Ruckus Wireless (RKUS) 10-Q 31 Oct 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information Document	9 Months Ended
	Sep. 30, 2013	Oct. 25, 2013
Entity Information [Line Items]
Entity Registrant Name	RUCKUS WIRELESS INC
Entity Central Index Key	1294016
Document Type	10-Q
Document Period End Date	30-Sep-13
Amendment Flag	FALSE
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	-19
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		78,971,633

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:
Cash and cash equivalents	$70,653	$133,386
Short-term investments	69,019	0
Accounts receivable, net of allowance for doubtful accounts of $225 and $140 as of September 30, 2013 and December 31, 2012, respectively	41,821	41,296
Inventories	17,537	19,041
Deferred costs	3,625	5,188
Deferred tax assets	9,055	9,055
Prepaid expenses and other current assets	4,838	2,722
Total current assets	216,548	210,688
Property and equipment, net	11,039	8,959
Goodwill	9,945	9,031
Intangible Assets, Net (Excluding Goodwill)	10,001	4,991
Noncurrent deferred tax asset	10,746	9,214
Restricted cash	5,000	0
Other assets	990	956
Total assets	264,269	243,839
Current liabilities:
Accounts payable	18,655	16,164
Accrued compensation	11,881	9,447
Accrued liabilities	4,427	5,371
Liabilities related to acquisitions	1,000	2,000
Deferred revenue	28,909	36,613
Total current liabilities	64,872	69,595
Noncurrent deferred revenue	6,701	3,873
Noncurrent deferred tax liabilities	1,020	0
Other noncurrent liabilities	1,074	160
Total liabilities	73,667	73,628
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.001 par value; 250,000 shares authorized as of September 30, 2013 and December 31, 2012; 78,653 and 74,166 shares issued and outstanding as of September 30, 2013 and December 31, 2012, respectively	79	74
Additional paid–in capital	213,057	193,731
Accumulated Other Comprehensive Income (Loss), Net of Tax	-13	0
Accumulated deficit	-22,521	-23,594
Total stockholders’ equity	190,602	170,211
Total liabilities and stockholders’ equity	$264,269	$243,839

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$225	$140
Common stock, par value (in dollars per share)	$0.00	$0.00
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	78,653,000	74,166,000
Common stock, shares outstanding	78,653,000	74,166,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Product	$64,449	$55,263	$177,424	$143,960
Service	4,479	3,321	12,619	8,529
Total revenue	68,928	58,584	190,043	152,489
Cost of revenue:
Product	21,165	19,034	56,660	50,950
Service	2,512	1,424	7,246	3,383
Total cost of revenue	23,677	20,458	63,906	54,333
Gross profit	45,251	38,126	126,137	98,156
Operating expenses:
Research and development	16,268	12,291	44,980	30,478
Sales and marketing	21,106	14,872	57,522	39,782
General and administrative	8,410	5,356	23,291	13,793
Total operating expenses	45,784	32,519	125,793	84,053
Operating income (loss)	-533	5,607	344	14,103
Interest income (expense)	58	0	140	-472
Other expense, net	-102	-601	-329	-1,568
Income (loss) before income taxes	-577	5,006	155	12,063
Income tax benefit	-634	-453	-918	-17,769
Net income	57	5,459	1,073	29,832
Net income attributable to common stockholders	$57	$1,198	$1,073	$7,360
Net income per share attributable to common stockholders:
Basic (USD per share)	$0	$0.06	$0.01	$0.40
Diluted (USD per share)	$0	$0.04	$0.01	$0.24
Weighted average number of shares outstanding, basic (in shares)	77,735	18,477	75,771	18,295
Weighted average number of shares outstanding, diluted (in shares)	92,779	31,576	93,392	30,797

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income Statement (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$57	$5,459	$1,073	$29,832
Other comprehensive income (loss), net of tax:
Unrealized gains (loss) on short-term investment	25	0	-13	0
Comprehensive income	$82	$5,459	$1,060	$29,832

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities
Net income	$1,073	$29,832
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	4,703	3,494
Provision for doubtful accounts	736	155
Stock-based compensation	12,815	5,280
Amortization of investment premiums, net of accretion of purchase discounts	666	0
Deferred income taxes	-1,524	-17,919
Excess income tax benefit from the exercise of stock options	0	-33
Loss on disposal of property and equipment	34	35
Other	0	1,447
Changes in operating assets and liabilities, net of effects of business combination:
Accounts receivable	-1,261	-11,509
Inventories	1,504	-8,795
Deferred costs	1,563	-1,975
Prepaid expenses and other current assets	-2,017	-3,301
Other assets	156	-24
Accounts payable	2,586	8,143
Accrued compensation	2,426	2,957
Accrued liabilities	822	425
Deferred revenue	-4,876	15,170
Net cash provided by operating activities	19,406	23,382
Cash flows from investing activities
Cash used in acquisition, net of cash acquired	-6,882	-1,000
Purchase of investments	-69,797	0
Change in restricted cash	-5,000	0
Purchase of property and equipment	-5,914	-5,909
Increase in facility lease deposits	-190	-956
Net cash used in investing activities	-87,783	-7,865
Cash flows from financing activities
Offering costs for common stock	-839	-1,134
Proceeds from exercise of stock options	4,997	352
Proceeds from exercise of unvested stock options, net of repurchases	0	2
Proceeds from employee stock purchase plan	1,486	0
Excess income tax benefit from the exercise of stock options	0	33
Payments on credit facilities	0	-5,000
Payments on loans payable	0	-8,563
Proceeds from issuance of redeemable convertible preferred stock	0	25,000
Issuance costs for redeemable convertible preferred stock	0	-117
Net cash provided by financing activities	5,644	10,573
Net increase (decrease) in cash and cash equivalents	-62,733	26,090
Cash and cash equivalents at beginning of period	133,386	11,200
Cash and cash equivalents at end of period	70,653	37,290
Supplemental Disclosure of Cash Flow Information:
Income taxes paid	785	595
Interest paid	0	761
Noncash investing and financing activities
Deferred offering costs in prepaid expenses and other current assets	0	996
Vesting of early exercised stock options	33	92
Purchases of property and equipment recorded in accounts payable and accrued liabilities	$841	$584

DESCRIPTION_OF_BUSINESS_AND_SU

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
	Sep. 30, 2013
Description of Business and Summary of Significant Accounting Policies [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 leading provider of carrier-class Wi-Fi solutions. Ruckus’s solutions, which it calls Smart Wi-Fi, are used by service providers and enterprises to solve network capacity and coverage challenges associated with the rapidly increasing traffic and number of users on wireless networks. Ruckus’s Smart Wi-Fi solutions offer carrier-class enhanced reliability, consistent performance, extended range and massive scalability. Ruckus’s products include gateways, controllers and access points. These products incorporate Ruckus’s proprietary technologies, including Smart Radio, Smart QoS, Smart Mesh, SmartCell and Smart Scaling, to enable high performance in a variety of challenging operating conditions faced by service providers and enterprises.
	Initial Public Offering— In November 2012, Ruckus closed its initial public offering (“IPO”), in which 8,400,000 shares of common stock were sold to the public (inclusive of 7,000,000 shares of common stock sold by Ruckus). The public offering price of the shares sold in the IPO was $15.00 per share. The total gross proceeds from the offering were $126 million. After deducting underwriting discounts and commissions, offering expenses payable by Ruckus, and net proceeds received by the selling stockholders, the aggregate net proceeds received by Ruckus totaled approximately $94 million. Upon the closing of the initial public offering, all shares of the Company's outstanding redeemable convertible preferred stock automatically converted into 47,981,335 shares of common stock.
	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 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's Annual Report on Form 10-K for the year ended December 31, 2012, filed on March 5, 2013.
	The condensed consolidated balance sheet as of December 31, 2012, 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 2013 or any future period.
	Principals of Consolidation—The condensed consolidated financial statements include the accounts of Ruckus and its wholly owned subsidiaries (collectively, the “Company”, “we”, “us” or “our”). 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 and deferred revenue, allowance for doubtful accounts, goodwill and intangible valuation, the fair value of stock awards and preferred stock warrant liability, inventory valuation, estimates of warranty liability and accounting for income taxes. Management bases its estimates on historical experience and also on assumptions that it believes are reasonable. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management's estimates.
	Summary of Significant Accounting Policies—There have been no material changes to our significant accounting policies as compared to the those described in our Annual Report on Form 10-K for the year ended December 31, 2012, except as disclosed below.
	Short-Term Investments—The Company classifies investments as available-for-sale at the time of purchase as these investments are available to fund current operations. Available-for-sale investments are initially recorded at cost and periodically adjusted to fair value in the condensed consolidated balance sheets. Unrealized gains and losses on these investments are reported as a separate component of accumulated other comprehensive income (loss). Realized gains and losses are reported in the condensed consolidated statements of operations. The investments are adjusted for the amortization of premiums and discounts until maturity and such amortization is included in interest income (expense).
	The Company's short-term investments consist primarily of corporate bonds and commercial paper. As the Company views all investments as available for sale, management has the ability, if necessary, to liquidate any of these investments in order to meet the Company’s liquidity needs within the next 12 months. The Company’s policy is to protect the value of its investment portfolio and minimize principal risk by earning returns based on current interest rates.
	Investments are considered impaired when a decline in fair value is judged to be other-than-temporary. The Company consults with its investment managers and considers available quantitative and qualitative evidence in evaluating potential impairment of the investments on a quarterly basis. If the cost of an individual investment exceeds its fair value, the Company evaluates, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and the Company's intent and ability to hold the investment. Once a decline in fair value is determined to be other-than-temporary, the Company will record an impairment charge and establish a new cost basis in the investment. During the three and nine months ended September 30, 2013, the Company did not consider any of our investments to be other-than-temporarily impaired.
	Recent Accounting Pronouncements— In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2011-05, Presentation of Comprehensive Income. The standard requires entities to have more detailed reporting of comprehensive income. Specifically, the standard allows an entity to present components of net income and components of other comprehensive income in one continuous statement of comprehensive income, or in two separate, but consecutive statements. The guidance became effective for us in the first quarter of 2013 and applied retrospectively. The Company's adoption of this guidance did not have a material impact on our condensed consolidated financial position, results of operations, or cash flows.
	In February 2013, the FASB issued Accounting Standards Update No. 2013-02, Comprehensive Income (Topic 220)-Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The standard requires entities to present (either on the face of the income statement or in the notes) the effects on significant reclassifications of line items of the income statement out of accumulated other comprehensive income. The guidance will become effective for us in the first quarter of 2014 and should be applied prospectively. Early adoption is permitted. The Company does not expect that the adoption of this guidance will have a material impact on our condensed consolidated financial position, results of operations, or cash flows.
	Concentrations of Credit Risk and Significant Customers—The Company sells its products primarily to distributors and carriers 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 revenues were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Distributor A	15.1	%	16.1	%	15.3	%	16.2	%
	Distributor B	13.2	%	*		12.4	%	*
	Distributor C	*		*		*		14.7	%
	Distributor D	*		10.8	%	*		*
	*    Less than 10%
	The percentage of receivables from individual customers totaling greater than 10% of total consolidated accounts receivable were as follows:
		September 30,		December 31,
		2013		2012
	Distributor A	*		10.3	%
	Distributor E	10.2	%	*
	*    Less than 10%

FAIR_VALUE_DISCLOSURE

FAIR VALUE DISCLOSURE	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURE	FAIR VALUE MEASUREMENTS
	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. As of September 30, 2013 and December 31, 2012, the Company had no liabilities recorded at fair value in the condensed consolidated financial statements. 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. 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 are as follows (in thousands):
		September 30, 2013
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	39,479	$	39,479	$	—	$	—
	Short-term investments:
	Corporate bonds	59,026		—		59,026		—
	Commercial paper	9,993		—		9,993		—
	Total assets measured and recorded in fair value	$	108,498	$	39,479	$	69,019	$	—
		31-Dec-12
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	109,020	$	109,020	$	—	$	—

INVESTMENTS

INVESTMENTS	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS
	Investments consist of the following (in thousands):
		30-Sep-13
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate bonds	$	59,047	$	4		$	(25	)	$	59,026
	Commercial paper	9,993		—			—			9,993
	Total investments	$	69,040	$	4		$	(25	)	$	69,019
	Investments in an unrealized loss position at September 30, 2013 consist of the following (in thousands):
		Less Than 12 Months
		Fair Value		Unrealized Loss
	Corporate bonds	$	41,602	$	(25	)
	The Company does not intend to sell any of these investments and it is not more likely than not that we would be required to sell these investments before recovery of their amortized cost basis, which may be at maturity.
	The amortized cost and fair value of our investments at September 30, 2013, by contractual years-to-maturity, are as follows (in thousands):
		30-Sep-13
		Amortized Cost		Fair Value
	Maturity less than one year	$	69,040	$	69,019

BUSINESS_COMBINATION

BUSINESS COMBINATION	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]
Business Combination	BUSINESS COMBINATION
	On July 18, 2013, the Company acquired all of the outstanding equity interests of YFind Technologies Private Limited (“YFind”), a privately-held software company providing indoor positioning and real-time location-based analytics. The Company acquired YFind to obtain its technology and expertise in location-based services. The purchase price was $6.1 million, all of which was paid in cash.
	Former YFind employees who became the employees of the Company were granted 219,782 restricted stock units (“RSUs”) and 51,900 stock options under the Company's Amended and Restated 2012 Equity Incentive Plan (the "2012 Plan"). The equity awards vest between three and four years from when the employee was hired. The fair value of the equity awards of $3.6 million will be recognized as post-acquisition compensation expense over the requisite service period. The Company is also obligated to pay retention bonuses of up to $0.4 million to certain former YFind employees who became employees of the Company, over a two year period from the date of hire. Both the equity awards and the retention bonuses are subject to certain continued employment restrictions. For the third quarter of 2013, the Company recorded compensation costs of $0.7 million in research and development expenses associated with the equity awards and the retention bonuses. Acquisition-related costs of $0.2 million are included in general and administrative expenses.
	The preliminary fair value estimates for the assets acquired and liabilities assumed were performed during the third quarter of 2013. The fair values were based upon preliminary calculations and valuations and our estimates and assumptions are subject to change as we obtain additional information for our estimates during the measurement period (up to one year from the closing date). The primary areas of the purchase price that are not yet finalized are related to the fair values of the intangible assets acquired, certain income taxes and residual goodwill.
	The preliminary purchase allocation for YFind is summarized as follows (in thousands):
		Fair Value
	Cash and cash equivalents	$	257
	Other tangible assets	8
	In-process research and development	6,000
	Goodwill	914
	Noncurrent deferred tax liabilities	(1,020		)
	Other liabilities assumed	(21		)
	Total purchase consideration	$	6,138
	Pro forma results of operations for the YFind acquisition have not been presented because they are not material to the condensed consolidated statements of operations.

BALANCE_SHEET_INFORMATION

BALANCE SHEET INFORMATION	9 Months Ended
	Sep. 30, 2013
Balance Sheet Information [Abstract]
BALANCE SHEET INFORMATION	BALANCE SHEET INFORMATION
	The following tables provide details of selected condensed consolidated balance sheet items:
	Property and equipment consisted of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Computer hardware	$	6,392		$	3,413
	Computer software	2,328			2,075
	Machinery, equipment, and tooling	8,596			6,818
	Furniture and fixtures	1,546			1,427
	Leasehold improvements	2,879			2,270
	Total property and equipment, gross	21,741			16,003
	Less: accumulated depreciation and amortization	(10,702		)	(7,044		)
	Property and equipment, net	$	11,039		$	8,959
	Expense related to depreciation and amortization of property and equipment was $1.4 million and $0.9 million for the three months ended September 30, 2013 and 2012, respectively, and $3.7 million and $2.5 million for the nine months ended September 30, 2013 and 2012, respectively.
	Intangible assets consisted of the following (in thousands, except years):
		Gross Carrying			Accumulated			Net		Weighted
		Amount			Amortization			Carrying		Average
								Amount		Remaining
										Life
	September 30, 2013:
	Purchased technology	$	6,600		$	(2,599	)	$	4,001	3.0 years
	In-process research and development	6,000			—			6,000
	Total	$	12,600		$	(2,599	)	$	10,001
	December 31, 2012:
	Purchased technology	$	6,600		$	(1,609	)	$	4,991	3.8 years
	On July 18, 2013, the Company recorded the preliminary fair value of the in-process research and development of $6.0 million related to the acquisition of YFind. In-process research and development is accounted for as an indefinite-lived intangible asset until completion or abandonment of the associated research and development efforts. On October 12, 2011, the Company recorded the fair value of purchased technology of $6.6 million related to the acquisition of certain assets from IntelliNet Technologies, Inc.
	Amortization expense was $0.3 million for the three months ended September 30, 2013 and 2012 and $1.0 million for the nine months ended September 30, 2013 and 2012. Amortization expense is included as a component of cost of revenue in the accompanying condensed consolidated statements of operations.
	Estimated future amortization of intangible assets eligible for amortization at September 30, 2013, was as follows (in thousands):
	Year ending December 31,	Amount
	2013 (remaining three months)	$	330
	2014	1,320
	2015	1,320
	2016	1,031
	Total amortization	$	4,001
	The Company had goodwill of $9.9 million and $9.0 million as of September 30, 2013 and December 31, 2012, respectively. No impairment has been recognized related to the goodwill balances.
	Deferred revenue consisted of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Product	$	18,127		$	27,831
	Service	17,483			12,655
	Total deferred revenue	$	35,610		$	40,486
	Reported as:
	Current	$	28,909		$	36,613
	Noncurrent	6,701			3,873
	Total deferred revenue	$	35,610		$	40,486
	Deferred product revenue relates to arrangements where not all revenue recognition criteria have been met. Deferred services revenue represents support contracts billed in advance and revenue is recognized ratably over the support period, typically one to five years.
	As of December 31, 2012, the Company deferred $5.2 million in revenue related to a service provider for future products. During the three and nine months ended September 30, 2013, the Company recognized $2.6 million and $5.2 million, respectively, of the deferred product revenue with no related cost of product as the rights to future products expired unused by the service provider.

COMMITMENTS_AND_CONTINGENCIES

COMMITMENTS AND CONTINGENCIES	9 Months Ended
	Sep. 30, 2013
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, Beijing, China, Taipei, Taiwan, and Bangalore, India, and are leased under non-cancellable operating lease arrangements.
	Future minimum lease payments under non-cancellable operating leases are as follows (in thousands):
	Year ending December 31,	Amount
	2013 (remaining three months)	$	714
	2014	3,903
	2015	3,058
	2016	2,352
	2017	2,285
	Thereafter	12,266
	Total	$	24,578
	Litigation—From time to time, the Company is or may become involved in legal proceedings, claims, and litigation arising in the ordinary course of business.
	NETGEAR v. Ruckus Wireless. In November 2010, NETGEAR, Inc. (“NETGEAR”) filed a lawsuit against the Company in the U.S. District Court, District of Delaware, claiming the infringement of five patents that were acquired by NETGEAR in August 2010 from an entity in the business of licensing intellectual property. The suit seeks damages, injunctive relief, and other remedies. The Company later filed a motion to transfer venue to the U.S. District Court, Northern District of California, where the Company already had a pending patent infringement suit against NETGEAR claiming the infringement of two of the Company’s patents originating from inventions conceived by the Company. The Company’s motion to transfer venue was denied, although proceedings in the Company’s suit against NETGEAR are still on-going. A jury trial in the U.S. District Court, District of Delaware began on October 22, 2013 in NETGEAR’s suit against the Company. As of the date of the filing of this Form 10-Q, no verdict has been reached by the jury in that suit. It is too early to reasonably estimate the financial impact, if any, to the Company as a result of these matters.
	Although the results of legal proceedings, claims, and litigation cannot be predicted with certainty, the Company does not currently believe that the final disposition of any of these matters will have a material effect on the business. The Company will record a liability when it believes that it is both probable that a loss has been incurred and the amount can be reasonably estimated. The Company periodically evaluates developments in its legal matters that could affect the amount of liability that it has previously accrued, if any, and makes adjustments as appropriate. Significant judgment is required to determine both likelihood of there being, and the estimated amount of, a loss related to such matters, and the Company's judgment may be incorrect. Until the final resolution of any such matters that the Company may be required to accrue for, there may be an exposure to loss in excess of the amount accrued.
	Purchase Commitments—As of September 30, 2013, the Company had current purchase commitments of $5.6 million for inventory and specific contracted 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 September 30, 2013 and December 31, 2012.
	Warranties—The Company offers a limited lifetime hardware warranty on its indoor wireless local area network ("LAN") products and a limited warranty for all other products for a period of up to 1 year for hardware and 90 days for software. The Company estimates the costs that may be incurred under its limited or limited lifetime warranty 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 materials used 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 are as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Beginning warranty liability	$	751		$	678		$	725		$	489
	Changes in existing warranty	10			(86		)	(14		)	(254		)
	Warranty expense	215			340			506			883
	Obligations fulfilled	(172		)	(136		)	(413		)	(322		)
	Ending warranty liability	$	804		$	796		$	804		$	796

EQUITY_AWARD_PLANS

EQUITY AWARD PLANS	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
EQUITY AWARD PLANS	EQUITY AWARD PLANS
	Stock Option and Restricted Stock Unit Activity
	The following table summarizes the information about shares available for grant and outstanding stock option activity (in thousands, except per share amounts and years):
					Common Stock Options Outstanding
		Shares Available for			Number of			Weighted Average Exercise				Weighted			Aggregate
		Grant			Shares			Price Per Share				Average			Intrinsic
												Remaining			Value
												Contractual Life
												(Years)
	Balance, December 31, 2012	6,961			24,400			$	2.82			7.7			$	480,878
	Additional shares reserved for issuance	3,708
	RSUs granted	-620			—
	RSUs forfeited	32			—
	Options granted	-521			521			17.98
	Options exercised	—			-4,071			1.23
	Options forfeited	555			-555			5.02
	Shares repurchased	1			—			—
	Balance, September 30, 2013	10,116			20,295			$	3.47			7.3			$	272,411
	Options vested and expected to vest, September 30, 2013				19,648			$	3.38			7.2			$	265,414
	Options exercisable, September 30, 2013				11,323			$	1.93			6.5			$	168,715
	The weighted average grant date fair value per share of stock options was approximately $8.33 and $4.66 for the three months ended September 30, 2013 and 2012, respectively, and $11.22 and $3.54 for the nine months ended September 30, 2013 and 2012, respectively.
	The total intrinsic value of options exercised was approximately $24.9 million and $1.1 million for the three months ended September 30, 2013 and 2012, respectively, and $50.5 million and $2.6 million for the nine months ended September 30, 2013 and 2012, respectively. The aggregate intrinsic value represents the difference between the Company's estimated fair value of its common stock, prior to the IPO, or the closing stock price of the Company's common stock, following the IPO, compared to the exercise price of the outstanding, in-the-money options.
	The 2012 Plan provides for the granting of RSUs to employees, directors, and consultants. During the first quarter of 2013, the Company began granting RSUs to employees. RSUs granted under the 2012 Plan vest over the periods determined by the board of directors, generally two to four years, beginning from the vesting commencement date.
	The following table summarizes the restricted stock units outstanding (in thousands, except per share amounts and years):
		Restricted Stock Units Outstanding
		Number of Shares			Weighted Average Grant Date Fair Value Per Share				Weighted			Aggregate Intrinsic Value
									Average
									Remaining
									Contractual Life
									(Years)
	Balance, December 31, 2012	—			$	—			—			$	—
	RSUs granted	620			17.65
	RSUs vested	—			—
	RSUs forfeited	(32	)		15.51
	Balance, September 30, 2013	588			$	17.77			1.5			$	9,897
	Fair Value Disclosures
	The Company measures compensation expense for all stock-based payment awards, including stock options and RSUs granted to employees and purchases under the Company's Employee Stock Purchase Plan (“ESPP”), based on the estimated fair values on the date of the grant. The fair value of each stock option granted is estimated using the Black-Scholes option pricing model. The fair value of each RSU granted represents the closing price of our common stock on the date of grant. The fair value of purchases under the Company's ESPP is calculated based on the closing price of the Company's stock on the date of grant and the value of put and call options estimated using the Black-Scholes option pricing model. Stock-based compensation is recognized on a straight-line basis over the requisite service period, net of estimated forfeitures. The forfeiture rate is based on an analysis of the Company’s actual historical forfeitures.
	The Company accounts for stock options issued to nonemployees based on the fair value of the awards determined using the Black-Scholes option pricing model. The fair value of stock options granted to nonemployees is re-measured as the stock options vest, and the resulting change in fair value, if any, is recognized in the Company’s condensed consolidated statement of operations during the period the related services are rendered.
	Employee Stock Options
	The following table summarizes the weighted average assumptions relating to our stock options:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Volatility	68.4	%		72.2	%		69.6	%		68.8	%
	Expected term (years)	6.08			6.03			6.05			6.03
	Risk-free interest rate	1.71	%		0.87	%		1.34	%		1	%
	Dividend yield	—			—			—			—
	Employee Stock Purchase Plan
	There were no stock purchase rights granted under the ESPP during the three months ended September 30, 2013 and the three and nine months ended September 30, 2012. The following table summarizes the weighted average assumptions relating to our ESPP:
		Nine Months Ended September 30,
		2013
	Volatility	57.6	%
	Expected term (years)	0.5
	Risk-free interest rate	0.11	%
	Dividend yield	—
	Stock-based Compensation Expense
	Stock-based compensation expense consists primarily of expenses for stock options, RSUs, and employee stock purchase rights granted to employees. The following table summarizes stock-based compensation expense (in thousands):
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Cost of revenue	$	193			$	84			$	575			$	137
	Research and development	1,994				748				4,772				1,505
	Sales and marketing	1,223				552				3,410				1,110
	General and administrative	1,476				1,018				4,472				2,528
	Total stock-based compensation	4,886				2,402				13,229				5,280
	Tax benefit from stock-based compensation	(289		)		—				(469		)		—
Total stock-based compensation, net of tax effect	$	4,597			$	2,402			$	12,760			$	5,280
The following table presents stock-based compensation expense by award-type (in thousands):
	Three Months Ended September 30,								Nine Months Ended September 30,
	2013				2012				2013				2012
Stock options	$	3,183			$	2,402			$	9,332			$	5,280
Restricted stock units	1,252				—				2,116				—
Employee stock purchase plan	451				—				1,781				—
Total stock-based compensation	4,886				2,402				13,229				5,280
Tax benefit from stock-based compensation	(289		)		—				(469		)		—
Total stock-based compensation, net of tax effect	$	4,597			$	2,402			$	12,760			$	5,280
For the three months ended September 30, 2013, the Company recognized $0.4 million in stock-based compensation related to the cash settlement of equity awards held by former YFind employees.
At September 30, 2013, total compensation expense related to unvested share-based awards granted to employees under our stock plans but not yet recognized was $33.4 million, net of estimated forfeitures. This expense is expected to be amortized on a straight-line basis over a weighted-average period of 2.3 years.

COMMON_STOCK_WARRANTS

COMMON STOCK WARRANTS	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]
COMMON STOCK WARRANTS	COMMON STOCK WARRANTS
	During the nine months ended September 30, 2013, warrants to purchase 295,748 shares of common stock were exercised into 278,021 shares of common stock in accordance with the net cashless exercise feature as provided under the original warrant agreements. As of September 30, 2013, no common stock warrants remained outstanding.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE
	For periods presented prior to the IPO, basic and diluted net income per common share is computed using the two-class method required for participating securities. Concurrent with the closing of the IPO in November 2012, all shares of outstanding preferred stock automatically converted into shares of the Company’s common stock. Following the date of the IPO, the two-class method was no longer required as the Company had one class of securities.
	Prior to the conversion of the preferred stock, holders of Series A-1, Series B, Series C, Series D, Series E, Series F and Series G redeemable convertible preferred stock were each entitled to receive non-cumulative dividends at the annual rate of $0.0136, $0.0294, $0.0690, $0.0876, $0.1092, $0.1188 and $0.3267 per share per annum, respectively, payable prior and in preference to any dividends on any shares of the Company's common stock. In the event a dividend was paid on common stock, the holders of preferred stock were entitled to a proportionate share of any such dividend as if they were holders of common stock (on an as-if converted basis). The holders of the Company's preferred stock did not have a contractual obligation to share in the losses of the Company. The Company considered its preferred stock to be participating securities and, in accordance with the two-class method, earnings allocated to preferred stock and the related number of outstanding shares of preferred stock have been excluded from the computation of basic and diluted net income per common share.
	Under the two-class method, net income attributable to common stockholders is determined by allocating undistributed earnings, calculated as net income less current period preferred stock non-cumulative dividends, between common stock and preferred stock. In computing diluted net income attributable to common stockholders, undistributed earnings are re-allocated to reflect the potential impact of dilutive securities. Basic net income per common share is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding during the period. Shares of common stock subject to repurchase resulting from the early exercise of employee stock options are considered participating securities and are therefore included in the basic weighted-average common shares outstanding. Diluted net income per share attributable to common stockholders is computed by dividing the net income attributable to common stockholders by the weighted-average number of common shares outstanding, including potential dilutive common shares assuming the dilutive effect of outstanding stock options and RSUs using the treasury stock method.
	The following table presents the calculation of basic and diluted net income per share (in thousands, except per share amounts):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013		2012
	Basic net income per share:
	Numerator:
	Net income	$	57		$	5,459		$	1,073	$	29,832
	Less: Undistributed earnings allocated to participating securities	—			(4,261		)	—		(22,472		)
	Net income attributable to common stockholders, basic and diluted	$	57		$	1,198		$	1,073	$	7,360
	Denominator:
	Weighted-average shares used in computing net income per share attributable to common stockholders:
	Basic	77,735			18,477			75,771		18,295
	Weighted-average effect of potentially dilutive shares:
	Employee stock options	15,017			12,877			17,479		12,310
	RSUs and other dilutive securities	27			222			142		192
	Diluted	92,779			31,576			93,392		30,797
	Net income per share of common stock:
	Basic	$	0		$	0.06		$	0.01	$0.40
	Diluted	$	0		$	0.04		$	0.01	$0.24
	The following table summarizes the outstanding stock options, RSUs, warrants and redeemable convertible preferred stock that were excluded from the diluted per share calculation for the periods presented because to include them would have been anti-dilutive (in thousands):
		Three Months Ended September 30,					Nine Months Ended September 30,
		2013		2012			2013		2012
	Stock options	1,034		7,366			1,050		7,364
	RSUs	321		—			323		—
	Warrants	—		323			—		323
	Redeemable convertible preferred stock	—		47,875			—		47,875
	Total	1,355		55,564			1,373		55,562

INCOME_TAXES

INCOME TAXES	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES
	The income tax benefit of $0.6 million for the three months ended September 30, 2013 primarily relates to certain stock-based compensation deductions. The tax benefit of $0.5 million for the three months ended September 30, 2012 was primarily due to a reversal of the valuation allowance against deferred tax assets of $0.5 million.
	The income tax benefit of $0.9 million for the nine months ended September 30, 2013 primarily relates to certain stock-based compensation deductions and the extension of the R&D credit by Congress in January 2013. The extension of the credit provided a discrete benefit of $0.6 million. These deductions were offset by minor amounts of state and foreign taxes. The tax benefit of $17.8 million for the nine months ended September 30, 2012 was primarily due to a reversal of the valuation allowance against deferred tax assets of $18.0 million, offset by minor amounts of state and foreign taxes.
	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 its deferred tax assets are without a valuation allowance. 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 negative evidence were to outweigh positive evidence, a valuation allowance would be recorded with an increase in tax expense in the condensed consolidated statements of operations and without any change in net cash provided by operating activities in the condensed consolidated statements of cash flows.

SEGEMENT_INFORMATION

SEGEMENT INFORMATION	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
SEGMENT INFORMATION	SEGMENT INFORMATION
	The Company operates in one industry segment selling access points and controllers 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 September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Americas:
	United States	$	31,254	$	27,240	$	85,233	$	64,923
	Other Americas	4,283		1,675		9,681		3,224
	Total Americas	35,537		28,915		94,914		68,147
	APAC:
	Japan	6,218		3,658		11,894		22,660
	Other APAC	8,548		11,648		32,392		27,884
	Total APAC	14,766		15,306		44,286		50,544
	EMEA:
	United Kingdom	7,102		6,860		20,887		13,971
	Other EMEA	11,523		7,503		29,956		19,827
	Total EMEA	18,625		14,363		50,843		33,798
	Total revenue	$	68,928	$	58,584	$	190,043	$	152,489
	As of September 30, 2013, the Company has $8.0 million, $2.8 million and $0.2 million of property and equipment, net located in the United States, APAC, and EMEA, respectively.

DESCRIPTION_OF_BUSINESS_AND_SU1

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business	Description of Business—Ruckus Wireless, Inc. (“Ruckus”) is a leading provider of carrier-class Wi-Fi solutions. Ruckus’s solutions, which it calls Smart Wi-Fi, are used by service providers and enterprises to solve network capacity and coverage challenges associated with the rapidly increasing traffic and number of users on wireless networks. Ruckus’s Smart Wi-Fi solutions offer carrier-class enhanced reliability, consistent performance, extended range and massive scalability. Ruckus’s products include gateways, controllers and access points. These products incorporate Ruckus’s proprietary technologies, including Smart Radio, Smart QoS, Smart Mesh, SmartCell and Smart Scaling, to enable high performance in a variety of challenging operating conditions faced by service providers and enterprises.
Initial Public Offering	Initial Public Offering— In November 2012, Ruckus closed its initial public offering (“IPO”), in which 8,400,000 shares of common stock were sold to the public (inclusive of 7,000,000 shares of common stock sold by Ruckus). The public offering price of the shares sold in the IPO was $15.00 per share. The total gross proceeds from the offering were $126 million. After deducting underwriting discounts and commissions, offering expenses payable by Ruckus, and net proceeds received by the selling stockholders, the aggregate net proceeds received by Ruckus totaled approximately $94 million. Upon the closing of the initial public offering, all shares of the Company's outstanding redeemable convertible preferred stock automatically converted into 47,981,335 shares of common stock.
Basis of Accounting, Policy	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 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's Annual Report on Form 10-K for the year ended December 31, 2012, filed on March 5, 2013.
	The condensed consolidated balance sheet as of December 31, 2012, 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 2013 or any future period.
Principles of Consolidation	Principals of Consolidation—The condensed consolidated financial statements include the accounts of Ruckus and its wholly owned subsidiaries (collectively, the “Company”, “we”, “us” or “our”). 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 and deferred revenue, allowance for doubtful accounts, goodwill and intangible valuation, the fair value of stock awards and preferred stock warrant liability, inventory valuation, estimates of warranty liability and accounting for income taxes. Management bases its estimates on historical experience and also on assumptions that it believes are reasonable. These estimates are based on information available as of the date of the condensed consolidated financial statements; therefore, actual results could differ from management's estimates.
Short-Term Investments	Short-Term Investments—The Company classifies investments as available-for-sale at the time of purchase as these investments are available to fund current operations. Available-for-sale investments are initially recorded at cost and periodically adjusted to fair value in the condensed consolidated balance sheets. Unrealized gains and losses on these investments are reported as a separate component of accumulated other comprehensive income (loss). Realized gains and losses are reported in the condensed consolidated statements of operations. The investments are adjusted for the amortization of premiums and discounts until maturity and such amortization is included in interest income (expense).
	The Company's short-term investments consist primarily of corporate bonds and commercial paper. As the Company views all investments as available for sale, management has the ability, if necessary, to liquidate any of these investments in order to meet the Company’s liquidity needs within the next 12 months. The Company’s policy is to protect the value of its investment portfolio and minimize principal risk by earning returns based on current interest rates.
	Investments are considered impaired when a decline in fair value is judged to be other-than-temporary. The Company consults with its investment managers and considers available quantitative and qualitative evidence in evaluating potential impairment of the investments on a quarterly basis. If the cost of an individual investment exceeds its fair value, the Company evaluates, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and the Company's intent and ability to hold the investment. Once a decline in fair value is determined to be other-than-temporary, the Company will record an impairment charge and establish a new cost basis in the investment. During the three and nine months ended September 30, 2013, the Company did not consider any of our investments to be other-than-temporarily impaired
Recent Accounting Pronouncements	Recent Accounting Pronouncements— In June 2011, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update 2011-05, Presentation of Comprehensive Income. The standard requires entities to have more detailed reporting of comprehensive income. Specifically, the standard allows an entity to present components of net income and components of other comprehensive income in one continuous statement of comprehensive income, or in two separate, but consecutive statements. The guidance became effective for us in the first quarter of 2013 and applied retrospectively. The Company's adoption of this guidance did not have a material impact on our condensed consolidated financial position, results of operations, or cash flows.
	In February 2013, the FASB issued Accounting Standards Update No. 2013-02, Comprehensive Income (Topic 220)-Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. The standard requires entities to present (either on the face of the income statement or in the notes) the effects on significant reclassifications of line items of the income statement out of accumulated other comprehensive income. The guidance will become effective for us in the first quarter of 2014 and should be applied prospectively. Early adoption is permitted. The Company does not expect that the adoption of this guidance will have a material impact on our condensed consolidated financial position, results of operations, or cash flows.
Concentrations of Credit Risk and Significant Customers	Concentrations of Credit Risk and Significant Customers—The Company sells its products primarily to distributors and carriers 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.

DESCRIPTION_OF_BUSINESS_AND_SU2

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	9 Months Ended
	Sep. 30, 2013
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 revenues were as follows:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Distributor A	15.1	%	16.1	%	15.3	%	16.2	%
	Distributor B	13.2	%	*		12.4	%	*
	Distributor C	*		*		*		14.7	%
	Distributor D	*		10.8	%	*		*
	*    Less than 10%
	The percentage of receivables from individual customers totaling greater than 10% of total consolidated accounts receivable were as follows:
		September 30,		December 31,
		2013		2012
	Distributor A	*		10.3	%
	Distributor E	10.2	%	*
	*    Less than 10%

FAIR_VALUE_DISCLOSURE_Tables

FAIR VALUE DISCLOSURE (Tables)	9 Months Ended
	Sep. 30, 2013
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 are as follows (in thousands):
		September 30, 2013
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	39,479	$	39,479	$	—	$	—
	Short-term investments:
	Corporate bonds	59,026		—		59,026		—
	Commercial paper	9,993		—		9,993		—
	Total assets measured and recorded in fair value	$	108,498	$	39,479	$	69,019	$	—
		31-Dec-12
		Fair Value		Level 1		Level 2		Level 3
	Assets:
	Money market funds	$	109,020	$	109,020	$	—	$	—

INVESTMENTS_Tables

INVESTMENTS (Tables)	9 Months Ended
	Sep. 30, 2013
Investments, Debt and Equity Securities [Abstract]
Schedule of available-for-sale investments	Investments consist of the following (in thousands):
		30-Sep-13
		Amortized Cost		Unrealized Gains			Unrealized Losses			Fair Value
	Corporate bonds	$	59,047	$	4		$	(25	)	$	59,026
	Commercial paper	9,993		—			—			9,993
	Total investments	$	69,040	$	4		$	(25	)	$	69,019
Schedule of available-for-sale investments in unrealized loss position	Investments in an unrealized loss position at September 30, 2013 consist of the following (in thousands):
		Less Than 12 Months
		Fair Value		Unrealized Loss
	Corporate bonds	$	41,602	$	(25	)
Contractual maturities on available-for-sale investments	The amortized cost and fair value of our investments at September 30, 2013, by contractual years-to-maturity, are as follows (in thousands):
		30-Sep-13
		Amortized Cost		Fair Value
	Maturity less than one year	$	69,040	$	69,019

BUSINESS_COMBINATION_Tables

BUSINESS COMBINATION (Tables)	9 Months Ended
	Sep. 30, 2013
Business Combinations [Abstract]
Preliminary purchase allocation	The preliminary purchase allocation for YFind is summarized as follows (in thousands):
		Fair Value
	Cash and cash equivalents	$	257
	Other tangible assets	8
	In-process research and development	6,000
	Goodwill	914
	Noncurrent deferred tax liabilities	(1,020		)
	Other liabilities assumed	(21		)
	Total purchase consideration	$	6,138

BALANCE_SHEET_INFORMATION_Tabl

BALANCE SHEET INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2013
Balance Sheet Information [Abstract]
Schedule of property and equipment	Property and equipment consisted of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Computer hardware	$	6,392		$	3,413
	Computer software	2,328			2,075
	Machinery, equipment, and tooling	8,596			6,818
	Furniture and fixtures	1,546			1,427
	Leasehold improvements	2,879			2,270
	Total property and equipment, gross	21,741			16,003
	Less: accumulated depreciation and amortization	(10,702		)	(7,044		)
	Property and equipment, net	$	11,039		$	8,959
Schedule intangible assets	Intangible assets consisted of the following (in thousands, except years):
		Gross Carrying			Accumulated			Net		Weighted
		Amount			Amortization			Carrying		Average
								Amount		Remaining
										Life
	September 30, 2013:
	Purchased technology	$	6,600		$	(2,599	)	$	4,001	3.0 years
	In-process research and development	6,000			—			6,000
	Total	$	12,600		$	(2,599	)	$	10,001
	December 31, 2012:
	Purchased technology	$	6,600		$	(1,609	)	$	4,991	3.8 years
Estimated future amortization of purchased intangible assets	Estimated future amortization of intangible assets eligible for amortization at September 30, 2013, was as follows (in thousands):
	Year ending December 31,	Amount
	2013 (remaining three months)	$	330
	2014	1,320
	2015	1,320
	2016	1,031
	Total amortization	$	4,001
Summary of deferred revenue	Deferred revenue consisted of the following (in thousands):
		September 30,			December 31,
		2013			2012
	Product	$	18,127		$	27,831
	Service	17,483			12,655
	Total deferred revenue	$	35,610		$	40,486
	Reported as:
	Current	$	28,909		$	36,613
	Noncurrent	6,701			3,873
	Total deferred revenue	$	35,610		$	40,486

COMMITMENTS_AND_CONTINGENCIES_

COMMITMENTS AND CONTINGENCIES (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancellable operating leases	Future minimum lease payments under non-cancellable operating leases are as follows (in thousands):
	Year ending December 31,	Amount
	2013 (remaining three months)	$	714
	2014	3,903
	2015	3,058
	2016	2,352
	2017	2,285
	Thereafter	12,266
	Total	$	24,578
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 are as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Beginning warranty liability	$	751		$	678		$	725		$	489
	Changes in existing warranty	10			(86		)	(14		)	(254		)
	Warranty expense	215			340			506			883
	Obligations fulfilled	(172		)	(136		)	(413		)	(322		)
	Ending warranty liability	$	804		$	796		$	804		$	796

EQUITY_AWARD_PLANS_Tables

EQUITY AWARD PLANS (Tables)	9 Months Ended
	Sep. 30, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of shares available for grant and outstanding stock option activity	The following table summarizes the information about shares available for grant and outstanding stock option activity (in thousands, except per share amounts and years):
					Common Stock Options Outstanding
		Shares Available for			Number of			Weighted Average Exercise				Weighted			Aggregate
		Grant			Shares			Price Per Share				Average			Intrinsic
												Remaining			Value
												Contractual Life
												(Years)
	Balance, December 31, 2012	6,961			24,400			$	2.82			7.7			$	480,878
	Additional shares reserved for issuance	3,708
	RSUs granted	-620			—
	RSUs forfeited	32			—
	Options granted	-521			521			17.98
	Options exercised	—			-4,071			1.23
	Options forfeited	555			-555			5.02
	Shares repurchased	1			—			—
	Balance, September 30, 2013	10,116			20,295			$	3.47			7.3			$	272,411
	Options vested and expected to vest, September 30, 2013				19,648			$	3.38			7.2			$	265,414
	Options exercisable, September 30, 2013				11,323			$	1.93			6.5			$	168,715
Summary of restricted stock units outstanding	The following table summarizes the restricted stock units outstanding (in thousands, except per share amounts and years):
		Restricted Stock Units Outstanding
		Number of Shares			Weighted Average Grant Date Fair Value Per Share				Weighted			Aggregate Intrinsic Value
									Average
									Remaining
									Contractual Life
									(Years)
	Balance, December 31, 2012	—			$	—			—			$	—
	RSUs granted	620			17.65
	RSUs vested	—			—
	RSUs forfeited	(32	)		15.51
	Balance, September 30, 2013	588			$	17.77			1.5			$	9,897
Summary of stock options, valuation assumptions	The following table summarizes the weighted average assumptions relating to our stock options:
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013			2012
	Volatility	68.4	%		72.2	%		69.6	%		68.8	%
	Expected term (years)	6.08			6.03			6.05			6.03
	Risk-free interest rate	1.71	%		0.87	%		1.34	%		1	%
	Dividend yield	—			—			—			—
Summary of Employee Stock Purchase Plan, valuation assumptions	The following table summarizes the weighted average assumptions relating to our ESPP:
		Nine Months Ended September 30,
		2013
	Volatility	57.6	%
	Expected term (years)	0.5
	Risk-free interest rate	0.11	%
	Dividend yield	—
Schedule of allocation of stock-based compensation expense	The following table summarizes stock-based compensation expense (in thousands):
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Cost of revenue	$	193			$	84			$	575			$	137
	Research and development	1,994				748				4,772				1,505
	Sales and marketing	1,223				552				3,410				1,110
	General and administrative	1,476				1,018				4,472				2,528
	Total stock-based compensation	4,886				2,402				13,229				5,280
	Tax benefit from stock-based compensation	(289		)		—				(469		)		—
	Total stock-based compensation, net of tax effect	$	4,597			$	2,402			$	12,760			$	5,280
Stock-based compensation expense by award-type	The following table presents stock-based compensation expense by award-type (in thousands):
		Three Months Ended September 30,								Nine Months Ended September 30,
		2013				2012				2013				2012
	Stock options	$	3,183			$	2,402			$	9,332			$	5,280
	Restricted stock units	1,252				—				2,116				—
	Employee stock purchase plan	451				—				1,781				—
	Total stock-based compensation	4,886				2,402				13,229				5,280
	Tax benefit from stock-based compensation	(289		)		—				(469		)		—
	Total stock-based compensation, net of tax effect	$	4,597			$	2,402			$	12,760			$	5,280

EARNINGS_PER_SHARE_Tables

EARNINGS PER SHARE (Tables)	9 Months Ended
	Sep. 30, 2013
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 per share (in thousands, except per share amounts):
		Three Months Ended September 30,						Nine Months Ended September 30,
		2013			2012			2013		2012
	Basic net income per share:
	Numerator:
	Net income	$	57		$	5,459		$	1,073	$	29,832
	Less: Undistributed earnings allocated to participating securities	—			(4,261		)	—		(22,472		)
	Net income attributable to common stockholders, basic and diluted	$	57		$	1,198		$	1,073	$	7,360
	Denominator:
	Weighted-average shares used in computing net income per share attributable to common stockholders:
	Basic	77,735			18,477			75,771		18,295
	Weighted-average effect of potentially dilutive shares:
	Employee stock options	15,017			12,877			17,479		12,310
	RSUs and other dilutive securities	27			222			142		192
	Diluted	92,779			31,576			93,392		30,797
	Net income per share of common stock:
	Basic	$	0		$	0.06		$	0.01	$0.40
	Diluted	$	0		$	0.04		$	0.01	$0.24
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 outstanding stock options, RSUs, warrants and redeemable convertible preferred stock that were excluded from the diluted per share calculation for the periods presented because to include them would have been anti-dilutive (in thousands):
		Three Months Ended September 30,					Nine Months Ended September 30,
		2013		2012			2013		2012
	Stock options	1,034		7,366			1,050		7,364
	RSUs	321		—			323		—
	Warrants	—		323			—		323
	Redeemable convertible preferred stock	—		47,875			—		47,875
	Total	1,355		55,564			1,373		55,562

SEGEMENT_INFORMATION_Tables

SEGEMENT INFORMATION (Tables)	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]
Schedule of total revenue by geographic region	The following presents total revenue by geographic region (in thousands):
		Three Months Ended September 30,				Nine Months Ended September 30,
		2013		2012		2013		2012
	Americas:
	United States	$	31,254	$	27,240	$	85,233	$	64,923
	Other Americas	4,283		1,675		9,681		3,224
	Total Americas	35,537		28,915		94,914		68,147
	APAC:
	Japan	6,218		3,658		11,894		22,660
	Other APAC	8,548		11,648		32,392		27,884
	Total APAC	14,766		15,306		44,286		50,544
	EMEA:
	United Kingdom	7,102		6,860		20,887		13,971
	Other EMEA	11,523		7,503		29,956		19,827
	Total EMEA	18,625		14,363		50,843		33,798
	Total revenue	$	68,928	$	58,584	$	190,043	$	152,489

DESCRIPTION_OF_BUSINESS_AND_SU3

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Initial Public Offering) (Details) (USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	Nov. 15, 2012
Class of Stock
Stock issued for initial public offering (in shares)	8,400,000
Share price	$15
Gross proceeds from initial public offering	$126
Redeemable convertible preferred stock converted into common stock (in shares)	47,981,335
Ruckus Wireless
Class of Stock
Stock issued for initial public offering (in shares)	7,000,000
Proceeds from initial public offering excluding underwriting discounts and commissions, and offering expenses payable	$94

DESCRIPTION_OF_BUSINESS_AND_SU4

DESCRIPTION OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Concentration of Credit Risk and Significant Customers) (Details)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013
	Revenues	Revenues	Revenues	Revenues	Revenues	Revenues	Revenues	Revenues	Accounts Receivables	Accounts Receivables
	Distributor A	Distributor A	Distributor A	Distributor A	Distributor B	Distributor B	Distributor C	Distributor D	Distributor A	Distributor E
Revenue, Major Customer
Significant customer, as a percentage	15.10%	16.10%	15.30%	16.20%	13.20%	12.40%	14.70%	10.80%	10.30%	10.20%

FAIR_VALUE_DISCLOSURE_Details

FAIR VALUE DISCLOSURE (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets, Fair Value Disclosure	$108,498
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets, Fair Value Disclosure	39,479
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets, Fair Value Disclosure	69,019
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Assets, Fair Value Disclosure	0
Money Market Funds | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Money market funds, at fair value	39,479	109,020
Money Market Funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Money market funds, at fair value	39,479	109,020
Money Market Funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Money market funds, at fair value	0	0
Money Market Funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Money market funds, at fair value	0	0
Corporate bonds | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	59,026
Corporate bonds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	0
Corporate bonds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	59,026
Corporate bonds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	0
Commercial paper | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	9,993
Commercial paper | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	0
Commercial paper | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	9,993
Commercial paper | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Available-for-sale Securities, Current, Fair Value Disclosure	$0

INVESTMENTS_Details

INVESTMENTS (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities
Amortized Cost	$69,040
Unrealized Gains	4
Unrealized Losses	-25
Fair Value	69,019
Corporate bonds
Schedule of Available-for-sale Securities
Amortized Cost	59,047
Unrealized Gains	4
Unrealized Losses	-25
Fair Value	59,026
Commercial paper
Schedule of Available-for-sale Securities
Amortized Cost	9,993
Unrealized Gains	0
Unrealized Losses	0
Fair Value	$9,993

INVESTMENTS_Availableforsale_i

INVESTMENTS Available-for-sale investments in unrealized loss position (Details) (Corporate bonds, USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Corporate bonds
Schedule of Available-for-sale Securities
Less than 12 months, Fair Value	$41,602
Less than 12 months, Unrealized Loss	($25)

INVESTMENTS_Availableforsale_i1

INVESTMENTS Available-for-sale investments, Contractual Maturities (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Amortized Cost
Maturity less than one year	$69,040
Fair Value
Maturity less than one year	$69,019

BUSINESS_COMBINATION_Details

BUSINESS COMBINATION (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2013

Jul. 18, 2013

Sep. 30, 2013

Sep. 30, 2013

Sep. 30, 2013

Jul. 18, 2013

Jul. 18, 2013

Jul. 18, 2013

Jul. 18, 2013

Minimum

Maximum

YFind

YFind

YFind

YFind

YFind

YFind

YFind

YFind

Research and Development Expense

General and Administrative Expense

Minimum

Maximum

Restricted Stock Units (RSUs)

Stock Option

Business Acquisition [Line Items]

RSUs granted to YFind employees (in shares)

219,782

Options granted to YFind employees (in shares)

51,900

Vesting period for equity awards

2 years

4 years

3 years

4 years

Fair value of equity awards

$3,600,000

Maximum obligation to pay retention bonuses

400,000

Payment period for retention bonuses

2 years

Compensation costs related to acquisition

700,000

Acquisition-related costs

200,000

Preliminary Purchase Allocation

Cash and cash equivalents

257,000

Other tangible assets

8,000

In-process research and development

6,000,000

Goodwill

9,945,000

9,031,000

914,000

Noncurrent deferred tax liabilities

-1,020,000

Other liabilities assumed

-21,000

Total purchase consideration

$6,138,000

BALANCE_SHEET_INFORMATION_Prop

BALANCE SHEET INFORMATION (Property and Equipment) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Property and Equipment
Depreciation and Amortization Expense - PPE	$1,400,000	$900,000	$3,700,000	$2,500,000
Property and equipment, gross	21,741,000		21,741,000		16,003,000
Less: accumulated depreciation and amortization	-10,702,000		-10,702,000		-7,044,000
Property and equipment, net	11,039,000		11,039,000		8,959,000
Computer hardware
Property and Equipment
Property and equipment, gross	6,392,000		6,392,000		3,413,000
Computer software
Property and Equipment
Property and equipment, gross	2,328,000		2,328,000		2,075,000
Machinery, equipment, and tooling
Property and Equipment
Property and equipment, gross	8,596,000		8,596,000		6,818,000
Furniture and fixtures
Property and Equipment
Property and equipment, gross	1,546,000		1,546,000		1,427,000
Leasehold improvements
Property and Equipment
Property and equipment, gross	$2,879,000		$2,879,000		$2,270,000

BALANCE_SHEET_INFORMATION_Sche

BALANCE SHEET INFORMATION (Schedule of Intangible Assets) (Details) (USD $)

Sep. 30, 2013

Dec. 31, 2012

Sep. 30, 2013

Sep. 30, 2012

Sep. 30, 2013

Sep. 30, 2012

Jul. 18, 2013

Sep. 30, 2013

Dec. 31, 2012

Jul. 18, 2013

Oct. 12, 2011

Sep. 30, 2013

Cost of Revenue

Cost of Revenue

Cost of Revenue

Cost of Revenue

YFind

Purchased Technology

Purchased Technology

Purchased Technology

Purchased Technology

In-process research and development [Member]

YFind

IntelliNet

Intangible Assets

Finite-Lived Intangible Assets, Gross

$6,600,000

$6,600,000

Indefinite-Lived Intangible Assets (Excluding Goodwill)

6,000,000

Intangible Assets, Gross (Excluding Goodwill)

12,600,000

Accumulated amortization

-2,599,000

-2,599,000

-1,609,000

0

Finite-lived intangible assets, net

4,001,000

4,991,000

Intangible Assets, Net (Excluding Goodwill)

10,001,000

4,991,000

Weighted average remaining useful life

3 years 0 months

3 years 10 months

Purchased technology

6,000,000

6,600,000

Amortization expense

300,000

300,000

1,000,000

1,000,000

Estimated future amortization of intangible assets eligible for amortization

4,001,000

Goodwill

$9,945,000

$9,031,000

$914,000

BALANCE_SHEET_INFORMATION_Esti

BALANCE SHEET INFORMATION (Estimated Future Amortization of Purchased Intangible Assets) (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Future Amortization of Purchased Intangible Assets by Fiscal Maturity [Abstract]
2013 (remaining three months)	$330
2014	1,320
2015	1,320
2016	$1,031

BALANCE_SHEET_INFORMATION_Comp

BALANCE SHEET INFORMATION (Components of Deferred Revenue) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Deferred Revenue, Reported As:
Current	$28,909	$36,613
Noncurrent	6,701	3,873
Deferred revenue	35,610	40,486
Product
Deferred Revenue, Reported As:
Deferred revenue	18,127	27,831
Services
Deferred Revenue, Reported As:
Deferred revenue	$17,483	$12,655

BALANCE_SHEET_INFORMATION_Defe

BALANCE SHEET INFORMATION (Deferred Revenue Arrangements) (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Dec. 31, 2012
Deferred Revenue, Reported As:
Deferred revenue	$35,610,000	$35,610,000	$40,486,000
Services
Deferred Revenue, Reported As:
Typical service support period, minimum		1 year
Typical service support period, maximum		5 years
Deferred revenue	17,483,000	17,483,000	12,655,000
Product
Deferred Revenue, Reported As:
Deferred revenue	18,127,000	18,127,000	27,831,000
Product | Future Product Rights
Deferred Revenue, Reported As:
Deferred revenue			5,200,000
Deferred revenue recognized	$2,600,000	$5,200,000

COMMITMENTS_AND_CONTINGENCIES_1

COMMITMENTS AND CONTINGENCIES (Operating Leases and Purchase Commitments) (Details) (USD $)	Sep. 30, 2013
Operating Leases, Future Minimum Payments [Abstract]
2013 (remaining three months)	$714,000
2014	3,903,000
2015	3,058,000
2016	2,352,000
2017	2,285,000
Thereafter	12,266,000
Total future minimum lease payments	24,578,000
Current purchase commitments	$5,600,000

COMMITMENTS_AND_CONTINGENCIES_2

COMMITMENTS AND CONTINGENCIES (Warranty Liabilities) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Beginning warranty liability	$751	$678	$725	$489
Changes in existing warranty	10	-86	-14	-254
Warranty expense	215	340	506	883
Obligations fulfilled	-172	-136	-413	-322
Ending warranty liability	$804	$796	$804	$796
Hardware other than indoor LAN products
Warranty
Standard Product Warranty Term			1 year 0 months
Software
Warranty
Standard Product Warranty Term			0 years 0 months 90 days

EQUITY_AWARD_PLANS_Stock_Optio

EQUITY AWARD PLANS (Stock Option Activity) (Details) (USD $)	3 Months Ended		9 Months Ended			12 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013
					Stock Options	Stock Options	RSU
Share-based Compensation Arrangement by Share-based Payment Award
Weighted Average Grant Date Fair Value (in dollars per share)	$8.33	$4.66	$11.22	$3.54
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	$24,900,000	$1,100,000	$50,500,000	$2,600,000
Shares Available for Grant
Beginning balance (shares)			6,961,000
Additional shares reserved for issuance (shares)			3,708,000
RSUs granted (shares)							-620,000
Restricted stock units forfeited (shares)							32,000
Options granted (shares)					-521,000
Options forfeited (shares)					555,000
Repurchased (shares)			1,000
Ending balance (shares)	10,116,000		10,116,000
Number of Shares
Beginning balance (shares)					24,400,000
Options granted (shares)					521,000
Options exercised (shares)					-4,071,000
Options forfeited (shares)					-555,000
Ending balance (shares)					20,295,000	24,400,000
Options vested and expected to vest (shares)					19,648,000
Options exercisable (shares)					11,323,000
Weighted Average Exercise Price
Beginning balance (in dollars per share)					$2.82
Options granted (in dollars per share)					$17.98
Options exercised (in dollars per share)					$1.23
Options forfeited (in dollars per share)					$5.02
Ending balance (in dollars per share)					$3.47	$2.82
Options vested and expected to vest (in dollars per share)					$3.38
Options exercisable (in dollars per share)					$1.93
Weighted Average Remaining Contractual Life
Weighted average remaining contractual life					7 years 3 months 10 days	7 years 8 months 19 days
Options vested and expected to vest					7 years 2 months 28 days
Options exercisable					6 years 5 months 15 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value					272,411,000	480,878,000
Options vested and expected to vest					265,414,000
Options exercisable					$168,715,000

EQUITY_AWARD_PLANS_Restricted_

EQUITY AWARD PLANS (Restricted Stock Units Activity) (Details) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Weighted-Average Grant- Date Fair Value Per Share
RSU, Weighted Average Remaining Contractual Terms	1 year 6 months	0 years
RSU
Number of Shares
Beginning balance (shares)	0
RSUs granted (shares)	620
RSUs exercised (shares)	0
RSUs forfeited (shares)	-32
Ending balance (shares)	588	0
Weighted-Average Grant- Date Fair Value Per Share
Beginning balance (in dollars per share)	0
RSUs granted (in dollars per share)	17.65
RSUs vested (in dollars per share)	0
RSUs forfeited (in dollars per share)	15.51
Ending balance (in dollars per share)	17.77	0
Aggregate Intrinsic Value
Aggregate Intrinsic Value	9,897	0
Minimum
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period for RSUs	2 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award
Vesting period for RSUs	4 years

EQUITY_AWARD_PLANS_Employee_St

EQUITY AWARD PLANS (Employee Stock Options, Assumptions) (Details) (Stock Options)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award
Volatility	68.40%	72.20%	69.60%	68.80%
Expected term (years)	6 years 1 month	6 years 0 months 11 days	6 years 0 months 18 days	6 years 0 months 11 days
Risk-free interest rate	1.71%	0.87%	1.34%	1.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%

EQUITY_AWARD_PLANS_Employee_St1

EQUITY AWARD PLANS (Employee Stock Purchase Plan) (Details) (Employee Stock Purchase Plan (ESPP))	9 Months Ended
	Sep. 30, 2013
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award
Volatility	57.60%
Expected term (years)	0 years 6 months
Risk-free interest rate	0.11%
Dividend yield	0.00%

EQUITY_AWARD_PLANS_Stockbased_

EQUITY AWARD PLANS (Stock-based Compensation Expense) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Stock options	$3,183,000	$2,402,000	$9,332,000	$5,280,000
Restricted stock units	1,252,000	0	2,116,000	0
Employee stock purchase plan	451,000	0	1,781,000	0
Total stock-based compensation	4,886,000	2,402,000	13,229,000	5,280,000
Tax benefit from stock-based compensation	-289,000	0	-469,000	0
Total stock-based compensation, net of tax effect	4,597,000	2,402,000	12,760,000	5,280,000
Compensation cost not yet recognized	33,400,000		33,400,000
Compensation cost not yet recognized, period for recognition			2 years 4 months
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	193,000	84,000	575,000	137,000
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	1,994,000	748,000	4,772,000	1,505,000
Sales and marketing
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	1,223,000	552,000	3,410,000	1,110,000
General and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs
Total stock-based compensation	$1,476,000	$1,018,000	$4,472,000	$2,528,000

COMMON_STOCK_WARRANTS_Details

COMMON STOCK WARRANTS (Details)	9 Months Ended
	Sep. 30, 2013
Class of Warrant or Right
Warrants outstanding	0
Warrant
Class of Warrant or Right
Common stock warrants exercised	295,748
Common stock issued from exercise of warrants	278,021

EARNINGS_PER_SHARE_Preferred_S

EARNINGS PER SHARE (Preferred Stock Dividends) (Details) (USD $)	9 Months Ended
	Sep. 30, 2013
Series A-1 Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	$0.01
Series B Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	0.0294
Series C Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	0.069
Series D Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	0.0876
Series E Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	0.1092
Series F Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	0.1188
Series G Preferred Stock
Class of Stock
Non-cumulative annual dividend rate, per share	$0.33

EARNINGS_PER_SHARE_Calculation

EARNINGS PER SHARE (Calculation of Basic and Diluted Net Income Per Share) (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Numerator:
Net income	$57	$5,459	$1,073	$29,832
Less: Undistributed earnings allocated to participating securities	0	-4,261	0	-22,472
Net income attributable to common stockholders	$57	$1,198	$1,073	$7,360
Denominator:
Weighted average number of shares outstanding, basic (in shares)	77,735	18,477	75,771	18,295
Weighted-average shares used in computing net income per share attributable to common stockholders:
Employee stock options	15,017	12,877	17,479	12,310
RSUs and other dilutive securities	27	222	142	192
Weighted average number of shares outstanding, diluted (in shares)	92,779	31,576	93,392	30,797
Basic (USD per share)	$0	$0.06	$0.01	$0.40
Diluted (USD per share)	$0	$0.04	$0.01	$0.24

EARNINGS_PER_SHARE_Antidilutiv

EARNINGS PER SHARE (Antidilutive Securities) (Details)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	1,355	55,564	1,373	55,562
Redeemable Convertible Preferred Stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	0	47,875	0	47,875
Employee Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	1,034	7,366	1,050	7,364
Restricted Stock Units (RSUs)
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	321	0	323	0
Warrant
Antidilutive Securities Excluded from Computation of Earnings Per Share
Shares excluded from the diluted per share calculation	0	323	0	323

INCOME_TAXES_Details

INCOME TAXES (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]
Income tax benefit	$634,000	$453,000	$918,000	$17,769,000
Tax benefit from research tax credits			600,000
Reversal of valuation allowance against DTA		$500,000		$18,000,000

SEGEMENT_INFORMATION_Details

SEGEMENT INFORMATION (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
			segment
Revenues from External Customers and Long-Lived Assets
Number of industry segments			1
Revenues	$68,928	$58,584	$190,043	$152,489
Americas
Revenues from External Customers and Long-Lived Assets
Revenues	35,537	28,915	94,914	68,147
United States
Revenues from External Customers and Long-Lived Assets
Revenues	31,254	27,240	85,233	64,923
Other Americas
Revenues from External Customers and Long-Lived Assets
Revenues	4,283	1,675	9,681	3,224
APAC
Revenues from External Customers and Long-Lived Assets
Revenues	14,766	15,306	44,286	50,544
Japan
Revenues from External Customers and Long-Lived Assets
Revenues	6,218	3,658	11,894	22,660
Other APAC
Revenues from External Customers and Long-Lived Assets
Revenues	8,548	11,648	32,392	27,884
EMEA
Revenues from External Customers and Long-Lived Assets
Revenues	18,625	14,363	50,843	33,798
United Kingdom
Revenues from External Customers and Long-Lived Assets
Revenues	7,102	6,860	20,887	13,971
Other EMEA
Revenues from External Customers and Long-Lived Assets
Revenues	$11,523	$7,503	$29,956	$19,827

SEGEMENT_INFORMATION_Property_

SEGEMENT INFORMATION (Property, Plant, and Equipment by Geographic Region) (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Segment Reporting Information
Property and equipment, net	$11,039	$8,959
United States
Segment Reporting Information
Property and equipment, net	8,000
APAC
Segment Reporting Information
Property and equipment, net	2,800
EMEA
Segment Reporting Information
Property and equipment, net	$200