1,198

Of the $1.2 million accrued restructuring at March 31, 2013, $0.6 million represents the long-term portion of accrued lease abandonment charges, with the remaining balance representing the short-term portion of accrued restructuring.

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.

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Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Raw materials	$	8,860		$	10,420
Work-in-process	440			605
Finished goods	9,540			11,245
	18,840			22,270
Less: inventory valuation allowance	(2,379		)	(2,199		)
Inventories, net	$	16,461		$	20,071

Schedule of Inventory Deposit [Table Text Block]

	March 31, 2013			December 31, 2012
Inventory deposit (A)	$	10,659		$	11,637
Less: inventory deposit valuation allowance	(3,086		)	(2,801		)
Inventory deposit, net	$	7,573		$	8,836

Charges Associated with Inventory [Table Text Block]

The Company recorded the following charges associated with the valuation of inventory, inventory deposit and the adverse purchase commitment liability (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Inventory, net	$	397	$	453
Inventory deposit, net	641		299
Adverse purchase commitments	(32)		74

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Segment Information

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Segment Reporting Disclosure

Segment Information

The Company's Chief Operating Decision Maker, our Chief Executive Officer, reviews our results of operations on a consolidated level. Key resources, decisions, and assessment of performance are also analyzed on a company-wide level and therefore, the Company is one operating segment.

Generally, the Company's customers are not the end-users of its products. The Company ultimately derives revenues from the following four product groups (in thousands):

	Three Months Ended
	March 31,
	2013		2012
ATCA Platforms	$	34,818	$	37,672
Software-Solutions	11,649		12,060
COM Express and Rackmount Server	14,627		13,150
Other Products	7,084		12,605
Total revenues	$	68,178	$	75,487

Revenues by geographic area are as follows (in thousands):

	Three Months Ended
	March 31,
	2013		2012
United States	$	26,050	$	28,761
Other North America	652		800
China	6,745		10,540
Japan	8,560		6,633
Other Asia Pacific	11,217		9,305
Asia Pacific ("APAC")	26,522		26,478
Europe, the Middle East and Africa (“EMEA”)	14,954		19,448
Foreign Countries	42,128		46,726
Total	$	68,178	$	75,487

Long-lived assets by geographic area are as follows (in thousands):

	March 31, 2013		December 31, 2012
Property and equipment, net
United States	$	9,017	$	8,572
Other North America	829		953
China	4,462		4,685
India	3,066		3,110
Other APAC	297		358
APAC	7,825		8,153
EMEA	27		35
Foreign Countries	8,681		9,141
Total property and equipment, net	$	17,698	$	17,713
Intangible assets, net
United States	$	65,553	$	68,903
Other North America	168		211
EMEA	1,042		1,170
Foreign Countries	1,210		1,381
Total intangible assets, net	$	66,763	$	70,284

The following customers accounted for more than 10% of the Company's total revenues:
	Three Months Ended
	March 31,
	2013	2012
Nokia Siemens Networks	17.4%	25.4%
NEC	14.5%	NA
Danaher	NA	14.1%

The following customers accounted for more than 10% of accounts receivable:
	March 31, 2013	December 31, 2012
NEC	16.5%	NA
Nokia Siemens Networks	16.2%	24.7%
Philips Medical	10.6%	NA

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Basic and Diluted Net Income (Loss) Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

Basic and Diluted Net Income (Loss) per Share

A reconciliation of the numerator and the denominator used to calculate basic and diluted net loss per share is as follows (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2013			2012
Numerator — Basic
Net loss	$	(6,557	)	$	(4,815	)
Numerator — Diluted
Net loss	$	(6,557	)	$	(4,815	)
Interest on convertible notes, net of tax benefit (B)	—			—
Net loss, diluted	$	(6,557	)	$	(4,815	)
Denominator — Basic
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Denominator — Diluted
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Effect of escrow shares (A)	—			—
Effect of convertible notes (B)	—			—
Effect of dilutive restricted stock units (C)	—			—
Effect of dilutive stock options (C)	—			—
Weighted average shares used to calculate net loss per share, diluted	28,470			26,656
Net loss per share
Basic	$	(0.23	)	$	(0.18	)
Diluted (B)	$	(0.23	)	$	(0.18	)

(A) For the three months ended March 31, 2013 and 2012, 0.1 million and 1.3 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

(B) For the three months ended March 31, 2013 and 2012, 2.8 million and 3.5 million as-if converted shares associated with the Company's convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive.

(C) For the three months ended March 31, 2013 and 2012, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	2,892	2,651
Restricted stock units	488	502
Performance based restricted stock units (D)	2,101	835
Total equity award shares excluded	5,481	3,988

(D) For the three months ended March 31, 2013 and 2012, the Company excluded restricted stock units granted under the Long-Term Incentive Plan ("LTIP") and the overlay plan of the 2007 Stock Plan (the "Overlay Plan"), as the performance criteria required for issuance of the awards was not satisfied as of these dates.

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Convertible Debt

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Long-term 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 4.50% convertible senior notes due 2015 (the "2015 convertible senior notes"). The 2015 convertible senior notes mature on February 15, 2015. Holders of the 2015 convertible senior notes may convert their notes into a number of shares of the Company's common stock determined as set forth in the indenture governing the notes at their option on any day to and including the business day prior to the maturity date. The 2015 convertible senior notes are initially convertible into 117.2333 shares of the Company's common stock per $1,000 principal amount of the notes (which is equivalent to a conversion price of approximately $8.53 per share), subject to adjustment upon the occurrence of certain events. Upon the occurrence of a fundamental change, holders of the 2015 convertible senior notes may require the Company to repurchase some or all of their notes for cash at a price equal to 100% of the principal amount of the notes being repurchased, plus accrued and unpaid interest, if any. In addition, if certain fundamental changes occur, the Company may be required in certain circumstances to increase the conversion rate for any 2015 convertible senior notes converted in connection with such fundamental changes by a specified number of shares of the Company's common stock. The 2015 convertible senior notes are the Company's general unsecured obligations and rank equal in right of payment to all of its existing and future senior indebtedness, and senior in right of payment to the Company's future subordinated debt. The Company's obligations under the 2015 convertible senior notes are not guaranteed by, and are effectively subordinated in right of payment to all existing and future obligations of its subsidiaries and are effectively subordinated in right of payment to its future secured indebtedness to the extent of the assets securing such debt.

As of March 31, 2013 and December 31, 2012, the Company had outstanding 2015 convertible senior notes with a face value of $18.0 million. As of March 31, 2013 and December 31, 2012, the fair value of our 2015 convertible senior notes was $17.7 million, which is based on quoted prices of the Company's publicly traded debt on each balance sheet date.

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:

	Three Months Ended
	March 31,
	2013			2012
Effective interest rate of 2013 convertible senior notes	3.73		%	3.73		%
Effective interest rate of 2015 convertible senior notes	4.50		%	NA
Contractually stated interest costs	$	261		$	309
Amortization of issuance costs	$	28		$	110

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies Disclosure

Commitments and Contingencies

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 Condensed 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 4 —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 an 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 March 31, 2013.

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 the 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 months. The warranty provision is based on historical experience by product family. The Company engages in extensive 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):

	Three Months Ended
	March 31,
	2013			2012
Warranty liability balance, beginning of the period	$	3,954		$	3,438
Product warranty accruals	1,147			808
Utilization of accrual	(1,212		)	(1,182		)
Warranty liability balance, end of the period	$	3,889		$	3,064

At March 31, 2013 and December 31, 2012,

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Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income Tax Disclosure

Income Taxes

The Company's effective tax rate for the three months ended March 31, 2013 and 2012 differs from the statutory rate primarily due to a full valuation allowance provided against its United States (“U.S.”) net deferred tax assets, Canadian research and experimental development claims, the impact of stock option expense, and taxes on foreign income that differ from the U.S. tax rate.  The Company utilizes the asset and liability method of accounting for income taxes. The Company records deferred tax assets to the extent it believes these assets will more likely than not be realized. In making such determination, 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. Based upon the Company's review of all positive and negative evidence, including its three year U.S. cumulative pre-tax book loss and taxable loss, it concluded that a full valuation allowance should continue to be recorded against its U.S. net deferred tax assets at March 31, 2013. In certain other foreign jurisdictions, where the Company does not have cumulative losses or other negative evidence, the Company had net deferred tax assets of $16.2 million and $16.5 million at March 31, 2013 and December 31, 2012.  In the future, if the Company determines that it is more likely than not that it will realize its U.S. net deferred tax assets, it will reverse the applicable portion of the valuation allowance and recognize an income tax benefit in the period in which such determination is made.

The Company's unrecognized tax benefits and related interest and penalties during the three months ended March 31, 2013 increased by $12,000 primarily due to the additional accrual of interest on uncertain tax positions. The ending balance for the unrecognized tax benefits was approximately $3.0 million at March 31, 2013. The related interest and penalties were $0.4 million and $0.3 million. The uncertain tax positions that are reasonably possible to decrease in the next twelve months are insignificant.

The Company is currently under tax examination in India. The periods covered under examination are the Company's financial years 2005 through 2007 and 2009. The examination is 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 March 31, 2013. As of March 31, 2013, the Company is not under examination by tax authorities in any other jurisdictions.

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Inventories (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Dec. 31, 2012
Inventory, Net [Abstract]
Raw materials	$ 8,860,000			$ 10,420,000
Work-in-process	440,000			605,000
Finished goods	9,540,000			11,245,000
Inventory, Gross	18,840,000			22,270,000
Less: inventory valuation allowance	(2,379,000)			(2,199,000)
Inventories, net	16,461,000			20,071,000
Other Inventory, Net [Abstract]
Inventory deposit (A)	10,659,000	[1]		11,637,000	[1]
Less: inventory deposit valuation allowance	(3,086,000)			(2,801,000)
Inventory Deposit, Net	7,573,000			8,836,000
Other Inventory, Materials, Supplies and Merchandise under Consignment, Gross	1,500,000			700,000
Inventory, net	397,000		453,000
Inventory Deposit, net	641,000		299,000
Adverse Purchase Commitments	$ (32,000)		$ 74,000

[1] The Company is contractually obligated to reimburse its contract manufacturer for the cost of excess inventory that has been purchased as a result of the Company's forecasted demand when there is no alternative use. The Company's inventory deposit represents a cash deposit paid to its contract manufacturer for inventory in excess of near term demand. The deposit is recorded net of adverse purchase commitment liabilities, and therefore the net balance of the deposit represents inventory the Company believes will be utilized. The deposit will be applied against future adverse purchase commitments owed to the Company's contract manufacturers or reduced based on the usage of inventory. See Note 8 - Commitments and Contingencies for additional information regarding the Company's adverse purchase commitment liability.

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Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]

The following table summarizes the fair value measurements for the Company's financial instruments (in thousands):

	Fair Value Measurements as of March 31, 2013
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts (A)	$	2,346		$	—	$	2,346		$	—
Deferred compensation liability	(1,111		)	—		(1,111		)	—
Foreign currency forward contracts	(65		)	—		(65		)	—
Contingent consideration liability	(1,801		)	—		—			(1,801		)
Total	$	(631	)	$	—	$	1,170		$	(1,801	)

(A) Net of $1.1 million loan against the cash-surrender value of certain life insurance contracts which afford the Company the right of offset.

	Fair Value Measurements as of December 31, 2012
	Total			Level 1		Level 2			Level 3
Cash surrender value of life insurance contracts	$	3,398		$	—	$	3,398		$	—
Deferred compensation liability	(1,395		)	—		(1,395		)	—
Foreign currency forward contracts	(297		)	—		(297		)	—
Contingent consideration liability	(2,541		)	—		—			(2,541		)
Total	$	(835	)	$	—	$	1,706		$	(2,541	)

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

The following table summarizes our Level 3 activity for the Company's contingent consideration liability (in thousands):

	Level 3
Balance at December 31, 2012	$	2,541
Change in estimate	(803		)
Accretion	63
Balance at March 31, 2013	$	1,801

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Product Warranty Liability [Table Text Block]

The following is a summary of the change in the Company's warranty accrual reserve (in thousands):

	Three Months Ended
	March 31,
	2013			2012
Warranty liability balance, beginning of the period	$	3,954		$	3,438
Product warranty accruals	1,147			808
Utilization of accrual	(1,212		)	(1,182		)
Warranty liability balance, end of the period	$	3,889		$	3,064

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Segment Information - Revenue by Major Customer (Details)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Nokia Siemens Networks [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	17.40%	25.40%
NEC [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage	14.50%
Danaher [Member]
Revenue, Major Customer [Line Items]
Entity-Wide Revenue, Major Customer, Percentage		14.10%

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Basic and Diluted Net Income (Loss) Per Share - Earnings (Loss) Per Share Calculation (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ (6,557)		$ (4,815)
Interest on convertible notes, net of tax benefit	0		0	[1]
Net income (loss), diluted	$ (6,557)		$ (4,815)
Weighted average shares used to calculate net income (loss) per share, basic	28,470		26,656
Effect of escrow shares	0		0
Effect of convertible notes	0	[1]	0	[1]
Weighted average shares used to calculate net income (loss) per share, diluted	28,470		26,656
Basic	$ (0.23)		$ (0.18)
Diluted	$ (0.23)	[1],[2]	$ (0.18)	[1],[2]
Restricted Stock Units (RSUs) [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive equity awards	0	[3],[4]	0	[3],[4]
Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive equity awards	0	[3]	0	[3]

[1] For the three months ended March 31, 2013 and 2012, 2.8 million and 3.5 million as-if converted shares associated with the Company's convertible senior notes were excluded from the calculation as their effect would have been anti-dilutive

[2] (A)For the three months ended March 31, 2013 and 2012, 0.1 million and 1.3 million contingently issuable shares were excluded from the calculation as their effect would have been anti-dilutive.

[3] For the three months ended March 31, 2013 and 2012, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands): Three Months Ended March 31, 2013 2012Stock options2,892 2,651Restricted stock units488 502Performance based restricted stock units (D)2,101 835Total equity award shares excluded5,481 3,988

[4] For the three months ended March 31, 2013 and 2012, the Company excluded restricted stock units granted under the Long-Term Incentive Plan ("LTIP") and the overlay plan of the 2007 Stock Plan (the "Overlay Plan"), as the performance criteria required for issuance of the awards was not satisfied as of these dates.

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Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Balance Sheet Parenthetical [Abstract]
Common Stock, Par Value	$ 0	$ 0
Common Stock, Shares Authorized	100,000	100,000
Common Stock, Shares, Issued	28,607	28,471
Common Stock, Shares, Outstanding	28,607	28,471

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Inventories

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Inventory Disclosure

Inventories

Inventories consisted of the following (in thousands):

	March 31, 2013			December 31, 2012
Raw materials	$	8,860		$	10,420
Work-in-process	440			605
Finished goods	9,540			11,245
	18,840			22,270
Less: inventory valuation allowance	(2,379		)	(2,199		)
Inventories, net	$	16,461		$	20,071

	March 31, 2013			December 31, 2012
Inventory deposit (A)	$	10,659		$	11,637
Less: inventory deposit valuation allowance	(3,086		)	(2,801		)
Inventory deposit, net	$	7,573		$	8,836

(A) The Company is contractually obligated to reimburse its contract manufacturer for the cost of excess inventory that has been purchased as a result of the Company's forecasted demand when there is no alternative use. The Company's inventory deposit represents a cash deposit paid to its contract manufacturer for inventory in excess of near term demand. The deposit is recorded net of adverse purchase commitment liabilities, and therefore the net balance of the deposit represents inventory the Company believes will be utilized. The deposit will be applied against future adverse purchase commitments owed to the Company's contract manufacturers or reduced based on the usage of inventory. See Note 8 - Commitments and Contingencies for additional information regarding the Company's adverse purchase commitment liability.

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 $1.5 million and $0.7 million at March 31, 2013 and December 31, 2012 .

The Company recorded the following charges associated with the valuation of inventory, inventory deposit and the adverse purchase commitment liability (in thousands):

	Three Months Ended
	March 31,
	2013		2012
Inventory, net	$	397	$	453
Inventory deposit, net	641		299
Adverse purchase commitments	(32)		74

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Basic and Diluted Net Income (Loss) Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Calculation, Including Anti-Dilutive Securities [Table Text Block]

(C) For the three months ended March 31, 2013 and 2012, the following equity awards, by type, were excluded from the calculation, as their effect would have been anti-dilutive (in thousands):

	Three Months Ended
	March 31,
	2013	2012
Stock options	2,892	2,651
Restricted stock units	488	502
Performance based restricted stock units (D)	2,101	835
Total equity award shares excluded	5,481	3,988

(D) For the three months ended March 31, 2013 and 2012, the Company excluded restricted stock units granted under the Long-Term Incentive Plan ("LTIP") and the overlay plan of the 2007 Stock Plan (the "Overlay Plan"), as the performance criteria required for issuance of the awards was not satisfied as of these dates.

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

A reconciliation of the numerator and the denominator used to calculate basic and diluted net loss per share is as follows (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2013			2012
Numerator — Basic
Net loss	$	(6,557	)	$	(4,815	)
Numerator — Diluted
Net loss	$	(6,557	)	$	(4,815	)
Interest on convertible notes, net of tax benefit (B)	—			—
Net loss, diluted	$	(6,557	)	$	(4,815	)
Denominator — Basic
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Denominator — Diluted
Weighted average shares used to calculate net loss per share, basic	28,470			26,656
Effect of escrow shares (A)	—			—
Effect of convertible notes (B)	—			—
Effect of dilutive restricted stock units (C)	—			—
Effect of dilutive stock options (C)	—			—
Weighted average shares used to calculate net loss per share, diluted	28,470			26,656
Net loss per share
Basic	$	(0.23	)	$	(0.18	)
Diluted (B)	$	(0.23	)	$	(0.18	)

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Short-Term Borrowings Credit Line disclosure (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Short-term Debt [Abstract]
Line of Credit Facility, EBITDA Requirements	$ 3,000,000
Line of Credit Facility, Amount Outstanding	15,000,000	0
Line of Credit Facility, Maximum Borrowing Capacity	$ 40,000,000

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Significant Accounting Policies Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Use of Estimates, Policy [Policy Text Block]

The preparation of these statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. Actual results could differ from those estimates. Additionally, the accompanying financial data as of March 31, 2013 and for the three months ended March 31, 2013 and 2012 has been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission (“SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with GAAP have been omitted pursuant to such rules and regulations. However, the Company believes that the disclosures are adequate to make the information presented not misleading.