Ruckus Wireless (RKUS) 10-Q 1 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	3 Months Ended
	Mar. 31, 2015	Apr. 23, 2015
Entity [Abstract]
Entity Registrant Name	RUCKUS WIRELESS INC
Entity Central Index Key	1294016
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		86,562,761

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$46,267	$56,083
Short-term investments	147,550	142,706
Accounts receivable, net of allowance for doubtful accounts of $800 as of March 31, 2015 and December 31, 2014	57,121	59,553
Inventories	25,143	21,064
Deferred costs	2,463	4,414
Deferred tax assets	6,208	6,205
Prepaid expenses and other current assets	6,191	5,367
Total current assets	290,943	295,392
Property and equipment, net	17,572	13,636
Goodwill	9,945	9,945
Intangible assets, net	6,646	7,351
Non-current deferred tax asset	23,185	21,166
Restricted cash	5,000	5,000
Other assets	1,478	1,504
Total assets	354,769	353,994
Current liabilities:
Accounts payable	22,152	23,538
Accrued compensation	12,569	13,765
Accrued liabilities	6,740	5,282
Deferred revenue	30,045	39,231
Total current liabilities	71,506	81,816
Non-current deferred revenue	10,932	10,554
Non-current deferred tax liabilities	410	596
Other non-current liabilities	1,410	1,379
Total liabilities	84,258	94,345
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.001 par value; 250,000 shares authorized as of March 31, 2015 and December 31, 2014; 86,349 and 85,110 shares issued and outstanding at March 31, 2015 and December 31, 2014, respectively	86	85
Additional paid-in capital	284,624	273,276
Accumulated other comprehensive loss	-11	-97
Accumulated deficit	-14,188	-13,615
Total stockholders’ equity	270,511	259,649
Total liabilities and stockholders’ equity	$354,769	$353,994

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Per Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$800	$800
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	250,000	250,000
Common Stock, Shares, Issued	86,349	85,110
Common stock, shares outstanding	86,349	85,110

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Revenue:
Product	$75,297	$70,075
Service	6,781	4,977
Total revenue	82,078	75,052
Cost of revenue:
Product	23,231	21,496
Service	3,542	2,759
Total cost of revenue	26,773	24,255
Gross profit	55,305	50,797
Operating expenses:
Research and development	21,296	18,139
Sales and marketing	26,078	23,270
General and administrative	9,434	8,437
Total operating expenses	56,808	49,846
Operating income (loss)	-1,503	951
Interest income	141	46
Other expense, net	-78	-26
Income (loss) before income taxes	-1,440	971
Income tax expense (benefit)	-867	698
Net income (loss)	($573)	$273
Net income (loss) per share:
Basic (USD per share)	($0.01)	$0
Diluted (USD per share)	($0.01)	$0
Weighted average number of shares outstanding, basic (in shares)	85,637	81,277
Weighted average number of shares outstanding, diluted (in shares)	85,637	93,311

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	($573)	$273
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on short-term investments	85	-6
Comprehensive income (loss)	($488)	$267

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income (loss)	($573)	$273
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	2,833	1,916
Provision for doubtful accounts	0	400
Stock-based compensation	7,322	6,346
Amortization of investment premiums, net of accretion of purchase discounts	601	321
Deferred income taxes	-1,271	420
Excess tax benefit from employee stock incentive plans	-989	-952
Other	10	0
Changes in operating assets and liabilities:
Accounts receivable	2,432	-5,565
Inventories	-4,079	-664
Deferred costs	1,951	654
Prepaid expenses and other current assets	-918	-70
Other assets	93	59
Accounts payable	-4,209	-1,121
Accrued compensation	-1,196	1,751
Accrued liabilities	1,489	1,624
Deferred revenue	-8,808	-1,831
Net cash provided by (used in) operating activities	-5,312	3,561
Cash flows from investing activities
Purchase of investments	-30,987	-42,687
Proceeds from the maturity of investments	25,774	26,603
Purchase of property and equipment	-3,251	-2,185
Increase in facility lease deposits	-67	0
Net cash used in investing activities	-8,531	-18,269
Cash flows from financing activities:
Proceeds from exercise of stock options	3,038	2,241
Excess tax benefit from employee stock incentive plans	989	952
Net cash provided by financing activities	4,027	3,193
Net decrease in cash and cash equivalents	-9,816	-11,515
Cash and cash equivalents at beginning of period	56,083	91,282
Cash and cash equivalents at end of period	46,267	79,767
Non-cash investing and financing activities
Purchases of property and equipment recorded in accounts payable and accrued liabilities	$3,914	$574

DESCRIPTION_OF_BUSINESS_AND_SU

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	Description of Business— Ruckus Wireless, Inc. (“Ruckus”) is a global supplier of advanced, carrier-class Wi-Fi solutions. Ruckus’ solutions, which are called Smart Wi-Fi, are used by service providers and enterprises to solve a range of network capacity, coverage and reliability challenges associated with increasing wireless traffic demands created by the growth in the number of users equipped with more powerful smart wireless devices using increasingly data rich applications and services. Ruckus markets and sells its products and technology directly and indirectly through a network of channel partners to a variety of service providers and enterprises around the world. Its Smart Wi-Fi solutions offer carrier-class features and functionality such as enhanced reliability, consistent performance, extended range and massive scalability. Ruckus’ products include high capacity, high-speed hardware gateways, controllers, wireless bridges and indoor and outdoor access points, software platforms providing gateway, controller and reporting, analytics and management solutions, and unique Wi-Fi-related cloud services, such as location-based positioning (“LBS”) and public access. These hardware and software products and cloud services incorporate various elements of Ruckus’ proprietary technologies, including Smart Radio, SmartCast, SmartMesh, SmartCell and Smart Scaling, to enable high performance in a variety of challenging operating environments.
	Basis of Presentation— The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in Ruckus’ Annual Report on Form 10-K for the year ended December 31, 2014, filed on February 25, 2015.
	The condensed consolidated balance sheet as of December 31, 2014, included herein, was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by GAAP.
	In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year 2015 or any future period.
	Principles of Consolidation— The condensed financial statements include the accounts of Ruckus and its wholly owned subsidiaries (collectively, the “Company”). All intercompany balances and transactions have been eliminated in consolidation.
	Use of Estimates— The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates and assumptions made by management include the determination of revenue recognition, inventory, goodwill and intangible asset valuation, accounting for income taxes, stock-based compensation and warranty liability. Management bases its estimates on historical experience and also on assumptions that it believes are reasonable. Actual results could materially differ from those estimates.
	Summary of Significant Accounting Policies— There have been no material changes to our significant accounting policies as compared to those described in our Annual Report on Form 10-K for the year ended December 31, 2014.
	Recent Accounting Pronouncements— In May 2014, the Financial Accounting Standard Board (“FASB”) and International Accounting Standards Board (“IASB”) issued accounting standards update (“ASU”) 2014-09, Revenue from Contracts with Customers, a converged standard on revenue recognition. Some of the main areas of transition to the new standard include, among others, transfer of control (revenue is recognized when a customer obtains control of a good or service), allocation of transaction price based on relative standalone selling price (entities that sell multiple goods or services in a single arrangement must allocate the consideration to each of those goods or services), contract costs (entities sometimes incur costs, such as sales commissions or mobilization activities, to obtain or fulfill a contract), and disclosures (extensive disclosures are required to provide greater insight into both revenue that has been recognized, and revenue that is expected to be recognized in the future from existing contracts). Following the tentative decision by the FASB to defer the effective date, it is expected that the accounting standard will be effective for the Company beginning in its first quarter of 2018, with early adoption permitted, using one of two methods of adoption: (i) retrospective to each prior reporting period presented, with the option to elect certain practical expedients as defined within the standard; or (ii) retrospective with the cumulative effect of initially applying the standard recognized at the date of initial application inclusive of certain additional disclosures. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial position, results of operations and cash flows.
	Concentrations of Credit Risk and Significant Customers— Financial instruments that subject the Company to significant concentrations of credit risk primarily consist of cash, cash equivalents, short-term investments and accounts receivable. The Company invests only in high credit quality instruments and maintains its cash, cash equivalents and short-term investments in fixed income securities. Management believes that the financial institutions that hold the Company’s investments are financially sound and, accordingly, are subject to minimal credit risk. Deposits held with banks may exceed the amount of insurance provided on such deposits. The Company’s accounts receivable are primarily derived from distributors and service providers located in the Americas, Europe, and Asia Pacific. The Company generally does not require its customers to provide collateral to support accounts receivable. To reduce credit risk, management performs ongoing credit evaluations of its customers’ financial condition. The Company has recorded an allowance for doubtful accounts for those receivables management has determined to not be collectible.
	The percentages of revenue from individual customers totaling greater than 10% of total consolidated revenue were as follows:
		Three Months Ended March 31,
		2015		2014
	Channel partner A	13.2	%	14.8	%
	Channel partner B	13	%	*
	Channel partner C	10.2	%	12.9	%
	Channel partner D	*		11.9	%
	* Less than 10%
	No single end-customer accounted for more than 10% of total consolidated revenue.
	The percentage of receivables from individual customers totaling greater than 10% of total consolidated accounts receivable were as follows:
		March 31,		December 31,
		2015		2014
	Channel partner D	12	%	12.5	%

FAIR_VALUE_DISCLOSURE

FAIR VALUE DISCLOSURE	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURE	FAIR VALUE DISCLOSURE
	Assets and liabilities recorded at fair value in the condensed consolidated financial statements are categorized based upon the level of judgment associated with the inputs used to measure their fair value. The Company categorizes its financial instruments into a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).
	A financial instrument’s level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. There were no transfers between levels during the three months ended March 31, 2015. Hierarchical levels that are directly related to the amount of subjectivity associated with the inputs to the valuation of these assets or liabilities are as follows:
	Level 1		Quoted prices (unadjusted) in active markets that are accessible at the measurement date for identical assets or liabilities.
	Level 2		Observable prices that are based on inputs not quoted on active markets, but corroborated by market data.
	Level 3		Unobservable inputs are used when little or no market data is available.
	The Company’s assets that were measured at fair value by level within the fair value hierarchy were as follows (in thousands):
		March 31, 2015
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents:
	Money market funds	$	1,088	$	1,088	$	—	$	—
	Short-term investments:
	Corporate debt securities	121,224		—		121,224		—
	U.S. government agency securities	26,326		—		26,326		—
	Total assets measured and recorded at fair value	$	148,638	$	1,088	$	147,550	$	—
		December 31, 2014
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents:
	Money market funds	$	2,771	$	2,771	$	—	$	—
	Corporate debt securities	3,000		—		3,000		—
	Short-term investments:
	Corporate debt securities	118,323		—		118,323		—
	U.S. government agency securities	24,383		—		24,383		—
	Total assets measured and recorded at fair value	$	148,477	$	2,771	$	145,706	$	—

INVESTMENTS

INVESTMENTS	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
INVESTMENTS	SHORT-TERM INVESTMENTS
	Short-term investments consisted of the following (in thousands):
		March 31, 2015
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate debt securities	$	121,254	$	34		$	(64	)	$	121,224
	U.S. government agency securities	26,314		14			(2		)	26,326
	Total short-term investments	$	147,568	$	48		$	(66	)	$	147,550
		December 31, 2014
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate debt securities	$	118,470	$	—		$	(147	)	$	118,323
	U.S. government agency securities	24,392		4			(13		)	24,383
	Total short-term investments	$	142,862	$	4		$	(160	)	$	142,706
	The gross realized gains and losses related to the Company’s short-term investments were not material for the three months ended March 31, 2015 and 2014.
	The cost basis and fair value of the short-term investments by contractual maturity consist of the following (in thousands):
		31-Mar-15					December 31, 2014
		Amortized Cost		Fair Value			Amortized Cost			Fair Value
	One year or less	$	114,167	$	114,119		$	114,231		$	114,113
	Over one year and less than two years	33,401		33,431			28,631			28,593
	Total short-term investments	$	147,568	$	147,550		$	142,862		$	142,706
	Short-term investments in an unrealized loss position consisted of the following (in thousands):
		March 31, 2015					December 31, 2014
		Less Than 12 Months
		Fair Value		Unrealized Loss			Fair Value			Unrealized Loss
	Corporate debt securities	$	79,341	$	(64	)	$	105,187		$	(147	)
	U.S. government agency securities	5,677		(2		)	15,773			(13		)
	Total short-term investments	$	85,018	$	(66	)	$	120,960		$	(160	)
	As of March 31, 2015 and December 31, 2014, no short-term investments were in a continuous unrealized loss position for more than twelve months. The Company does not intend to sell any of these investments, and it is not more likely than not, that the Company would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity.

GOODWILL_AND_INTANGIBLES_ASSET

GOODWILL AND INTANGIBLES ASSETS	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	GOODWILL AND INTANGIBLE ASSETS
	Intangible assets consisted of the following (in thousands, except years):
		Gross Carrying		Accumulated			Net		Weighted Average
		Amount		Amortization			Carrying		Remaining Life
							Amount
	31-Mar-15
	Purchased technology	$	12,600	$	(5,954	)	$	6,646	2.6 years
	31-Dec-14
	Purchased technology	$	12,600	$	(5,249	)	$	7,351	2.8 years
	The following table presents the estimated future amortization expense of intangible assets as of March 31, 2015 (in thousands):
	Year ending December 31,	Amount
	2015 (remaining nine months)	$	2,115
	2016	2,531
	2017	1,500
	2018	500
	Total amortization	$	6,646
	The Company had goodwill of $9.9 million as of March 31, 2015 and December 31, 2014. No impairment has been recognized related to the goodwill balance.

DEFERRED_REVENUE

DEFERRED REVENUE	3 Months Ended
	Mar. 31, 2015
Deferred Revenue Disclosure [Abstract]
DEFERRED REVENUE	DEFERRED REVENUE
	Deferred revenue consisted of the following (in thousands):
		March 31,		December 31,
		2015		2014
	Product	$	13,222	$	22,900
	Service	27,755		26,885
	Total deferred revenue	$	40,977	$	49,785
	Reported as:
	Current	$	30,045	$	39,231
	Non-current	10,932		10,554
	Total deferred revenue	$	40,977	$	49,785
	Deferred product revenue relates to arrangements where not all revenue recognition criteria have been met. Deferred service revenue represents support contracts and software licensed as a service (“SaaS”) billed in advance and revenue is recognized ratably over the service period, typically one to five years.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES
	Operating Leases—The Company’s primary facilities are located in Sunnyvale, California, Shenzhen, China, Singapore, Taipei, Taiwan, Bangalore, India and Woodburn Green, United Kingdom and are leased under non-cancelable operating lease arrangements.
	Future minimum lease payments under non-cancelable operating leases were as follows (in thousands):
	Years ending December 31,	Amount
	2015 (remaining nine months)	$	3,235
	2016	3,625
	2017	3,211
	2018	2,861
	2019	2,566
	Thereafter	7,489
	Operating lease obligations	$	22,987
	Litigation— The Company is involved in legal proceedings, claims, and litigation arising in the ordinary course of business. Management is not currently aware of any matters that it expects will have a material adverse effect on the consolidated financial position, results of operations, or cash flows of the Company.
	For the three months ended March 31, 2014, the Company settled several patent litigation claims for a net gain of $0.8 million, which is included in general and administrative expense in the condensed consolidated statements of operations. For the three months ended March 31, 2015, the Company did not have any legal settlements.
	Purchase Commitments— As of March 31, 2015, the Company had current purchase commitments of $12.9 million for inventory and specific contractual services.
	Indemnification Agreements— The Company indemnifies its directors for certain events or occurrences, subject to certain limits, while the director is or was serving at the Company’s request in such capacity. The term of the indemnification period is for the director’s term of service. The Company may terminate the indemnification agreements with its directors upon the termination of their services as directors of the Company, but termination will not affect claims for indemnification related to events occurring prior to the effective date of termination. The maximum amount of potential future indemnification is unlimited; however, the Company has a director insurance liability policy that limits its exposure. The Company believes the fair value of these indemnification agreements is minimal. The Company has also entered into customary indemnification agreements with each of its officers.
	The Company indemnifies its channel partners against certain claims alleging that the Company’s products (excluding custom products and/or custom support) infringe a patent, copyright, trade secret, or trademark, provided that a channel partner promptly notifies the Company in writing of the claim and such channel partner cooperates with the Company and grants the Company the authority to control the defense and any related settlement.
	The Company has not recorded any liabilities for these agreements as of March 31, 2015 and December 31, 2014.
	Reimbursement of Penalties— As of March 31, 2015 and December 31, 2014, the Company held $5.0 million in escrow to secure an indemnification agreement. If triggered, the Company will indemnify a channel partner for reimbursement of penalties assessed under the Information Technology Act of India (“IT Act”). The IT Act specifies penalties for network service providers in the event of illegal or unauthorized use of computers, computer systems and data stored therein. In the event that Ruckus equipment is the cause of a network service provider breach, the Company is required to indemnify the channel partner, without limitation to the amount, for penalties reimbursed by the channel partner to the network service provider under the IT Act. The indemnification period is six years beginning from April 2013. To date no claims have been made under the IT Act, for which the Company would be potentially liable.
	Warranties— The Company offers a limited lifetime hardware warranty on its indoor WLAN products and a limited warranty for all other hardware products for a period of up to one year. The Company estimates the costs that may be incurred under its warranties and records a liability for products sold as a charge to cost of revenue. Estimates of future warranty costs are largely based on historical experience of product failure rates and material usage incurred in correcting product failures. The Company periodically assesses the adequacy of its recorded warranty liability and adjusts the amounts as necessary.
	The warranty liability is included as a component of accrued liabilities in the accompanying condensed consolidated balance sheets. Changes in the warranty liability were as follows (in thousands):
		Three Months Ended March 31,
		2015			2014
	Balance at beginning of period	$	803		$	1,038
	Changes in existing warranty	(82		)	93
	Warranty expense	390			256
	Obligations fulfilled	(187		)	(491		)
	Balance at end of period	$	924		$	896

EQUITY_AWARD_PLANS

EQUITY AWARD PLANS	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
EQUITY AWARD PLANS	EQUITY AWARD PLANS
	Stock Option Activity
	The following table summarizes the outstanding stock option activity and a summary of information related to stock options (in thousands, except per share amounts and years):
		Common Stock Options Outstanding
		Number of		Weighted				Weighted		Aggregate
		Shares		Average				Average		Intrinsic
				Exercise Price Per Share				Remaining		Value
								Contractual Life (Years)
	Balance, December 31, 2014	17,042		$	5.6			6.7		$	119,782
	Options granted	35		10.72
	Options exercised	-1,122		2.71
	Options forfeited	-259		8.49
	Balance, March 31, 2015	15,696		$	5.78			6.5		$	118,775
	Options exercisable as of March 31, 2015	11,087		$	4.06			5.8		$	100,987
	Options vested and expected to vest as of March 31, 2015	15,525		$	5.71			6.5		$	118,391
	The weighted average grant date fair value of stock options was approximately $5.86 and $8.04 per share for the three months ended March 31, 2015 and 2014, respectively.
	The total intrinsic value of options exercised was approximately $9.9 million and $13.3 million for the three months ended March 31, 2015 and 2014, respectively.
	Restricted Stock Unit Activity
	The following table summarizes the outstanding activity of Restricted Stock Units (“RSUs”) and a summary of information related to RSUs (in thousands, except per share amounts and years):
		Restricted Stock Units Outstanding
		Number of Shares			Weighted				Weighted		Aggregate
					Average				Average		Intrinsic
					Grant Date Fair Value				Remaining		Value
					Per Share				Contractual Life (Years)
	Balance, December 31, 2014	2,825			$	13.65			1.7		$	33,955
	RSUs granted	138			10.76
	RSUs vested	(116	)		20.23
	RSUs forfeited	(98	)		14.98
	Balance, March 31, 2015	2,749			$	13.18			1.6		$	35,376
	The following table summarizes the stock activity and the total number of shares available for grant under the Company's Amended & Restated 2012 Equity Incentive Plan as of March 31, 2015 (in thousands):
		Number of
		Shares
	Balance, December 31, 2014	9,398
	Additional shares reserved for issuance	4,256
	Options granted	(35	)
	Options forfeited	259
	RSUs granted	(138	)
	RSUs forfeited	98
	Balance, March 31, 2015	13,838
	Fair Value Disclosures
	Employee Stock Options
	The fair value of each option is estimated on the date of grant using the Black-Scholes model. The following table summarizes the weighted average assumptions relating to the Company's stock options:
		Three Months Ended March 31,
		2015			2014
	Volatility	57.8	%		64.3	%
	Expected term (years)	6.1			6.1
	Risk-free interest rate	1.6	%		2	%
	Dividend yield	—			—
	Employee Stock Purchase Plan
	There were no stock purchase rights granted under the Employee Stock Purchase Plan (“ESPP”) during the three months ended March 31, 2015 and 2014.
	Stock-based Compensation Expense
	The following table summarizes the stock-based compensation expense recorded in the condensed consolidated statements of operations (in thousands):
		Three Months Ended March 31,
		2015				2014
	Cost of revenue	$	316			$	245
	Research and development	2,722				2,096
	Sales and marketing	1,617				1,615
	General and administrative	2,667				2,390
	Total stock-based compensation	$	7,322			$	6,346
	At March 31, 2015, the total unrecognized stock-based compensation expense under the Company's stock plans was $55.0 million, net of estimated forfeitures. The unamortized expense will be recognized over a weighted-average period of 2.1 years.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE
	Basic net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding, including potential dilutive common shares assuming the dilutive effect of outstanding stock awards using the treasury stock method. Under the treasury stock method, the amount the employee must pay for exercising stock awards, the amount of compensation cost for future service that the Company has not yet recognized, and the amount of tax benefits that would be recorded in additional paid-in capital when the award becomes deductible, are collectively assumed to be used to repurchase shares.
	The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data):
		Three Months Ended March 31,
		2015				2014
	Numerator:
	Net income (loss)	$	(573	)		$	273
	Denominator:
	Weighted-average shares used in computing basic net income (loss) per share	85,637				81,277
	Weighted-average effect of potentially dilutive shares:
	Employee stock options	—				11,920
	RSUs and ESPP	—				114
	Diluted	85,637				93,311
	Net income (loss) per share:
	Basic	$	(0.01	)		$	0
	Diluted	$	(0.01	)		$	0
	The following table summarizes the weighted average outstanding stock awards that were excluded from the diluted per share calculation because to include them would have been anti-dilutive for the period (in thousands):
		Three Months Ended March 31,
		2015			2014
	Stock options	16,435			2,305
	RSUs and ESPP	3,355			745
	Total	19,790			3,050

INCOME_TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES
	Income tax benefit was $0.9 million for the three months ended March 31, 2015 and income tax expense was $0.7 million for the three months ended March 31, 2014. The effective tax rate exceeded the statutory rate for the periods primarily due to certain non-deductible stock-based compensation expenses.
	The Company evaluates the realization of its deferred tax assets based on the expiration period of the asset, projections of future taxable income in the relevant tax jurisdiction, the effect of tax planning strategies, and other factors. Both positive and negative evidence is weighed using significant judgment. Based on an evaluation of these factors, the Company believes that the realization of its deferred tax assets is more likely than not and, therefore, a valuation allowance against its deferred tax assets is not required. In future periods, positive and negative evidence can change due to revised projections of future taxable income in the relevant jurisdictions and other factors listed above. If future circumstances require a valuation allowance to be recorded, there would be an increase in tax expense in the consolidated statements of operations without any change in net cash provided by operating activities in the consolidated statements of cash flows.

SEGMENT_INFORMATION

SEGMENT INFORMATION	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION
	The Company operates in one industry segment selling gateways, controllers and access points along with related software and services.
	Operating segments are defined as components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision maker, or decision making group, in deciding how to allocate resources and in assessing performance. The Company’s chief operating decision maker is its chief executive officer. The Company’s chief executive officer reviews financial information presented on a consolidated basis for purposes of allocating resources and evaluating financial performance. The Company has one business activity, and there are no segment managers who are held accountable for operations, operating results and plans for products or components below the consolidated unit level. Accordingly, the Company reports as a single operating segment. The Company and its chief executive officer evaluate performance based primarily on revenue in the geographic locations in which the Company operates. Revenue is attributed by geographic location based on the bill-to location of the Company’s customers.
	The following presents total revenue by geographic region (in thousands):
		Three Months Ended March 31,
		2015		2014
	Americas:
	United States	$	38,966	$	38,475
	Other Americas	1,773		2,012
	Total Americas	40,739		40,487
	EMEA:
	Total EMEA	21,973		20,052
	APAC:
	Total APAC	19,366		14,513
	Total revenue	$	82,078	$	75,052
	As of March 31, 2015, the Company had property and equipment, net of $12.4 million, $0.6 million and $4.6 million located in the Americas, EMEA, and APAC respectively.

DESCRIPTION_OF_BUSINESS_AND_SU1

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business— Ruckus Wireless, Inc. (“Ruckus”) is a global supplier of advanced, carrier-class Wi-Fi solutions. Ruckus’ solutions, which are called Smart Wi-Fi, are used by service providers and enterprises to solve a range of network capacity, coverage and reliability challenges associated with increasing wireless traffic demands created by the growth in the number of users equipped with more powerful smart wireless devices using increasingly data rich applications and services. Ruckus markets and sells its products and technology directly and indirectly through a network of channel partners to a variety of service providers and enterprises around the world. Its Smart Wi-Fi solutions offer carrier-class features and functionality such as enhanced reliability, consistent performance, extended range and massive scalability. Ruckus’ products include high capacity, high-speed hardware gateways, controllers, wireless bridges and indoor and outdoor access points, software platforms providing gateway, controller and reporting, analytics and management solutions, and unique Wi-Fi-related cloud services, such as location-based positioning (“LBS”) and public access. These hardware and software products and cloud services incorporate various elements of Ruckus’ proprietary technologies, including Smart Radio, SmartCast, SmartMesh, SmartCell and Smart Scaling, to enable high performance in a variety of challenging operating environments.
Basis of Presentation	Basis of Presentation— The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and applicable rules and regulations of the Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in Ruckus’ Annual Report on Form 10-K for the year ended December 31, 2014, filed on February 25, 2015.
	The condensed consolidated balance sheet as of December 31, 2014, included herein, was derived from the audited financial statements as of that date, but does not include all disclosures including notes required by GAAP.
	In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all normal recurring adjustments necessary to present fairly the financial position, results of operations, and cash flows for the interim periods, but are not necessarily indicative of the results of operations to be anticipated for the full year 2015 or any future period.
Principles of Consolidation	Principles of Consolidation— The condensed financial statements include the accounts of Ruckus and its wholly owned subsidiaries (collectively, the “Company”). All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates— The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates and assumptions made by management include the determination of revenue recognition, inventory, goodwill and intangible asset valuation, accounting for income taxes, stock-based compensation and warranty liability. Management bases its estimates on historical experience and also on assumptions that it believes are reasonable. Actual results could materially differ from those estimates.
Recent Accounting Pronouncements	Recent Accounting Pronouncements— In May 2014, the Financial Accounting Standard Board (“FASB”) and International Accounting Standards Board (“IASB”) issued accounting standards update (“ASU”) 2014-09, Revenue from Contracts with Customers, a converged standard on revenue recognition. Some of the main areas of transition to the new standard include, among others, transfer of control (revenue is recognized when a customer obtains control of a good or service), allocation of transaction price based on relative standalone selling price (entities that sell multiple goods or services in a single arrangement must allocate the consideration to each of those goods or services), contract costs (entities sometimes incur costs, such as sales commissions or mobilization activities, to obtain or fulfill a contract), and disclosures (extensive disclosures are required to provide greater insight into both revenue that has been recognized, and revenue that is expected to be recognized in the future from existing contracts). Following the tentative decision by the FASB to defer the effective date, it is expected that the accounting standard will be effective for the Company beginning in its first quarter of 2018, with early adoption permitted, using one of two methods of adoption: (i) retrospective to each prior reporting period presented, with the option to elect certain practical expedients as defined within the standard; or (ii) retrospective with the cumulative effect of initially applying the standard recognized at the date of initial application inclusive of certain additional disclosures. The Company is currently evaluating the impact of this accounting standard update on its consolidated financial position, results of operations and cash flows.
Concentrations of Credit Risk and Significant Customers	Concentrations of Credit Risk and Significant Customers— Financial instruments that subject the Company to significant concentrations of credit risk primarily consist of cash, cash equivalents, short-term investments and accounts receivable. The Company invests only in high credit quality instruments and maintains its cash, cash equivalents and short-term investments in fixed income securities. Management believes that the financial institutions that hold the Company’s investments are financially sound and, accordingly, are subject to minimal credit risk. Deposits held with banks may exceed the amount of insurance provided on such deposits. The Company’s accounts receivable are primarily derived from distributors and service providers located in the Americas, Europe, and Asia Pacific. The Company generally does not require its customers to provide collateral to support accounts receivable. To reduce credit risk, management performs ongoing credit evaluations of its customers’ financial condition. The Company has recorded an allowance for doubtful accounts for those receivables management has determined to not be collectible.
	The percentages of revenue from individual customers totaling greater than 10% of total consolidated revenue were as follows:
		Three Months Ended March 31,
		2015		2014
	Channel partner A	13.2	%	14.8	%
	Channel partner B	13	%	*
	Channel partner C	10.2	%	12.9	%
	Channel partner D	*		11.9	%
	* Less than 10%
	No single end-customer accounted for more than 10% of total consolidated revenue.
	The percentage of receivables from individual customers totaling greater than 10% of total consolidated accounts receivable were as follows:
		March 31,		December 31,
		2015		2014
	Channel partner D	12	%	12.5	%

DESCRIPTION_OF_BUSINESS_AND_SU2

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Percentage of Revenue from Individual Customers	The percentages of revenue from individual customers totaling greater than 10% of total consolidated revenue were as follows:
		Three Months Ended March 31,
		2015		2014
	Channel partner A	13.2	%	14.8	%
	Channel partner B	13	%	*
	Channel partner C	10.2	%	12.9	%
	Channel partner D	*		11.9	%
	* Less than 10%
	No single end-customer accounted for more than 10% of total consolidated revenue.
	The percentage of receivables from individual customers totaling greater than 10% of total consolidated accounts receivable were as follows:
		March 31,		December 31,
		2015		2014
	Channel partner D	12	%	12.5	%

FAIR_VALUE_DISCLOSURE_Tables

FAIR VALUE DISCLOSURE (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Assets measured at fair value	The Company’s assets that were measured at fair value by level within the fair value hierarchy were as follows (in thousands):
		March 31, 2015
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents:
	Money market funds	$	1,088	$	1,088	$	—	$	—
	Short-term investments:
	Corporate debt securities	121,224		—		121,224		—
	U.S. government agency securities	26,326		—		26,326		—
	Total assets measured and recorded at fair value	$	148,638	$	1,088	$	147,550	$	—
		December 31, 2014
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Cash equivalents:
	Money market funds	$	2,771	$	2,771	$	—	$	—
	Corporate debt securities	3,000		—		3,000		—
	Short-term investments:
	Corporate debt securities	118,323		—		118,323		—
	U.S. government agency securities	24,383		—		24,383		—
	Total assets measured and recorded at fair value	$	148,477	$	2,771	$	145,706	$	—

INVESTMENTS_Tables

INVESTMENTS (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule of available-for-sale investments	Short-term investments consisted of the following (in thousands):
		March 31, 2015
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate debt securities	$	121,254	$	34		$	(64	)	$	121,224
	U.S. government agency securities	26,314		14			(2		)	26,326
	Total short-term investments	$	147,568	$	48		$	(66	)	$	147,550
		December 31, 2014
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate debt securities	$	118,470	$	—		$	(147	)	$	118,323
	U.S. government agency securities	24,392		4			(13		)	24,383
	Total short-term investments	$	142,862	$	4		$	(160	)	$	142,706
Investments classified by contractual maturity date	The cost basis and fair value of the short-term investments by contractual maturity consist of the following (in thousands):
		31-Mar-15					December 31, 2014
		Amortized Cost		Fair Value			Amortized Cost			Fair Value
	One year or less	$	114,167	$	114,119		$	114,231		$	114,113
	Over one year and less than two years	33,401		33,431			28,631			28,593
	Total short-term investments	$	147,568	$	147,550		$	142,862		$	142,706
Schedule of available-for-sale investments in unrealized loss position	Short-term investments in an unrealized loss position consisted of the following (in thousands):
		March 31, 2015					December 31, 2014
		Less Than 12 Months
		Fair Value		Unrealized Loss			Fair Value			Unrealized Loss
	Corporate debt securities	$	79,341	$	(64	)	$	105,187		$	(147	)
	U.S. government agency securities	5,677		(2		)	15,773			(13		)
	Total short-term investments	$	85,018	$	(66	)	$	120,960		$	(160	)

GOODWILL_AND_INTANGIBLES_ASSET1

GOODWILL AND INTANGIBLES ASSETS (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule intangible assets	Intangible assets consisted of the following (in thousands, except years):
		Gross Carrying		Accumulated			Net		Weighted Average
		Amount		Amortization			Carrying		Remaining Life
							Amount
	31-Mar-15
	Purchased technology	$	12,600	$	(5,954	)	$	6,646	2.6 years
	31-Dec-14
	Purchased technology	$	12,600	$	(5,249	)	$	7,351	2.8 years
Estimated future amortization of purchased intangible assets	The following table presents the estimated future amortization expense of intangible assets as of March 31, 2015 (in thousands):
	Year ending December 31,	Amount
	2015 (remaining nine months)	$	2,115
	2016	2,531
	2017	1,500
	2018	500
	Total amortization	$	6,646

DEFERRED_REVENUE_Tables

DEFERRED REVENUE (Tables)	3 Months Ended
	Mar. 31, 2015
Deferred Revenue Disclosure [Abstract]
Schedule of deferred revenue	Deferred revenue consisted of the following (in thousands):
		March 31,		December 31,
		2015		2014
	Product	$	13,222	$	22,900
	Service	27,755		26,885
	Total deferred revenue	$	40,977	$	49,785
	Reported as:
	Current	$	30,045	$	39,231
	Non-current	10,932		10,554
	Total deferred revenue	$	40,977	$	49,785

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum lease payments under non-cancellable operating leases	Future minimum lease payments under non-cancelable operating leases were as follows (in thousands):
	Years ending December 31,	Amount
	2015 (remaining nine months)	$	3,235
	2016	3,625
	2017	3,211
	2018	2,861
	2019	2,566
	Thereafter	7,489
	Operating lease obligations	$	22,987
Schedule of changes in warranty liability	The warranty liability is included as a component of accrued liabilities in the accompanying condensed consolidated balance sheets. Changes in the warranty liability were as follows (in thousands):
		Three Months Ended March 31,
		2015			2014
	Balance at beginning of period	$	803		$	1,038
	Changes in existing warranty	(82		)	93
	Warranty expense	390			256
	Obligations fulfilled	(187		)	(491		)
	Balance at end of period	$	924		$	896

EQUITY_AWARD_PLANS_Tables

EQUITY AWARD PLANS (Tables)	3 Months Ended
	Mar. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of stock options outstanding	The following table summarizes the outstanding stock option activity and a summary of information related to stock options (in thousands, except per share amounts and years):
		Common Stock Options Outstanding
		Number of		Weighted				Weighted		Aggregate
		Shares		Average				Average		Intrinsic
				Exercise Price Per Share				Remaining		Value
								Contractual Life (Years)
	Balance, December 31, 2014	17,042		$	5.6			6.7		$	119,782
	Options granted	35		10.72
	Options exercised	-1,122		2.71
	Options forfeited	-259		8.49
	Balance, March 31, 2015	15,696		$	5.78			6.5		$	118,775
	Options exercisable as of March 31, 2015	11,087		$	4.06			5.8		$	100,987
	Options vested and expected to vest as of March 31, 2015	15,525		$	5.71			6.5		$	118,391
Summary of restricted stock units outstanding	The following table summarizes the outstanding activity of Restricted Stock Units (“RSUs”) and a summary of information related to RSUs (in thousands, except per share amounts and years):
		Restricted Stock Units Outstanding
		Number of Shares			Weighted				Weighted		Aggregate
					Average				Average		Intrinsic
					Grant Date Fair Value				Remaining		Value
					Per Share				Contractual Life (Years)
	Balance, December 31, 2014	2,825			$	13.65			1.7		$	33,955
	RSUs granted	138			10.76
	RSUs vested	(116	)		20.23
	RSUs forfeited	(98	)		14.98
	Balance, March 31, 2015	2,749			$	13.18			1.6		$	35,376
Summary of stock activity and number of shares available for grant	The following table summarizes the stock activity and the total number of shares available for grant under the Company's Amended & Restated 2012 Equity Incentive Plan as of March 31, 2015 (in thousands):
		Number of
		Shares
	Balance, December 31, 2014	9,398
	Additional shares reserved for issuance	4,256
	Options granted	(35	)
	Options forfeited	259
	RSUs granted	(138	)
	RSUs forfeited	98
	Balance, March 31, 2015	13,838
Summary of stock options, valuation assumptions	The following table summarizes the weighted average assumptions relating to the Company's stock options:
		Three Months Ended March 31,
		2015			2014
	Volatility	57.8	%		64.3	%
	Expected term (years)	6.1			6.1
	Risk-free interest rate	1.6	%		2	%
	Dividend yield	—			—
Schedule of allocation of stock-based compensation expense	The following table summarizes the stock-based compensation expense recorded in the condensed consolidated statements of operations (in thousands):
		Three Months Ended March 31,
		2015				2014
	Cost of revenue	$	316			$	245
	Research and development	2,722				2,096
	Sales and marketing	1,617				1,615
	General and administrative	2,667				2,390
	Total stock-based compensation	$	7,322			$	6,346

EARNINGS_PER_SHARE_Tables

EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Schedule of calculation of basic and diluted net income (loss) per share	The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data):
		Three Months Ended March 31,
		2015				2014
	Numerator:
	Net income (loss)	$	(573	)		$	273
	Denominator:
	Weighted-average shares used in computing basic net income (loss) per share	85,637				81,277
	Weighted-average effect of potentially dilutive shares:
	Employee stock options	—				11,920
	RSUs and ESPP	—				114
	Diluted	85,637				93,311
	Net income (loss) per share:
	Basic	$	(0.01	)		$	0
	Diluted	$	(0.01	)		$	0
Summary of the outstanding redeemable convertible preferred stock, employee stock, employee stock options, RSUs and warrants excluded from the diluted per share calculation	The following table summarizes the weighted average outstanding stock awards that were excluded from the diluted per share calculation because to include them would have been anti-dilutive for the period (in thousands):
		Three Months Ended March 31,
		2015			2014
	Stock options	16,435			2,305
	RSUs and ESPP	3,355			745
	Total	19,790			3,050

SEGMENT_INFORMATION_Tables

SEGMENT INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule of total revenue by geographic region	The following presents total revenue by geographic region (in thousands):
		Three Months Ended March 31,
		2015		2014
	Americas:
	United States	$	38,966	$	38,475
	Other Americas	1,773		2,012
	Total Americas	40,739		40,487
	EMEA:
	Total EMEA	21,973		20,052
	APAC:
	Total APAC	19,366		14,513
	Total revenue	$	82,078	$	75,052

DESCRIPTION_OF_BUSINESS_AND_SU3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Concentration of Credit Risk and Significant Customers) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Revenue, Major Customer
Number of single end-customers	0
Revenues | Channel Partner A
Revenue, Major Customer
Significant customer, as a percentage	13.20%	14.80%
Revenues | Channel Partner B
Revenue, Major Customer
Significant customer, as a percentage	13.00%
Revenues | Channel Partner C
Revenue, Major Customer
Significant customer, as a percentage	10.20%	12.90%
Revenues | Channel Partner D
Revenue, Major Customer
Significant customer, as a percentage		11.90%
Accounts Receivables | Channel Partner D
Revenue, Major Customer
Significant customer, as a percentage	12.00%	12.50%

FAIR_VALUE_DISCLOSURE_Details

FAIR VALUE DISCLOSURE (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets measured and recorded at fair value	$148,638	$148,477
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	121,224	118,323
US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	26,326	24,383
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value	1,088	2,771
Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value		3,000
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets measured and recorded at fair value	1,088	2,771
Level 1 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	0	0
Level 1 | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	0	0
Level 1 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value	1,088	2,771
Level 1 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value		0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets measured and recorded at fair value	147,550	145,706
Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	121,224	118,323
Level 2 | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	26,326	24,383
Level 2 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value	0	0
Level 2 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value		3,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Total assets measured and recorded at fair value	0	0
Level 3 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	0	0
Level 3 | US Government Agencies Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Short-term investments, at fair value	0	0
Level 3 | Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value	0	0
Level 3 | Corporate debt securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents, at fair value		$0

INVESTMENTS_Details

INVESTMENTS (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis	$114,167	$114,231
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value	114,119	114,113
Available-for-sale Securities, Debt Maturities, Year Two, Amortized Cost Basis	33,401	28,631
Available-for-sale Securities, Debt Maturities, Year Two, Fair Value	33,431	28,593
Amortized Cost	147,568	142,862
Unrealized Gains	48	4
Unrealized Losses	-66	-160
Fair Value	147,550	142,706
Corporate debt securities
Schedule of Available-for-sale Securities
Amortized Cost	121,254	118,470
Unrealized Gains	34	0
Unrealized Losses	-64	-147
Fair Value	121,224	118,323
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities
Amortized Cost	26,314	24,392
Unrealized Gains	14	4
Unrealized Losses	-2	-13
Fair Value	$26,326	$24,383

INVESTMENTS_Continuous_Unreali

INVESTMENTS (Continuous Unrealized Losses) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities
Less than 12 months, Fair Value	$85,018	$120,960
Less than 12 months, Unrealized Loss	-66	-160
Corporate debt securities
Schedule of Available-for-sale Securities
Less than 12 months, Fair Value	79,341	105,187
Less than 12 months, Unrealized Loss	-64	-147
US Government Agencies Debt Securities [Member]
Schedule of Available-for-sale Securities
Less than 12 months, Fair Value	5,677	15,773
Less than 12 months, Unrealized Loss	($2)	($13)

GOODWILL_AND_INTANGIBLES_ASSET2

GOODWILL AND INTANGIBLES ASSETS (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, net	$6,646
Goodwill	9,945	9,945
Purchased technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	12,600	12,600
Accumulated amortization	-5,954	-5,249
Finite-lived intangible assets, net	$6,646	$7,351
Weighted average remaining useful life	2 years 7 months 10 days	2 years 10 months

GOODWILL_AND_INTANGIBLES_ASSET3

GOODWILL AND INTANGIBLES ASSETS (Future Amortization Expense) (Details) (USD $)	Mar. 31, 2015
In Thousands, unless otherwise specified
Estimated Future Amortization Expense By Fiscal Year Maturity
2015 (remaining nine months)	$2,115
2016	2,531
2017	1,500
2018	500
Finite-lived intangible assets, net	$6,646

DEFERRED_REVENUE_Details

DEFERRED REVENUE (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Deferred Revenue Arrangement [Line Items]
Deferred revenue	40,977	$49,785
Current	30,045	39,231
Noncurrent	10,932	10,554
Product
Deferred Revenue Arrangement [Line Items]
Deferred revenue	13,222	22,900
Services
Deferred Revenue Arrangement [Line Items]
Deferred revenue	27,755	$26,885
Services | Minimum
Deferred Revenue Arrangement [Line Items]
Typical service support period, minimum	1 year
Services | Maximum
Deferred Revenue Arrangement [Line Items]
Typical service support period, minimum	5 years

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Operating Leases, Purchase Commitments, and Litigation) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015
Operating Leases, Future Minimum Payments [Abstract]
2015 (remaining nine months)	$3,235,000
2016	3,625,000
2017	3,211,000
2018	2,861,000
2019	2,566,000
Thereafter	7,489,000
Operating lease obligation	22,987,000
Gain on settlement of several patent litigation claims	800,000
Current purchase commitments	$12,900,000

COMMITMENTS_AND_CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Product Liabilities) (Details) (USD $)	3 Months Ended		1 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Apr. 30, 2013	Dec. 31, 2014
Product Liability
Restricted cash for indemnity obligation	$5,000			$5,000
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning warranty liability	803	1,038
Changes in existing warranty	-82	93
Warranty expense	390	256
Obligations fulfilled	-187	-491
Ending warranty liability	$924	$896
Hardware other than Indoor WLAN Products
Product Liability
Standard product warranty term	1 year
Indemnification Agreement
Product Liability
Indemnification Period			6 years

EQUITY_AWARD_PLANS_Stock_Optio

EQUITY AWARD PLANS (Stock Option Activity) (Details) (Stock Options, USD $)	3 Months Ended		12 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Stock Options
Number of Shares
Beginning balance (shares)	17,042
Options granted (shares)	35
Options exercised (shares)	-1,122
Options forfeited (shares)	-259
Ending balance (shares)	15,696		17,042
Options exercisable (shares)	11,087
Options vested and expected to vest (shares)	15,525
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$5.60
Options granted (in dollars per share)	$10.72
Options exercised (in dollars per share)	$2.71
Options forfeited (in dollars per share)	$8.49
Ending balance (in dollars per share)	$5.78		$5.60
Options exercisable (in dollars per share)	$4.06
Options vested and expected to vest (in dollars per share)	$5.71
Weighted Average Remaining Contractual Life
Weighted Average Remaining Contractual Life	6 years 5 months 23 days		6 years 7 months 43 days
Options exercisable	5 years 9 months 1 day
Options vested and expected to vest	6 years 5 months 15 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$118,775,000		$119,782,000
Options exercisable	100,987,000
Options vested and expected to vest	118,391,000
Weighted average grant date fair value (in dollars per share)	$5.86	$8.04
Total intrinsic value of options exercised	$9,900,000	$13,300,000

EQUITY_AWARD_PLANS_Restricted_

EQUITY AWARD PLANS (Restricted Stock Units Activity) (Details) (RSU, USD $)	3 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
RSU
Number of Shares
Beginning balance (shares)	2,825
RSUs granted (shares)	138
RSUs exercised (shares)	-116
RSUs forfeited (shares)	-98
Ending balance (shares)	2,749	2,825
Weighted-Average Grant- Date Fair Value Per Share
Beginning balance (in dollars per share)	$13.65
RSUs granted (in dollars per share)	$10.76
RSUs vested (in dollars per share)	$20.23
RSUs forfeited (in dollars per share)	$14.98
Ending balance (in dollars per share)	$13.18	$13.65
RSU, Weighted Average Remaining Contractual Life	1 year 6 months 22 days	1 year 8 months 12 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$35,376	$33,955

EQUITY_AWARD_PLANS_Stock_Activ

EQUITY AWARD PLANS (Stock Activity and Number of Shares Available for Grant) (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015
Shares Available for Grant
Beginning balance (shares)	9,398
Additional shares reserved for issuance (shares)	4,256
Ending balance (shares)	13,838
RSU
Shares Available for Grant
RSUs granted (shares)	-138
RSUs forfeited (shares)	98
Stock Options
Shares Available for Grant
Options granted (shares)	-35
Options forfeited (shares)	259

EQUITY_AWARD_PLANS_Assumptions

EQUITY AWARD PLANS (Assumptions) (Details) (Stock Options)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Volatility	57.80%	64.30%
Expected term (years)	6 years 0 months 29 days	6 years 0 months 28 days
Risk-free interest rate	1.60%	2.00%
Dividend yield	0.00%	0.00%

EQUITY_AWARD_PLANS_Stockbased_

EQUITY AWARD PLANS (Stock-based Compensation Expense) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	$7,322,000	$6,346,000
Compensation cost not yet recognized	55,000,000
Compensation cost not yet recognized, period for recognition	2 years 1 month 3 days
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	316,000	245,000
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	2,722,000	2,096,000
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	1,617,000	1,615,000
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	$2,667,000	$2,390,000

EARNINGS_PER_SHARE_Calculation

EARNINGS PER SHARE (Calculation of Basic and Diluted Net Income Per Share) (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Numerator:
Net income (loss)	($573)	$273
Denominator:
Basic (in shares)	85,637	81,277
Weighted-average effect of potentially dilutive shares:
Employee stock options	0	11,920
RSUs and ESPP	0	114
Diluted (in shares)	85,637	93,311
Net income per share of common stock:
Basic (USD per share)	($0.01)	$0
Diluted (USD per share)	($0.01)	$0

EARNINGS_PER_SHARE_Antidilutiv

EARNINGS PER SHARE (Antidilutive Securities) (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	19,790	3,050
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	16,435	2,305
RSUs and ESPP
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	3,355	745

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	($867)	$698

SEGMENT_INFORMATION_Details

SEGMENT INFORMATION (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	employee
	activity
	segment
Segment Reporting [Abstract]
Number of industry segments	1
Number of business activities	1
Number of segment managers	0
Revenues from External Customers and Long-Lived Assets
Revenue	$82,078	$75,052
Americas
Revenues from External Customers and Long-Lived Assets
Revenue	40,739	40,487
United States
Revenues from External Customers and Long-Lived Assets
Revenue	38,966	38,475
Other Americas
Revenues from External Customers and Long-Lived Assets
Revenue	1,773	2,012
EMEA
Revenues from External Customers and Long-Lived Assets
Revenue	21,973	20,052
APAC
Revenues from External Customers and Long-Lived Assets
Revenue	$19,366	$14,513

SEGMENT_INFORMATION_Property_P

SEGMENT INFORMATION (Property, Plant, and Equipment by Geographic Region) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Segment Reporting Information
Property and equipment, net	$17,572	$13,636
Americas
Segment Reporting Information
Property and equipment, net	12,400
EMEA
Segment Reporting Information
Property and equipment, net	600
APAC
Segment Reporting Information
Property and equipment, net	$4,600