Ixia (XXIA) 10-Q 15 Sep 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	Sep. 08, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Ixia	'
Document Type	'10-Q	'
Current Fiscal Year End Date	'--12-31	'
Entity Common Stock, Shares Outstanding	'	78,015,212
Amendment Flag	'false	'
Entity Central Index Key	'0001120295	'
Entity Current Reporting Status	'No	'
Entity Voluntary Filers	'No	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Well-known Seasoned Issuer	'No	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$36,387	$34,189
Short-term investments in marketable securities	55,265	51,507
Accounts receivable, net of allowances of $437 and $840 as of March 31, 2014 and December 31, 2013, respectively	104,537	109,590
Inventories	43,872	47,136
Prepaid expenses and other current assets	52,636	48,514
Total current assets	292,697	290,936
Property and equipment, net	36,479	35,932
Intangible assets, net	178,732	189,949
Goodwill	339,214	338,836
Other assets	28,729	32,070
Total assets	875,851	887,723
Current liabilities:	'	'
Accounts payable	15,447	19,011
Accrued expenses and other	51,476	53,748
Deferred revenues	95,985	89,217
Total current liabilities	162,908	161,976
Deferred revenues	15,053	15,106
Other liabilities	12,316	11,529
Convertible senior notes	200,000	200,000
Total liabilities	390,277	388,611
Commitments and contingencies (Note 12)	'	'
Shareholders’ equity:	'	'
Common stock, without par value; 200,000 shares authorized at March 31, 2014 and December 31, 2013; 76,981 and 76,849 shares issued and outstanding as of March 31, 2014 and December 31, 2013, respectively	179,431	178,347
Additional paid-in capital	196,657	191,976
Retained earnings	109,694	129,166
Accumulated other comprehensive loss	-208	-377
Total shareholders’ equity	485,574	499,112
Total liabilities and shareholders’ equity	$875,851	$887,723

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Per Share data, unless otherwise specified
Accounts receivable, allowances (in Dollars)	$437	$840
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	76,981	76,849
Common stock, shares outstanding	76,981	76,849
Common stock, without par value (in Dollars per share)	$0	$0

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Revenues:	'		'
Products	$81,165		$95,511
Services	32,568		25,948
Total revenues	113,733		121,459
Costs and operating expenses: (1)	'		'
Cost of revenues - products (2)	25,411	[1]	21,387	[1]
Cost of revenues – services	3,948		3,025
Research and development	30,035		29,712
Sales and marketing	38,839		35,041
General and administrative	17,882		12,058
Amortization of intangible assets	12,635		10,138
Acquisition and other related	1,932		1,272
Restructuring	3,564		58
Total costs and operating expenses	134,246		112,691
(Loss) income from operations	-20,513		8,768
Interest income and other, net	337		207
Interest expense	-1,943		-1,943
(Loss) income before income taxes	-22,119		7,032
Income tax benefit	-2,647		-788
Net (loss) income	($19,472)		$7,820
(Loss) earnings per share:	'		'
Basic (in Dollars per share)	($0.25)		$0.10
Diluted (in Dollars per share)	($0.25)		$0.10
Weighted average number of common and common equivalent shares outstanding:	'		'
Basic (in Shares)	76,951		74,718
Diluted (in Shares)	76,951		76,919
[1]	Cost of revenues - products excludes amortization of intangible assets related to product lines and purchased technologies of $8.1 million and $6.5 million for the three months ended March 31, 2014 and 2013, respectively, which is included in Amortization of intangible assets

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations (Unaudited) (Parentheticals) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cost of revenues - excluded amortization of intangible assets	$8,100,000	$6,500,000
Cost of Revenues - Products [Member]	'	'
Stock-based compensation	48,000	153,000
Cost of Revenues - Services [Member]	'	'
Stock-based compensation	18,000	58,000
Research and Development [Member]	'	'
Stock-based compensation	1,879,000	2,448,000
Selling and Marketing [Member]	'	'
Stock-based compensation	1,928,000	2,015,000
General and Administrative [Member]	'	'
Stock-based compensation	$945,000	$2,205,000

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
Net (loss) income	($19,472)		$7,820
Unrealized gain (loss) on investments, net of tax	34		144
Foreign currency translation adjustment	135	[1]	-323
Other comprehensive (loss) income	169		-179
Comprehensive (loss) income	($19,303)		$7,641
[1]	All amounts are net-of-tax. Amounts in parentheses indicate reductions.

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net (loss) income	($19,472)	$7,820
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation	3,963	3,794
Amortization of intangible assets	12,635	10,138
Realized gain on available-for-sale securities	-18	'
Stock-based compensation	4,818	6,880
Deferred income taxes	-405	-1,813
Tax benefit from stock option transactions	'	500
Excess tax benefits from stock-based compensation	'	-555
Amortization of deferred issuace costs	300	300
Changes in operating assets and liabilities, net of effect of acquisitions:	'	'
Accounts receivable, net	5,053	3,670
Inventories	797	915
Prepaid expenses and other current assets	-4,298	-3,954
Other assets	3,079	1,739
Accounts payable	-3,936	331
Accrued expenses and other	-2,443	-8,324
Deferred revenues	6,675	2,414
Other liabilities	814	3,031
Net cash provided by operating activities	7,562	26,586
Cash flows from investing activities:	'	'
Purchases of property and equipment	-1,718	-4,559
Purchases of available-for-sale securities	-22,172	-40,216
Proceeds from available-for-sale securities	18,466	27,501
Purchases of other intangible assets	-129	-234
Payments in connection with acquisitions, net of cash acquired	-895	401
Net cash used in investing activities	-6,448	-17,107
Cash flows from financing activities:	'	'
Proceeds from exercise of stock options	1,084	7,795
Excess tax benefits from stock-based compensation	'	555
Net cash provided by financing activities	1,084	8,350
Net increase in cash and cash equivalents	2,198	17,829
Cash and cash equivalents at beginning of period	34,189	47,508
Cash and cash equivalents at end of period	36,387	65,337
Supplemental disclosure of non-cash investing activities:	'	'
Purchased and unpaid property and equipment	1,097	'
Transfers of inventory to property and equipment	$2,593	'

Note_1_Business

Note 1 - Business	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Nature of Operations [Text Block]	'
	1.    Business
	Ixia was incorporated on May 27, 1997 as a California corporation. We are a leading provider of converged Internet Protocol (IP) network test and network visibility solutions. Equipment manufacturers, service providers, enterprises, and government agencies use our solutions to design, verify, and monitor a broad range of Ethernet, Wi-Fi, 3G and 4G/LTE equipment and networks. Our product solutions consist of our hardware platforms, such as our chassis, interface cards and appliances, software application tools, and services, including our warranty and maintenance offerings and professional services. We operated within one business segment during the periods presented in the accompanying condensed consolidated financial statements.

Note_2_Basis_of_Presentation_a

Note 2 - Basis of Presentation and Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Basis of Presentation and Significant Accounting Policies [Text Block]	'
	2.   Basis of Presentation and Recent Accounting Pronouncements
	Basis of Presentation
	The accompanying condensed consolidated financial statements as of March 31, 2014 and for the three months ended March 31, 2014 and 2013, are unaudited and reflect all adjustments (consisting only of normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of our financial position, operating results, and cash flows for the interim periods presented. Certain retrospective adjustments were made to the prior period consolidated balance sheet that was reported in our Annual Report on Form 10-K for the year ended December 31, 2013, as filed with the SEC on June 23, 2014 (the “2013 Form 10-K”). These retrospective adjustments were measurement period purchase accounting adjustments related to our purchase of Net Optics. See Note 3 for additional information. The results of operations for the three months ended March 31, 2014 presented are not necessarily indicative of results to be expected for the full year ending December 31, 2014 or any other future period.
	These condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet as of December 31, 2013 has been derived from our audited consolidated financial statements included in our 2013 Form 10-K (before the retrospective measurement period purchase accounting adjustments described in Note 3), but does not include all disclosures required by GAAP. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our 2013 Form 10-K.
	Recent Accounting Pronouncements
	In June 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could Be Achieved after the Requisite Service Period, which provides new guidance regarding share-based compensation. The new guidance clarified that share-based compensation performance targets that could be achieved after the requisite service period should be treated as a performance condition that affects vesting, rather than a condition that affects the grant-date fair value of the award. The standard will be effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. Early adoption is permitted. We have not evaluated the impact of the adoption of this accounting standard update on our consolidated financial statements.
	During May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides new guidance on the recognition of revenue and states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard will be effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is not permitted. We have not evaluated the impact of the adoption of this accounting standard update on our consolidated financial statements.
	In July 2013, the FASB issued changes to the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. These changes require an entity to present an unrecognized tax benefit as a liability in the financial statements if (i) a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position, or (ii) the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset to settle any additional income taxes that would result from the disallowance of a tax position. Otherwise, an unrecognized tax benefit is required to be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. Previously, there was diversity in practice as no explicit guidance existed. The effective date for this disclosure guidance is for fiscal years beginning after December 15, 2013. The adoption of this accounting standard update did not have a significant impact on our consolidated financial statements.

Note_3_Acquisitions

Note 3 - Acquisitions	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Business Combination Disclosure [Text Block]	'
	3.     Acquisitions
	Net Optics, Inc.
	On December 5, 2013, we completed our acquisition of all of the outstanding shares of common stock and all other equity interests of Net Optics, Inc. (“Net Optics”). Net Optics is a leading provider of total application and network visibility solutions. With this acquisition, we have expanded our product portfolio, strengthened our service provider and enterprise customer base, and broadened our sales channel and partner programs. In addition, we expect to realize certain operational synergies and leverage Net Optics’ existing sales channels, partner relationships and assembled workforce, including its experienced product development team in Santa Clara, California and its global sales force. These factors, among others, contributed to a purchase price in excess of the estimated fair value of Net Optics’ net identifiable assets acquired (see summary of net assets below), and, as a result, we have recorded goodwill in connection with this transaction.
	The aggregate purchase price totals $187.7 million, and reflects certain post-closing adjustments, related to the final determination of the Net Optics’ closing working capital under the purchase agreement. However, the aggregate purchase price is still subject to a post-closing adjustment based on the final amount of the tax reimbursements to the sellers that will be determined upon the filing of certain pre-acquisition tax returns. The acquisition was funded from our existing cash and sale of investments.
	Acquisition and other related costs, including integration activities, approximated $1.8 million for the three months ended March 31, 2014. These acquisition and other related costs have been expensed as incurred and have been included within the Acquisition and other related line item on our condensed consolidated statements of operations included in this Quarterly Report on Form 10-Q (this “Form 10-Q”).
	During the first quarter of 2014, we reduced our aggregate purchase price for Net Optics from $193.8 million to $187.7 million due to a measurement period adjustment to finalize certain post-closing adjustments, including the net working capital calculation. The finalization of the net working capital calculation resulted in a decrease to the aggregate purchase price of $6.1 million and a corresponding reduction to goodwill. This adjustment was applied retrospectively to the acquisition date (i.e., December 5, 2013). Additionally, during the first quarter of 2014, a measurement period adjustment was recorded to finalize the previous purchase accounting estimates resulting from the update to the tax basis of certain intangible assets. This resulted in an increase to deferred tax assets of $26.9 million and a corresponding decrease to goodwill, which were retrospectively adjusted to the acquisition date (i.e., December 5, 2013). These measurement period adjustments are reflected in the table below.
	The following table summarizes the preliminary allocation of the purchase price to the estimated fair values of the assets acquired and liabilities assumed at the date of acquisition (in thousands):
	Cash and cash equivalents	$	1,967
	Accounts receivable		9,253
	Inventories		6,543
	Prepaid and other assets		1,742
	Fixed assets		2,976
	Deferred tax asset		26,915
	Identifiable intangible assets		72,858
	Goodwill		79,069
	Total assets acquired		201,323
	Accounts payable, accrued expenses and other liabilities		(8,441	)
	Deferred revenues		(5,170	)
	Net assets acquired	$	187,712
	The identifiable intangible assets of $72.9 million consist of $50.0 million of acquired technology, $15.8 million of customer relationships and related service agreements, $3.7 million related to non-compete agreements, $3.0 million for the trade name, and $0.4 million of other identifiable intangible assets. The fair values of the identifiable intangible assets have been estimated using the income approach, which includes the discounted cash flow and relief-from-royalty methods. These intangible assets will be amortized using a straight-line method over their expected useful lives ranging from four months to seven years. The goodwill recorded in connection with this transaction is tax deductible for U.S. income tax purposes.
	Pro Forma and Post Acquisition Results (Unaudited)
	The following table summarizes the unaudited pro forma total revenues and net income of the combined entities, including Ixia, had the acquisition of Net Optics occurred on January 1, 2012 (in thousands):
		Three Months Ended
		31-Mar-13
	Total revenues	$	133,537
	Net income		5,389
	The pro forma combined results in the table above have been prepared for comparative purposes only and include acquisition-related adjustments for, among others items, reductions in revenues related to the estimated fair value adjustment to deferred revenues, certain acquisition related costs, amortization of identifiable intangible assets, and the related income tax effects of these adjustments.
	The pro forma combined results, as well as those of Net Optics included in our results subsequent to the acquisition date, do not purport to be indicative of the results of operations which would have resulted had the acquisition been effective at the beginning of the period noted above, or of the future results of operations of the combined entity.

Note_4_Restructuring

Note 4 - Restructuring	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring and Related Activities Disclosure [Text Block]	'
	4.    Restructuring
	During the third quarter of 2012, our management approved, committed to and initiated a plan to restructure our operations following our August 24, 2012 acquisition of BreakingPoint Systems, Inc. (“BreakingPoint Restructuring”). The BreakingPoint Restructuring included a net reduction in force of approximately 29 positions (primarily impacting our research and development team in Melbourne, Australia). The BreakingPoint Restructuring was substantially completed during the fourth quarter of 2012. As of March 31, 2014, the balance remaining in the Accrued expenses and other line item in our condensed consolidated balance sheets was $397,000. The remaining accrual relates primarily to lease termination costs which are expected to be paid by the end of the second quarter of 2015.
	During the fourth quarter of 2013, our management approved, committed to and initiated a plan to restructure our Test operations (“Test Restructuring”). The Test Restructuring included a net reduction in force of approximately 120 positions (primarily impacting our research and development team in Bangalore, India), which represented approximately 6.5% of our worldwide work force. As of March 31, 2014, the balance remaining in the Accrued expenses and other line item in our condensed consolidated balance sheets was $77,000, which primarily relates to severance and other related costs. The Test Restructuring was substantially completed during the fourth quarter of 2013.
	During the first quarter of 2014, our management approved, committed to and initiated a plan to restructure our operations following our December 5, 2013 acquisition of Net Optics (“Net Optics Restructuring”). The Net Optics Restructuring included a net reduction in force of approximately 45 positions (primarily impacting our research and development team in Israel and Santa Clara, California), which represented approximately 2.3% of our worldwide work force. For the three months ended March 31, 2014, we recognized restructuring costs of $2.3 million related to one-time expenses for employee termination benefits, $1.1 million related to costs required to terminate our lease in Israel and approximately $149,000 for other related costs. These restructuring costs were recorded to the Restructuring line item in our condensed consolidated statements of operations included in this Form 10-Q. As of March 31, 2014, the balance remaining in the Accrued expenses and other line item in our condensed consolidated balance sheets was $1.4 million, which primarily relates to severance and other employee related costs and was paid by the end of the third quarter of 2014. The Net Optics Restructuring will be substantially completed during the second quarter of 2014.
	Activities related to our restructuring plans are as follows (in thousands):
					BreakingPoint			Test			Net Optics
		Total			Restructuring			Restructuring			Restructuring
	Accrual at December 31, 2012	$	1,026		$	1,026		$	-		$	-
	Charges		1,833			51			1,782			-
	Payments		(1,161	)		(474	)		(687	)		-
	Non-cash items		(191	)		(191	)		-			-
	Accrual at December 31, 2013		1,507			412			1,095			-
	Charges		3,564			-			90			3,474
	Payments		(3,261	)		(39	)		(1,108	)		(2,114	)
	Non-cash items		24			24			-			-
	Accrual at March 31, 2014	$	1,834		$	397		$	77		$	1,360

Note_5_Long_Term_Debt

Note 5 - Long Term Debt	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Long-term Debt [Text Block]	'
	5.     Long Term Debt
	Convertible Senior Notes
	On December 7, 2010, we issued $200 million in aggregate principal amount of 3.00% Convertible Senior Notes due December 15, 2015 unless earlier repurchased or converted (the “Notes”). The unsecured Notes were offered and sold only to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the “Securities Act”). The Notes are governed by the terms of an indenture (the “Indenture”) dated December 7, 2010, which was filed with the SEC on December 8, 2010.
	The Notes bear interest at a rate of 3.00% per year, payable semiannually in arrears on June 15 and December 15 of each year, which payments began on June 15, 2011. We may in certain instances be required to pay additional interest if the Notes are not freely tradable by the holders thereof (other than our affiliates) beginning six months after the date of issuance and in connection with events of default, including events of default relating to our failure to comply with our reporting obligations to the trustee under the Indenture and to the SEC. After a default under the Indenture, if the trustee or the holders of at least 25% in aggregate principal amount of the Notes give us notice of, and direct us to cure, the default and the default is not cured within 60 days thereafter, then unless a waiver is obtained from the holders of more than 50% in aggregate principal amount of the Notes, an event of default will occur under the Indenture. Upon any such event of default, we may elect that for the first 180 days (or such lesser amount of time during which the event of default continues), the sole remedy be the payment of additional interest at an annual rate equal to 0.50%. In the event that such additional interest becomes payable because of our failure to timely file certain reports with the SEC and the trustee, the filing of such reports will cure the event of default and the interest rate will be reduced (so long as no other events of default then exist). If we elect to pay such additional interest and the event of default is not cured within the 180-day period, or if we do not make such an election to pay additional interest when the event of default first occurs, the trustee or the holders of at least 25% in aggregate principal amount of the Notes may declare the Notes to be due and payable immediately.
	Amortization recorded to interest expense pertaining to deferred issuance costs for the three months ended March 31, 2014 and 2013 was $0.3 million and $0.3 million, respectively.
	The Notes are convertible at any time prior to the close of business on the third business day immediately preceding the maturity date at the holder’s option, into shares of our common stock at an initial conversion rate of 51.4536 shares per $1,000 principal amount of Notes, which represents an initial conversion price of approximately $19.43 per share. The conversion rate is subject to adjustment for certain events that occur prior to maturity, such as a change in control transaction as defined in the Indenture.
	We may not redeem the Notes prior to the maturity date. If a fundamental change (such as a change in control event or if our Common Stock ceases to be listed or quoted on any of the New York Stock Exchange, the Nasdaq Global Select Market or the Nasdaq Global Market or any of their respective successors) occurs prior to the maturity date, holders may require us to repurchase for cash all or part of their Notes at a repurchase price equal to 100% of the principal amount of the Notes to be repurchased, plus accrued and unpaid interest to, but excluding, the fundamental change repurchase date.
	The Indenture provides for customary events of default (subject in certain cases to grace and cure periods) including, without limitation, (i) the failure to pay amounts due under the Notes, (ii) the failure to deliver the shares of our Common Stock due upon conversion of any Note, (iii) our failure to comply with other agreements contained in the Indenture or in the Notes, (iv) payment defaults on, or acceleration of, other indebtedness, (v) the failure to pay certain judgments, and (vi) certain events of bankruptcy, insolvency or reorganization with respect to the Company. An event of default under the Indenture (other than an event of default related to certain events of bankruptcy, insolvency or reorganization) will allow either the trustee under the Indenture or the holders of at least 25% in aggregate principal amount of the then outstanding Notes to cause the acceleration of the Notes. An event of default related to certain events of bankruptcy, insolvency or reorganization with respect to the Company will automatically cause the acceleration of the Notes, subject to the Company’s right, as described above, to elect to pay additional interest as a sole remedy for a period of up to 180 days.
	On July 16, 2014, the trustee provided us with notice that we were in default under the Indenture because we had not timely filed this Form 10-Q with the trustee. In accordance with the terms of the Indenture, we had 60 days to cure such default. Such cure period expired on or about September 14, 2014, at which time the default became an event of default and gave the trustee and the holders of the Notes the right to exercise various remedies, including acceleration of the Notes. In accordance with the terms of the Indenture, we intend to notify the trustee, the paying agent and the holder(s) of the Notes, that we elect to pay additional interest on the Notes at a rate equal to 0.50% as the sole remedy available to the holders of the Notes for the 180-day period commencing on or about September 14, 2014. We will cure such event of default by filing this Form 10-Q with the SEC, which filing will, pursuant to the terms of the Indenture, also be deemed a filing with the trustee, at which point we will no longer be required to pay the additional interest on the Notes.
	We are also delinquent in filing with the SEC our Quarterly Report on Form 10-Q for the quarter ended June 30, 2014 (the “2014 Second Quarter Form 10-Q”), which was due to be filed with the SEC on August 11, 2014. On September 3, 2014, the trustee provided us with notice that we were in default under the Indenture because we had not timely filed our 2014 Second Quarter Form 10-Q with the trustee. We will cure such default by the filing of the 2014 Second Quarter Form 10-Q with the SEC, which filing will, pursuant to the terms of the Indenture, also be deemed a filing with the trustee.
	Because we have been delinquent in the filing of certain of our periodic financial reports with the SEC, since November 19, 2013, we have not been in compliance with the Nasdaq listing rule that requires us to timely file such reports with the SEC. On May 2, 2014, the Listing Qualifications Department of The NASDAQ Stock Market LLC (“Nasdaq”) notified us that, due to our delay in filing with the SEC our Quarterly Report on Form 10-Q for the quarter ended September 30, 2013 (the “2013 Third Quarter Form 10-Q”) and our 2013 Form 10-K, our common stock would be delisted unless we timely requested a hearing before a Nasdaq Hearings Panel (the “Panel”). On May 15, 2014, Nasdaq advised us that the delayed filing of this Form 10-Q served as an additional basis for the delisting determination. On August 19, 2014, Nasdaq advised us that our delayed filing of the 2014 Second Quarter Form 10-Q served as a further basis for the delisting determination.
	Upon receiving the May 2, 2014 notice from Nasdaq, we timely requested a hearing before a Panel, and the hearing was held on June 12, 2014. At the hearing, we presented a plan to regain compliance with the listing rule and requested an extension of time in which to do so Thereafter, on June 23, 2014, we filed with the SEC certain delinquent reports that included our 2013 Third Quarter Form 10-Q and 2013 Form 10-K. Following the filing with the SEC of this Form 10-Q, our failure to comply with the Nasdaq listing rule will be due solely to the delayed filing of our 2014 Second Quarter Form 10-Q.
	On July 9, 2014, we received a letter from Nasdaq indicating that the Panel had determined to continue the listing of our common stock subject to the condition that, on or before September 12, 2014, we became current in our periodic filings with the SEC. The letter further indicated that we would also be required to demonstrate at such time that we are in compliance with all other requirements for continued listing on The Nasdaq Stock Market. The Panel indicated that in the event we were unable to satisfy such conditions, our common stock would be delisted.
	On September 5, 2014, following our request that the Panel extend the September 12th date, we were notified that the Panel had extended our date to become current in our periodic filings with the SEC to November 13, 2014. With the filing of this Form 10-Q and our 2014 Second Quarter Form 10-Q, we will become fully current with respect to our periodic filing obligations with the SEC on or before the November 13, 2014 date specified by the Panel.
	As of March 31, 2014, the estimated fair value of our Notes was approximately $210.8 million. The fair value of the Notes was estimated using market prices of the Notes, which are based on Level 2 inputs (i.e. inputs, other than the quoted prices in active markets that are observable either directly or indirectly).
	Senior Secured Revolving Credit Facility
	On December 21, 2012, we entered into a credit agreement (the “Credit Facility Agreement”) establishing a senior secured revolving credit facility (the “Credit Facility”) with certain institutional lenders and Bank of America, N.A., as administrative agent and lender, that provides for an aggregate loan amount of up to $150 million. The Credit Facility is expected to mature on December 21, 2016, but may mature on September 14, 2015 if beginning on June 15, 2015 we do not have available liquidity (domestic cash and investments, plus availability under the Credit Facility) of $25 million in excess of the amount required to repay our Notes of $200 million in full. If we satisfy this requirement between June 15, 2015 and September 14, 2015, but fail to do so after September 15, 2015 and prior to December 15, 2015, the maturity date is the date on which the requirement is no longer satisfied.
	The Credit Facility includes a sublimit of up to $25 million for the issuance of standby letters of credit and a swingline facility of up to $15 million, to be used, among other things, to fund our working capital needs, to fund capital expenditures and for other general corporate purposes (including acquisitions), stock repurchases and any partial refinancing of our Notes. We may from time to time request an increase to the Credit Facility by an amount of up to $50 million, which increase would be subject to the consent of the lender or lenders (if any) assuming the increased obligations.
	Borrowings under the Credit Facility bear interest at either (i) the base rate, which is equal to the highest of (a) the administrative agent’s prime rate, (b) the federal funds rate plus 0.50% and (c) the London Interbank Offered Rate ("LIBOR") for a one month interest period plus 1.00% or (ii) LIBOR plus the applicable margin. The applicable margin ranges are from 1.75% to 2.25% for LIBOR loans and 0.75% to 1.25% for base rate loans, and depends on the Company’s total leverage ratio (as defined in the Credit Facility Agreement). Interest is payable quarterly. No amounts were drawn down under this Credit Facility as of March 31, 2014.
	Our obligations under the Credit Facility are guaranteed by Net Optics, Inc., Anue Systems, Inc., BreakingPoint Systems, Inc., Catapult Communications Corporation and VeriWave, Inc., all of which are wholly owned domestic subsidiaries of Ixia, by Net Optics IL, LLC, which is a wholly owned domestic subsidiary of Net Optics,, and by any future domestic or foreign subsidiaries of Ixia or such guarantors, provided that no foreign subsidiary will be required to become a guarantor to the extent the guaranty would result in a material adverse tax consequence to the Company. The Credit Facility is secured by a first priority security interest in substantially all existing and after acquired tangible and intangible personal property of Ixia and of the guarantors and by the pledge by Ixia and by the guarantors of all outstanding equity securities of their respective domestic subsidiaries and 65% of the outstanding equity securities of directly owned foreign subsidiaries.
	Amortization recorded to interest expense pertaining to deferred issuance costs for the three months ended March 31, 2014 and 2013 was $58,000 and $68,000, respectively.
	We are required to pay a commitment fee on the unused portion of the Credit Facility of up to a maximum of $450,000 or 0.30% depending on the Company’s total leverage ratio.
	The Credit Facility Agreement requires the Company to comply with certain covenants, including maintaining (i) an interest coverage ratio (as defined in the Credit Facility Agreement) of greater than 3.50 to 1.00, measured quarterly on a trailing twelve months basis and (ii) a maximum leverage ratio (as defined in the Credit Facility Agreement) of not greater than 3.50 to 1.00 through June 30, 2014 and 3.00 to 1.00 thereafter, measured quarterly on a trailing twelve months basis. The Credit Facility Agreement also requires us to timely provide certain periodic financial statements to the lenders. In connection with the delayed delivery to the lenders of our financial statements for the quarters ended September 30, 2013, December 31, 2013, March 31, 2014 and June 30, 2014 and of our audited financial statements for the fiscal year ended December 31, 2013, we entered into agreements with the lenders that amended the Credit Facility Agreement to extend the dates for such deliveries. As of the date of the filing of this Form 10-Q, we have completed all such deliveries other than the delivery of our financial statements for the quarter ended June 30, 2014. The lenders’ waiver of that late delivery expired on August 29, 2014, as discussed in more detail below.
	On May 15, 2014, we entered into an amendment and waiver agreement with the lenders that included a waiver from the lenders of any breach of the Credit Facility Agreement (which requires us to comply with the Indenture governing our Notes) arising out of our failure to comply with the covenant in the Indenture that requires us to timely file with the trustee this Form 10-Q. This waiver is only effective as long as (i) no event of default occurs under the Indenture due to our failure to complete any necessary remedial action in respect of the delayed filing within 60 days of receipt of notice from either the trustee under the Indenture or the holders of 25% of the aggregate principal amount of our Notes demanding such remedial action (such a notice was received by the Company from the trustee on or about July 16, 2014) and (ii) no delisting of our common stock from the Nasdaq Global Select Market occurs. This waiver expired on or about September 14, 2014 in connection with the occurrence of an event of default under our Indenture as described above.
	Under an amendment to the Credit Facility Agreement dated June 27, 2014, the date for delivery of our financial statements for the quarter ended June 30, 2014 was extended to August 29, 2014. We did not, however, deliver the financial statements on or before that date. On August 29, 2014, the administrative agent provided us with notice that we were in default under the Credit Facility Agreement because we had not timely provided the administrative agent with our financial statements for the quarter ended June 30, 2014 and a related compliance certificate and because we were in default under the Indenture for failing to timely file this Form 10-Q with the trustee. The administrative agent’s notice expressly reserved the rights of the administrative agent and the lenders to exercise their respective rights, powers, privileges and remedies in connection with such event or events of default. Due to the occurrence of such event or events of defaults, the Company is blocked from borrowing and obtaining letters of credit under the credit facility provided under the Credit Agreement. The administrative agent also has the right (with the consent of a majority of the lenders based on total credit exposure) or obligation (at the request of such a majority of the lenders) to terminate the Credit Facility Agreement, accelerate any amounts due thereunder and exercise all other available remedies. We do not have a contractual right to cure these defaults, and the defaults may be waived only with the consent of a majority of the lenders based on total credit exposure. As of the date of the filing of this Form 10-Q, no amounts are outstanding under the Credit Facility Agreement.
	The Credit Facility Agreement also provides for customary events of default (subject to grace and cure periods in certain cases) including, without limitation, (a) failure to pay (with no grace period for the nonpayment of principal); (b) defaults under other documents executed and delivered in connection with the Credit Facility Agreement; (c) bankruptcy or the commencement of insolvency proceedings, including the appointment of a receiver; (d) changes of control; and (e) failure to perform or observe covenants contained in the Credit Facility Agreement or related documents. Upon the occurrence of an event of default, the principal and accrued interest under the Credit Facility then outstanding may be declared due and payable, the Credit Facility Agreement may under circumstances be terminated, and the administrative agent and the lenders may exercise all other available remedies. An event of default related to certain events of bankruptcy, insolvency or reorganization with respect to the Company will automatically cause the acceleration of payment of the unpaid principal and accrued interest on all outstanding loans.

Note_6_Selected_Balance_Sheet_

Note 6 - Selected Balance Sheet Data	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block Supplement [Abstract]	'
Supplemental Balance Sheet Disclosures [Text Block]	'
	6.    Selected Balance Sheet Data
	Investments in Marketable Securities
	Investments in marketable securities as of March 31, 2014 consisted of the following (in thousands):
		Amortized		Gross Unrealized		Gross Unrealized			Fair
		Cost		Gains		Losses			Value
	Available-for-sale – short-term:
	U.S. Treasury, government and agency debt securities	$	29,490	$	35	$	(12	)	$	29,513
	Corporate debt securities		25,672		83		(3	)		25,752
	Total	$	55,162	$	118	$	(15	)	$	55,265
	Investments in marketable securities as of December 31, 2013 consisted of the following (in thousands):
		Amortized		Gross Unrealized		Gross Unrealized			Fair
		Cost		Gains		Losses			Value
	Available-for-sale – short-term:
	U.S. Treasury, government and agency debt securities	$	31,717	$	26	$	(1	)		31,742
	Corporate debt securities		19,720		56		(11	)		19,765
	Total	$	51,437	$	82	$	(12	)	$	51,507
	As of March 31, 2014 and December 31, 2013, our available-for-sale securities had a weighted remaining contractual maturity of 1.56 and 1.87 years, respectively. For the three months ended March 31, 2014 and 2013, gross realized gains and gross realized losses were not significant. See Note 8 for information on the unrealized holding gains (losses) on available-for-sale securities reclassified out of accumulated other comprehensive (loss) income into the condensed consolidated statements of operations.
	The amortized cost and fair value of our investments at March 31, 2014, by contractual years-to-maturity, are as follows (in thousands):
		Amortized Cost		Fair Value
	Due in less than 1 year	$	8,875	$	8,884
	Due within 1-2 years		32,583		32,642
	Due within 2-5 years		13,704		13,739
	Total	$	55,162	$	55,265
	Inventories
	Inventories consist of the following (in thousands):
		March 31,		December 31,
		2014		2013
	Raw materials	$	7,459	$	7,468
	Work in process		15,186		15,166
	Finished goods		21,227		24,502
		$	43,872	$	47,136
	Accrued expenses and other
	As of March 31, 2014 and December 31, 2013, accrued vacation totaled $8.7 million and $9.3 million, respectively.

Note_7_Goodwill_and_Other_Inta

Note 7 - Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Goodwill and Intangible Assets Disclosure [Text Block]	'
	7.    Goodwill and Other Intangible Assets
	The following table presents the activity for our goodwill (in thousands):
	Balance at December 31, 2013	$	338,836
	Other		378
	Balance at March 31, 2014	$	339,214
	During the first quarter of 2014, we identified measurement period adjustments to previous purchase accounting estimates for the December 5, 2013 acquisition of Net Optics, which were retrospectively adjusted to the acquisition date. The differences from estimated values resulted from our updated preliminary assessment of the tax basis of certain intangible assets and the finalization of the Net Optics’ net working capital adjustment. These adjustments resulted in a decrease to goodwill of $32.9 million and are reflected in the December 31, 2013 goodwill balance in the above table. See Note 3 for additional information.
	We have not had any historical goodwill impairment charges.
	The following table presents our purchased intangible assets (in thousands) as of March 31, 2014:
		Weighted
		Average
		Useful Life		Gross		Accumulated			Net
		(in years)				Amortization
	Other intangible assets:
	Technology		5.5	$	185,665	$	(88,822	)	$	96,843
	Customer relationships		6		71,700		(31,918	)		39,782
	Service agreements		6.2		36,200		(10,877	)		25,323
	Non-compete agreements		4.1		9,000		(3,095	)		5,905
	Trademark		5.1		11,300		(3,558	)		7,742
	Other		3.8		4,341		(1,204	)		3,137
				$	318,206	$	(139,474	)	$	178,732
	The following table presents our purchased intangible assets (in thousands) as of December 31, 2013:
		Weighted
		Average
		Useful Life		Gross		Accumulated			Net
		(in years)				Amortization
	Other intangible assets:
	Technology		5.5	$	184,377	$	(81,876	)	$	102,501
	Customer relationships		6		71,700		(28,911	)		42,789
	Service agreements		6.2		36,200		(9,398	)		26,802
	Non-compete agreements		4.1		9,000		(2,545	)		6,455
	Trademark		5.1		11,300		(3,066	)		8,234
	Other		3.7		4,211		(1,043	)		3,168
				$	316,788	$	(126,839	)	$	189,949
	The estimated future amortization expense of purchased intangible assets as of March 31, 2014 is as follows (in thousands):
	Remaining in 2014	$	34,178
	2015		42,233
	2016		38,909
	2017		31,757
	2018		20,296
	2019		7,368
	Thereafter		3,991
		$	178,732

Note_8_Shareholders_Equity

Note 8 - Shareholders' Equity	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
Stockholders' Equity Note Disclosure [Text Block]	'
	8.    Shareholders’ Equity
	Share Cancellation
	Certain of the Company’s performance-based equity awards include a forfeiture provision that provides for the forfeiture of the unvested portion of such equity awards in the event that the Company concludes that it is required to restate its previously issued financial statements to reflect a less favorable financial condition and/or less favorable results of operations. On April 2, 2013, the Company concluded to restate certain previously issued unaudited condensed consolidated financial statements, and, due to such forfeiture-provisions, we have for accounting purposes deemed such equity awards to have been automatically forfeited and subsequently re-granted. As a result, we recorded a reversal of stock-based compensation expenses for the deemed cancellation of $4.0 million during the quarter ended June 30, 2013. Stock-based compensation expenses for the deemed re-grants were $12,000 for the three months ended March 31, 2014.
	On June 24, 2014, certain performance-based equity awards that, for accounting purposes, were deemed to have been automatically forfeited as a result of the aforementioned restatement were deemed to have been re-granted. As a result, we expect to record additional stock-based compensation expense related to these deemed re-grants of approximately $484,000 in the 2014 second quarter.
	Accumulated Other Comprehensive (Loss) Income
	The following table summarizes, as of each balance sheet date, the changes in our accumulated other comprehensive (loss) income, by component, net of income taxes (in thousands):
			Gains and Losses on Available-for-			Foreign Currency			Total
			Sale			Items (a)
			Securities (a)
	Beginning balance, December 31, 2013		$	42		$	(419	)	$	(377	)
	Other comprehensive (loss) income before reclassifications			45			135			180
	Amounts reclassified from accumulated other comprehensive (loss) income (b)			(11	)		-			(11	)
	Net current-period other comprehensive (loss) income			34			135			169
	Ending balance, March 31, 2014		$	76		$	(284	)	$	(208	)
	(a)	All amounts are net-of-tax. Amounts in parentheses indicate reductions.
	(b)	Amount represents gain on the sale of securities and is included as a component of Interest income and other, net in the condensed consolidated statements of operations.
	Amounts reclassified from Accumulated other comprehensive (loss) income, net to Net (loss) income for realized gains or losses on Available-for-sale securities are recorded in Interest income and other, net.

Note_9_Loss_Earnings_Per_Share

Note 9 - (Loss) Earnings Per Share	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share [Text Block]	'
	9.    (Loss) Earnings Per Share
	Basic net (loss) earnings per common share is computed by dividing net (loss) income by the weighted average number of common shares outstanding during the period. Diluted net (loss) earnings per common share is computed by giving effect to all potential dilutive common shares, including stock awards.
	The following table sets forth the computation of basic and diluted (loss) earnings per share for the three months ended March 31, 2014 and 2013 (in thousands, except per share data):
		Three months ended
		March 31,
		2014			2013
	Basic presentation:
	Numerator for basic (loss) earnings per share:
	Net (loss) income	$	(19,472	)	$	7,820
	Denominator for basic (loss) earnings per share:
	Weighted average common shares outstanding		76,951			74,718
	Basic (loss) earnings per share	$	(0.25	)	$	0.1
	Diluted presentation:
	Numerator for diluted (loss) earnings per share:
	Net (loss) income	$	(19,472	)	$	7,820
	Interest expense on convertible senior notes, net of tax		—			—
	Net (loss) income used for diluted (loss) earnings per share	$	(19,472	)	$	7,820
	Denominator for dilutive (loss) earnings per share:
	Weighted average common shares outstanding		76,951			74,718
	Effect of dilutive securities:
	Stock options and other share-based awards		—			2,201
	Convertible senior notes		—			—
	Dilutive potential common shares		76,951			76,919
	Diluted (loss) earnings per share	$	(0.25	)	$	0.1
	The diluted (loss) earnings per share computation for the three months ended March 31, 2014 and 2013 excludes (i) the weighted average number of shares underlying our outstanding 3.00% Convertible Senior Notes due December 15, 2015 of 10.3 million shares as such shares are considered anti-dilutive because the related interest expense on a per common share “if converted” basis exceeds basic (loss) earnings per share and (ii) the weighted average number of shares underlying our employee stock options and other share-based awards of 3.9 million shares and 1.3 million shares, respectively, which are anti-dilutive because, in general, the exercise prices of these awards (to the extent such awards have exercise prices) exceeds the average closing sales price per share of our common stock during the applicable period or were anti-dilutive because the Company reported a net loss for the applicable period.

Note_10_Concentrations

Note 10 - Concentrations	3 Months Ended
	Mar. 31, 2014
Risks and Uncertainties [Abstract]	'
Concentration Risk Disclosure [Text Block]	'
	10.    Concentrations
	Revenue by Product Line
	We have two product lines: Network Test Solutions and Network Visibility Solutions. Our Network Test products include our multi-slot test chassis and appliances, our traffic generation interface cards, our suite of test applications, and the related technical support, warranty and software maintenance services, including our Application and Threat Intelligence (ATI) service. Our Network Visibility products include our network packet brokers, bypass switches, virtual and physical taps and the related technical support, warranty and software maintenance services. The following table presents revenue by product line (in thousands):
		Three months ended March 31,
		2014			2013
	Network Test Solutions	$	89,525		$	95,117
	Network Visibility Solutions		24,208			26,342
		$	113,733		$	121,459
	Significant Customers
	The following customers accounted for more than 10% of total revenue for the three months ended March 31, 2014 in the case of Customer B, and March 31, 2013, in the case of Customers A and B:
		Three months ended
		March 31,
		2014			2013
	Customer A		*			18.6	%
	Customer B		10.3	%		11.5	%
	* Less than 10%
	As of March 31, 2014 and December 31, 2013, the percentage of total receivables for Customer A was below 10% and for Customer B was as follows:
		March 31,			December 31,
		2014			2013
	Customer B		12	%		*
	* Less than 10%
	International Data
	For the three months ended March 31, 2014 and 2013, the percentages of total revenues consisting of international revenues based on customer location consisted of the following:
		Three months ended
		March 31,
		2014			2013
	International revenues		41	%		37.8	%
	Within international revenues disclosed above, the percentage of total revenues from product shipments to Japan for the three months ended March 31, 2014 and 2013 were as follows:
		Three months ended
		March 31,
		2014			2013
	Japan		11.4	%		12.4	%
	As of March 31, 2014 and December 31, 2013, our property and equipment, net were geographically located as follows (in thousands):
		31-Mar-14			31-Dec-13
	United States	$	23,312		$	22,614
	India		4,962			5,300
	Romania		4,891			4,715
	Other		3,314			3,303
	Total	$	36,479		$	35,932

Note_11_Fair_Value_Measurement

Note 11 - Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures [Text Block]	'
	11.  Fair Value Measurements
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in the principal or most advantageous market for an asset or liability in an orderly transaction between market participants at the measurement date. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. We categorize each of our fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. This hierarchy prioritizes the inputs into three broad levels as follows:
	Level 1.	Observable inputs such as quoted prices in active markets;
	Level 2.	Inputs, other than quoted prices in active markets, that are observable either directly or indirectly; and
	Level 3.	Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.
	Financial assets carried at fair value as of March 31, 2014 and December 31, 2013 are classified in the table below in one of the three categories described above (in thousands):
			31-Mar-14								31-Dec-13
			Fair Value		Quoted		Significant		Significant		Fair Value		Quoted		Significant		Significant
					Prices in		Other		Unobservable				Prices in		Other		Unobservable
					Active		Observable		Inputs				Active		Observable		Inputs
					Markets for		Inputs		(Level 3)				Markets for		Inputs		(Level 3)
					Identical		(Level 2)						Identical		(Level 2)
					Assets								Assets
					(Level 1)								(Level 1)
	Cash equivalents:
	Money market funds		$	290	$	290	$	—	$	—	$	30	$	30	$	—	$	—
	Corporate debt securities			3,999		—		3,999		—		5,898		—		5,898		—
	Short-term investments:
	U.S. Treasury, government and agency debt securities			29,513		—		29,513		—		31,742		—		31,742		—
	Corporate debt securities			25,752		—		25,752		—		19,765		—		19,765		—
	Total financial assets		$	59,554	$	290	$	59,264	$	—	$	57,435	$	30	$	57,405	$	—
	Our cash and investment instruments are classified within Level 1 or Level 2 of the fair value hierarchy based on quoted prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency.
	To estimate the fair value of our money market funds, U.S. treasury, government and agency debt securities and corporate debt securities, we use the estimated fair value shown in our investment brokerage/custodial statements. To the extent deemed necessary, we may also obtain non-binding market quotes to corroborate the estimated fair values reflected in our investment brokerage/custodial statements.
	There were no transfers of assets between levels within the fair value hierarchy for the three months ended March 31, 2014 and there were no Level 3 assets held at March 31, 2014.

Note_12_Commitments_and_Contin

Note 12 - Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies Disclosure [Text Block]	'
	12.  Commitments and Contingencies
	Securities Class Action
	On November 14, 2013, a purported securities class action complaint captioned Felix Santore v. Ixia, Victor Alston, Atul Bhatnagar, Thomas B. Miller, and Errol Ginsberg was filed against us and certain of our current and former officers and directors in the U.S. District Court for the Central District of California. The lawsuit purports to be a class action brought on behalf of purchasers of the Company’s securities during the period from April 10, 2010 through October 14, 2013. The complaint alleges that the defendants violated the Securities Exchange Act of 1934, as amended (the “Exchange Act”), by making materially false and misleading statements concerning the Company’s recognition of revenues related to its warranty and software maintenance contracts and the academic credentials and employment history of the Company’s former President and Chief Executive Officer, Vic Alston. The complaint also alleges that the defendants made false and misleading statements, and failed to make certain disclosures, regarding the Company’s business, operations and prospects, including regarding the financial statements and internal financial controls that were the subject of the Company’s April 2013 restatement of certain of its prior period financial statements. The complaint alleges that the Company lacked adequate internal financial controls and issued materially false and misleading financial statements for the fiscal years ended December 31, 2010 and 2011, and the fiscal quarters ended March 31, 2011, June 30, 2011, September 30, 2011, March 31, 2012, June 30, 2012 and September 30, 2012. The complaint, which purports to assert claims for violations of Sections 10(b) and 20(a) of the Exchange Act and Rule 10b-5 promulgated thereunder, seeks, on behalf of the purported class, an unspecified amount of monetary damages, interest, fees and expenses of attorneys and experts, and other relief.
	On January 14, 2014, four sets of plaintiffs filed motions for appointment of lead plaintiff. On March 24, 2014, the court issued a minute order appointing Oklahoma Firefighters Pension & Retirement System and Oklahoma Law Enforcement Retirement System (the “Oklahoma Group”) as lead Plaintiffs.
	On June 11, 2014, the Oklahoma Group filed an amended complaint, asserting claims against the same defendants under the same legal theories as were set forth in the initial complaint. The amended complaint also contains allegations that certain of the individual defendants increased their trading in the Company’s stock during February, March, April and May of 2011 and during February and March of 2013, and that the defendants sought to inflate the Company’s reported deferred revenues during the period of February 4, 2011 through April 3, 2013 (the "Class Period"). The amended complaint purports to be brought on behalf of purchasers of the Company’s securities.
	On July 18, 2014, all named defendants moved to dismiss count I of the amended complaint, which purports to assert a claim against all named defendants for violation of Section 10(b) of the Exchange Act and its implementing regulation, Rule 10b-5. Additionally, the individual defendants separately filed motions to dismiss count II of the amended complaint, which purports to assert a claim for violation of Section 20(a) of the Exchange Act against only the individual defendants, as well as advancing certain additional arguments in support of dismissing count I against the individual defendants. The Oklahoma Group’s omnibus opposition to the July 18, 2014 motions to dismiss was filed on August 18, 2014, while the defendants’ replies were filed on September 8, 2014. A hearing on the motions to dismiss is scheduled for October 6, 2014.
	Although the Company denies the material allegations of the amended complaint and intends to vigorously pursue its defenses, we are in the very early stages of this litigation, and are unable to predict the outcome of the case or to estimate the amount of or potential range of loss with respect to this case. However, the ultimate disposition of the case could have a material adverse impact on the Company’s financial condition, results of operations and cash flows.
	Shareholder Derivative Actions
	Two derivative actions by purported shareholders of the Company, which were recently consolidated into one action, are pending in the U.S. District Court for the Central District of California. The lawsuits are captioned (i) Erie County Employees' Retirement System, Derivatively on Behalf of Nominal Defendant IXIA v. Victor Alston, Errol Ginsberg, Laurent Asscher, Jonathan Fram, Gail Hamilton, Jon Rager, Atul Bhatnagar, and Thomas B. Miller, defendants, and Ixia, nominal defendant and (ii) Colleen Witmer, derivatively on behalf of Ixia v. Victor Alston, Atul Bhatnagar, Thomas B. Miller, Errol Ginsberg, Jonathan Fram, Laurent Asscher, Gail Hamilton, Jon F. Rager, Christopher Lee Williams, Alan Grahame, Raymond De Graaf, Walker H. Colston II, and Ronald W. Buckly, defendants, and Ixia, nominal defendant. The consolidated action is now captioned In re Ixia Shareholder Derivative Litigation. The Erie County and Witmer actions were previously filed in the Superior Court of the State of California in January 2014 and February 2014, respectively, but were subsequently dismissed and thereafter refiled in the U.S. District Court in May 2014.
	Pursuant to a scheduling order issued by the District Court, on September 2, 2014, the two plaintiffs filed a consolidated complaint. The complaint includes many allegations similar to those made in the purported class action complaint described above. Among other things, the complaint alleges that some or all (depending upon the claim) of the defendants breached their fiduciary duties to the Company by causing or allowing the Company to disseminate misleading financial statements, ignoring problems with the Company’s financial controls, making stock sales on the basis of material, non-public information, and violating the Company’s code of conduct. As relief, among other things, the complaint seeks an unspecified amount of monetary damages, disgorgement and restitution of stock sale proceeds and an award under California Corporations Code Sections 24502 and 25502.5, as well as unspecified equitable relief and declaratory relief.
	The Company, on whose behalf the derivative action claims have purportedly been brought, intends to move to dismiss the consolidated complaint on the grounds that the derivative plaintiffs did not file the claims in accordance with applicable laws governing the filing of derivative actions. As we are in the very early stages of this litigation, we are unable to predict the outcome of the litigation or to estimate the amount of or potential range of loss with respect to the consolidated complaint.
	SEC Investigation
	In July 2014, the Staff of the SEC’s Division of Enforcement requested that the Company produce certain documents and information in connection with an investigation of the Company. Based on the documents requested by the Staff, the Company believes that the investigation relates to the matters addressed by (i) the previously disclosed accounting-related investigation conducted by the Audit Committee of the Company’s Board of Directors (the “Board”) that was completed in February 2014 and (ii) a separate internal investigation conducted by a Special Committee of the Board of stock sales during February and March 2013 by then current executive officers and directors of the Company. The Special Committee, which completed its investigation in June 2014, did not find with respect to such sales that there had been any insider trading based upon material non-public information. The Special Committee, however, made no finding with respect to the Company's former President and Chief Executive Officer, Victor Alston, because he declined to be interviewed by the Special Committee's counsel (both the Special Committee and the Audit Committee were assisted by independent counsel in their investigations). The Company is cooperating fully with the Staff in this matter. The Company cannot predict the duration, scope or outcome of the Staff’s investigation.

Note_13_Income_Taxes

Note 13 - Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Tax Disclosure [Text Block]	'
	13. Income Taxes
	The Company accounts for its provision for income taxes in accordance with Accounting Standard Codification (“ASC”) 740, Income Taxes. In accordance with ASC 740, the Company uses an estimate of its annual effective rate for the full fiscal year in computing the year-to-date provision for income taxes for the interim periods, including federal, foreign, state and local income taxes.
	During the first quarter of 2014, a measurement period adjustment was recorded to finalize the previous purchase accounting estimates resulting from the update to the tax basis of certain intangible assets for the December 5, 2013 acquisition of Net Optics (See Note 3 for additional information). The differences from estimated values resulted in an increase to deferred tax assets of $26.9 million, and a corresponding decrease to goodwill, which were retrospectively adjusted to the acquisition date (i.e., December 5, 2013).
	As of March 31, 2014 and December 31, 2013, current deferred tax assets totaled $14.3 million and $14.0 million, respectively, and were included within the Prepaid expenses and other current assets line item on our condensed consolidated balance sheets. As of March 31, 2014 and December 31, 2013, long-term deferred tax assets totaled $7.0 million and $19.8 million, respectively, and were included within the Other assets line item on our condensed consolidated balance sheets. The reduction in long-term deferred tax assets in the first quarter of 2014 was due to the inter-company transfer of intellectual property to a foreign jurisdiction.  There were no current deferred tax liabilities at March 31, 2014 and December 31, 2013. As of March 31, 2014 and December 31, 2013, long-term deferred tax liabilities totaled $1.4 million and were included within the Other liabilities line item on our condensed consolidated balance sheets.

Note_14_Subsequent_Events

Note 14 - Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events [Text Block]	'
	14. Subsequent Events
	On August 1, 2014, the Company committed to and implemented a company-wide restructuring initiative to better align the Company’s operating costs with its business opportunities. The restructuring plan includes the elimination of approximately 5% to 6% of the Company’s worldwide employee base as of June 30, 2014, the rationalization of certain facility costs, and the reduction of other discretionary costs. The Company estimates that the total cost of the restructuring will be approximately $3.5 million to $4.5 million in pre-tax charges primarily for employee severance and related costs, and is expected to be substantially completed in the third quarter of 2014.
	On August 21, 2014, the Company announced that its Board of Directors (the “Board”) has appointed Bethany Mayer as the Company’s President and Chief Executive Officer and as a member of the Board effective the day after the Company becomes current in making its periodic filings with the SEC.
	Ms. Mayer will be paid an annual base salary of $650,000 and a guaranteed cash bonus for 2014 of $500,000. The Company will also pay to Ms. Mayer, who as of the date of the filing of this Form 10-Q is the senior vice president and general manager of the Network Functions Virtualization business of Hewlett-Packard Company (“HP”), an additional cash bonus in an amount equal to the in-the-money value of her unvested HP equity awards that would have vested between the termination date of her employment at HP and December 31, 2014 had she remained with HP. The amount of this additional cash bonus, which will paid within five calendar days following the commencement of her employment with the Company, will be calculated based on the closing sales price of a share of HP common stock on the termination date of Ms. Mayer’s employment with HP. Based on the closing sales price of HP common stock on August 20, 2014, the Company estimates that the bonus will be in the amount of approximately $2,400,000. If Ms. Mayer’s employment with the Company terminates prior to October 1, 2015, under certain circumstances, then she will be required to repay a pro rata portion of such bonus based on the number of months of Ms. Mayer’s service to the Company.
	Within 30 days after the commencement of Ms. Mayer’s employment with the Company, Ms. Mayer will also be granted, pursuant to the Company’s Second Amended and Restated 2008 Equity Incentive Plan and subject to the approval of the Compensation Committee of the Company’s Board of Directors, non-statutory stock options (“NSOs”) to purchase 700,000 shares of the Company’s common stock. Additionally, the Company expects to grant to Ms. Mayer in 2015 an annual equity incentive award in the range of from 300,000 to 400,000 option equivalents.

Accounting_Policies_by_Policy_

Accounting Policies, by Policy (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of Accounting, Policy [Policy Text Block]	'
	Basis of Presentation
	The accompanying condensed consolidated financial statements as of March 31, 2014 and for the three months ended March 31, 2014 and 2013, are unaudited and reflect all adjustments (consisting only of normal recurring adjustments) which are, in the opinion of management, necessary for a fair statement of our financial position, operating results, and cash flows for the interim periods presented. Certain retrospective adjustments were made to the prior period consolidated balance sheet that was reported in our Annual Report on Form 10-K for the year ended December 31, 2013, as filed with the SEC on June 23, 2014 (the “2013 Form 10-K”). These retrospective adjustments were measurement period purchase accounting adjustments related to our purchase of Net Optics. See Note 3 for additional information. The results of operations for the three months ended March 31, 2014 presented are not necessarily indicative of results to be expected for the full year ending December 31, 2014 or any other future period.
	These condensed consolidated financial statements have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. The condensed consolidated balance sheet as of December 31, 2013 has been derived from our audited consolidated financial statements included in our 2013 Form 10-K (before the retrospective measurement period purchase accounting adjustments described in Note 3), but does not include all disclosures required by GAAP. These condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our 2013 Form 10-K.
New Accounting Pronouncements, Policy [Policy Text Block]	'
	Recent Accounting Pronouncements
	In June 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-12, Accounting for Share-Based Payments When the Terms of an Award Provide that a Performance Target Could Be Achieved after the Requisite Service Period, which provides new guidance regarding share-based compensation. The new guidance clarified that share-based compensation performance targets that could be achieved after the requisite service period should be treated as a performance condition that affects vesting, rather than a condition that affects the grant-date fair value of the award. The standard will be effective for annual reporting periods beginning after December 15, 2015, including interim periods within that reporting period. Early adoption is permitted. We have not evaluated the impact of the adoption of this accounting standard update on our consolidated financial statements.
	During May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers, which provides new guidance on the recognition of revenue and states that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The standard will be effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is not permitted. We have not evaluated the impact of the adoption of this accounting standard update on our consolidated financial statements.
	In July 2013, the FASB issued changes to the presentation of an unrecognized tax benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists. These changes require an entity to present an unrecognized tax benefit as a liability in the financial statements if (i) a net operating loss carryforward, a similar tax loss, or a tax credit carryforward is not available at the reporting date under the tax law of the applicable jurisdiction to settle any additional income taxes that would result from the disallowance of a tax position, or (ii) the tax law of the applicable jurisdiction does not require the entity to use, and the entity does not intend to use, the deferred tax asset to settle any additional income taxes that would result from the disallowance of a tax position. Otherwise, an unrecognized tax benefit is required to be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. Previously, there was diversity in practice as no explicit guidance existed. The effective date for this disclosure guidance is for fiscal years beginning after December 15, 2013. The adoption of this accounting standard update did not have a significant impact on our consolidated financial statements.

Note_3_Acquisitions_Tables

Note 3 - Acquisitions (Tables)	3 Months Ended
	Mar. 31, 2014
Business Combinations [Abstract]	'
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]	'
	Cash and cash equivalents	$	1,967
	Accounts receivable		9,253
	Inventories		6,543
	Prepaid and other assets		1,742
	Fixed assets		2,976
	Deferred tax asset		26,915
	Identifiable intangible assets		72,858
	Goodwill		79,069
	Total assets acquired		201,323
	Accounts payable, accrued expenses and other liabilities		(8,441	)
	Deferred revenues		(5,170	)
	Net assets acquired	$	187,712
Business Acquisition, Pro Forma Information [Table Text Block]	'
		Three Months Ended
		31-Mar-13
	Total revenues	$	133,537
	Net income		5,389

Note_4_Restructuring_Tables

Note 4 - Restructuring (Tables)	3 Months Ended
	Mar. 31, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring and Related Costs [Table Text Block]	'
					BreakingPoint			Test			Net Optics
		Total			Restructuring			Restructuring			Restructuring
	Accrual at December 31, 2012	$	1,026		$	1,026		$	-		$	-
	Charges		1,833			51			1,782			-
	Payments		(1,161	)		(474	)		(687	)		-
	Non-cash items		(191	)		(191	)		-			-
	Accrual at December 31, 2013		1,507			412			1,095			-
	Charges		3,564			-			90			3,474
	Payments		(3,261	)		(39	)		(1,108	)		(2,114	)
	Non-cash items		24			24			-			-
	Accrual at March 31, 2014	$	1,834		$	397		$	77		$	1,360

Note_6_Selected_Balance_Sheet_1

Note 6 - Selected Balance Sheet Data (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block Supplement [Abstract]	'
Available-for-sale Securities [Table Text Block]	'
		Amortized		Gross Unrealized		Gross Unrealized			Fair
		Cost		Gains		Losses			Value
	Available-for-sale – short-term:
	U.S. Treasury, government and agency debt securities	$	29,490	$	35	$	(12	)	$	29,513
	Corporate debt securities		25,672		83		(3	)		25,752
	Total	$	55,162	$	118	$	(15	)	$	55,265
		Amortized		Gross Unrealized		Gross Unrealized			Fair
		Cost		Gains		Losses			Value
	Available-for-sale – short-term:
	U.S. Treasury, government and agency debt securities	$	31,717	$	26	$	(1	)		31,742
	Corporate debt securities		19,720		56		(11	)		19,765
	Total	$	51,437	$	82	$	(12	)	$	51,507
Investments Classified by Contractual Maturity Date [Table Text Block]	'
		Amortized Cost		Fair Value
	Due in less than 1 year	$	8,875	$	8,884
	Due within 1-2 years		32,583		32,642
	Due within 2-5 years		13,704		13,739
	Total	$	55,162	$	55,265
Schedule of Inventory, Current [Table Text Block]	'
		March 31,		December 31,
		2014		2013
	Raw materials	$	7,459	$	7,468
	Work in process		15,186		15,166
	Finished goods		21,227		24,502
		$	43,872	$	47,136

Note_7_Goodwill_and_Other_Inta1

Note 7 - Goodwill and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Schedule of Goodwill [Table Text Block]	'
	Balance at December 31, 2013	$	338,836
	Other		378
	Balance at March 31, 2014	$	339,214
Schedule of Finite-Lived Intangible Assets [Table Text Block]	'
		Weighted
		Average
		Useful Life		Gross		Accumulated			Net
		(in years)				Amortization
	Other intangible assets:
	Technology		5.5	$	185,665	$	(88,822	)	$	96,843
	Customer relationships		6		71,700		(31,918	)		39,782
	Service agreements		6.2		36,200		(10,877	)		25,323
	Non-compete agreements		4.1		9,000		(3,095	)		5,905
	Trademark		5.1		11,300		(3,558	)		7,742
	Other		3.8		4,341		(1,204	)		3,137
				$	318,206	$	(139,474	)	$	178,732
		Weighted
		Average
		Useful Life		Gross		Accumulated			Net
		(in years)				Amortization
	Other intangible assets:
	Technology		5.5	$	184,377	$	(81,876	)	$	102,501
	Customer relationships		6		71,700		(28,911	)		42,789
	Service agreements		6.2		36,200		(9,398	)		26,802
	Non-compete agreements		4.1		9,000		(2,545	)		6,455
	Trademark		5.1		11,300		(3,066	)		8,234
	Other		3.7		4,211		(1,043	)		3,168
				$	316,788	$	(126,839	)	$	189,949
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	'
	Remaining in 2014	$	34,178
	2015		42,233
	2016		38,909
	2017		31,757
	2018		20,296
	2019		7,368
	Thereafter		3,991
		$	178,732

Note_8_Shareholders_Equity_Tab

Note 8 - Shareholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	'
		Gains and Losses on Available-for-			Foreign Currency			Total
		Sale			Items (a)
		Securities (a)
	Beginning balance, December 31, 2013	$	42		$	(419	)	$	(377	)
	Other comprehensive (loss) income before reclassifications		45			135			180
	Amounts reclassified from accumulated other comprehensive (loss) income (b)		(11	)		-			(11	)
	Net current-period other comprehensive (loss) income		34			135			169
	Ending balance, March 31, 2014	$	76		$	(284	)	$	(208	)

Note_9_Loss_Earnings_Per_Share1

Note 9 - (Loss) Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	'
		Three months ended
		March 31,
		2014			2013
	Basic presentation:
	Numerator for basic (loss) earnings per share:
	Net (loss) income	$	(19,472	)	$	7,820
	Denominator for basic (loss) earnings per share:
	Weighted average common shares outstanding		76,951			74,718
	Basic (loss) earnings per share	$	(0.25	)	$	0.1
	Diluted presentation:
	Numerator for diluted (loss) earnings per share:
	Net (loss) income	$	(19,472	)	$	7,820
	Interest expense on convertible senior notes, net of tax		—			—
	Net (loss) income used for diluted (loss) earnings per share	$	(19,472	)	$	7,820
	Denominator for dilutive (loss) earnings per share:
	Weighted average common shares outstanding		76,951			74,718
	Effect of dilutive securities:
	Stock options and other share-based awards		—			2,201
	Convertible senior notes		—			—
	Dilutive potential common shares		76,951			76,919
	Diluted (loss) earnings per share	$	(0.25	)	$	0.1

Note_10_Concentrations_Tables

Note 10 - Concentrations (Tables)	3 Months Ended
	Mar. 31, 2014
Note 10 - Concentrations (Tables) [Line Items]	'
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	'
		Three months ended March 31,
		2014			2013
	Network Test Solutions	$	89,525		$	95,117
	Network Visibility Solutions		24,208			26,342
		$	113,733		$	121,459
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]	'
		Three months ended
		March 31,
		2014			2013
	International revenues		41	%		37.8	%
		Three months ended
		March 31,
		2014			2013
	Japan		11.4	%		12.4	%
Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]	'
		31-Mar-14			31-Dec-13
	United States	$	23,312		$	22,614
	India		4,962			5,300
	Romania		4,891			4,715
	Other		3,314			3,303
	Total	$	36,479		$	35,932
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member]	'
Note 10 - Concentrations (Tables) [Line Items]	'
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	'
		Three months ended
		March 31,
		2014			2013
	Customer A		*			18.6	%
	Customer B		10.3	%		11.5	%
Accounts Receivable [Member] | Customer Concentration Risk [Member]	'
Note 10 - Concentrations (Tables) [Line Items]	'
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]	'
		March 31,			December 31,
		2014			2013
	Customer B		12	%		*

Note_11_Fair_Value_Measurement1

Note 11 - Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
		31-Mar-14								31-Dec-13
		Fair Value		Quoted		Significant		Significant		Fair Value		Quoted		Significant		Significant
				Prices in		Other		Unobservable				Prices in		Other		Unobservable
				Active		Observable		Inputs				Active		Observable		Inputs
				Markets for		Inputs		(Level 3)				Markets for		Inputs		(Level 3)
				Identical		(Level 2)						Identical		(Level 2)
				Assets								Assets
				(Level 1)								(Level 1)
	Cash equivalents:
	Money market funds	$	290	$	290	$	—	$	—	$	30	$	30	$	—	$	—
	Corporate debt securities		3,999		—		3,999		—		5,898		—		5,898		—
	Short-term investments:
	U.S. Treasury, government and agency debt securities		29,513		—		29,513		—		31,742		—		31,742		—
	Corporate debt securities		25,752		—		25,752		—		19,765		—		19,765		—
	Total financial assets	$	59,554	$	290	$	59,264	$	—	$	57,435	$	30	$	57,405	$	—

Note_1_Business_Details

Note 1 - Business (Details)	3 Months Ended
	Mar. 31, 2014
Disclosure Text Block [Abstract]	'
Number of Operating Segments	1

Note_3_Acquisitions_Details

Note 3 - Acquisitions (Details) (USD $)

3 Months Ended

0 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Dec. 05, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Scenario, Previously Reported [Member]

Scenario, Adjustment [Member]

Developed Technology Rights [Member]

Customer Relationships [Member]

Noncompete Agreements [Member]

Trade Names [Member]

Other Intangible Assets [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

BreakingPoint Systems, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Minimum [Member]

Maximum [Member]

Note 3 - Acquisitions (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payments to Acquire Businesses, Gross

'

'

$193,800,000

($6,100,000)

'

'

'

'

'

$187,700,000

$187,700,000

'

'

'

Business Combination, Acquisition Related Costs

1,932,000

1,272,000

'

'

'

'

'

'

'

'

1,800,000

'

'

'

Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Goodwill

26,900,000

'

'

'

'

'

'

'

'

'

'

'

'

26,900,000

Finite-lived Intangible Assets Acquired

'

'

'

'

$50,000,000

$15,800,000

$3,700,000

$3,000,000

$400,000

'

$72,900,000

'

'

'

Acquired Finite-lived Intangible Assets, Weighted Average Useful Life

'

'

'

'

'

'

'

'

'

'

'

'4 months

'7 years

'

Note_3_Acquisitions_Details_Al

Note 3 - Acquisitions (Details) - Allocation of Purchase Price (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 3 - Acquisitions (Details) - Allocation of Purchase Price [Line Items]	'	'
Goodwill	$339,214	$338,836
Net Optics, Inc. [Member]	'	'
Note 3 - Acquisitions (Details) - Allocation of Purchase Price [Line Items]	'	'
Cash and cash equivalents	1,967	'
Accounts receivable	9,253	'
Inventories	6,543	'
Prepaid and other assets	1,742	'
Fixed assets	2,976	'
Deferred tax asset	26,915	'
Identifiable intangible assets	72,858	'
Goodwill	79,069	'
Total assets acquired	201,323	'
Accounts payable, accrued expenses and other liabilities	-8,441	'
Deferred revenues	-5,170	'
Net assets acquired	$187,712	'

Note_3_Acquisitions_Details_Pr

Note 3 - Acquisitions (Details) - Pro Forma Revenues and Net Income of the Combined Entity (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Pro Forma Revenues and Net Income of the Combined Entity [Abstract]	'
Total revenues	$133,537
Net income	$5,389

Note_4_Restructuring_Details

Note 4 - Restructuring (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

12 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2012

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2012

Mar. 31, 2014

Test Operations [Member]

Test Operations [Member]

Test Operations [Member]

Employee Severance [Member]

Facility Closing [Member]

BreakingPoint Systems, Inc. [Member]

BreakingPoint Systems, Inc. [Member]

BreakingPoint Systems, Inc. [Member]

BreakingPoint Systems, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Net Optics, Inc. [Member]

Note 4 - Restructuring (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring and Related Cost, Number of Positions Eliminated

'

'

'

'

'

120

'

'

'

29

'

'

'

45

Restructuring Reserve

$1,834,000

'

$1,507,000

$1,026,000

$77,000

$1,095,000

$1,095,000

'

'

'

$412,000

$397,000

$1,026,000

$1,360,000

Percentage of Workforce Reduced

'

'

'

'

'

6.50%

'

'

'

'

'

'

'

2.30%

Restructuring Charges

3,564,000

58,000

1,833,000

'

90,000

'

1,782,000

2,300,000

1,100,000

'

51,000

'

'

3,474,000

Restructuring and Related Cost, Incurred Cost

'

'

'

'

'

'

'

'

'

'

'

'

'

$149,000

Note_4_Restructuring_Details_A

Note 4 - Restructuring (Details) - Activity Related to Restructuring Plan (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Accrual at	$1,834,000	'	$1,507,000	$1,026,000
Charges	3,564,000	58,000	1,833,000	'
Payments	-3,261,000	'	-1,161,000	'
Non-cash items	24,000	'	'	'
Non-cash items	'	'	-191,000	'
Test Operations [Member]	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Accrual at	77,000	'	1,095,000	'
Charges	90,000	'	1,782,000	'
Payments	-1,108,000	'	-687,000	'
BreakingPoint Systems, Inc. [Member]	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Accrual at	397,000	'	412,000	1,026,000
Charges	'	'	51,000	'
Payments	-39,000	'	-474,000	'
Non-cash items	24,000	'	'	'
Non-cash items	'	'	-191,000	'
Net Optics, Inc. [Member]	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Accrual at	1,360,000	'	'	'
Charges	3,474,000	'	'	'
Payments	($2,114,000)	'	'	'

Note_5_Long_Term_Debt_Details

Note 5 - Long Term Debt (Details) (USD $)

3 Months Ended

24 Months Ended

0 Months Ended

3 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Dec. 07, 2012

Dec. 31, 2013

Dec. 07, 2010

Jul. 16, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Scenario, Forecast [Member]

Through June 30, 2014 [Member]

After June 30, 2014 [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Senior Secured Revolving Credit Facility [Member]

Fair Value, Inputs, Level 2 [Member]

Standby Letters of Credit [Member]

Swingline Facility [Member]

Credit Facility Increase [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Federal Funds Rate [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

London Interbank Offered Rate (LIBOR) [Member]

Base Rate [Member]

Base Rate [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Note 5 - Long Term Debt (Details) [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible Notes Payable, Noncurrent (in Dollars)

$200,000,000

'

'

$200,000,000

$200,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Stated Percentage

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum Aggregate Principal Amount of Outstanding Notes Threshold

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Waiver on Notes Outstanding, Percent

'

'

'

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Covenant, Additional Interest Rate in Event of Default

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of Financing Costs (in Dollars)

300,000

300,000

'

'

'

'

'

'

'

'

'

'

'

'

58,000

68,000

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Ratio

'

'

51.4536

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Insturment Convertible Principal Amount (in Dollars)

'

'

'

'

1,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Convertible, Conversion Price (in Dollars per share)

'

'

'

'

$19.43

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Interest Rate, Increase (Decrease)

'

'

'

'

'

0.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Convertible Debt, Fair Value Disclosures (in Dollars)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

210,800,000

'

'

'

'

'

Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)

150,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,000,000

15,000,000

50,000,000

'

'

Debt Covenants Available Liquidity (in Dollars)

25,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt Instrument, Basis Spread on Variable Rate

'

'

'

'

'

'

'

'

0.50%

1.00%

1.75%

2.25%

0.75%

1.25%

'

'

'

'

'

'

'

'

Minimum Pledge of Outstanding Securities of Directly Owned Foreign Subsidiaries

65.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Commitment Fee Amount (in Dollars)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

$450,000

Line of Credit Facility, Unused Capacity, Commitment Fee Percentage

0.30%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest Coverage Ratio

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.5

'

Leverage Ratio

'

'

'

'

'

'

3.5

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Note_6_Selected_Balance_Sheet_2

Note 6 - Selected Balance Sheet Data (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Disclosure Text Block Supplement [Abstract]	'	'
Available-for-sale Securities, Weighted Remaining Contractual Maturity	'1 year 204 days	'1 year 317 days
Accrued Vacation	$8.70	$9.30

Note_6_Selected_Balance_Sheet_3

Note 6 - Selected Balance Sheet Data (Details) - Investments in Marketable Securities (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	$55,162	$51,437
Gross Unrealized Gains	118	82
Gross Unrealized Losses	-15	-12
Fair Value	55,265	51,507
Short-term Investments [Member] | US Treasury and Government [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	29,490	31,717
Gross Unrealized Gains	35	26
Gross Unrealized Losses	-12	-1
Fair Value	29,513	31,742
Short-term Investments [Member] | Corporate Debt Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Amortized Cost	25,672	19,720
Gross Unrealized Gains	83	56
Gross Unrealized Losses	-3	-11
Fair Value	$25,752	$19,765

Note_6_Selected_Balance_Sheet_4

Note 6 - Selected Balance Sheet Data (Details) - Amortized Cost and Fair Value of Investments (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Amortized Cost and Fair Value of Investments [Abstract]	'
Due in less than 1 year	$8,875
Due in less than 1 year	8,884
Due within 1-2 years	32,583
Due within 1-2 years	32,642
Due within 2-5 years	13,704
Due within 2-5 years	13,739
Total	55,162
Total	$55,265

Note_6_Selected_Balance_Sheet_5

Note 6 - Selected Balance Sheet Data (Details) - Inventories (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventories [Abstract]	'	'
Raw materials	$7,459	$7,468
Work in process	15,186	15,166
Finished goods	21,227	24,502
	$43,872	$47,136

Note_7_Goodwill_and_Other_Inta2

Note 7 - Goodwill and Other Intangible Assets (Details) (Net Optics, Inc. [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Net Optics, Inc. [Member]	'
Note 7 - Goodwill and Other Intangible Assets (Details) [Line Items]	'
Goodwill, Purchase Accounting Adjustments	($32.90)

Note_7_Goodwill_and_Other_Inta3

Note 7 - Goodwill and Other Intangible Assets (Details) - Activity for Goodwill (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Activity for Goodwill [Abstract]	'	'
Balance	$339,214	$338,836
Other	$378	'

Note_7_Goodwill_and_Other_Inta4

Note 7 - Goodwill and Other Intangible Assets (Details) - Purchased Intangible Assets (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Other intangible assets:	'	'
Gross	$318,206	$316,788
Accumulated Amortization	-139,474	-126,839
Net	178,732	189,949
Technology-Based Intangible Assets [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'5 years 6 months	'5 years 6 months
Gross	185,665	184,377
Accumulated Amortization	-88,822	-81,876
Net	96,843	102,501
Customer Relationships [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'6 years	'6 years
Gross	71,700	71,700
Accumulated Amortization	-31,918	-28,911
Net	39,782	42,789
Service Agreements [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'6 years 73 days	'6 years 73 days
Gross	36,200	36,200
Accumulated Amortization	-10,877	-9,398
Net	25,323	26,802
Noncompete Agreements [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'4 years 36 days	'4 years 36 days
Gross	9,000	9,000
Accumulated Amortization	-3,095	-2,545
Net	5,905	6,455
Trademarks [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'5 years 36 days	'5 years 36 days
Gross	11,300	11,300
Accumulated Amortization	-3,558	-3,066
Net	7,742	8,234
Other Intangible Assets [Member]	'	'
Other intangible assets:	'	'
Weighted Average Useful Life	'3 years 292 days	'3 years 255 days
Gross	4,341	4,211
Accumulated Amortization	-1,204	-1,043
Net	$3,137	$3,168

Note_7_Goodwill_and_Other_Inta5

Note 7 - Goodwill and Other Intangible Assets (Details) - Estimated Future Amortization Expense of Purchased Intangible Assets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Estimated Future Amortization Expense of Purchased Intangible Assets [Abstract]	'	'
Remaining in 2014	$34,178	'
2015	42,233	'
2016	38,909	'
2017	31,757	'
2018	20,296	'
2019	7,368	'
Thereafter	3,991	'
	$178,732	$189,949

Note_8_Shareholders_Equity_Det

Note 8 - Shareholders' Equity (Details) (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Mar. 31, 2014
	Stock-based Compensation Expense [Member]	Performance-based Equity Awards Re-granted [Member]	Performance-based Equity Awards Re-granted [Member]
		Scenario, Forecast [Member]
Note 8 - Shareholders' Equity (Details) [Line Items]	'	'	'
Quantifying Misstatement in Current Year Financial Statements, Amount	($4,000,000)	'	'
Allocated Share-based Compensation Expense	'	$484,000	$12,000

Note_8_Shareholders_Equity_Det1

Note 8 - Shareholders' Equity (Details) - Summary of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Summary of Comprehensive Income (Loss) [Abstract]	'		'	'
Gains and Losses on Available-for-Sale Securities	$76	[1]	'	$42	[1]
Foreign Currency Items	-284	[1]	'	-419	[1]
Total	-208		'	-377
Other comprehensive (loss) income before reclassifications	45	[1]	'	'
Other comprehensive (loss) income before reclassifications	135	[1]	'	'
Other comprehensive (loss) income before reclassifications	180		'	'
Amounts reclassified from accumulated other comprehensive (loss) income (b)	-11	[1],[2]	'	'
Amounts reclassified from accumulated other comprehensive (loss) income (b)	'	[1],[2]	'	'
Amounts reclassified from accumulated other comprehensive (loss) income (b)	-11	[2]	'	'
Net current-period other comprehensive (loss) income	34	[1]	'	'
Net current-period other comprehensive (loss) income	135	[1]	-323	'
Net current-period other comprehensive (loss) income	$169		($179)	'
[1]	All amounts are net-of-tax. Amounts in parentheses indicate reductions.
[2]	Amount represents gain on the sale of securities and is included as a component of Interest income and other, net in the condensed consolidated statements of operations.

Note_9_Loss_Earnings_Per_Share2

Note 9 - (Loss) Earnings Per Share (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Convertible Debt Securities [Member]	'	'
Note 9 - (Loss) Earnings Per Share (Details) [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	10.3	10.3
Equity Option [Member]	'	'
Note 9 - (Loss) Earnings Per Share (Details) [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3.9	3.9
Stock Compensation Plan [Member]	'	'
Note 9 - (Loss) Earnings Per Share (Details) [Line Items]	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1.3	1.3

Note_9_Loss_Earnings_Per_Share3

Note 9 - (Loss) Earnings Per Share (Details) - Computation of Basic and Diluted Earnings Per Share (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Computation of Basic and Diluted Earnings Per Share [Abstract]	'	'
Net (loss) income (in Dollars)	($19,472)	$7,820
Net (loss) income used for diluted (loss) earnings per share (in Dollars)	($19,472)	$7,820
Weighted average common shares outstanding	76,951	74,718
Stock options and other share-based awards	'	2,201
Dilutive potential common shares	76,951	76,919
Diluted (loss) earnings per share (in Dollars per share)	($0.25)	$0.10
Weighted average common shares outstanding	76,951	74,718
Basic (loss) earnings per share (in Dollars per share)	($0.25)	$0.10

Note_10_Concentrations_Details

Note 10 - Concentrations (Details) - Revenue Concentration, Product Lines (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	$113,733	$121,459
Test Operations [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	89,525	95,117
Network Visibility Solutions [Member]	'	'
Segment Reporting, Revenue Reconciling Item [Line Items]	'	'
Revenues	$24,208	$26,342

Note_10_Concentrations_Details1

Note 10 - Concentrations (Details) - Revenue Concentration, Customers (Sales Revenue, Goods, Net [Member], Customer Concentration Risk [Member])	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Customer A [Member]	'		'
Concentration Risk [Line Items]	'		'
Customer	'	[1]	18.60%
Customer B [Member]	'		'
Concentration Risk [Line Items]	'		'
Customer	10.30%		11.50%
[1]	Less than 10%

Note_10_Concentrations_Details2

Note 10 - Concentrations (Details) - Accounts Receivable Concentrations (Customer B [Member], Accounts Receivable [Member], Customer Concentration Risk [Member])	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Customer B [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]	'	'
Concentration Risk [Line Items]	'	'
Customer B	12.00%	'	[1]
[1]	Less than 10%

Note_10_Concentrations_Details3

Note 10 - Concentrations (Details) - Geographic Concentration (Sales Revenue, Net [Member], Geographic Concentration Risk [Member])	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
International [Member]	'	'
Note 10 - Concentrations (Details) - Geographic Concentration [Line Items]	'	'
Percentage of total revenue	41.00%	37.80%
JAPAN	'	'
Note 10 - Concentrations (Details) - Geographic Concentration [Line Items]	'	'
Percentage of total revenue	11.40%	12.40%

Note_10_Concentrations_Details4

Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net [Line Items]	'	'
Property and equipment, net	$36,479	$35,932
UNITED STATES	'	'
Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net [Line Items]	'	'
Property and equipment, net	23,312	22,614
INDIA	'	'
Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net [Line Items]	'	'
Property and equipment, net	4,962	5,300
ROMANIA	'	'
Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net [Line Items]	'	'
Property and equipment, net	4,891	4,715
Other Countries [Member]	'	'
Note 10 - Concentrations (Details) - Geographical Locations of Property, Equipment, Net [Line Items]	'	'
Property and equipment, net	$3,314	$3,303

Note_11_Fair_Value_Measurement2

Note 11 - Fair Value Measurements (Details) - Financial Assets Carried at Fair Value (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Cash equivalents:	'	'
Investments	$55,265	$51,507
Total financial assets	59,554	57,435
Fair Value, Inputs, Level 1 [Member] | Cash Equivalents [Member] | Money Market Funds [Member]	'	'
Cash equivalents:	'	'
Cash equivalents	290	30
Fair Value, Inputs, Level 1 [Member]	'	'
Cash equivalents:	'	'
Total financial assets	290	30
Fair Value, Inputs, Level 2 [Member] | Cash Equivalents [Member] | Corporate Debt Securities [Member]	'	'
Cash equivalents:	'	'
Cash equivalents	3,999	5,898
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | Corporate Debt Securities [Member]	'	'
Cash equivalents:	'	'
Investments	25,752	19,765
Fair Value, Inputs, Level 2 [Member] | Short-term Investments [Member] | US Treasury and Government [Member]	'	'
Cash equivalents:	'	'
Investments	29,513	31,742
Fair Value, Inputs, Level 2 [Member]	'	'
Cash equivalents:	'	'
Total financial assets	59,264	57,405
Cash Equivalents [Member] | Money Market Funds [Member]	'	'
Cash equivalents:	'	'
Cash equivalents	290	30
Cash Equivalents [Member] | Corporate Debt Securities [Member]	'	'
Cash equivalents:	'	'
Cash equivalents	3,999	5,898
Short-term Investments [Member] | Corporate Debt Securities [Member]	'	'
Cash equivalents:	'	'
Investments	25,752	19,765
Short-term Investments [Member] | US Treasury and Government [Member]	'	'
Cash equivalents:	'	'
Investments	$29,513	$31,742

Note_13_Income_Taxes_Details

Note 13 - Income Taxes (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
Note 13 - Income Taxes (Details) [Line Items]	'	'
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Goodwill	$26.90	'
Deferred Tax Liabilities, Net, Current	0	0
Prepaid Expenses and Other Current Assets [Member]	'	'
Note 13 - Income Taxes (Details) [Line Items]	'	'
Deferred Tax Assets, Net of Valuation Allowance, Current	14.3	14
Other Assets [Member]	'	'
Note 13 - Income Taxes (Details) [Line Items]	'	'
Deferred Tax Assets, Net, Noncurrent	7	19.8
Other Liabilities [Member]	'	'
Note 13 - Income Taxes (Details) [Line Items]	'	'
Deferred Tax Liabilities, Net, Noncurrent	$1.40	$1.40

Note_14_Subsequent_Events_Deta

Note 14 - Subsequent Events (Details) (Subsequent Event [Member], USD $)	Aug. 01, 2014	Aug. 01, 2014	Aug. 21, 2014	Aug. 21, 2014	Aug. 21, 2014	Aug. 21, 2014
	Scenario, Forecast [Member]	Scenario, Forecast [Member]	Chief Executive Officer [Member]	Chief Executive Officer [Member]	Minimum [Member]	Maximum [Member]
	Minimum [Member]	Maximum [Member]	Amended and Restated 2008 Equity Incentive Plan [Member]		Chief Executive Officer [Member]	Chief Executive Officer [Member]
Note 14 - Subsequent Events (Details) [Line Items]	'	'	'	'	'	'
Restructuring and Related Cost, Number of Positions Eliminated, Inception to Date Percent	5.00%	6.00%	'	'	'	'
Restructuring and Related Cost, Expected Cost	$3,500,000	$4,500,000	'	'	'	'
Expected Compensation to be Paid Upon Commencement of Employment, Annual Base Salary	'	'	'	650,000	'	'
Expected Compensation to be Paid Upon Commencement of Employment, Guaranteed Cash Bonus	'	'	'	500,000	'	'
Expected Compensation to be Paid Upon Commencement of Employment, Additional Cash Bonus	'	'	'	$2,400,000	'	'
Expected Compensation to be Paid Within 30 Days of Commencement of Employment, Non-Statutory Stock Options (in Shares)	'	'	700,000	'	'	'
Expected Option Equivalents to be Granted in 2015 (in Shares)	'	'	'	'	300,000	400,000