Cyan (CYNI) 10-Q 13 Nov 13 2013 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2013	Nov. 12, 2013
Document Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Sep-13	'
Document Fiscal Year Focus	'2013	'
Document Fiscal Period Focus	'Q3	'
Trading Symbol	'CYNI	'
Entity Registrant Name	'CYAN INC	'
Entity Central Index Key	'0001391636	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Non-accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	46,432,882

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	$53,368	$20,221
Marketable securities	23,653	0
Accounts receivable, net	19,118	19,200
Accounts receivable, net	3,260	0
Inventories	15,733	14,049
Deferred costs	9,193	8,228
Prepaid expenses and other	1,519	930
Total current assets	125,844	62,628
Long-term lease receivable	6,520	0
Property and equipment, net	9,459	6,485
Other assets	553	1,676
Total assets	142,376	70,789
Current liabilities:	'	'
Accounts payable	14,899	11,842
Accrued liabilities	5,190	3,636
Accrued compensation	5,754	3,743
Revolving loan	0	7,563
Term loan, current portion	1,197	0
Deferred revenue	18,797	15,597
Preferred stock warrant liability	0	6,254
Other liabilities	163	74
Total current liabilities	46,000	48,709
Term loan, non-current portion	3,803	5,000
Deferred revenue	2,019	1,820
Deferred rent	226	182
Total liabilities	52,048	55,711
Commitments and contingencies (Note 5)	'	'
Redeemable convertible preferred stock issuable in series, $0.0001 par value: no shares authorized, issued or outstanding as of September 30, 2013; 35,031,602 shares authorized; 33,897,005 shares issued and outstanding as of December 31, 2012.	0	98,133
Stockholders’ equity (deficit):	'	'
Preferred stock, $0.0001 par value, 20,000,000 shares authorized and no shares issued or outstanding as of September 30, 2013; no shares authorized, issued or outstanding as of December 31, 2012.	0	0
Common stock, $0.0001 par value: 1,000,000,000 and 50,000,000 shares authorized as of September 30, 2013 and December 31, 2012; 46,287,460 and 2,575,220 shares issued and outstanding as of September 30, 2013 and December 31, 2012.	5	0
Additional paid in-capital	203,932	3,514
Accumulated other comprehensive loss	-10	-19
Accumulated deficit	-113,599	-86,550
Total stockholders’ equity (deficit)	90,328	-83,055
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	$142,376	$70,789

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Redeemable convertible preferred stock, par value	$0.00	$0.00
Redeemable convertible preferred stock, shares authorized	0	35,031,602
Redeemable convertible preferred stock, shares issued	0	33,897,005
Redeemable convertible preferred stock, shares outstanding	0	33,897,005
Preferred stock, par value	$0.00	$0.00
Preferred stock, shares authorized	20,000,000	0
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	1,000,000,000	50,000,000
Common stock, shares issued	46,287,460	2,575,220
Common stock, shares outstanding	46,287,460	2,575,220

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
Income Statement [Abstract]	'	'	'	'
Revenue	$37,694	$28,843	$95,699	$66,099
Cost of revenue	22,605	17,572	55,943	39,495
Gross profit	15,089	11,271	39,756	26,604
Operating expenses:	'	'	'	'
Research and development	9,220	4,889	24,617	12,305
Sales and marketing	10,518	6,798	29,356	17,179
General and administrative	3,895	1,741	9,853	3,887
Total operating expenses	23,633	13,428	63,826	33,371
Loss from operations	-8,544	-2,157	-24,070	-6,767
Interest expense	-55	0	-317	-20
Other income (expense), net	13	-1,041	-2,595	-1,771
Total other expense, net	-42	-1,041	-2,912	-1,791
Loss before provision for income taxes	-8,586	-3,198	-26,982	-8,558
Provision for income taxes	25	10	67	27
Net loss	($8,611)	($3,208)	($27,049)	($8,585)
Basic and diluted net loss per share	($0.19)	($1.26)	($1.06)	($3.44)
Weighted-average number of shares used in computing basic and diluted net loss per share	46,262	2,545	25,587	2,499

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Loss (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 Comprehensive Income [Abstract]	'	'	'	'
Net loss	($8,611)	($3,208)	($27,049)	($8,585)
Other comprehensive income (loss):	'	'	'	'
Foreign currency translation adjustments	-26	1	9	-4
Unrealized gains (losses) on available for sale securities	0	0	0	0
Total other comprehensive income (loss)	-26	1	9	-4
Comprehensive loss	($8,637)	($3,207)	($27,040)	($8,589)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012
Operating activities	'	'
Net loss	($27,049)	($8,585)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'
Depreciation and amortization	1,956	1,287
Stock-based compensation	5,100	1,163
Change in fair value for warrants	2,602	1,790
Changes in operating assets and liabilities:	'	'
Accounts receivable	82	-11,359
Lease receivable	-9,780	0
Inventories	-1,684	-7,372
Deferred costs	-965	-6,051
Prepaid expenses and other	-589	-478
Accounts payable	4,075	10,058
Accrued liabilities	1,577	1,112
Accrued compensation	2,011	1,399
Deferred revenue	3,399	11,041
Net cash used in operating activities	-19,265	-5,995
Investing activities	'	'
Purchases of property and equipment	-4,437	-3,681
Purchase of available for sale securities	-23,653	0
Purchase of other investment	-500	0
Net cash used in investing activities	-28,590	-3,681
Financing activities	'	'
Proceeds from initial public offering, net of underwriting discount and issuance expenses	87,348	0
Proceeds from issuance of common stock	1,209	70
Repayments of borrowings under notes payable	-7,563	-45
Net cash provided by financing activities	80,994	25
Effect of exchange rate changes on cash and cash equivalents	8	5
Net increase (decrease) in cash and cash equivalents	33,147	-9,646
Cash and cash equivalents at beginning of period	20,221	25,740
Cash and cash equivalents at end of period	53,368	16,094
Supplemental disclosures of cash flow information	'	'
Cash paid for interest	311	20
Non-cash Investing and financing activities	'	'
Property and equipment included in accounts payable	395	887
Conversion of convertible preferred stock into common stock	98,133	0
Conversion of preferred stock warrant into common stock and common stock warrants	$8,856	$0

Organization_and_Significant_A

Organization and Significant Accounting Policies	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Organization and Significant Accounting Policies	'
	Organization and Significant Accounting Policies
	Description of the Business — Cyan, Inc. (Cyan or the Company) was incorporated on October 25, 2006, in the state of Delaware and its principal executive offices are located in Petaluma, California. The Company has pioneered innovative, carrier-grade networking solutions that transform disparate and inefficient legacy networks into open, high-performance networks. The Company’s solutions include high-capacity, multi-layer switching and transport platforms as well as a carrier-grade software-defined networking platform and applications. The Company’s solutions enable its customers to virtualize their networks, accelerate service delivery and increase scalability and performance while reducing costs. The Company designed its solutions to provide a variety of existing and emerging premium applications including business Ethernet, wireless backhaul, broadband backhaul and cloud connectivity. The Company’s customers range from service providers to high-performance data center and large, private network operators.
	Initial Public Offering — In May 2013, the Company closed its initial public offering (IPO) whereby 8,899,022 shares of common stock were sold to the public, including 899,022 shares of common stock pursuant to the partial exercise of an overallotment option granted to the underwriters. The aggregate net proceeds received by the Company from the offering were $87.4 million, net of underwriting discounts and commissions and issuance expenses. Upon the closing of the IPO, all shares of the Company’s outstanding convertible preferred stock automatically converted into 33,897,005 shares of common stock. In addition, certain warrants to purchase shares of convertible preferred stock were exercised resulting in the issuance of 792,361 shares of common stock and the remaining outstanding warrants to purchase convertible preferred stock were converted into warrants to purchase 115,001 shares of common stock.
	Basis of Preparation — The Company's condensed consolidated financial statements include its accounts and the accounts of its wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated. The accompanying condensed consolidated balance sheet as of September 30, 2013, the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012, the condensed consolidated statements of comprehensive loss for the three and nine months ended September 30, 2013 and 2012, and the condensed consolidated statements of cash flows for the nine months ended September 30, 2013 and 2012 are unaudited. The accompanying condensed consolidated balance sheet as of December 31, 2012 was derived from the audited consolidated balance sheet as of December 31, 2012. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2012 contained in the Company's registration statement on Form S-1.
	The accompanying condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (GAAP) for interim financial information, and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial statements. They do not include all of the financial information and footnotes required by GAAP for complete financial statements. Management believes that the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and include all adjustments necessary for the fair presentation of the Company's balance sheet as of September 30, 2013, the results of operations and comprehensive income (loss) for the three and nine months ended September 30, 2013 and 2012 and the cash flows for the nine months ended September 30, 2013 and 2012. All adjustments are of a normal recurring nature. The results for the three and nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for any subsequent interim period or for the year ending December 31, 2013.
	Aside from the addition of our accounting policy surrounding lease receivables, we believe there have been no material changes to our critical accounting policies and estimates during the nine months ended September 30, 2013 compared to those discussed in our registration statement on Form S-1.
	Use of Estimates — The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses for the reporting period. For the Company, these estimates include, but are not limited to, allowances for doubtful accounts, excess and obsolete inventory, allowances for obligations to its contract manufacturer, useful lives assigned to long-lived assets, the valuation of options, common and redeemable convertible preferred stock and related warrants, warranty costs and contingencies. Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.
	Credit Risk and Concentrations — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, trade receivables and lease receivables.
	Cash and Cash equivalents consist of cash and money market funds that are invested through financial institutions in the United States. Such deposits may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. Management believes that the financial institutions that hold the Company’s cash and cash equivalents are financially sound and, accordingly, minimal credit risk exists with respect to these cash and cash equivalents.
	Marketable securities, which are classified as available for sale at September 30, 2013 include U.S. treasury securities, U.S. government-sponsored agency securities, commercial paper, corporate bonds and municipal bonds. Investment policies have been implemented that limit marketable securities to investment grade securities. Generally, the Company's marketable securities have maturity dates up to two years from the date of purchase and active markets for these securities exist.
	Concentrations of credit risk with respect to trade receivables exist to the full extent of amounts presented in the financial statements. The Company performs ongoing credit evaluations of its customers and generally does not require collateral from its customers to secure trade receivables. Trade receivables are derived from sales to customers located primarily in the United States. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company records a specific allowance based on an analysis of individual past-due balances, including evaluations of its customers’ financial condition. Additionally, based on its historical write-offs and collections experience, the Company records an additional allowance based on a percentage of outstanding receivables. These valuations require significant judgment and are based on a variety of factors, including, but not limited to, current economic trends, payment history and financial review of the customer. Actual collection losses may differ from management’s estimates, and such differences could be material to the Company’s consolidated financial position and results of operations. The Company had no allowance for doubtful accounts recorded as of December 31, 2012 and $0.3 million allowance for doubtful accounts recorded as of September 30, 2013.
	The Company provides leasing arrangements for certain qualified end-user customers. The Company classifies these arrangements as lease receivables, which represent sales-type leases resulting from the sale of the Company’s products. Lease receivables consist of arrangements with the Company's customers, which generally have three year terms. The Company retains title to the underlying assets for the term of the lease. The Company assesses the allowance for credit loss related to lease receivables on an individual basis. If applicable, the Company maintains an allowance for credit losses resulting from the inability or unwillingness of its customers to make required payments. The Company records a specific allowance based on an analysis of individual past-due balances, including evaluations of the customers’ financial condition. These valuations require significant judgment and are based on a variety of factors, including but not limited to, current economic trends, payment history, and financial review of the customer.
	Outstanding leasing receivables that are aged 30 days or more from the contractual payment date are considered past due. Leasing receivables may be placed on nonaccrual status earlier if, in management’s opinion, a timely collection of the full principal and interest becomes uncertain. After a lease receivable has been categorized as nonaccrual, interest will be recognized when cash is received. A lease receivable may be returned to accrual status after all of the customer’s delinquent balances of principal and interest have been settled and the customer remains current for an appropriate period.
	In addition, when the evaluation indicates that it is probable that all amounts due pursuant to the contractual terms of the lease agreement, including scheduled interest payments, are unable to be collected, the leasing receivable is considered impaired. All such outstanding amounts, including any accrued interest, will be assessed and fully reserved at the individual customer level. Lease receivables are written off at the point when they are considered uncollectible and all outstanding balances, including any previously earned but uncollected interest income, will be reversed and charged against the allowance for credit losses.
	Actual collection losses may differ from management’s estimates, and such differences could be material to Company’s consolidated financial position and results of operations. The Company had no lease receivables as of December 31, 2012. As of September 30, 2013 the Company had $9.8 million of lease receivables and no allowance for credit losses as of that date.
	The Company depends on its contract manufacturer for its finished goods inventory. The Company operates under a manufacturing services agreement with its contract manufacturer pursuant to which the Company is to provide a rolling quarterly forecast indicating the Company’s monthly production requirements. While the Company seeks to maintain sufficient inventory on hand, the Company’s business and results of operations could be adversely affected by a stoppage or delay in receiving such products, the receipt of defective parts, an increase in the price of such products, or the Company’s inability to obtain lower prices from its contract manufacturer and suppliers in response to competitive pressures.
	Inventories — Inventories consisting of finished goods purchased from the contract manufacturer are stated at the lower of cost or market value, with cost being determined using standard cost, which approximates actual cost, on a first-in, first-out basis. The Company regularly monitors inventory quantities on hand and on order and records write-downs as a component of cost of revenue for excess and obsolete inventories based on the Company’s estimate of the demand for its products, potential obsolescence of technology, product life cycles, and whether pricing trends or forecasts indicate that the carrying value of inventory exceeds its estimated selling price. These factors are affected by market and economic conditions, technology changes, and new product introductions and require estimates that may include elements that are uncertain. Actual demand may differ from forecasted demand and may have a material effect on gross margins. If inventory is written down, a new cost basis will be established that cannot be increased in future periods.
	Revenue Recognition — Revenue is recognized when all of the following criteria are met:
	•	Persuasive evidence of an arrangement exists. Customer purchase orders, along with master purchase contracts, where applicable, are generally used to determine the existence of an arrangement.
	•	Delivery has occurred. Shipping documents and customer acceptance, when applicable, are used to verify delivery.
	•	The price is fixed or determinable. The Company assesses whether the price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment.
	•	Collectability is reasonably assured. The Company assesses collectability based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history.
	The Company derives revenue primarily from the sales of its hardware and software products as well as professional services. Shipping charges billed to customers are included in revenue.
	From time to time, the Company offers customers sales incentives, including discounts. Revenue is recorded net of these amounts.
	Customer payment terms are generally net 30 days. The Company generally does not offer extended payment terms.
	A portion of the Company’s sales are made through multi-year lease agreements.  These lease agreements include a bargain purchase option and meet the criteria for treatment as sales-type leases. Under sales-type leases, the Company recognizes revenue for its hardware products, net of post-installation product maintenance and technical support, at the net present value of the lease payment stream at the point in time the lessee has the right to use the underlying asset (either once the Company’s installation obligations have been met, or upon shipment if no such installation obligation exists).  The Company seeks to optimize its cash flows by selling a majority of its lease receivables to third party financing organizations on a non-recourse basis.  Aside from its standard product warranty, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Some of the Company’s sales-type leases may remain unsold at any particular period end.
	In general, the Company’s products and services qualify as separate units of accounting. Products are typically considered delivered upon shipment. In certain cases, the Company’s products are sold along with services, which include installation, training, remote network monitoring services, post-sales software support, software-as-a-service (SaaS) based subscriptions, and/or extended warranty services. Post-sales software support includes rights, on a when-and-if-available basis, to receive unspecified software product upgrades to embedded software or the Company’s management software; maintenance releases; and patches released during the term of the support contract. This type of transaction is considered a multiple-element arrangement. When accounting for multiple-element arrangements, GAAP requires the Company to allocate revenue to individual elements using vendor-specific objective evidence (VSOE), third-party evidence (TPE), or its best estimated selling price (BESP) of deliverables if VSOE or TPE cannot be determined.
	Multiple-element arrangements can include any combination of products and services. When allocating consideration, the Company will first do so on the basis of the deliverables’ relative selling prices, without regard to any contingent consideration, and then subsequently determine whether the revenue that may be recognized is limited based on the amount of non-contingent revenue. To the extent that the stated contractual prices agree to the Company’s estimated selling price on a standalone basis, the allocation of the consideration is based on stated contractual prices. However, if the stated contractual price for any deliverable is outside a narrow range of the estimated selling price on a standalone basis, the allocation is adjusted using the “relative-selling-price method.” Because the individual products and services meet the criteria for separate units of accounting, the Company will recognize revenue for each element upon delivery of the element.
	The Company has not yet established VSOE for all deliverables in its arrangements with multiple elements. When VSOE cannot be established, the Company attempts to establish the selling price of each element based upon TPE by evaluating the pricing of similar and interchangeable competitor products or services in standalone arrangements. However, as the Company’s products contain a significant element of proprietary technology and offer substantially different features and functionality from competitors, the Company has not been able to obtain comparable pricing information with respect to competitors’ products. Therefore, the Company has not been able to obtain reliable evidence of TPE.
	When the Company is unable to establish a selling price using VSOE or TPE, the Company uses BESP. The objective of BESP is to determine the price at which the Company would transact a sale if the element were sold on a standalone basis. BESP is primarily used for all elements for which the Company has historically not been able to establish VSOE or TPE.
	The Company determines BESP for an element by considering multiple factors, including, but not limited to, geographies, market conditions, competitive landscape, internal costs, gross margin objectives, characteristics of targeted customers, and pricing practices. The determination of BESP is made through consultation with and formal approval by the Company’s management, taking into consideration the go-to-market strategy. The Company regularly reviews VSOE, TPE, and BESP and has a process for the establishment and updating of these estimates.
	Post-sales software support revenue and extended warranty services revenue are deferred and recognized ratably over the period during which the services are to be performed. Installation and training service revenues are recognized upon delivery or completion of performance. These service arrangements are typically short-term in nature and are largely completed shortly after delivery of the product.
	The Company also delivers software-defined networking solutions to customers most frequently on a term license basis, with terms typically ranging from 12 to 36 months. While term-based licenses make up the majority of related revenues, the Company occasionally licenses software to customers on a perpetual basis with on-going support and maintenance services. Revenue from software that functions together with the tangible hardware elements to deliver the tangible products’ essential functionality is generally recognized upon shipment assuming all other revenue recognition criteria are met.  Revenue from application software and related software elements which are not considered essential to the functionality of hardware is accounted for in accordance with software industry guidance, and therefore is recognized ratably over the longest service period for post-contract customer support, or PCS, and professional services as the Company has not established VSOE for software or the related software elements.
	In instances where substantive acceptance provisions are specified in the customer agreement, revenue is deferred until all acceptance criteria have been met. The Company’s arrangements generally do not include any provisions for cancellation, termination or refunds that would materially impact revenue recognition.
	The Company enters into arrangements with certain of its customers who receive government supported loans and grants from the U.S. Department of Agriculture’s Rural Utility Service (RUS) to finance capital spending. Under the terms of an RUS equipment contract that includes installation services, the customer does not take possession and control and the title does not pass until formal acceptance is obtained from the customer. Under this type of arrangement, the Company does not recognize revenue until it has received formal acceptance from the customer and all other revenue recognition criteria have been met.
	When the Company’s products have been delivered but the product revenue associated with the arrangement has been deferred as a result of not meeting the revenue recognition criteria, the related product costs are also deferred and included in deferred costs in the accompanying consolidated balance sheets.
	Warranties — The Company offers limited warranties for its hardware products for periods of one to eight years. The Company recognizes estimated costs related to warranty activities as a component of cost of revenue upon product shipment. The estimates are based upon historical product failure rates and historical costs incurred in correcting product failures. The recorded amount is adjusted from time to time for specifically identified warranty exposures. Actual warranty expenses are charged against the Company’s estimated warranty liability when incurred. Factors that affect the Company’s liability include the number of installed units, historical and anticipated rates of warranty claims and the cost per claim.
	Additionally, the Company offers separately priced extended warranty contracts for coverage beyond the standard warranty period. The Company expenses all warranty costs as incurred related to such extended warranty contracts.
	Income Taxes — The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities using enacted tax rates in effect for the years in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws is recognized in the consolidated statement of operations in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred income tax assets to the amounts more-likely-than-not expected to be realized.
	As part of the process of preparing the consolidated financial statements, the Company is required to estimate income tax expense and uncertain tax positions in each of the tax jurisdictions in which the Company operates. This process involves estimating current income tax expense together with assessing temporary differences in the treatment of items for tax purposes versus financial accounting purposes that may create net deferred tax assets and liabilities. The Company relies on estimates and assumptions in preparing its income tax provision.
	The Company is subject to periodic audits by the Internal Revenue Service and other taxing authorities. The Company recognizes the tax benefit of an uncertain tax position only if it is more-likely-than-not that the position is sustainable upon examination by the taxing authority based on the technical merits. The tax benefit recognized is measured as the largest amount of benefit which is greater than 50 percent likely to be realized upon settlement with the taxing authority. The Company recognizes interest accrued and penalties related to unrecognized tax benefits in the income tax provision.
	Stock – Based Compensation —The Company measures and recognizes stock-based compensation expense in the financial statements for all share-based payment awards made to employees and directors based on the estimated fair values on the date of grant using the Black- Scholes option-pricing model.
	The Company’s determination of the fair value of a share based payment award on the date of grant using the Black-Scholes option pricing model is affected by assumptions regarding a number of highly complex and subjective variables. These variables include the Company’s expected stock price volatility over the expected term of the awards, stock option exercise and cancellation behaviors, risk-free interest rates and expected dividends.
	New Accounting Pronouncements — The Financial Accounting Standards Board issued Accounting Standards Update (ASU) 2013-11, "Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists" on July 18, 2013. The ASU concludes an unrecognized tax benefit should be presented as a reduction of a deferred tax asset when settlement in this manner is available under the law. The Company will adopt this amendment as of January 2014. Management does not believe that the impact on the balance sheet will be significant.

Fair_Value_Disclosure

Fair Value Disclosure	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Disclosure	'
	Fair Value Disclosure
	Assets and liabilities recorded at fair value in the 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. 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:    Inputs are unadjusted quoted prices in active markets for identical assets or liabilities at the measurement date.
	Level 2:    Inputs (other than quoted market prices included in Level 1) are either directly or indirectly observable for the asset or liability through correlation with market data at the measurement date and for the duration of the instrument’s anticipated life.
	Level 3:    Inputs reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. Consideration is given to the risk inherent in the valuation technique and the risk inherent in the inputs to the model.
	Cash Equivalents
	Where quoted prices are available in an active market, cash equivalents are classified within Level 1 of the valuation hierarchy. Cash equivalents classified in Level 1 at December 31, 2012 and September 30, 2013 include money market funds. The valuation of these instruments is determined using a market approach and is based upon unadjusted quoted prices for identical assets in active markets.
	Marketable Securities
	Marketable securities, which are classified as available for sale at September 30, 2013 are carried at fair value, with any unrealized gains and losses, net of tax, reported as a separate component of stockholders’ equity. Marketable securities consist of U.S treasury securities, U.S. government-sponsored agency securities, municipal bonds, corporate bonds and commercial paper.
	The fair value of the Company's marketable securities is determined as the exit price in the principal market in which it would transact. Level 1 instruments are valued based on quoted market prices in active markets and include U.S treasury securities. Level 2 instruments are valued based on quoted prices in markets that are not active, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency and include U.S. government-sponsored agency securities, municipal bonds, corporate bonds and commercial paper. Level 3 instruments are valued based on unobservable inputs that are supported by little or no market activity and reflect the Company's own assumptions in measuring fair value. As of September 30, 2013 and December 31, 2012 the Company had no marketable securities classified within Level 3 of the fair value hierarchy.
	The Company's marketable securities have maturity dates up to two years from the date of purchase and active markets for these securities exist. As of September 30, 2013, based on contractual maturity, the Company had $15.0 million and $8.7 million of marketable securities maturing within one and two years, respectively. The Company classifies its available-for-sale marketable securities as short-term marketable securities in its consolidated balance sheet based on management's intention to have the funds available for use in operations or strategic investments rather than actual maturity dates.
	Preferred Stock Warrant Liabilities
	Previously, the Company estimated the fair value of preferred stock warrants at the respective balance sheet dates using the Black-Scholes option-pricing model based on the market value of the underlying redeemable convertible preferred stock at the valuation measurement date, the remaining contractual term of the warrant, risk-free rates, expected dividends and the expected volatility of the price of the underlying redeemable convertible preferred stock. Because this model includes significant unobservable inputs, preferred stock warrant liabilities are classified within Level 3 of the valuation hierarchy.
	Fair Value Hierarchy
	The following tables set forth by level, within the fair value hierarchy, the Company’s assets and liabilities at fair value as of September 30, 2013 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	47,906		$	—		$	—		$	47,906
	Marketable Securities:
	Commercial paper		$	—		$	13,179		$	—		$	13,179
	Corporate bonds		$	—		$	3,387		$	—		$	3,387
	Municipal bonds		$	—		$	1,025		$	—		$	1,025
	U.S. government-sponsored agency securities		$	—		$	2,027		$	—		$	2,027
	U.S. treasury securities		$	4,035		$	—		$	—		$	4,035
	Total marketable securities		$	4,035		$	19,618		$	—		$	23,653
	The following tables set forth by level, within the fair value hierarchy, the Company’s assets and liabilities at fair value as of December 31, 2012 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	4,544		$	—		$	—		$	4,544
	Liabilities:
	Preferred stock warrants		$	—		$	—		$	6,254		$	6,254
	The company performed the final re-measurement of the convertible preferred stock warrant in connection with the completion of its IPO in May 2013 at which time the warrants remaining outstanding became exercisable for common stock, and reclassified the warrant from other current liabilities to additional paid-in capital.
	There were no transfers of assets and liabilities measured at fair value between Level 1 and Level 2, or between Level 2 and Level 3, during the nine months ended September 30, 2013.
	The following table shows the Company’s available-for-sale securities amortized cost, gross unrealized gains, gross unrealized losses and fair value as of September 30, 2013 (in thousands):
		Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
	Marketable securities:
	Commercial paper	$	13,180		$	—		$	(1	)	$	13,179
	Corporate bonds	3,387			—			—			3,387
	Municipal bonds	1,026			—			(1		)	1,025
	U.S. government-sponsored agency securities	2,027			—			—			2,027
	U.S. treasury securities	$	4,033		$	2		$	—		$	4,035
	Total marketable securities	$	23,653		$	2		$	(2	)	$	23,653
	The Company regularly reviews its marketable securities portfolio to identify and evaluate such instruments that have indications of possible impairment.
	As of September 30, 2013 no marketable securities have been in a continuous unrealized loss position for more than twelve months. The gross unrealized loss was primarily due to changes in interest rates. The gross unrealized loss on all available-for-sale marketable securities as of September 30, 2013 was considered temporary in nature. Factors considered in determining whether a loss is temporary include, but are not limited to, the length of time and extent to which fair value has been less than the cost basis and the financial condition and near-term prospects of the investee.
	The Company has evaluated its marketable securities portfolio as at September 30, 2013 and has determined that none of its marketable securities are impaired.

Balance_Sheet_Components

Balance Sheet Components	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Balance Sheet Components	'
	Balance Sheet Components
	Cash and Cash equivalents
	Cash and cash equivalents consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Cash	$	5,462		$	15,677
	Money market funds	47,906			4,544
	Total cash and cash equivalents	$	53,368		$	20,221
	Lease Receivables
	A summary of the Company’s lease receivables is presented as follows (in thousands):
		30-Sep-13			December 31, 2012
	Net minimum lease payments to be received	$	10,612		$	—
	Less unearned interest income portion	832			—
	Total lease receivable	9,780			—
	Less short-term lease receivable	3,260			—
	Long-term lease receivable	$	6,520		$	—
	Contractual maturities of the gross lease receivables as at September 30, 2013 are summarized as follows (in thousands):
	Year ending December 31:
	2013	$	1,107
	2014	3,456
	2015	3,456
	2016	2,593
		$	10,612
	Actual cash collections may differ from the contractual maturities due to early customer buyouts, refinancings, or defaults.
	Inventory
	Inventories consisted of finished goods purchased from the contract manufacturer and are stated at the lower of cost (on a first-in, first-out basis) or market value. Inventory consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Raw materials	$	699		$	557
	Finished goods	15,034			13,492
	Total Inventory	$	15,733		$	14,049
	Property and Equipment, Net
	Property and equipment, net consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Lab equipment and tooling	$	13,019		$	8,991
	Software	617			567
	Leasehold improvements	1,189			876
	Furniture and fixtures	825			413
	Computer equipment	848			719
		16,498			11,566
	Less accumulated depreciation and amortization	$	(7,039	)	(5,081		)
	Property and equipment, net	$	9,459		$	6,485
	For the three and nine months ended September 30, 2013 and 2012, depreciation and amortization expense on property and equipment was $0.7 million, $2.0 million, $0.5 million and $1.3 million.
	Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Inventory-in-transit	$	625		$	323
	Warranty reserve (1)	1,715			1,266
	Professional fees	1,817			921
	Sales and use taxes	732			627
	Other	301			499
	Total accrued liabilities	$	5,190		$	3,636
	-1	Activity related to warranties is as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Beginning balance	$	1,784		$	979		$	1,266		$	783
	Charge to cost of sales	400			324			1,526			813
	Costs incurred	(469		)	(176		)	(1,077		)	(469		)
	Closing balance	$	1,715		$	1,127		$	1,715		$	1,127

Debt

Debt	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	Loan and Security Agreement
	On December 21, 2012, the Company entered into a Loan and Security Agreement with Silicon Valley Bank (“SVB”). The agreement provided for a revolving loan facility of up to $10.0 million and a term loan facility of up to $5.0 million, for a total loan facility of up to $15.0 million. As of December 31, 2012 and September 30, 2013, the Company had drawn down $5.0 million and $5.0 million as term loans and $7.6 million and zero as revolving loans, respectively.
	Revolving loans bear interest at a floating rate equal to the greater of (i) 3.25% or (ii) the prime rate (3.25% as of both December 31, 2012 and September 30, 2013). For the first 12 months following each term loan advance, each term loan advance bears interest at a floating rate equal to the prime rate, plus 0.50%. Thereafter, each term loan advance bears interest at a fixed rate equal to the prime rate on the date following such 12 month period, plus 0.50%.
	Interest on the revolving loans and the term loans is due and payable monthly in arrears. Revolving loans may be borrowed, repaid and reborrowed until December 21, 2014, when all outstanding amounts must be repaid. Principal on each term loan advance is payable in 36 equal monthly installments beginning 12 months after the date on which such term loan advance is made. Prepayments of the term loan facility prior to its termination dates will be subject to early termination fees, subject to certain exceptions. There is no commitment fee associated with the revolving loan.
	The Company is obligated to pay customary fees for a loan facility of this size and type. The Company’s obligations under the loan facility are secured by a security interest on substantially all of its assets, excluding the Company’s intellectual property and certain other assets. Additionally, the Company’s future domestic subsidiaries, if any, may be required to become co-borrowers or guarantors under the loan facility.
	The Loan and Security Agreement contains customary affirmative and negative covenants limiting the Company’s ability and the ability of its subsidiaries to, among other things, dispose of assets, undergo a change in control, merge or consolidate, make acquisitions, incur debt, incur liens, pay dividends, repurchase stock and make investments, in each case subject to certain exceptions. The Company must also comply with a minimum adjusted quick ratio financial covenant which is the ratio of its unrestricted cash and net billed accounts receivable to its current liabilities minus the current portion of deferred revenue.
	The Loan and Security Agreement also contains customary events of default including, among others, payment defaults, breaches of covenants, investor abandonment, bankruptcy and insolvency events, cross defaults with certain material indebtedness, judgment defaults, and breaches of representations and warranties. Upon an event of default, SVB may declare all or a portion of the Company’s outstanding obligations payable to be immediately due and payable and exercise other rights and remedies provided for under the agreement. During the existence of an event of default, interest on the obligations could be increased by 5.0%.
	As of December 31, 2012 and September 30, 2013, the Company was in compliance with all covenants.
	The estimated principal payments of the term loan are as follows (in thousands):
	Year ending December 31:
	2013	$	—
	2014	1,604
	2015	1,666
	2016	1,730
		$	5,000

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Facility Lease and Related Party Transaction
	In April 2007, the Company entered into a six-year lease agreement for office premises in Petaluma, California. This agreement has scheduled expiration dates of May 2015 and October 2018, providing the Company a total of 22,780 square feet.
	In July, 2013 the Company entered into a commercial building lease agreement for additional space in Petaluma, California. The July 2013 lease has a ten year term, estimated to commence on or about June 1, 2014 and provides for the lease by the Company of 20,005 square feet, going to 38,778 square feet in 2015. Base rent is initially set at $46,012 per month and increases to $91,904 per month when the additional space is occupied. Total base rent payable over the 10 year lease period is $11.5 million. The Company has an option to extend the term of the lease for an additional five year period.
	In relation to these lease agreements, an executive officer, who is also a member of the Company’s board of directors and a greater than 5% stockholder of the Company, owns approximately 40% of the limited liability company from which the Company is leasing the buildings. As of December 31, 2012 and September 30, 2013 no amounts were included in accounts payable or accrued expenses under these agreements.
	As of both December 31, 2012 and September 30, 2013 total deferred rent was $0.3 million. For the three months ended September 30, 2013 and 2012, rent expense was $0.3 million and $0.2 million, respectively. For the nine months ended September 30, 2013 and 2012, rent expense was $0.8 million and $0.5 million, respectively.
	Future minimum annual obligations under non-cancellable lease agreements as of September 30, 2013 are approximately as follows (in thousands):
	Year ending December 31:
	2013	$	257
	2014	1,238
	2015	1,294
	2016	1,200
	2017	1,331
	Thereafter	8,522
	Total	$	13,842
	Contingencies
	From time to time in the normal course of business, the Company is subject to various legal matters. There were no such matters as of the date of this report.
	Guarantees
	The Company from time to time enters into certain types of contracts that contingently require it to indemnify various parties against claims from third parties. These contracts primarily relate to (i) certain real estate leases, under which the Company may be required to indemnify property owners for environmental and other liabilities, and other claims arising from the Company’s use of the applicable premises; (ii) certain agreements with the Company’s officers, directors, and employees, under which the Company may be required to indemnify such persons for liabilities arising out of their relationship with the Company; (iii) contracts under which the Company may be required to indemnify customers against third-party claims that a Company product infringes a patent, copyright, or other intellectual property right; and (iv) procurement or license agreements, under which the Company may be required to indemnify licensors or vendors for certain claims that may be brought against them arising from the Company’s acts or omissions with respect to the supplied products or technology.
	Generally, a maximum obligation under these contracts is not explicitly stated. Because the obligated amounts associated with these types of agreements are not explicitly stated, the overall maximum amount of the obligation cannot be reasonably estimated. Historically, the Company has not been required to make payments under these obligations, and no liabilities have been recorded for these obligations in the Company’s consolidated balance sheet.
	Contract Manufacturer
	As of December 31, 2012, and September 30, 2013, the Company has commitments to its contract manufacturer of $6.6 million and $9.2 million, respectively. Should the Company be required to pay under this guarantee, the Company has the right to obtain and liquidate the related inventory to recover amounts paid under the guarantee.

Redeemable_Convertible_Preferr

Redeemable Convertible Preferred Stock and Warrants	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Redeemable Convertible Preferred Stock and Warrants	'
	Redeemable Convertible Preferred Stock and Warrants
	Upon the closing of the IPO, all outstanding shares of convertible preferred stock were converted into shares of common stock on a one-for-one basis.
	Convertible Preferred Stock Warrants
	On various dates throughout 2007, 2008 and 2009, the Company issued warrants to purchase 12,806 shares of Company’s Series A Preferred Stock and 102,195 shares of Company’s Series B Preferred Stock at exercise prices of $1.29 and $2.45 per share, respectively. These warrants were exercisable on various dates throughout 2013, 2014 and 2015.
	Upon closing of the IPO, warrants to purchase 894,596 shares of convertible preferred stock were net exercised resulting in the issuance of 792,361 shares of common stock. Warrants to purchase 115,001 shares of convertible preferred stock were converted into warrants to purchase common stock at the original exercise price per share. At September 30, 2013, there were warrants to purchase an aggregate of 115,001 shares of common stock outstanding.
	Prior to the closing of the IPO, the Company re-measured the fair value of the preferred stock warrants at each balance sheet date. The fair value of the outstanding warrant was classified within current liabilities on the consolidated balance sheets, and any changes in fair value were recognized as a component of other income (expenses), net in the consolidated statements of operations.
	Upon the closing of the IPO, the preferred stock warrant liability was reclassified from current liabilities to stockholders’ equity and the Company will no longer record any mark-to-market changes in the fair value of the remaining outstanding common stock warrants. The Company performed the final re-measurement of the warrant in connection with the completion of the IPO in May 2013.
	The fair value of the outstanding preferred stock warrants was determined using the Black-Scholes-Merton option-pricing model. The fair value of the preferred stock warrant was estimated using the following assumptions for the periods presented below:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
	Expected term (years)	—		1.14 - 3.74			0.48 - 3.24			1.14 - 4.24
	Volatility	—		55	%		55	%		55	%
	Risk-free interest rate	—		0.23 - 0.62%			0.22 - 0.68%			0.23 - 1.04%
	Dividend yield	—		—			—			—
	The change in the fair value of the convertible preferred stock warrant liability during the periods presented was summarized below (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013			2012				2013			2012
	Opening balance	$	—		$	1,642			$	6,254		$	900
	Increase in Fair Value	—			1,048				2,602			1,790
	Reclassification of warrant to additional paid-in capital	—			—				(8,856		)	—
	Closing balance	$	—		$	2,690			$	—		$	2,690

Common_Stock

Common Stock	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Common Stock	'
	Common Stock
	Initial Public Offering
	In May 2013, the Company completed its initial public offering of its common stock to the public whereby 8,899,022 shares of common stock were sold by the Company, including 899,022 shares of common stock issued upon the partial exercise of the overallotment option granted to the underwriters. The public offering price of the shares sold in the offering was $11.00 per share.
	The total gross proceeds from the offering to the Company were $97.9 million. After deducting underwriters’ discounts and commissions and offering expenses, the aggregate net proceeds received by the Company totaled approximately $87.4 million. Immediately prior to the closing of the IPO, all shares of the Company’s outstanding redeemable convertible preferred stock automatically converted into 33,897,005 shares of common stock. As of September 30, 2013, the Company had 46,287,460 common shares issued and outstanding.
	Change in Authorized Stock
	In March 2013, the Company’s board of directors and stockholders approved an amended and restated certificate of incorporation that became effective in connection with the completion of the IPO. Upon completion of the IPO, the authorized common stock was 1,000,000,000 shares and authorized undesignated preferred stock was 20,000,000 shares.
	Employee Stock Options
	In March 2013, the Company’s board of directors and stockholders approved the 2013 Equity Incentive Plan. A total of 3,600,000 shares of common stock were initially reserved for future issuance under the 2013 Equity Incentive Plan plus any shares of common stock reserved for issuance under the 2006 Stock Plan at the time of completion of the initial public offering and any shares of common stock which are forfeited, canceled or terminated (other than by exercise) under the Company’s 2006 Stock Plan, up to an aggregate of 11,400,000 shares rolled over from the 2006 Stock Plan.
	A summary of the activity and changes during the reporting periods and a summary of information related to options exercisable, vested, and expected to vest are presented below:
		Shares		Number of			Weighted				Weighted	Aggregate
		Available		Shares			Average				Average	Intrinsic
		for Grant		Outstanding			Exercise				Remaining	Value (in
							Price				Contractual	thousands)
											Life (Years)
	Balance at December 31, 2012	1,242,353		10,212,760			$	2.49			8.4	59,456
	Options reserved	4,600,000		—			—
	Options granted	(3,309,273	)	3,309,273			$	9.59
	Options exercised	—		(123,852	)		$	1.75
	Options forfeited	565,218		(565,218	)		$	4.16
	Balance at September 30, 2013	3,098,298		12,832,963			$	4.25			8.14	75,425
	Options vested and expected to vest - September 30, 2013			12,475,894			$	4.11			8.1	$	75,057
	Options exercisable - September 30, 2013			4,943,254			$	1.94			6.83	$	40,107
	The fair value of options granted to employees during the year ended December 31, 2012 and the three and nine month ended September 30, 2013 was approximately $13.3 million, $2.5 million and $17.3 million, respectively. The Company determined the fair value of each option grant on the date of grant using the Black-Scholes option-pricing model using the following factors:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
	Expected term (years)	6.08		6.08			6.08			6.08
	Volatility	48	%	55	%		48 - 55%			55	%
	Risk-free interest rate	1.4 - 1.65%		0.62 - 0.71%			0.7 - 1.65%			0.62 - 1.02%
	Dividend yield	—		—			—			—
	The expected term of stock options was estimated based on the simplified method that takes into consideration the vesting and contractual terms. Volatility is estimated based on the average of the historical volatilities of the common stock of the Company’s peer group in the industry in which the Company does business, with characteristics similar to those of the Company. The Company uses the U.S. Treasury yield for its risk-free interest rate and a dividend yield of zero, as it does not issue dividends.
	The estimated forfeiture rate is based on an analysis of actual forfeitures and will continue to be evaluated based on actual forfeiture experience, analysis of employee turnover behavior, and other factors. Further, to the extent the Company’s actual forfeiture rate is different from this estimate, stock- based compensation is adjusted accordingly.
	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of operations (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013			2012				2013			2012
	Cost of revenue	$	61		$	9			$	121		$	25
	Research and development	773			163				1,684			384
	Sales and marketing	571			169				1,444			372
	General and administrative	793			225				1,851			382
	Total employee stock-based compensation	$	2,198		$	566			$	5,100		$	1,163
	The weighted-average fair value per share of options granted was $2.15, $4.76 and $5.24 for the year ended December 31, 2012 and for the three and nine months ended September 30, 2013 respectively. At December 31, 2012 and September 30, 2013 the total unamortized stock-based compensation expense of approximately $11.7 million and $26.4 million, respectively, is to be recognized over the stock options’ remaining vesting term of approximately 3.22 years and 2.96 years.

Net_Loss_Per_Share

Net Loss Per Share	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Net Loss Per Share	'
	Net Loss Per Share
	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013				2012			2013			2012
	Net loss	$	(8,611	)		$	(3,208	)	$	(27,049	)	$	(8,585	)
	Weighted-average shares used to compute basic and diluted net loss per share	46,262				2,545			25,587			2,499
	Basic and diluted net loss per share	$	(0.19	)		$	(1.26	)	$	(1.06	)	$	(3.44	)
	The following securities were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Redeemable convertible preferred stock	—			33,897			—		33,897
	Employee stock options	12,833			9,834			12,833		9,834
	Convertible preferred stock warrants	—			1,010			—		1,010
	Common stock warrants	115			—			115		—
		12,948			44,741			12,948		44,741

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The Company’s provision for income taxes is based on the estimated annual effective tax rate, adjusted for discrete tax items recorded in the period. The effective tax rate for the three and nine months ended September 30, 2013, and three and nine months ended September 30, 2012, was less than one percent primarily as a result of the estimated tax losses for those fiscal periods for which no benefit is recorded due to the full valuation allowance recorded against the Company’s net deferred tax assets. The Company’s tax expense relates to state minimum taxes and foreign income taxes associated with the Company’s non-US operations.
	As of September 30, 2013, based on the available objective evidence, management believes it is not more likely than not that the tax benefits of the US losses incurred during the nine months ended September 30, 2013 will be realized. Accordingly, the Company did not record a tax benefit from the US losses incurred during the nine months ended September 30, 2013.
	The primary difference between the effective tax rate and the federal statutory tax rate relates to the valuation allowances on the Company’s net operating losses, foreign tax rate differences and permanent differences for stock based compensation.

Employee_Benefit_Plan

Employee Benefit Plan	9 Months Ended
	Sep. 30, 2013
Compensation and Retirement Disclosure [Abstract]	'
Employee Benefit Plan	'
	Employee Benefit Plan
	The Company provides a defined contribution savings plan under Section 401(k) of the Internal Revenue Code. This plan covers substantially all employees who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis. Company contributions to the plan may be made at the discretion of the board of directors. There were no employer contributions under this plan for the year ended December 31, 2012 or the nine months ended September 30, 2013.

Concentration

Concentration	9 Months Ended
	Sep. 30, 2013
Risks and Uncertainties [Abstract]	'
Concentration	'
	Concentration
	Customers with a receivables balance of 10% or greater of the total receivables, which includes accounts receivable and lease receivables, and customers with revenue of 10% or greater of the total revenue are as follows:
		December 31,		September 30,		Three Months Ended September 30,				Nine Months Ended September 30,
		2012		2013		2013		2012		2013		2012
		Percentage of		Percentage of		Percentage		Percentage		Percentage		Percentage
		Receivables		Receivables		of Revenue		of Revenue		of Revenue		of Revenue
	Customer A	22	%	38	%	50	%	43	%	45	%	47	%

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2013
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	The Company considers operating segments to be components of the Company in which separate financial information is available and is evaluated regularly by the Company’s chief operating decision maker in deciding how to allocate resources and in assessing performance. The chief operating decision maker for the Company is the Chief Executive Officer. The Chief Executive Officer reviews financial information presented on a consolidated basis, accompanied by information about revenue by product line 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 or plans for levels or components below the consolidated unit level. Accordingly, the Company has determined that it has a single operating and reporting segment.
	Substantially all of the revenue and assets were attributable to U.S. operations as of December 31, 2012 and September 30, 2013.

Subsequent_Events

Subsequent Events	9 Months Ended
	Sep. 30, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	Subsequent events
	In October 2013, the Company sold $7.3 million of its lease receivables to a third party financing organization at par value for total cash proceeds of $7.3 million.

Organization_and_Significant_A1

Organization and Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2013
Accounting Policies [Abstract]	'
Description of the Business	'
	Description of the Business — Cyan, Inc. (Cyan or the Company) was incorporated on October 25, 2006, in the state of Delaware and its principal executive offices are located in Petaluma, California. The Company has pioneered innovative, carrier-grade networking solutions that transform disparate and inefficient legacy networks into open, high-performance networks. The Company’s solutions include high-capacity, multi-layer switching and transport platforms as well as a carrier-grade software-defined networking platform and applications. The Company’s solutions enable its customers to virtualize their networks, accelerate service delivery and increase scalability and performance while reducing costs. The Company designed its solutions to provide a variety of existing and emerging premium applications including business Ethernet, wireless backhaul, broadband backhaul and cloud connectivity. The Company’s customers range from service providers to high-performance data center and large, private network operators.
Initial Public Offering	'
	Initial Public Offering — In May 2013, the Company closed its initial public offering (IPO) whereby 8,899,022 shares of common stock were sold to the public, including 899,022 shares of common stock pursuant to the partial exercise of an overallotment option granted to the underwriters. The aggregate net proceeds received by the Company from the offering were $87.4 million, net of underwriting discounts and commissions and issuance expenses. Upon the closing of the IPO, all shares of the Company’s outstanding convertible preferred stock automatically converted into 33,897,005 shares of common stock. In addition, certain warrants to purchase shares of convertible preferred stock were exercised resulting in the issuance of 792,361 shares of common stock and the remaining outstanding warrants to purchase convertible preferred stock were converted into warrants to purchase 115,001 shares of common stock.
Basis of Preparation	'
	Basis of Preparation — The Company's condensed consolidated financial statements include its accounts and the accounts of its wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated. The accompanying condensed consolidated balance sheet as of September 30, 2013, the condensed consolidated statements of operations for the three and nine months ended September 30, 2013 and 2012, the condensed consolidated statements of comprehensive loss for the three and nine months ended September 30, 2013 and 2012, and the condensed consolidated statements of cash flows for the nine months ended September 30, 2013 and 2012 are unaudited. The accompanying condensed consolidated balance sheet as of December 31, 2012 was derived from the audited consolidated balance sheet as of December 31, 2012. The accompanying statements should be read in conjunction with the audited consolidated financial statements and related notes for the year ended December 31, 2012 contained in the Company's registration statement on Form S-1.
	The accompanying condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (GAAP) for interim financial information, and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC) for interim financial statements. They do not include all of the financial information and footnotes required by GAAP for complete financial statements. Management believes that the unaudited condensed consolidated financial statements have been prepared on the same basis as the audited financial statements and include all adjustments necessary for the fair presentation of the Company's balance sheet as of September 30, 2013, the results of operations and comprehensive income (loss) for the three and nine months ended September 30, 2013 and 2012 and the cash flows for the nine months ended September 30, 2013 and 2012. All adjustments are of a normal recurring nature. The results for the three and nine months ended September 30, 2013 are not necessarily indicative of the results to be expected for any subsequent interim period or for the year ending December 31, 2013.
Use of Estimates	'
	Use of Estimates — The preparation of financial statements in accordance with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses for the reporting period. For the Company, these estimates include, but are not limited to, allowances for doubtful accounts, excess and obsolete inventory, allowances for obligations to its contract manufacturer, useful lives assigned to long-lived assets, the valuation of options, common and redeemable convertible preferred stock and related warrants, warranty costs and contingencies. Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.
Credit Risk and Concentrations	'
	Credit Risk and Concentrations — Financial instruments that potentially subject the Company to significant concentrations of credit risk consist primarily of cash and cash equivalents, marketable securities, trade receivables and lease receivables.
	Cash and Cash equivalents consist of cash and money market funds that are invested through financial institutions in the United States. Such deposits may, at times, exceed federally insured limits. The Company has not experienced any losses in such accounts. Management believes that the financial institutions that hold the Company’s cash and cash equivalents are financially sound and, accordingly, minimal credit risk exists with respect to these cash and cash equivalents.
	Marketable securities, which are classified as available for sale at September 30, 2013 include U.S. treasury securities, U.S. government-sponsored agency securities, commercial paper, corporate bonds and municipal bonds. Investment policies have been implemented that limit marketable securities to investment grade securities. Generally, the Company's marketable securities have maturity dates up to two years from the date of purchase and active markets for these securities exist.
	Concentrations of credit risk with respect to trade receivables exist to the full extent of amounts presented in the financial statements. The Company performs ongoing credit evaluations of its customers and generally does not require collateral from its customers to secure trade receivables. Trade receivables are derived from sales to customers located primarily in the United States. The Company maintains an allowance for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The Company records a specific allowance based on an analysis of individual past-due balances, including evaluations of its customers’ financial condition. Additionally, based on its historical write-offs and collections experience, the Company records an additional allowance based on a percentage of outstanding receivables. These valuations require significant judgment and are based on a variety of factors, including, but not limited to, current economic trends, payment history and financial review of the customer. Actual collection losses may differ from management’s estimates, and such differences could be material to the Company’s consolidated financial position and results of operations. The Company had no allowance for doubtful accounts recorded as of December 31, 2012 and $0.3 million allowance for doubtful accounts recorded as of September 30, 2013.
	The Company provides leasing arrangements for certain qualified end-user customers. The Company classifies these arrangements as lease receivables, which represent sales-type leases resulting from the sale of the Company’s products. Lease receivables consist of arrangements with the Company's customers, which generally have three year terms. The Company retains title to the underlying assets for the term of the lease. The Company assesses the allowance for credit loss related to lease receivables on an individual basis. If applicable, the Company maintains an allowance for credit losses resulting from the inability or unwillingness of its customers to make required payments. The Company records a specific allowance based on an analysis of individual past-due balances, including evaluations of the customers’ financial condition. These valuations require significant judgment and are based on a variety of factors, including but not limited to, current economic trends, payment history, and financial review of the customer.
	Outstanding leasing receivables that are aged 30 days or more from the contractual payment date are considered past due. Leasing receivables may be placed on nonaccrual status earlier if, in management’s opinion, a timely collection of the full principal and interest becomes uncertain. After a lease receivable has been categorized as nonaccrual, interest will be recognized when cash is received. A lease receivable may be returned to accrual status after all of the customer’s delinquent balances of principal and interest have been settled and the customer remains current for an appropriate period.
	In addition, when the evaluation indicates that it is probable that all amounts due pursuant to the contractual terms of the lease agreement, including scheduled interest payments, are unable to be collected, the leasing receivable is considered impaired. All such outstanding amounts, including any accrued interest, will be assessed and fully reserved at the individual customer level. Lease receivables are written off at the point when they are considered uncollectible and all outstanding balances, including any previously earned but uncollected interest income, will be reversed and charged against the allowance for credit losses.
	Actual collection losses may differ from management’s estimates, and such differences could be material to Company’s consolidated financial position and results of operations. The Company had no lease receivables as of December 31, 2012. As of September 30, 2013 the Company had $9.8 million of lease receivables and no allowance for credit losses as of that date.
	The Company depends on its contract manufacturer for its finished goods inventory. The Company operates under a manufacturing services agreement with its contract manufacturer pursuant to which the Company is to provide a rolling quarterly forecast indicating the Company’s monthly production requirements. While the Company seeks to maintain sufficient inventory on hand, the Company’s business and results of operations could be adversely affected by a stoppage or delay in receiving such products, the receipt of defective parts, an increase in the price of such products, or the Company’s inability to obtain lower prices from its contract manufacturer and suppliers in response to competitive pressures.
Inventories	'
	Inventories — Inventories consisting of finished goods purchased from the contract manufacturer are stated at the lower of cost or market value, with cost being determined using standard cost, which approximates actual cost, on a first-in, first-out basis. The Company regularly monitors inventory quantities on hand and on order and records write-downs as a component of cost of revenue for excess and obsolete inventories based on the Company’s estimate of the demand for its products, potential obsolescence of technology, product life cycles, and whether pricing trends or forecasts indicate that the carrying value of inventory exceeds its estimated selling price. These factors are affected by market and economic conditions, technology changes, and new product introductions and require estimates that may include elements that are uncertain. Actual demand may differ from forecasted demand and may have a material effect on gross margins. If inventory is written down, a new cost basis will be established that cannot be increased in future periods.
Revenue Recognition	'
	Revenue Recognition — Revenue is recognized when all of the following criteria are met:
	•	Persuasive evidence of an arrangement exists. Customer purchase orders, along with master purchase contracts, where applicable, are generally used to determine the existence of an arrangement.
	•	Delivery has occurred. Shipping documents and customer acceptance, when applicable, are used to verify delivery.
	•	The price is fixed or determinable. The Company assesses whether the price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment.
	•	Collectability is reasonably assured. The Company assesses collectability based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history.
	The Company derives revenue primarily from the sales of its hardware and software products as well as professional services. Shipping charges billed to customers are included in revenue.
	From time to time, the Company offers customers sales incentives, including discounts. Revenue is recorded net of these amounts.
	Customer payment terms are generally net 30 days. The Company generally does not offer extended payment terms.
	A portion of the Company’s sales are made through multi-year lease agreements.  These lease agreements include a bargain purchase option and meet the criteria for treatment as sales-type leases. Under sales-type leases, the Company recognizes revenue for its hardware products, net of post-installation product maintenance and technical support, at the net present value of the lease payment stream at the point in time the lessee has the right to use the underlying asset (either once the Company’s installation obligations have been met, or upon shipment if no such installation obligation exists).  The Company seeks to optimize its cash flows by selling a majority of its lease receivables to third party financing organizations on a non-recourse basis.  Aside from its standard product warranty, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Some of the Company’s sales-type leases may remain unsold at any particular period end.
	In general, the Company’s products and services qualify as separate units of accounting. Products are typically considered delivered upon shipment. In certain cases, the Company’s products are sold along with services, which include installation, training, remote network monitoring services, post-sales software support, software-as-a-service (SaaS) based subscriptions, and/or extended warranty services. Post-sales software support includes rights, on a when-and-if-available basis, to receive unspecified software product upgrades to embedded software or the Company’s management software; maintenance releases; and patches released during the term of the support contract. This type of transaction is considered a multiple-element arrangement. When accounting for multiple-element arrangements, GAAP requires the Company to allocate revenue to individual elements using vendor-specific objective evidence (VSOE), third-party evidence (TPE), or its best estimated selling price (BESP) of deliverables if VSOE or TPE cannot be determined.
	Multiple-element arrangements can include any combination of products and services. When allocating consideration, the Company will first do so on the basis of the deliverables’ relative selling prices, without regard to any contingent consideration, and then subsequently determine whether the revenue that may be recognized is limited based on the amount of non-contingent revenue. To the extent that the stated contractual prices agree to the Company’s estimated selling price on a standalone basis, the allocation of the consideration is based on stated contractual prices. However, if the stated contractual price for any deliverable is outside a narrow range of the estimated selling price on a standalone basis, the allocation is adjusted using the “relative-selling-price method.” Because the individual products and services meet the criteria for separate units of accounting, the Company will recognize revenue for each element upon delivery of the element.
	The Company has not yet established VSOE for all deliverables in its arrangements with multiple elements. When VSOE cannot be established, the Company attempts to establish the selling price of each element based upon TPE by evaluating the pricing of similar and interchangeable competitor products or services in standalone arrangements. However, as the Company’s products contain a significant element of proprietary technology and offer substantially different features and functionality from competitors, the Company has not been able to obtain comparable pricing information with respect to competitors’ products. Therefore, the Company has not been able to obtain reliable evidence of TPE.
	When the Company is unable to establish a selling price using VSOE or TPE, the Company uses BESP. The objective of BESP is to determine the price at which the Company would transact a sale if the element were sold on a standalone basis. BESP is primarily used for all elements for which the Company has historically not been able to establish VSOE or TPE.
	The Company determines BESP for an element by considering multiple factors, including, but not limited to, geographies, market conditions, competitive landscape, internal costs, gross margin objectives, characteristics of targeted customers, and pricing practices. The determination of BESP is made through consultation with and formal approval by the Company’s management, taking into consideration the go-to-market strategy. The Company regularly reviews VSOE, TPE, and BESP and has a process for the establishment and updating of these estimates.
	Post-sales software support revenue and extended warranty services revenue are deferred and recognized ratably over the period during which the services are to be performed. Installation and training service revenues are recognized upon delivery or completion of performance. These service arrangements are typically short-term in nature and are largely completed shortly after delivery of the product.
	The Company also delivers software-defined networking solutions to customers most frequently on a term license basis, with terms typically ranging from 12 to 36 months. While term-based licenses make up the majority of related revenues, the Company occasionally licenses software to customers on a perpetual basis with on-going support and maintenance services. Revenue from software that functions together with the tangible hardware elements to deliver the tangible products’ essential functionality is generally recognized upon shipment assuming all other revenue recognition criteria are met.  Revenue from application software and related software elements which are not considered essential to the functionality of hardware is accounted for in accordance with software industry guidance, and therefore is recognized ratably over the longest service period for post-contract customer support, or PCS, and professional services as the Company has not established VSOE for software or the related software elements.
	In instances where substantive acceptance provisions are specified in the customer agreement, revenue is deferred until all acceptance criteria have been met. The Company’s arrangements generally do not include any provisions for cancellation, termination or refunds that would materially impact revenue recognition.
	The Company enters into arrangements with certain of its customers who receive government supported loans and grants from the U.S. Department of Agriculture’s Rural Utility Service (RUS) to finance capital spending. Under the terms of an RUS equipment contract that includes installation services, the customer does not take possession and control and the title does not pass until formal acceptance is obtained from the customer. Under this type of arrangement, the Company does not recognize revenue until it has received formal acceptance from the customer and all other revenue recognition criteria have been met.
	When the Company’s products have been delivered but the product revenue associated with the arrangement has been deferred as a result of not meeting the revenue recognition criteria, the related product costs are also deferred and included in deferred costs in the accompanying consolidated balance sheets.
Warranties	'
	Warranties — The Company offers limited warranties for its hardware products for periods of one to eight years. The Company recognizes estimated costs related to warranty activities as a component of cost of revenue upon product shipment. The estimates are based upon historical product failure rates and historical costs incurred in correcting product failures. The recorded amount is adjusted from time to time for specifically identified warranty exposures. Actual warranty expenses are charged against the Company’s estimated warranty liability when incurred. Factors that affect the Company’s liability include the number of installed units, historical and anticipated rates of warranty claims and the cost per claim.
	Additionally, the Company offers separately priced extended warranty contracts for coverage beyond the standard warranty period. The Company expenses all warranty costs as incurred related to such extended warranty contracts.
Income Taxes	'
	Income Taxes — The Company uses the asset and liability method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the temporary differences between the financial reporting and tax basis of assets and liabilities using enacted tax rates in effect for the years in which the differences are expected to reverse. The effect on deferred tax assets and liabilities of a change in tax laws is recognized in the consolidated statement of operations in the period that includes the enactment date. Valuation allowances are established when necessary to reduce deferred income tax assets to the amounts more-likely-than-not expected to be realized.
	As part of the process of preparing the consolidated financial statements, the Company is required to estimate income tax expense and uncertain tax positions in each of the tax jurisdictions in which the Company operates. This process involves estimating current income tax expense together with assessing temporary differences in the treatment of items for tax purposes versus financial accounting purposes that may create net deferred tax assets and liabilities. The Company relies on estimates and assumptions in preparing its income tax provision.
	The Company is subject to periodic audits by the Internal Revenue Service and other taxing authorities. The Company recognizes the tax benefit of an uncertain tax position only if it is more-likely-than-not that the position is sustainable upon examination by the taxing authority based on the technical merits. The tax benefit recognized is measured as the largest amount of benefit which is greater than 50 percent likely to be realized upon settlement with the taxing authority. The Company recognizes interest accrued and penalties related to unrecognized tax benefits in the income tax provision.
Stock - Based Compensation	'
	Stock – Based Compensation —The Company measures and recognizes stock-based compensation expense in the financial statements for all share-based payment awards made to employees and directors based on the estimated fair values on the date of grant using the Black- Scholes option-pricing model.
	The Company’s determination of the fair value of a share based payment award on the date of grant using the Black-Scholes option pricing model is affected by assumptions regarding a number of highly complex and subjective variables. These variables include the Company’s expected stock price volatility over the expected term of the awards, stock option exercise and cancellation behaviors, risk-free interest rates and expected dividends.

Fair_Value_Disclosure_Tables

Fair Value Disclosure (Tables)	9 Months Ended
	Sep. 30, 2013
Fair Value Disclosures [Abstract]	'
Fair Value Measurement on Company's Assets and Liabilities	'
	The following tables set forth by level, within the fair value hierarchy, the Company’s assets and liabilities at fair value as of September 30, 2013 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	47,906		$	—		$	—		$	47,906
	Marketable Securities:
	Commercial paper		$	—		$	13,179		$	—		$	13,179
	Corporate bonds		$	—		$	3,387		$	—		$	3,387
	Municipal bonds		$	—		$	1,025		$	—		$	1,025
	U.S. government-sponsored agency securities		$	—		$	2,027		$	—		$	2,027
	U.S. treasury securities		$	4,035		$	—		$	—		$	4,035
	Total marketable securities		$	4,035		$	19,618		$	—		$	23,653
Fair Value Measurements, Recurring and Nonrecurring	'
	The following tables set forth by level, within the fair value hierarchy, the Company’s assets and liabilities at fair value as of December 31, 2012 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	4,544		$	—		$	—		$	4,544
	Liabilities:
	Preferred stock warrants		$	—		$	—		$	6,254		$	6,254
Fair Value, Assets Measured on Recurring Basis [Table Text Block]	'
	The following table shows the Company’s available-for-sale securities amortized cost, gross unrealized gains, gross unrealized losses and fair value as of September 30, 2013 (in thousands):
		Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
	Marketable securities:
	Commercial paper	$	13,180		$	—		$	(1	)	$	13,179
	Corporate bonds	3,387			—			—			3,387
	Municipal bonds	1,026			—			(1		)	1,025
	U.S. government-sponsored agency securities	2,027			—			—			2,027
	U.S. treasury securities	$	4,033		$	2		$	—		$	4,035
	Total marketable securities	$	23,653		$	2		$	(2	)	$	23,653

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Cash and Cash Equivalents	'
	Cash and cash equivalents consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Cash	$	5,462		$	15,677
	Money market funds	47,906			4,544
	Total cash and cash equivalents	$	53,368		$	20,221
Schedule of Future Minimum Lease Payments for Capital Leases	'
	A summary of the Company’s lease receivables is presented as follows (in thousands):
		30-Sep-13			December 31, 2012
	Net minimum lease payments to be received	$	10,612		$	—
	Less unearned interest income portion	832			—
	Total lease receivable	9,780			—
	Less short-term lease receivable	3,260			—
	Long-term lease receivable	$	6,520		$	—
Schedule Of Future Minimum Lease Payments, Receivable, For Capital Leases	'
	Contractual maturities of the gross lease receivables as at September 30, 2013 are summarized as follows (in thousands):
	Year ending December 31:
	2013	$	1,107
	2014	3,456
	2015	3,456
	2016	2,593
		$	10,612
Schedule of Inventories	'
	Inventories consisted of finished goods purchased from the contract manufacturer and are stated at the lower of cost (on a first-in, first-out basis) or market value. Inventory consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Raw materials	$	699		$	557
	Finished goods	15,034			13,492
	Total Inventory	$	15,733		$	14,049
Schedule of Property and Equipment, Net	'
	Property and equipment, net consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Lab equipment and tooling	$	13,019		$	8,991
	Software	617			567
	Leasehold improvements	1,189			876
	Furniture and fixtures	825			413
	Computer equipment	848			719
		16,498			11,566
	Less accumulated depreciation and amortization	$	(7,039	)	(5,081		)
	Property and equipment, net	$	9,459		$	6,485
Schedule of Accrued Liabilities	'
	Accrued liabilities consisted of the following (in thousands):
		30-Sep-13			December 31, 2012
	Inventory-in-transit	$	625		$	323
	Warranty reserve (1)	1,715			1,266
	Professional fees	1,817			921
	Sales and use taxes	732			627
	Other	301			499
	Total accrued liabilities	$	5,190		$	3,636
	-1	Activity related to warranties is as follows (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013			2012
	Beginning balance	$	1,784		$	979		$	1,266		$	783
	Charge to cost of sales	400			324			1,526			813
	Costs incurred	(469		)	(176		)	(1,077		)	(469		)
	Closing balance	$	1,715		$	1,127		$	1,715		$	1,127

Debt_Tables

Debt (Tables)	9 Months Ended
	Sep. 30, 2013
Debt Disclosure [Abstract]	'
Estimated Principal Payments of Term Loan	'
	The estimated principal payments of the term loan are as follows (in thousands):
	Year ending December 31:
	2013	$	—
	2014	1,604
	2015	1,666
	2016	1,730
		$	5,000

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Future Minimum Annual Obligations under Non-Cancellable Lease Agreements	'
	Future minimum annual obligations under non-cancellable lease agreements as of September 30, 2013 are approximately as follows (in thousands):
	Year ending December 31:
	2013	$	257
	2014	1,238
	2015	1,294
	2016	1,200
	2017	1,331
	Thereafter	8,522
	Total	$	13,842

Redeemable_Convertible_Preferr1

Redeemable Convertible Preferred Stock and Warrants (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Assumptions Used to Estimate Fair Value of Preferred Stock Warrant	'
	The fair value of the outstanding preferred stock warrants was determined using the Black-Scholes-Merton option-pricing model. The fair value of the preferred stock warrant was estimated using the following assumptions for the periods presented below:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
	Expected term (years)	—		1.14 - 3.74			0.48 - 3.24			1.14 - 4.24
	Volatility	—		55	%		55	%		55	%
	Risk-free interest rate	—		0.23 - 0.62%			0.22 - 0.68%			0.23 - 1.04%
	Dividend yield	—		—			—			—
Change in the Fair Value of the Convertible Preferred Stock Warrant Liability	'
	The change in the fair value of the convertible preferred stock warrant liability during the periods presented was summarized below (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013			2012				2013			2012
	Opening balance	$	—		$	1,642			$	6,254		$	900
	Increase in Fair Value	—			1,048				2,602			1,790
	Reclassification of warrant to additional paid-in capital	—			—				(8,856		)	—
	Closing balance	$	—		$	2,690			$	—		$	2,690

Common_Stock_Tables

Common Stock (Tables)	9 Months Ended
	Sep. 30, 2013
Equity [Abstract]	'
Allocation of Stock-Based Compensation Expense to Statements of Operations	'
	A summary of the activity and changes during the reporting periods and a summary of information related to options exercisable, vested, and expected to vest are presented below:
		Shares		Number of			Weighted				Weighted	Aggregate
		Available		Shares			Average				Average	Intrinsic
		for Grant		Outstanding			Exercise				Remaining	Value (in
							Price				Contractual	thousands)
											Life (Years)
	Balance at December 31, 2012	1,242,353		10,212,760			$	2.49			8.4	59,456
	Options reserved	4,600,000		—			—
	Options granted	(3,309,273	)	3,309,273			$	9.59
	Options exercised	—		(123,852	)		$	1.75
	Options forfeited	565,218		(565,218	)		$	4.16
	Balance at September 30, 2013	3,098,298		12,832,963			$	4.25			8.14	75,425
	Options vested and expected to vest - September 30, 2013			12,475,894			$	4.11			8.1	$	75,057
	Options exercisable - September 30, 2013			4,943,254			$	1.94			6.83	$	40,107
Black-Scholes-Merton Option-Pricing Model	'
	The Company determined the fair value of each option grant on the date of grant using the Black-Scholes option-pricing model using the following factors:
		Three Months Ended					Nine Months Ended
		September 30,					September 30,
		2013		2012			2013			2012
	Expected term (years)	6.08		6.08			6.08			6.08
	Volatility	48	%	55	%		48 - 55%			55	%
	Risk-free interest rate	1.4 - 1.65%		0.62 - 0.71%			0.7 - 1.65%			0.62 - 1.02%
	Dividend yield	—		—			—			—
Summary of Stock Options Activity	'
	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of operations (in thousands):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013			2012				2013			2012
	Cost of revenue	$	61		$	9			$	121		$	25
	Research and development	773			163				1,684			384
	Sales and marketing	571			169				1,444			372
	General and administrative	793			225				1,851			382
	Total employee stock-based compensation	$	2,198		$	566			$	5,100		$	1,163

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2013
Earnings Per Share [Abstract]	'
Calculation of Basic and Diluted Net Loss Per Share	'
	The following table presents the calculation of basic and diluted net loss per share (in thousands, except per share data):
		Three Months Ended							Nine Months Ended
		September 30,							September 30,
		2013				2012			2013			2012
	Net loss	$	(8,611	)		$	(3,208	)	$	(27,049	)	$	(8,585	)
	Weighted-average shares used to compute basic and diluted net loss per share	46,262				2,545			25,587			2,499
	Basic and diluted net loss per share	$	(0.19	)		$	(1.26	)	$	(1.06	)	$	(3.44	)
Securities Excluded from Calculation of Diluted Net Loss Per Share	'
	The following securities were excluded from the calculation of diluted net loss per share attributable to common stockholders because their effect would have been anti-dilutive for the periods presented (in thousands):
		Three Months Ended						Nine Months Ended
		September 30,						September 30,
		2013			2012			2013		2012
	Redeemable convertible preferred stock	—			33,897			—		33,897
	Employee stock options	12,833			9,834			12,833		9,834
	Convertible preferred stock warrants	—			1,010			—		1,010
	Common stock warrants	115			—			115		—
		12,948			44,741			12,948		44,741

Concentration_Tables

Concentration (Tables)	9 Months Ended
	Sep. 30, 2013
Risks and Uncertainties [Abstract]	'
Customers With 10% or Greater of Total Accounts Receivable and Net Revenue	'
	Customers with a receivables balance of 10% or greater of the total receivables, which includes accounts receivable and lease receivables, and customers with revenue of 10% or greater of the total revenue are as follows:
		December 31,		September 30,		Three Months Ended September 30,				Nine Months Ended September 30,
		2012		2013		2013		2012		2013		2012
		Percentage of		Percentage of		Percentage		Percentage		Percentage		Percentage
		Receivables		Receivables		of Revenue		of Revenue		of Revenue		of Revenue
	Customer A	22	%	38	%	50	%	43	%	45	%	47	%

Organization_and_Significant_A2

Organization and Significant Accounting Policies - Additional Information (Detail) (USD $)	1 Months Ended	9 Months Ended			1 Months Ended					9 Months Ended
	31-May-13	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	31-May-13	31-May-13	31-May-13	31-May-13	31-May-13	Sep. 30, 2013
					IPO [Member]	IPO [Member]	IPO [Member]	IPO [Member]	IPO [Member]	IPO [Member]
							Preferred Stock [Member]	Common Stock [Member]	Warrant [Member]	Warrant [Member]
									Warrants To Purchase Convertible Preferred Stock Converted To Warrants To Purchase Common Stock [Member]	Warrants To Purchase Convertible Preferred Stock Converted To Warrants To Purchase Common Stock [Member]
Conversion of Stock [Line Items]	'	'	'	'	'	'	'	'	'	'
Initial public offering common stock sold to public, shares	'	'	'	'	8,899,022	8,899,022	'	'	'	'
Overallotment option granted to the underwriters, shares	'	'	'	'	'	899,022	'	'	'	'
Conversion of stock, shares converted	'	'	'	'	'	'	33,897,005	'	115,001	115,001
Aggregate net proceeds from offering, net of underwriting discounts and commissions	$87,400,000	$87,348,000	$0	'	'	$87,400,000	'	'	'	'
Outstanding warrants to purchase convertible preferred stock converted into shares of common stock, shares	'	'	'	'	'	'	'	792,361	'	'
Allowance for doubtful accounts	'	300,000	'	0	'	'	'	'	'	'
Threshold recognizes tax benefit	'	50.00%	'	'	'	'	'	'	'	'
Lease term	'	'3 years	'	'	'	'	'	'	'	'
Total lease receivable	'	$9,780,000	'	$0	'	'	'	'	'	'
Payment terms to customers	'	'30 days	'	'	'	'	'	'	'	'
Warranty period description	'	'The Company offers limited warranties for its hardware products for periods of one to eight years.	'	'	'	'	'	'	'	'
Minimum warranty term	'	'1 year	'	'	'	'	'	'	'	'
Maximum warranty term	'	'8 years	'	'	'	'	'	'	'	'

Fair_Value_Disclosure_Addition

Fair Value Disclosure - Additional Information (Details) (USD $)	Sep. 30, 2013
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'
Marketable securities maturing within one year	$15
Marketable securities maturing within two years	$8.70

Fair_Value_Disclosure_Fair_Val

Fair Value Disclosure - Fair Value Measurement on Company's Assets and Liabilities (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	$23,653	'
Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	13,179	'
Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	3,387	'
Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,025	'
U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	2,027	'
U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,035	'
Recurring [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,035	'
Recurring [Member] | Level 1 [Member] | Preferred Stock Warrants [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Liabilities	'	0
Recurring [Member] | Level 1 [Member] | Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 1 [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 1 [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 1 [Member] | U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 1 [Member] | U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,035	'
Recurring [Member] | Level 1 [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	47,906	4,544
Recurring [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	19,618	'
Recurring [Member] | Level 2 [Member] | Preferred Stock Warrants [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Liabilities	'	0
Recurring [Member] | Level 2 [Member] | Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	13,179	'
Recurring [Member] | Level 2 [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	3,387	'
Recurring [Member] | Level 2 [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,025	'
Recurring [Member] | Level 2 [Member] | U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	2,027	'
Recurring [Member] | Level 2 [Member] | U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 2 [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	0	0
Recurring [Member] | Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | Preferred Stock Warrants [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Liabilities	'	6,254
Recurring [Member] | Level 3 [Member] | Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	0	'
Recurring [Member] | Level 3 [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	0	0
Recurring [Member] | Total [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	23,653	'
Recurring [Member] | Total [Member] | Preferred Stock Warrants [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Liabilities	'	6,254
Recurring [Member] | Total [Member] | Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	13,179	'
Recurring [Member] | Total [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	3,387	'
Recurring [Member] | Total [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,025	'
Recurring [Member] | Total [Member] | U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	2,027	'
Recurring [Member] | Total [Member] | U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,035	'
Recurring [Member] | Total [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	$47,906	$4,544

Fair_Value_Disclosure_Amortize

Fair Value Disclosure - Amortized Cost Reconciliation (Details) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	$23,653
Gross Unrealized Gains	2
Gross Unrealized Losses	-2
Fair Value	23,653
Commercial paper	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	13,180
Gross Unrealized Gains	0
Gross Unrealized Losses	-1
Fair Value	13,179
Corporate bonds	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	3,387
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	3,387
Municipal bonds	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	1,026
Gross Unrealized Gains	0
Gross Unrealized Losses	-1
Fair Value	1,025
U.S. government-sponsored agency securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	2,027
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	2,027
U.S. treasury securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	4,033
Gross Unrealized Gains	2
Gross Unrealized Losses	0
Fair Value	$4,035

Balance_Sheet_Components_Addit

Balance Sheet Components - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Depreciation and amortization expense	$700	$500	$1,956	$1,287

Balance_Sheet_Components_Sched

Balance Sheet Components - Schedule of Cash and Cash Equivalents (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Cash	$5,462	$15,677	'	'
Money market funds	47,906	4,544	'	'
Total cash and cash equivalents	$53,368	$20,221	$16,094	$25,740

Balance_Sheet_Components_Capit

Balance Sheet Components - Capital lease receivables (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Net minimum lease payments to be received	$10,612	$0
Less unearned interest income portion	832	0
Total lease receivable	9,780	0
Less short-term lease receivable	3,260	0
Long-term lease receivable	$6,520	$0

Balance_Sheet_Components_Fisca

Balance Sheet Components - Fiscal Year Maturity Schedule (Details) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
2013	$1,107	'
2014	3,456	'
2015	3,456	'
2016	2,593	'
Total	$10,612	$0

Balance_Sheet_Components_Sched1

Balance Sheet Components - Schedule of Inventories (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Raw materials	$699	$557
Finished goods	15,034	13,492
Total Inventory	$15,733	$14,049

Balance_Sheet_Components_Sched2

Balance Sheet Components - Schedule of Property and Equipment, Net (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$16,498	$11,566
Less accumulated depreciation and amortization	-7,039	-5,081
Property and equipment, net	9,459	6,485
Lab equipment and tooling	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	13,019	8,991
Software	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	617	567
Leasehold improvements	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	1,189	876
Furniture and fixtures	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	825	413
Computer equipment	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$848	$719

Balance_Sheet_Components_Sched3

Balance Sheet Components - Schedule of Accrued Liabilities (Detail) (USD $)	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'	'	'
Inventory-in-transit	$625	'	$323	'	'	'
Warranty reserve (1)	1,715	1,784	1,266	1,127	979	783
Professional fees	1,817	'	921	'	'	'
Sales and use taxes	732	'	627	'	'	'
Other	301	'	499	'	'	'
Total accrued liabilities	$5,190	'	$3,636	'	'	'

Balance_Sheet_Components_Sched4

Balance Sheet Components - Schedule of Activity Related to Warranties (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Beginning balance	$1,784	$979	$1,266	$783
Charge to cost of sales	400	324	1,526	813
Costs incurred	-469	-176	-1,077	-469
Closing balance	$1,715	$1,127	$1,715	$1,127

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Dec. 21, 2012
Debt Instrument [Line Items]	'	'	'
Amount drawn as term loans	$3,803,000	$5,000,000	'
Loan and Security Agreement [Member] | Silicon Valley Bank [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Loan facility, maximum borrowing capacity	'	'	15,000,000
Loan facility description	'For the first 12 months following each term loan advance, each term loan advance bears interest at a floating rate equal to the prime rate, plus 0.50%. Thereafter, each term loan advance bears interest at a fixed rate equal to the prime rate on the date following such 12 month period, plus 0.50%.	'	'
Termination date of Loan facility	21-Dec-14	'	'
Loan payable in number of installments	36	'	'
Expected interest rate increase	5.00%	'	'
Loan and Security Agreement [Member] | Silicon Valley Bank [Member] | Revolving loans [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Loan facility, maximum borrowing capacity	'	'	10,000,000
Line of Credit Facility, Amount Outstanding	0	7,563,000	'
Numeric percent in valuation of floating rate	3.25%	'	'
Prime rate in valuation of floating rate	3.25%	3.25%	'
Loan and Security Agreement [Member] | Silicon Valley Bank [Member] | Term loan [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Loan facility, maximum borrowing capacity	'	'	5,000,000
Line of Credit Facility, Amount Outstanding	$5,000,000	$5,000,000	'
Additional percent with prime rate in valuation of floating rate	0.50%	'	'
Bears interest at fixed rate	0.50%	'	'
Loan facility description	'interest at a floating rate equal to the greater of (i) 3.25% or (ii) the prime rate (3.25% as of both December 31, 2012 and September 30, 2013)	'	'

Debt_Estimated_Principal_Payme

Debt - Estimated Principal Payments of Term Loan (Detail) (USD $)	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Debt Disclosure [Abstract]	'	'
2013	'	$0
2014	'	1,604
2015	'	1,666
2016	'	1,730
Total	$3,803	$5,000

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Apr. 30, 2007
							sqft
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'	'	'
Office premises for lease	'	'	'	'	'	'	22,780
Term of lease	'10 years	'	'	'	'	'	'
Total base rent payable	$11,500,000	'	'	'	'	'	'
Renewal term	'5 years	'	'	'	'	'	'
Percentage of interest held in the Company	'	5.00%	'	5.00%	'	'	'
Percentage of interest in limited liability company from which the Company is leasing building	'	'	'	40.00%	'	'	'
Total deferred rent	'	300,000	'	300,000	'	300,000	'
Rent expense	'	300,000	200,000	800,000	500,000	'	'
Commitments to contract manufacturer	'	9,200,000	'	9,200,000	'	6,600,000	'
Term 1 [Member]	'	'	'	'	'	'	'
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'	'	'
Base rent	46,012	'	'	'	'	'	'
Term 1 [Member] | Property Subject to Operating Lease [Member]	'	'	'	'	'	'	'
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'	'	'
Area of commercial building leased	20,005	'	'	'	'	'	'
Term 2 [Member]	'	'	'	'	'	'	'
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'	'	'
Base rent	$91,904	'	'	'	'	'	'
Term 2 [Member] | Property Subject to Operating Lease [Member]	'	'	'	'	'	'	'
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'	'	'
Area of commercial building leased	38,778	'	'	'	'	'	'

Commitments_and_Contingencies_2

Commitments and Contingencies - Future Minimum Annual Obligations under Non-Cancellable Lease Agreements (Detail) (USD $)	Sep. 30, 2013
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2013	$257
2014	1,238
2015	1,294
2016	1,200
2017	1,331
Thereafter	8,522
Total	$13,842

Redeemable_Convertible_Preferr2

Redeemable Convertible Preferred Stock and Warrants - Additional Information (Detail)	1 Months Ended	9 Months Ended
	31-May-13	Sep. 30, 2013
Equity [Abstract]	'	'
Convertible preferred stock, conversion to common stock ratio	'	1
Series A Preferred Stock [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Warrants issued to purchase preferred stock shares	'	12,806
Exercise price of warrants	'	1.29
Series B Preferred Stock [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Warrants issued to purchase preferred stock shares	'	102,195
Exercise price of warrants	'	2.45
Convertible preferred stock warrants [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Class of warrants exercised	'	894,596
IPO [Member] | Common Stock [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Outstanding warrants to purchase convertible preferred stock converted into shares of common stock, shares	792,361	'
Warrants To Purchase Convertible Preferred Stock Converted To Warrants To Purchase Common Stock [Member] | IPO [Member] | Warrant [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Conversion of stock, shares converted	115,001	115,001

Redeemable_Convertible_Preferr3

Redeemable Convertible Preferred Stock and Warrants - Assumptions Used to Estimate Fair Value of Preferred Stock Warrant (Detail) (Common stock warrants [Member])	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'	'
Volatility	0.00%	55.00%	55.00%	55.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum [Member]	'	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'	'
Expected term (years)	'	'1 year 1 month 21 days	'5 months 23 days	'1 year 1 month 21 days
Risk-free interest rate	'	0.23%	0.22%	0.23%
Maximum [Member]	'	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'	'
Expected term (years)	'	'3 years 8 months 27 days	'3 years 2 months 27 days	'4 years 2 months 27 days
Risk-free interest rate	'	0.62%	0.68%	1.04%

Redeemable_Convertible_Preferr4

Redeemable Convertible Preferred Stock and Warrants - Change in the Fair Value of the Convertible Preferred Stock Warrant Liability (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Equity [Abstract]	'	'	'	'
Opening balance	$0	$1,642	$6,254	$900
Increase in Fair Value	0	1,048	2,602	1,790
Reclassification of warrant to additional paid-in capital	0	0	-8,856	0
Closing balance	$0	$2,690	$0	$2,690

Common_Stock_Additional_Inform

Common Stock - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended	9 Months Ended		12 Months Ended			1 Months Ended			1 Months Ended
	31-May-13	Sep. 30, 2013	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Mar. 31, 2013	Mar. 31, 2013	31-May-13	31-May-13	Sep. 30, 2013	31-May-13
						2013 Equity Incentive Plan [Member]	2006 Stock Plan [Member]	IPO [Member]	IPO [Member]	IPO [Member]	Preferred Stock [Member]
											IPO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Common stock shares sold in public offering	'	'	'	'	'	'	'	8,899,022	8,899,022	'	'
Common stock shares sold as result of underwriters exercise of over allotment option, shares	'	'	'	'	'	'	'	'	899,022	'	'
Public offering price per share	'	'	'	'	'	'	'	$11	$11	'	'
Gross proceeds from offering to the Company	'	'	'	'	'	'	'	'	$97,900,000	'	'
Net proceeds after deducting underwriters' discounts and commissions and offering expenses	87,400,000	'	87,348,000	0	'	'	'	'	87,400,000	'	'
Conversion of stock, shares converted	'	'	'	'	'	'	'	'	'	'	33,897,005
Common stock, shares outstanding	'	46,287,460	46,287,460	'	2,575,220	'	'	'	'	46,287,460	'
Common stock, shares issued	'	46,287,460	46,287,460	'	2,575,220	'	'	'	'	'	'
Common stock shares authorized	'	1,000,000,000	1,000,000,000	'	50,000,000	'	'	'	'	'	'
Preferred stock shares authorized	'	20,000,000	20,000,000	'	0	'	'	'	'	'	'
Common stock reserved for future issuance	'	'	'	'	'	3,600,000	11,400,000	'	'	'	'
Fair value of options granted	'	2,500,000	17,300,000	'	13,300,000	'	'	'	'	'	'
Weighted-average fair value of options granted	'	'	$4.76	$5.24	$2.15	'	'	'	'	'	'
Unamortized stock-based compensation expense	'	'	$26,400,000	'	$11,700,000	'	'	'	'	'	'
Stock options remaining vesting term	'	'	'2 years 11 months 16 days	'	'3 years 80 days	'	'	'	'	'	'

Common_Stock_Summary_of_Stock_

Common Stock - Summary of Stock Options Activity (Detail) (USD $)	9 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Equity [Abstract]	'	'
Shares Available for Grant, Beginning of period	1,242,353	'
Shares Available for Grant, Options reserved	4,600,000	'
Shares Available for Grant, Options granted	-3,309,273	'
Shares Available for Grant, Options exercised	0	'
Shares Available for Grant, Options forfeited	565,218	'
Shares Available for Grant, End of period	3,098,298	1,242,353
Number of Shares Outstanding, Beginning of period	10,212,760	'
Number of Shares Outstanding, Options reserved	0	'
Number of Shares Outstanding, Options granted	3,309,273	'
Number of Shares Outstanding, Options exercised	-123,852	'
Number of Shares Outstanding, Options forfeited	-565,218	'
Number of Shares Outstanding, End of period	12,832,963	10,212,760
Number of Shares Outstanding, Options vested and expected to vest, End of period	12,475,894	'
Number of Shares Outstanding, Options exercisable, End of period	4,943,254	'
Weighted Average Exercise Price, Beginning of period	$2.49	'
Weighted Average Exercise Price, Options reserved	$0	'
Weighted Average Exercise Price, Options granted	$9.59	'
Weighted Average Exercise Price, Options exercised	$1.75	'
Weighted Average Exercise Price, Options forfeited	$4.16	'
Weighted Average Exercise Price, End of period	$4.25	$2.49
Weighted Average Exercise Price, Options vested and expected to vest, End of period	$4.11	'
Weighted Average Exercise Price, Options exercisable, End of period	$1.94	'
Weighted Average Remaining Contractual Life (Years)	'8 years 1 month 21 days	'8 years 4 months 24 days
Weighted Average Remaining Contractual Life (Years)	'8 years 1 month 21 days	'8 years 4 months 24 days
Weighted Average Remaining Contractual Life (Years), Options vested and expected to vest	'8 years 1 month 6 days	'
Weighted Average Remaining Contractual Life (Years), Options exercisable	'6 years 9 months 29 days	'
Aggregate Intrinsic Value, beginning of period	$59,456	'
Aggregate Intrinsic Value, end of period	75,425	59,456
Aggregate Intrinsic Value, Options vested and expected to vest, end of period	75,057	'
Aggregate Intrinsic Value, Options exercisable, end of period	$40,107	'

Common_Stock_BlackScholesMerto

Common Stock - Black-Scholes-Merton Option-Pricing Model (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Expected term (years)	'6 years 29 days	'6 years 0 months 29 days	'6 years 0 months 29 days	'6 years 0 months 29 days
Volatility	48.00%	55.00%	'	55.00%
Dividend yield	0.00%	0.00%	0.00%	0.00%
Minimum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Volatility	'	'	48.00%	'
Risk-free interest rate	1.40%	0.62%	0.70%	0.62%
Maximum [Member]	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'
Volatility	'	'	55.00%	'
Risk-free interest rate	1.65%	0.71%	1.65%	1.02%

Common_Stock_Allocation_of_Sto

Common Stock - Allocation of Stock-Based Compensation Expense to Statements of Operations (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Employee stock-based compensation	$2,198	$566	$5,100	$1,163
Cost of revenue [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Employee stock-based compensation	61	9	121	25
Research and development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Employee stock-based compensation	773	163	1,684	384
Sales and marketing [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Employee stock-based compensation	571	169	1,444	372
General and administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Employee stock-based compensation	$793	$225	$1,851	$382

Net_Loss_Per_Share_Calculation

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Detail) (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
Earnings Per Share [Abstract]	'	'	'	'
Net loss	($8,611)	($3,208)	($27,049)	($8,585)
Weighted-average shares used to compute basic and diluted net loss per share	46,262	2,545	25,587	2,499
Basic and diluted net loss per share	($0.19)	($1.26)	($1.06)	($3.44)

Net_Loss_Per_Share_Securities_

Net Loss Per Share - Securities were excluded from Calculation of Diluted Net Loss Per Share (Detail)	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 [Line Items]	'	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	12,948	44,741	12,948	44,741
Redeemable convertible preferred stock [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	0	33,897	0	33,897
Employee stock options [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	12,833	9,834	12,833	9,834
Convertible preferred stock warrants [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	0	1,010	0	1,010
Common stock warrants [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	115	0	115	0

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Tax Disclosure [Abstract]	'	'	'	'
Effective tax rate (less than)	1.00%	1.00%	1.00%	1.00%

Employee_Benefit_Plan_Addition

Employee Benefit Plan - Additional Information (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]	'	'
Employer contribution in the defined contribution plan	$0	$0

Concentration_Customers_With_1

Concentration - Customers With 10% or Greater of Total Accounts Receivable and Net Revenue (Detail) (Customer A [Member])	9 Months Ended	12 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
	Percentage of Accounts Receivable [Member]	Percentage of Accounts Receivable [Member]	Percentage of Revenue [Member]	Percentage of Revenue [Member]	Percentage of Revenue [Member]	Percentage of Revenue [Member]
Concentration Risk [Line Items]	'	'	'	'	'	'
Concentration risk percentage	38.00%	22.00%	50.00%	43.00%	45.00%	47.00%

Segment_Information_Additional

Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013
	Segment
Segment Reporting [Abstract]	'
Number of operating segment	1
Number of reporting segment	1

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)	1 Months Ended
In Millions, unless otherwise specified	Oct. 31, 2013
Subsequent Event [Member]	'
Subsequent Event [Line Items]	'
Proceeds from sale of lease receivables	$7.30