Cyan (CYNI) 10-K 25 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Mar. 18, 2014	Jun. 30, 2013
Document Document And Entity Information [Abstract]	'	'	'
Document Type	'10-K	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
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	'	46,764,987	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$268.70

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$32,509	$20,221
Marketable securities	31,639	0
Accounts receivable (net of allowance for doubtful accounts of $147 and zero at December 31, 2013 and 2012)	14,558	19,200
Short-term lease receivable	201	0
Inventories	20,746	14,049
Deferred costs	8,286	8,228
Prepaid expenses and other	1,378	930
Total current assets	109,317	62,628
Property and equipment, net	11,155	6,485
Long-term lease receivable	403	0
Other assets	645	1,676
Total assets	121,520	70,789
Current liabilities:	'	'
Accounts payable	8,474	11,842
Accrued liabilities	3,786	3,636
Accrued compensation	4,895	3,743
Revolving loan	0	7,563
Term loan, current portion	1,604	0
Deferred revenue	17,516	15,597
Preferred stock warrant liability	0	6,254
Other liabilities	849	74
Total current liabilities	37,124	48,709
Term loan, non-current portion	3,396	5,000
Deferred revenue	1,577	1,820
Deferred rent	486	182
Total liabilities	42,583	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	206,300	3,514
Accumulated other comprehensive loss	-86	-19
Accumulated deficit	-127,282	-86,550
Total stockholders’ equity (deficit)	78,937	-83,055
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	$121,520	$70,789

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Statement of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$147,000	$0
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	46,536,436	2,575,220
Common stock, shares outstanding	46,536,436	2,575,220

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Revenue	$116,582	$95,872	$40,421
Cost of revenue	68,376	57,315	27,074
Gross profit	48,206	38,557	13,347
Operating expenses:	'	'	'
Research and development	32,609	18,447	12,986
Sales and marketing	40,102	25,243	12,825
General and administrative	13,082	6,055	3,310
Total operating expenses	85,793	49,745	29,121
Loss from operations	-37,587	-11,188	-15,774
Interest expense	-367	-33	-419
Other income (expense), net	-2,635	-5,340	322
Total other expense, net	-3,002	-5,373	-97
Loss before provision for income taxes	-40,589	-16,561	-15,871
Provision for income taxes	143	40	14
Net loss	($40,732)	($16,601)	($15,885)
Basic and diluted net loss per share	($1.32)	($6.60)	($6.63)
Weighted-average number of shares used in computing basic and diluted net loss per share	30,836	2,515	2,396

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Loss (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net loss	($40,732)	($16,601)	($15,885)
Other comprehensive income (loss):	'	'	'
Foreign currency translation adjustments	-83	8	-27
Unrealized gains (losses) on available for sale securities, net of tax	16	0	0
Total other comprehensive income (loss)	-67	8	-27
Comprehensive loss	($40,799)	($16,593)	($15,912)

Consolidated_Statements_of_Red

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) Statement (USD $)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Accumulated Deficit [Member]	Redeemable Convertible Preferred Stock [Member]	Series E Redeemable Convertible Preferred Stock [Member]	Series F Redeemable Convertible Preferred Stock [Member]
In Thousands, except Share data, unless otherwise specified
Beginning Balance at Dec. 31, 2010	($53,578)	$0	$486	$0	($54,064)	'	'	'
Beginning Balance at Dec. 31, 2010	'	'	'	'	'	87,705	'	'
Beginning Balance, Shares at Dec. 31, 2010	'	'	'	'	'	31,648,024	'	'
Beginning Balance, Shares at Dec. 31, 2010	'	2,316,041	'	'	'	'	'	'
Increase (Decrease) in Temporary Equity [Roll Forward]	'	'	'	'	'	'	'	'
Issuance of redeemable convertible preferred stock, shares	'	'	'	'	'	'	110,446	2,138,535
Issuance of redeemable convertible preferred stock	'	'	'	'	'	'	500	9,928
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options, shares	'	124,730	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options	50	'	50	'	'	'	'	'
Unrealized gains on available for sale securities	0	'	'	'	'	'	'	'
Stock-based compensation	765	'	765	'	'	'	'	'
Foreign currency translation adjustment	-27	'	'	-27	'	'	'	'
Net loss	-15,885	'	'	'	-15,885	'	'	'
Ending Balance at Dec. 31, 2011	-68,675	0	1,301	-27	-69,949	'	'	'
Ending Balance at Dec. 31, 2011	'	'	'	'	'	98,133	'	'
Ending Balance, Shares at Dec. 31, 2011	'	'	'	'	'	33,897,005	'	'
Ending Balance, Shares at Dec. 31, 2011	'	2,440,771	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options, shares	'	134,449	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options	116	'	116	'	'	'	'	'
Unrealized gains on available for sale securities	0	'	'	'	'	'	'	'
Stock-based compensation	2,097	'	2,097	'	'	'	'	'
Foreign currency translation adjustment	8	'	'	8	'	'	'	'
Net loss	-16,601	'	'	'	-16,601	'	'	'
Ending Balance at Dec. 31, 2012	-83,055	0	3,514	-19	-86,550	'	'	'
Ending Balance, Shares at Dec. 31, 2012	33,897,005	'	'	'	'	33,897,005	'	'
Ending Balance, Shares at Dec. 31, 2012	'	2,575,220	'	'	'	'	'	'
Beginning Balance at Dec. 31, 2012	'	'	'	'	'	98,133	'	'
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options, shares	289,479	289,479	'	'	'	'	'	'
Issuance of common stock upon exercise of stock options	412	0	412	'	'	'	'	'
Issuance of common stock upon initial public offering (IPO), net of issuance costs of $3,854, shares	'	8,899,022	'	'	'	'	'	'
Issuance of common stock upon initial public offering (IPO), net of issuance costs of $3,854	87,185	2	87,183	'	'	'	'	'
Conversion of convertible preferred stock to common stock upon IPO, shares	'	33,897,005	'	'	'	-33,897,005	'	'
Conversion of convertible preferred stock to common stock upon IPO	98,133	3	98,130	'	'	-98,133	'	'
Reclassification of preferred stock warrant liability upon IPO, shares	'	469,717	'	'	'	'	'	'
Reclassification of preferred stock warrant liability upon IPO	8,856	'	8,856	'	'	'	'	'
Exercise of preferred stock warrants upon IPO, shares	'	405,993	'	'	'	'	'	'
Exercise of preferred stock warrants upon IPO	975	'	975	'	'	'	'	'
Unrealized gains on available for sale securities	16	'	'	16	'	'	'	'
Stock-based compensation	7,230	'	7,230	'	'	'	'	'
Foreign currency translation adjustment	-83	'	'	-83	'	'	'	'
Net loss	-40,732	'	'	'	-40,732	'	'	'
Ending Balance at Dec. 31, 2013	78,937	5	206,300	-86	-127,282	'	'	'
Ending Balance at Dec. 31, 2013	'	'	'	'	'	$0	'	'
Ending Balance, Shares at Dec. 31, 2013	0	'	'	'	'	0	'	'
Ending Balance, Shares at Dec. 31, 2013	'	46,536,436	'	'	'	'	'	'

Consolidated_Statements_of_Red1

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit) (Parenthetical) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
		Series F Redeemable Convertible Preferred Stock [Member]
Redeemable convertible preferred stock issuance costs	'	$71
Common stock issuance costs	$3,854	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities	'	'	'
Net loss	($40,732)	($16,601)	($15,885)
Adjustments to reconcile net loss to net cash used in operating activities:	'	'	'
Depreciation and amortization	2,721	1,801	1,358
Noncash interest expense	0	0	20
Stock-based compensation	7,249	2,097	765
Change in fair value for warrants	2,602	5,354	-313
Changes in operating assets and liabilities:	'	'	'
Accounts receivable	4,642	-12,674	-3,514
Lease receivable	-604	0	0
Inventories	-7,733	-8,162	-1,914
Deferred costs	-58	-5,924	-2,304
Prepaid expenses and other assets	-448	-586	-70
Accounts payable	-2,846	6,483	1,863
Accrued liabilities	1,478	1,133	1,027
Accrued compensation	1,152	2,337	547
Deferred revenue	1,676	12,198	5,046
Deferred rent	344	81	-49
Net cash used in operating activities	-30,557	-12,463	-13,423
Investing activities	'	'	'
Purchases of property and equipment	-6,111	-5,698	-2,772
Purchase of available for sale securities	-31,639	0	0
Purchase of other investment	-500	0	0
Net cash used in investing activities	-38,250	-5,698	-2,772
Financing activities	'	'	'
Proceeds from the issuance of redeemable convertible preferred stock, net of issuance costs	0	0	10,428
Proceeds from initial public offering (IPO), net of issuance costs	87,394	0	0
Proceeds from stock-based compensation programs	412	116	50
Proceeds from exercise of preferred stock warrants upon IPO	975	0	0
Borrowings under revolving loan and term loan facilities	0	12,563	0
Repayments of borrowings	-7,563	-45	-2,458
Payments on capital leases	-58	0	0
Repayment on sale-leaseback	0	0	-132
Net cash provided by financing activities	81,160	12,634	7,888
Effect of exchange rate changes on cash and cash equivalents	-65	8	-27
Net increase (decrease) in cash and cash equivalents	12,288	-5,519	-8,334
Cash and cash equivalents at beginning of period	20,221	25,740	34,074
Cash and cash equivalents at end of period	32,509	20,221	25,740
Supplemental disclosures of cash flow information	'	'	'
Cash paid for interest	361	43	399
Non-cash investing and financing activities	'	'	'
Property and equipment included in accounts payable	1,183	832	105
Deferred offering costs in accounts payable and accrued liabilities	0	1,537	0
Conversion of convertible preferred stock into common stock upon IPO	98,133	0	0
Reclassification of preferred stock warrant liability upon IPO	$8,856	$0	$0

Organization_and_Significant_A

Organization and Significant Accounting Policies	12 Months Ended
	Dec. 31, 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 issued 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 $87.2 million, net of underwriting discounts and commissions and issuance expenses. Upon the closing of the IPO, all previously outstanding shares of the Company’s outstanding convertible preferred stock automatically converted into 33,897,005 shares of common stock. In addition, 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. In November 2013, the remaining warrants to purchase common stock were net exercised resulting in the issuance of 83,349 shares of common stock.
	Principles of Consolidation — The Company's consolidated financial statements include its accounts and the accounts of its wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated.
	Fiscal Periods — The Company operates on fiscal periods ending on the last day of the respective calendar quarter.
	Use of Estimates — The preparation of financial statements in accordance with Generally Accepted Accounting Principles (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, inventory valuation, excess and obsolete inventory, allowances for obligations to its contract manufacturer, useful lives assigned to long-lived assets, sales returns reserve, the fair value of stock awards, warranty costs, contingencies, accounting for income taxes, including the determination of the timing of the establishment or release of our valuation allowance related to our deferred tax asset balances and reserves for uncertain tax positions, and prior to the Company's initial public offering, the fair value of common and redeemable convertible preferred stock and related warrants. Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.
	Cash and Cash Equivalents — The Company considers all highly liquid investments with an original or remaining maturity of three months or less, when purchased, to be cash equivalents. At December 31, 2013 and 2012 cash equivalents consist primarily of money market funds, the cost of which approximates fair value.
	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.
	Marketable securities, which are classified as available for sale at December 31, 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 the purchase of marketable securities to investment grade securities. Marketable securities that are downgraded after purchase are evaluated on a case by case basis by management to determine if they should be held or sold. 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.
	Management believes that the financial institutions that hold the Company’s cash, cash equivalents and marketable securities are financially sound and, accordingly, minimal credit risk exists with respect to these cash, cash equivalents and marketable securities.
	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 in the United States as well as those in international locations. 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 evaluations 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 $0.1 million allowance for doubtful accounts recorded as of December 31, 2013 and no allowance for doubtful accounts recorded as of December 31, 2012.
	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 or up until the point in time at which the lease receivable is sold to a third party financing organization. Aside from its standard product warranty which is provided in the normal course of business, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Pursuant to such a sale, if the Company retains no substantial risk of default by the lessee nor provides any guarantee of residual value of the underlying leased equipment, then the related lease receivables will be derecognized.
	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 evaluations 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 any 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 for potential reserve 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 the Company’s consolidated financial position and results of operations. As of December 31, 2013 the Company had $0.6 million of lease receivables and no allowance for credit losses as of that date. The Company had no lease receivables as of December 31, 2012.
	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.
	Foreign Currency Translation — The Company’s revenue contracts are denominated in U.S. dollars, but certain operating expenses are incurred in various foreign currencies. Generally, the functional currency of the Company’s foreign operations is the local country’s currency. For those entities where the functional currency is the local country's currency, the expenses of operations outside the U.S. are translated into U.S. dollars using average exchange rates for the period reported, while assets and liabilities of operations outside the U.S. are translated into U.S. dollars using the end-of-period exchange rates.
	Foreign currency translation adjustments not affecting net loss are included in stockholders’ deficit as a component of accumulated other comprehensive loss in the accompanying consolidated balance sheets.
	The revaluation effect of foreign currency fluctuations is recorded as foreign currency gain (loss) and included in other income (expense) in the accompanying consolidated statements of operations.
	Property and Equipment, Net — Property and equipment are stated at cost less accumulated depreciation and are depreciated on a straight-line basis over the estimated useful lives of the assets, generally three to five years. Leasehold improvements are amortized over the shorter of their estimated useful life, generally five to ten years, or the related remaining lease term. The costs of repairs and maintenance are expensed when incurred, while expenditures for refurbishments and improvements that significantly add to the productive capacity or extend the useful life of an asset are capitalized. When assets are retired or sold, the asset cost and related accumulated depreciation are eliminated, with any remaining gain or loss reflected in the accompanying consolidated statements of operations.
	Impairment of Long-Lived Assets — The Company periodically evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that a potential impairment may have occurred. If such events or changes in circumstances arise, the Company compares the carrying amount of the long-lived assets to the estimated future undiscounted cash flows expected to be generated by the long-lived assets. If the estimated aggregate, undiscounted cash flows are less than the carrying amount of the long-lived assets, an impairment charge, calculated as the amount by which the carrying amount of the asset exceeds the fair value of the assets, is recorded. Through December 31, 2013 no impairment losses have been identified.
	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 generally range from 30 to 90 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. 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 which is provided in the normal course of business, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Pursuant to such a sale, if the Company retains no substantial risk of default by the lessee nor provides any guarantee of residual value of the underlying leased equipment, then the related lease receivables will be derecognized. 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.” Generally, the individual products and services meet the criteria for separate units of accounting and the Company recognizes 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 standalone pricing information with respect to competitors’ products. Therefore, the Company has historically 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 was sold on a standalone basis.
	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.
	Advertising Costs — Advertising costs, which are expensed and included in sales and marketing expense when incurred, were $0.3 million, $0.2 million and $0.1 million for the years ended December 31, 2013, 2012 and 2011.
	Cost of Revenue — Cost of revenue primarily consists of product manufacturing costs incurred with the Company’s contract manufacturer. Cost of revenue also includes third-party manufacturing and supply chain logistics costs, provisions for excess and obsolete inventory, warranty, hosting costs, certain allocated costs for facilities, depreciation and other expenses associated with logistics and quality control. Additionally, it includes salaries, benefits and stock-based compensation for personnel directly involved with manufacturing installation, maintenance and support services and the provision of the Company’s service offerings.
	Research and Development — Research and development costs primarily include salaries and other personnel-related expenses, contractor fees, facility costs, supplies, and depreciation of equipment associated with the design and development of new products prior to the establishment of their technological feasibility. Such costs are charged to research and development expense as incurred.
	Development costs related to software incorporated in the Company’s products incurred subsequent to the establishment of technological feasibility and prior to the product being released are capitalized and amortized over the estimated useful lives of the related products. Technological feasibility is established upon completion of a working model. Through December 31, 2013 all software development costs have been charged to research and development expense in the accompanying consolidated statements of operations.
	Warranties — The Company generally 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.
	Prior to the Company's initial public offering in May 2013, the fair values of the common stock underlying share-based payment awards was determined by the board of directors, with input from management and a third-party valuation specialist. In the absence of a publicly traded market for the Company's common stock, the board of directors determined the fair value of the common stock in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.
	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 subjective variables. These variables include the Company’s expected stock price volatility over the expected term of the awards, risk-free interest rates and expected dividends. The expected term represents the period that the award is expected to be outstanding. 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.
	In addition to assumptions used in the Black-Scholes option pricing model, the Company must also estimate a forfeiture rate to calculate the stock-based compensation of its awards. 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, which could be material, stock-based compensation is adjusted accordingly.
	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. The Company does not anticipate that the adoption of this standard will have a material effect on its financial position, results of operations, or cash flows.

Fair_Value_Disclosure

Fair Value Disclosure	12 Months Ended
	Dec. 31, 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, 2013 and December 31, 2012 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 December 31, 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 December 31, 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 December 31, 2013 based on contractual maturity, the Company had $22.9 million and $8.7 million of marketable securities maturing within one and two years. 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 Liability
	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 fair 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 were classified within Level 3 of the valuation hierarchy.
	The company performed the final re-measurement of the convertible preferred stock warrant liability 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 liability from other current liabilities to additional paid-in capital.
	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 December 31, 2013 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	13,452		$	—		$	—		$	13,452
	Marketable Securities:
	Commercial paper		$	—		$	19,687		$	—		$	19,687
	Corporate bonds		—			4,857			—			4,857
	Municipal bonds		—			1,026			—			1,026
	U.S. government-sponsored agency securities		—			2,031			—			2,031
	U.S. treasury securities		4,038			—			—			4,038
	Total marketable securities		$	4,038		$	27,601		$	—		$	31,639
	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
	There were no transfers of assets or liabilities measured at fair value between levels within the fair value hierarchy during the years ended December 31, 2013 and 2012.
	The following table shows the Company’s available-for-sale securities amortized cost, gross unrealized gains, gross unrealized losses and fair value as of December 31, 2013 (in thousands):
		Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
	Marketable securities:
	Commercial paper	$	19,683		$	5		$	1		$	19,687
	Corporate bonds	4,854			4			1			$	4,857
	Municipal bonds	1,027			—			1			$	1,026
	U.S. government-sponsored agency securities	2,029			2			—			$	2,031
	U.S. treasury securities	4,030			8			—			4,038
	Total marketable securities	$	31,623		$	19		$	3		$	31,639
	The Company regularly reviews its marketable securities portfolio to identify and evaluate instruments that have indications of possible impairment.
	As of December 31, 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 December 31, 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 December 31, 2013 and has determined that none of its marketable securities are impaired.

Balance_Sheet_Components

Balance Sheet Components	12 Months Ended
	Dec. 31, 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):
		December 31, 2013			December 31, 2012
	Cash	$	19,057		$	15,677
	Money market funds	13,452			4,544
	Total cash and cash equivalents	$	32,509		$	20,221
	Allowance for Doubtful Accounts
	The table below presents the changes in the allowance for doubtful accounts for the year ended December 31, 2013 (in thousands):
		Year Ended December 31, 2013
	Opening balance	$	—
	Provision for doubtful accounts	643
	Write offs	(496		)
	Closing balance	$	147
	Prior to the year ended December 31, 2013 the Company had recorded no allowance for doubtful accounts or write-offs.
	Lease Receivables
	A summary of the Company’s lease receivables is presented as follows (in thousands):
		December 31, 2013			December 31, 2012
	Net minimum lease payments to be received	$	639		$	—
	Less unearned interest income portion	35			—
	Total lease receivable	604			—
	Less short-term lease receivable	201			—
	Long-term lease receivable	$	403		$	—
	Approximately $0.2 million of the gross lease receivables were scheduled to mature in each of 2014, 2015 and 2016.
	Actual cash collections may differ from the contractual maturities due to early customer buyouts, refinancing, or defaults.
	In the three months ended December 31, 2013 the Company sold $9.2 million of its lease receivables to a third party financing organization at par value for total cash proceeds of $9.2 million. Pursuant to these sales, the Company retained no substantial risk of default by the lessee nor provided any guarantee of residual value of the underlying leased equipment, except for standard product warranty which is provided in the normal course of business. Consequently, the Company has met the requirements for derecognition of the related lease receivables.
	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):
		December 31, 2013			December 31, 2012
	Raw materials	$	748		$	557
	Finished goods	19,998			13,492
	Total Inventory	$	20,746		$	14,049
	During the year ended December 31, 2013, the Company recorded a $1.0 million write-down for slow moving inventory. This write-down was included as a component of cost of revenue in the year ended December 31, 2013.
	Property and Equipment, Net
	Property and equipment, net consisted of the following (in thousands):
		December 31, 2013			December 31, 2012
	Lab equipment and tooling	$	14,743		$	8,991
	Software	667			567
	Leasehold improvements	1,595			876
	Furniture and fixtures	974			413
	Computer equipment	979			719
	Property and equipment, gross	18,958			11,566
	Less accumulated depreciation and amortization	(7,803		)	(5,081		)
	Property and equipment, net	$	11,155		$	6,485
	For the years ended December 31, 2013, 2012 and 2011, depreciation and amortization expense on property and equipment was $2.7 million, $1.8 million and $1.4 million.
	Accrued Liabilities
	Accrued liabilities consisted of the following (in thousands):
		December 31, 2013			December 31, 2012
	Inventory-in-transit	$	344		$	323
	Warranty reserve (1)	1,374			1,266
	Professional fees	862			921
	Sales and use taxes	497			627
	Other	709			499
	Total accrued liabilities	$	3,786		$	3,636
	-1	Activity related to warranties is as follows (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Beginning balance	$	1,266		$	783		$	363
	Charge to cost of sales	1,553			1,106			963
	Costs incurred	(1,445		)	(623		)	(543		)
	Closing balance	$	1,374		$	1,266		$	783
	Sales Returns Reserve
	The table below presents the changes in the sales returns reserve for the year ended December 31, 2013 (in thousands):
	Year Ended December 31, 2013
Opening balance	$	—
Provision for sales returns	910
Sales returns	(712		)
Closing balance	$	198
Prior to the year ended December 31, 2013 the Company had recorded no sales returns reserve or sales returns.

Debt

Debt	12 Months Ended
	Dec. 31, 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, 2013 and December 31, 2012 the Company had drawn down $5.0 million and $5.0 million as term loans and zero and $7.6 million as revolving loans.
	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, 2013 and December 31, 2012). 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’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 as amended, 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, 2013 and December 31, 2012 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:
	2014	$	1,604
	2015	1,666
	2016	1,730
		$	5,000

Commitments_and_Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	Facility Lease
	In April 2007, the Company entered into a six-year lease 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 lease for additional space in Petaluma, California. The July 2013 lease has a ten year term, is estimated to commence on or about July 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, owns approximately 40% of the limited liability company from which the Company is leasing the office premises. As of December 31, 2013 and December 31, 2012 no amounts were included in accounts payable or accrued expenses under these agreements.
	As of December 31, 2013 and December 31, 2012 total deferred rent was $0.6 million and $0.3 million. For the years ended December 31, 2013, 2012 and 2011 rent expense was $0.8 million, $0.5 million and $0.4 million.
	Future minimum annual obligations under non-cancellable lease agreements as of December 31, 2013 are approximately as follows (in thousands):
	Year ending December 31:
	2014	$	1,237
	2015	1,293
	2016	1,199
	2017	1,330
	2018	1,331
	Thereafter	7,189
	Total	$	13,579
	Contingencies
	The Company is not party to any legal proceedings the outcome of which, it believes, if determined adversely to it, would individually or in the aggregate have a material adverse effect on the Company's future business, consolidated results of operations, cash flows or financial position. From time to time, the Company may be involved in various legal proceedings arising from the normal course of our business activities. On July 24, 2013 the Company settled the previously disclosed litigation involving a former employee. The settlement cost was recorded as a charge in the quarter ended June 30, 2013 and was not material to the Company's results of operations.
	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, 2013 and December 31, 2012 the Company has commitments to its contract manufacturer of $7.9 million and $7.1 million. These commitments include raw materials, work in progress and scheduled future orders. 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	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Redeemable Convertible Preferred Stock and Warrants	'
	Redeemable Convertible Preferred Stock and Warrants
	Upon the closing of the IPO in May 2013, 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 the Company’s Series A Preferred Stock and 102,195 shares of the Company’s Series B Preferred Stock at exercise prices of $1.30 and $2.45 per share. 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. In November 2013, the remaining warrants to purchase common stock were net exercised resulting in the issuance of 83,349 shares of common stock.
	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:
		Year Ended December 31,
		2013			2012			2011
	Expected term (years)	0.48-3.24			0.80-3.49			1.89-4.49
	Volatility	55	%		55	%		55	%
	Risk-free interest rate	0.22-0.68%			0.25-0.36%			0.25-0.83%
	Dividend yield	—			—			—
	The change in the fair value of the convertible preferred stock warrant liability during the periods presented is summarized below (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Opening balance	$	6,254			$	900			$	1,213
	Increase (decrease) in Fair Value	2,602				5,354				(313		)
	Reclassification of warrant liability to additional paid-in capital	(8,856		)		—				—
	Closing balance	$	—			$	6,254			$	900

Common_Stock

Common Stock	12 Months Ended
	Dec. 31, 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 $87.2 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 December 31, 2013 the Company had 46,536,436 shares of common stock 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.
	On January 1, 2014, an additional 2,094,194 shares of common stock were reserved for future issuance under the 2013 Equity Incentive Plan in accordance with the annual increase provision of the plan.
	Generally, stock options are granted with terms of up to 10 years and vest over a period of four years.
	A summary of the activity and changes during the year ended December 31, 2013 and a summary of information related to options exercisable and 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	(3,694,163	)	3,694,163			$	9.25
	Options exercised	—		(289,479	)		$	1.42
	Options forfeited	659,502		(659,502	)		$	3.12
	Balance at December 31, 2013	2,807,692		12,957,942			$	4.33			7.78	27,629
	Options vested and expected to vest - December 31, 2013			11,570,270			$	4.14			7.69	$	25,480
	Options exercisable - December 31, 2013			5,395,697			$	2.17			6.68	$	17,519
	The fair value of options granted to employees during the years ended December 31, 2013, 2012 and 2011 was approximately $18.4 million, $13.3 million and $2.0 million. 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:
		Year Ended December 31,
		2013		2012			2011
	Expected term (years)	6.08		6.08			6.08
	Volatility	46-55%		55	%		55-56.7%
	Risk-free interest rate	0.70-1.75%		0.62-1.02%			0.97-2.25%
	Dividend yield	—		—			—
	The following table summarizes the allocation of stock-based compensation in the accompanying consolidated statements of operations (in thousands):
		Year ended December 31,
		2013			2012				2011
	Cost of revenue	$	160		$	57			$	73
	Research and development	2,348			745				338
	Sales and marketing	2,165			656				229
	General and administrative	2,576			639				125
	Total stock-based compensation	$	7,249		$	2,097			$	765
	The weighted-average fair value per share of options granted was $4.99, $2.15 and $1.28 for the years ended December 31, 2013, 2012 and 2011.  The intrinsic value of employee options exercised for the years ended December 31, 2013, 2012 and 2011 was $1.5 million, $0.3 million and $0.3 million. At December 31, 2013, 2012 and 2011 the total unamortized stock-based compensation expense of approximately $25.7 million, $11.7 million and $2.2 million, is to be recognized over the stock options’ remaining vesting term of approximately 2.77 years, 3.22 years and 3.26 years.

Net_Loss_Per_Share

Net Loss Per Share	12 Months Ended
	Dec. 31, 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):
		Year ended December 31,
		2013				2012			2011
	Net loss	$	(40,732	)		$	(16,601	)	$	(15,885	)
	Weighted-average shares used to compute basic and diluted net loss per share	30,836				2,515			2,396
	Basic and diluted net loss per share	$	(1.32	)		$	(6.60	)	$	(6.63	)
	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):
		Year Ended December 31,
		2013			2012			2011
	Redeemable convertible preferred stock	—			33,897			33,897
	Employee stock options	12,958			10,213			4,446
	Convertible preferred stock warrants	—			1,010			1,010
		12,958			45,120			39,353

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	The following table presents domestic and foreign components of loss before provision for income taxes (in thousands):
		Year Ended December 31,
		2013				2012				2011
	United States	$	(39,068	)		$	(16,725	)		$	(15,939	)
	Foreign	(1,521		)		164				68
	Total	$	(40,589	)		$	(16,561	)		$	(15,871	)
	The components of the provision for income taxes are as follows (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Current:
	Federal	$	—			$	—			$	—
	State	20				6				1
	Foreign	156				34				13
	Total	176				$	40			$	14
	Deferred:
	Federal	—				—				—
	State	—				—				—
	Foreign	(33		)		—				—
	Total	(33		)		—				—
	Total provision	$	143			$	40			$	14
	The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented:
		Year Ended December 31,
		2013			2012			2011
	Federal income tax at statutory rate	34	%		34	%		34	%
	State income tax, net of federal benefit	2			5.2			7.4
	Foreign taxes at less than statutory rate	(1.6	)		0.1			0.1
	Intercompany transactions	(21.4	)		—			—
	Nondeductible stock-based compensation	(2.9	)		(3.0	)		(1.4	)
	Nondeductible warrant fair value adjustment	(2.2	)		(11.0	)		0.7
	Other permanent differences	(0.4	)		—			(0.4	)
	Tax credits generated in current year	4.1			—			2.9
	Valuation allowance change	(12.0	)		(25.5	)		(43.3	)
	Total	(0.4	)%		(0.2	)%		—	%
	As a result of the Company’s history of net operating losses, the domestic provision for income taxes relates to accruals for state minimum and capital base income taxes and the foreign provision for income taxes are associated with non-U.S. operations.
	The Company had unrecorded excess stock option tax benefits of $0.1 million as of December 31, 2013. These amounts will be credited to additional paid-in capital when such amounts reduce cash taxes payable.
	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. The following table presents significant components of the Company’s deferred tax assets (in thousands):
		December 31,
		2013				2012
	Deferred revenue	$	2,417			$	206
	Depreciation and amortization	(1,326		)		(241		)
	Accrued expenses and reserves	4,319				1,485
	Loss carryforwards	27,687				29,149
	Tax credit carryforwards	5,870				3,462
	Contribution carryforwards	1				1
		38,968				34,062
	Valuation allowance	(38,937		)		(34,062		)
	Net deferred tax assets	$	31			$	—
	A valuation allowance is provided when it is more likely than not that the deferred tax assets will not be realized. The Company established a full valuation allowance to offset domestic net deferred tax assets as of December 31, 2013 and 2012 due to the uncertainty of realizing future tax benefits from its net operating loss (“NOL”) carryforwards and other deferred tax assets. The valuation allowance increased by approximately $4.9 million and $4.2 million during the years ended December 31, 2013 and 2012.
	As of December 31, 2013, the Company had $81.5 million of federal and $75.9 million of state net operating loss carryforwards and $4.5 million of federal and $4.9 million of California research tax credit carryforwards available to reduce future taxable income. These net operating loss carryforwards begin to expire in 2026 for U.S. federal income tax and 2014 for state income tax purposes, and the research tax credit carryforwards begin to expire in 2027 for federal purposes, but do not expire for California purposes.
	Under Section 382 of the Tax Reform Act of 1986 and similar state provisions, the amounts of benefits from NOL and tax credit carryforwards may be impaired or limited on an annual basis in the event that the Company has a cumulative ownership change of more than 50%, as defined, over a three-year period. The annual limitation may result in the expiration of the NOL and tax credit carryforwards before utilization. The impact of any limitation that may be imposed due to current or future issuances of equity securities, including issuances with respect to acquisitions, has not been determined.
	The Company has not provided for U.S. taxes on its foreign earnings, which are intended to be indefinitely reinvested outside the U.S.  As of December 31, 2013 the Company had cumulative undistributed earnings of foreign subsidiaries of approximately $0.2 million, which are intended to be reinvested outside the U.S and for which no U.S. income or foreign withholding taxes have been recorded. Determination of the amount of unrecognized deferred tax liability with respect to such earnings is not practicable. The additional taxes on the earnings of foreign subsidiaries, if remitted, would be partially offset by U.S. tax credits for foreign taxes already paid.
	The Company has total unrecognized tax benefits as of December 31, 2013, 2012 and 2011 of approximately $6.6 million, $1.4 million and $1.2 million. No amount of the unrecognized tax benefits, if recognized, would reduce the Company’s annual effective tax rate because the benefits are in the form of deferred tax assets for which a full valuation allowance has been recorded. The Company does not anticipate a significant change to its unrecognized tax benefits over the next twelve months. The following table reflects changes in the unrecognized tax benefits (in thousands):
		December 31,
		2013				2012				2011
	Unrecognized tax benefits as of the beginning of the year	$	1,444			$	1,212			$	899
	Increase related to prior year tax provisions	202				—				—
	Decrease related to prior year tax provisions	—				—				—
	Increase related to current year tax provisions	4,980				232				313
	Unrecognized tax benefits as of the end of the year	$	6,626			$	1,444			$	1,212
	The Company recognizes interest accrued and penalties related to unrecognized tax benefits in the income tax provision. As of December 31, 2013 and 2012, the Company accrued no interest and penalties in the statement of financial position. Total interest and penalties included in the statements of operations for the years ended December 31, 2013, 2012 and 2011 are each zero.
	The Company files income tax returns in the United States, various states and certain foreign jurisdictions. The tax periods 2006 through 2013 remain open in most jurisdictions. The Company is not currently under examination by income tax authorities in federal, state or other foreign jurisdiction.

Employee_Benefit_Plan

Employee Benefit Plan	12 Months Ended
	Dec. 31, 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 years ended December 31, 2013, 2012 and 2011.

Concentration

Concentration	12 Months Ended
	Dec. 31, 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:
		Year Ended December 31,						As of December 31,
		2013		2012		2011		2013	2012
		Percentage of Revenue						Percentage of Receivables
	Windstream	39	%	45	%	37	%	*	22	%
	Telephone and Data Systems, Inc. (TDS)	11	%	*		*		*	*
	*Represents less than 10%

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 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 Company’s material operating segments, which are geographic based, qualify for aggregation due to their customer base and similarities in economic characteristics, nature of products and services, and processes for procurement, manufacturing and distribution. Consequently, the Company has one reportable business segment.
	Revenue information by location is presented below (in thousands):
		Year Ended December 31,
		2013		2012		2011
	United States	$	106,341	$	91,078	$	40,017
	Other	10,241		4,794		404
	Total revenue	$	116,582	$	95,872	$	40,421
	Property and equipment, net by location is presented below (in thousands):
		December 31, 2013		December 31, 2012
	United States	$	10,977	$	6,485
	Other	178		—
	Total property and equipment, net	$	11,155	$	6,485

Related_Parties

Related Parties	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Related Parties	'
	Related Parties
	In addition to the related party identified above, a venture capital firm that is a greater than 10% stockholder of the Company is a subsidiary of the financial institution that manages the Company's portfolio of marketable securities. The managing partner of this particular venture capital firm is also a member of the Company's board of directors.

Organization_and_Significant_A1

Organization and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 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 issued 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 $87.2 million, net of underwriting discounts and commissions and issuance expenses. Upon the closing of the IPO, all previously outstanding shares of the Company’s outstanding convertible preferred stock automatically converted into 33,897,005 shares of common stock. In addition, 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. In November 2013, the remaining warrants to purchase common stock were net exercised resulting in the issuance of 83,349 shares of common stock.
Basis of Preparation	'
	Principles of Consolidation — The Company's consolidated financial statements include its accounts and the accounts of its wholly-owned subsidiaries. Intercompany transactions and balances have been eliminated.
Fiscal Periods	'
	Fiscal Periods — The Company operates on fiscal periods ending on the last day of the respective calendar quarter.
Use of Estimates	'
	Use of Estimates — The preparation of financial statements in accordance with Generally Accepted Accounting Principles (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, inventory valuation, excess and obsolete inventory, allowances for obligations to its contract manufacturer, useful lives assigned to long-lived assets, sales returns reserve, the fair value of stock awards, warranty costs, contingencies, accounting for income taxes, including the determination of the timing of the establishment or release of our valuation allowance related to our deferred tax asset balances and reserves for uncertain tax positions, and prior to the Company's initial public offering, the fair value of common and redeemable convertible preferred stock and related warrants. Actual results could differ from those estimates, and such differences could be material to the Company’s consolidated financial position and results of operations.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents — The Company considers all highly liquid investments with an original or remaining maturity of three months or less, when purchased, to be cash equivalents. At December 31, 2013 and 2012 cash equivalents consist primarily of money market funds, the cost of which approximates fair value.
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.
	Marketable securities, which are classified as available for sale at December 31, 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 the purchase of marketable securities to investment grade securities. Marketable securities that are downgraded after purchase are evaluated on a case by case basis by management to determine if they should be held or sold. 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.
	Management believes that the financial institutions that hold the Company’s cash, cash equivalents and marketable securities are financially sound and, accordingly, minimal credit risk exists with respect to these cash, cash equivalents and marketable securities.
	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 in the United States as well as those in international locations. 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 evaluations 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 $0.1 million allowance for doubtful accounts recorded as of December 31, 2013 and no allowance for doubtful accounts recorded as of December 31, 2012.
	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 or up until the point in time at which the lease receivable is sold to a third party financing organization. Aside from its standard product warranty which is provided in the normal course of business, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Pursuant to such a sale, if the Company retains no substantial risk of default by the lessee nor provides any guarantee of residual value of the underlying leased equipment, then the related lease receivables will be derecognized.
	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 evaluations 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 any 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 for potential reserve 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 the Company’s consolidated financial position and results of operations. As of December 31, 2013 the Company had $0.6 million of lease receivables and no allowance for credit losses as of that date. The Company had no lease receivables as of December 31, 2012.
	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.
Foreign Currency Translation	'
	Foreign Currency Translation — The Company’s revenue contracts are denominated in U.S. dollars, but certain operating expenses are incurred in various foreign currencies. Generally, the functional currency of the Company’s foreign operations is the local country’s currency. For those entities where the functional currency is the local country's currency, the expenses of operations outside the U.S. are translated into U.S. dollars using average exchange rates for the period reported, while assets and liabilities of operations outside the U.S. are translated into U.S. dollars using the end-of-period exchange rates.
	Foreign currency translation adjustments not affecting net loss are included in stockholders’ deficit as a component of accumulated other comprehensive loss in the accompanying consolidated balance sheets.
	The revaluation effect of foreign currency fluctuations is recorded as foreign currency gain (loss) and included in other income (expense) in the accompanying consolidated statements of operations.
Property and Equipment, Net	'
	Property and Equipment, Net — Property and equipment are stated at cost less accumulated depreciation and are depreciated on a straight-line basis over the estimated useful lives of the assets, generally three to five years. Leasehold improvements are amortized over the shorter of their estimated useful life, generally five to ten years, or the related remaining lease term. The costs of repairs and maintenance are expensed when incurred, while expenditures for refurbishments and improvements that significantly add to the productive capacity or extend the useful life of an asset are capitalized. When assets are retired or sold, the asset cost and related accumulated depreciation are eliminated, with any remaining gain or loss reflected in the accompanying consolidated statements of operations.
Impairment of Long-Lived Assets	'
	Impairment of Long-Lived Assets — The Company periodically evaluates long-lived assets for impairment whenever events or changes in circumstances indicate that a potential impairment may have occurred. If such events or changes in circumstances arise, the Company compares the carrying amount of the long-lived assets to the estimated future undiscounted cash flows expected to be generated by the long-lived assets. If the estimated aggregate, undiscounted cash flows are less than the carrying amount of the long-lived assets, an impairment charge, calculated as the amount by which the carrying amount of the asset exceeds the fair value of the assets, is recorded. Through December 31, 2013 no impairment losses have been identified.
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 generally range from 30 to 90 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. 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 which is provided in the normal course of business, the Company has no obligation to the third party financing organizations once the lease receivables have been sold. Pursuant to such a sale, if the Company retains no substantial risk of default by the lessee nor provides any guarantee of residual value of the underlying leased equipment, then the related lease receivables will be derecognized. 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.” Generally, the individual products and services meet the criteria for separate units of accounting and the Company recognizes 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 standalone pricing information with respect to competitors’ products. Therefore, the Company has historically 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 was sold on a standalone basis.
	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.
Advertising Costs	'
	Advertising Costs — Advertising costs, which are expensed and included in sales and marketing expense when incurred, were $0.3 million, $0.2 million and $0.1 million for the years ended December 31, 2013, 2012 and 2011.
Cost of Revenue	'
	Cost of Revenue — Cost of revenue primarily consists of product manufacturing costs incurred with the Company’s contract manufacturer. Cost of revenue also includes third-party manufacturing and supply chain logistics costs, provisions for excess and obsolete inventory, warranty, hosting costs, certain allocated costs for facilities, depreciation and other expenses associated with logistics and quality control. Additionally, it includes salaries, benefits and stock-based compensation for personnel directly involved with manufacturing installation, maintenance and support services and the provision of the Company’s service offerings.
Research and Development	'
	Research and Development — Research and development costs primarily include salaries and other personnel-related expenses, contractor fees, facility costs, supplies, and depreciation of equipment associated with the design and development of new products prior to the establishment of their technological feasibility. Such costs are charged to research and development expense as incurred.
	Development costs related to software incorporated in the Company’s products incurred subsequent to the establishment of technological feasibility and prior to the product being released are capitalized and amortized over the estimated useful lives of the related products. Technological feasibility is established upon completion of a working model.
Warranties	'
	Warranties — The Company generally 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.
	Prior to the Company's initial public offering in May 2013, the fair values of the common stock underlying share-based payment awards was determined by the board of directors, with input from management and a third-party valuation specialist. In the absence of a publicly traded market for the Company's common stock, the board of directors determined the fair value of the common stock in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Guide, Valuation of Privately-Held-Company Equity Securities Issued as Compensation.
	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 subjective variables. These variables include the Company’s expected stock price volatility over the expected term of the awards, risk-free interest rates and expected dividends. The expected term represents the period that the award is expected to be outstanding. 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.
	In addition to assumptions used in the Black-Scholes option pricing model, the Company must also estimate a forfeiture rate to calculate the stock-based compensation of its awards. 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, which could be material, stock-based compensation is adjusted accordingly.

Fair_Value_Disclosure_Tables

Fair Value Disclosure (Tables)	12 Months Ended
	Dec. 31, 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 December 31, 2013 (in thousands):
			Level 1			Level 2			Level 3			Total
	Assets:
	Cash Equivalents:
	Money Market Funds		$	13,452		$	—		$	—		$	13,452
	Marketable Securities:
	Commercial paper		$	—		$	19,687		$	—		$	19,687
	Corporate bonds		—			4,857			—			4,857
	Municipal bonds		—			1,026			—			1,026
	U.S. government-sponsored agency securities		—			2,031			—			2,031
	U.S. treasury securities		4,038			—			—			4,038
	Total marketable securities		$	4,038		$	27,601		$	—		$	31,639
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 December 31, 2013 (in thousands):
		Amortized Cost			Gross Unrealized Gains			Gross Unrealized Losses			Fair Value
	Marketable securities:
	Commercial paper	$	19,683		$	5		$	1		$	19,687
	Corporate bonds	4,854			4			1			$	4,857
	Municipal bonds	1,027			—			1			$	1,026
	U.S. government-sponsored agency securities	2,029			2			—			$	2,031
	U.S. treasury securities	4,030			8			—			4,038
	Total marketable securities	$	31,623		$	19		$	3		$	31,639

Balance_Sheet_Components_Table

Balance Sheet Components (Tables)	12 Months Ended
	Dec. 31, 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):
		December 31, 2013			December 31, 2012
	Cash	$	19,057		$	15,677
	Money market funds	13,452			4,544
	Total cash and cash equivalents	$	32,509		$	20,221
Schedule of Allowance for Doubtful Accounts	'
	The table below presents the changes in the allowance for doubtful accounts for the year ended December 31, 2013 (in thousands):
		Year Ended December 31, 2013
	Opening balance	$	—
	Provision for doubtful accounts	643
	Write offs	(496		)
	Closing balance	$	147
Schedule of Future Minimum Lease Payments for Capital Leases	'
	A summary of the Company’s lease receivables is presented as follows (in thousands):
		December 31, 2013			December 31, 2012
	Net minimum lease payments to be received	$	639		$	—
	Less unearned interest income portion	35			—
	Total lease receivable	604			—
	Less short-term lease receivable	201			—
	Long-term lease receivable	$	403		$	—
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):
		December 31, 2013			December 31, 2012
	Raw materials	$	748		$	557
	Finished goods	19,998			13,492
	Total Inventory	$	20,746		$	14,049
Schedule of Property and Equipment, Net	'
	Property and equipment, net consisted of the following (in thousands):
		December 31, 2013			December 31, 2012
	Lab equipment and tooling	$	14,743		$	8,991
	Software	667			567
	Leasehold improvements	1,595			876
	Furniture and fixtures	974			413
	Computer equipment	979			719
	Property and equipment, gross	18,958			11,566
	Less accumulated depreciation and amortization	(7,803		)	(5,081		)
	Property and equipment, net	$	11,155		$	6,485
Schedule of Accrued Liabilities	'
	Accrued liabilities consisted of the following (in thousands):
		December 31, 2013			December 31, 2012
	Inventory-in-transit	$	344		$	323
	Warranty reserve (1)	1,374			1,266
	Professional fees	862			921
	Sales and use taxes	497			627
	Other	709			499
	Total accrued liabilities	$	3,786		$	3,636
	-1	Activity related to warranties is as follows (in thousands):
		Year Ended December 31,
		2013			2012			2011
	Beginning balance	$	1,266		$	783		$	363
	Charge to cost of sales	1,553			1,106			963
	Costs incurred	(1,445		)	(623		)	(543		)
	Closing balance	$	1,374		$	1,266		$	783
Schedule of Sales Returns Reserve	'
	The table below presents the changes in the sales returns reserve for the year ended December 31, 2013 (in thousands):
		Year Ended December 31, 2013
	Opening balance	$	—
	Provision for sales returns	910
	Sales returns	(712		)
	Closing balance	$	198

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 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:
	2014	$	1,604
	2015	1,666
	2016	1,730
		$	5,000

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 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 December 31, 2013 are approximately as follows (in thousands):
	Year ending December 31:
	2014	$	1,237
	2015	1,293
	2016	1,199
	2017	1,330
	2018	1,331
	Thereafter	7,189
	Total	$	13,579

Redeemable_Convertible_Preferr1

Redeemable Convertible Preferred Stock and Warrants (Tables)	12 Months Ended
	Dec. 31, 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:
		Year Ended December 31,
		2013			2012			2011
	Expected term (years)	0.48-3.24			0.80-3.49			1.89-4.49
	Volatility	55	%		55	%		55	%
	Risk-free interest rate	0.22-0.68%			0.25-0.36%			0.25-0.83%
	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 is summarized below (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Opening balance	$	6,254			$	900			$	1,213
	Increase (decrease) in Fair Value	2,602				5,354				(313		)
	Reclassification of warrant liability to additional paid-in capital	(8,856		)		—				—
	Closing balance	$	—			$	6,254			$	900

Common_Stock_Tables

Common Stock (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Allocation of Stock-Based Compensation Expense to Statements of Operations	'
	A summary of the activity and changes during the year ended December 31, 2013 and a summary of information related to options exercisable and 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	(3,694,163	)	3,694,163			$	9.25
	Options exercised	—		(289,479	)		$	1.42
	Options forfeited	659,502		(659,502	)		$	3.12
	Balance at December 31, 2013	2,807,692		12,957,942			$	4.33			7.78	27,629
	Options vested and expected to vest - December 31, 2013			11,570,270			$	4.14			7.69	$	25,480
	Options exercisable - December 31, 2013			5,395,697			$	2.17			6.68	$	17,519
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:
		Year Ended December 31,
		2013		2012			2011
	Expected term (years)	6.08		6.08			6.08
	Volatility	46-55%		55	%		55-56.7%
	Risk-free interest rate	0.70-1.75%		0.62-1.02%			0.97-2.25%
	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):
		Year ended December 31,
		2013			2012				2011
	Cost of revenue	$	160		$	57			$	73
	Research and development	2,348			745				338
	Sales and marketing	2,165			656				229
	General and administrative	2,576			639				125
	Total stock-based compensation	$	7,249		$	2,097			$	765

Net_Loss_Per_Share_Tables

Net Loss Per Share (Tables)	12 Months Ended
	Dec. 31, 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):
		Year ended December 31,
		2013				2012			2011
	Net loss	$	(40,732	)		$	(16,601	)	$	(15,885	)
	Weighted-average shares used to compute basic and diluted net loss per share	30,836				2,515			2,396
	Basic and diluted net loss per share	$	(1.32	)		$	(6.60	)	$	(6.63	)
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):
		Year Ended December 31,
		2013			2012			2011
	Redeemable convertible preferred stock	—			33,897			33,897
	Employee stock options	12,958			10,213			4,446
	Convertible preferred stock warrants	—			1,010			1,010
		12,958			45,120			39,353

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Schedule of Income before Income Tax, Domestic and Foreign	'
	The following table presents domestic and foreign components of loss before provision for income taxes (in thousands):
		Year Ended December 31,
		2013				2012				2011
	United States	$	(39,068	)		$	(16,725	)		$	(15,939	)
	Foreign	(1,521		)		164				68
	Total	$	(40,589	)		$	(16,561	)		$	(15,871	)
Schedule of Components of Income Tax Expense (Benefit)	'
	The components of the provision for income taxes are as follows (in thousands):
		Year Ended December 31,
		2013				2012				2011
	Current:
	Federal	$	—			$	—			$	—
	State	20				6				1
	Foreign	156				34				13
	Total	176				$	40			$	14
	Deferred:
	Federal	—				—				—
	State	—				—				—
	Foreign	(33		)		—				—
	Total	(33		)		—				—
	Total provision	$	143			$	40			$	14
Schedule of Effective Income Tax Rate Reconciliation	'
	The following table presents a reconciliation of the statutory federal rate and the Company’s effective tax rate for the periods presented:
		Year Ended December 31,
		2013			2012			2011
	Federal income tax at statutory rate	34	%		34	%		34	%
	State income tax, net of federal benefit	2			5.2			7.4
	Foreign taxes at less than statutory rate	(1.6	)		0.1			0.1
	Intercompany transactions	(21.4	)		—			—
	Nondeductible stock-based compensation	(2.9	)		(3.0	)		(1.4	)
	Nondeductible warrant fair value adjustment	(2.2	)		(11.0	)		0.7
	Other permanent differences	(0.4	)		—			(0.4	)
	Tax credits generated in current year	4.1			—			2.9
	Valuation allowance change	(12.0	)		(25.5	)		(43.3	)
	Total	(0.4	)%		(0.2	)%		—	%
Schedule of Deferred Tax Assets and Liabilities	'
	The following table presents significant components of the Company’s deferred tax assets (in thousands):
		December 31,
		2013				2012
	Deferred revenue	$	2,417			$	206
	Depreciation and amortization	(1,326		)		(241		)
	Accrued expenses and reserves	4,319				1,485
	Loss carryforwards	27,687				29,149
	Tax credit carryforwards	5,870				3,462
	Contribution carryforwards	1				1
		38,968				34,062
	Valuation allowance	(38,937		)		(34,062		)
	Net deferred tax assets	$	31			$	—
Schedule of Unrecognized Tax Benefits Roll Forward	'
	The following table reflects changes in the unrecognized tax benefits (in thousands):
		December 31,
		2013				2012				2011
	Unrecognized tax benefits as of the beginning of the year	$	1,444			$	1,212			$	899
	Increase related to prior year tax provisions	202				—				—
	Decrease related to prior year tax provisions	—				—				—
	Increase related to current year tax provisions	4,980				232				313
	Unrecognized tax benefits as of the end of the year	$	6,626			$	1,444			$	1,212

Concentration_Tables

Concentration (Tables)	12 Months Ended
	Dec. 31, 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:
		Year Ended December 31,						As of December 31,
		2013		2012		2011		2013	2012
		Percentage of Revenue						Percentage of Receivables
	Windstream	39	%	45	%	37	%	*	22	%
	Telephone and Data Systems, Inc. (TDS)	11	%	*		*		*	*
	*Represents less than 10%

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Schedule of Revenue and Property and Equipment, net , by Geographical Areas	'
	Revenue information by location is presented below (in thousands):
		Year Ended December 31,
		2013		2012		2011
	United States	$	106,341	$	91,078	$	40,017
	Other	10,241		4,794		404
	Total revenue	$	116,582	$	95,872	$	40,421
	Property and equipment, net by location is presented below (in thousands):
		December 31, 2013		December 31, 2012
	United States	$	10,977	$	6,485
	Other	178		—
	Total property and equipment, net	$	11,155	$	6,485

Organization_and_Significant_A2

Organization and Significant Accounting Policies - Additional Information (Detail) (USD $)

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

1 Months Ended

12 Months Ended

31-May-13

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Nov. 30, 2013

Dec. 31, 2013

31-May-13

31-May-13

31-May-13

31-May-13

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Common Stock [Member]

Common Stock [Member]

IPO [Member]

IPO [Member]

IPO [Member]

IPO [Member]

Minimum [Member]

Maximum [Member]

Property and Equipment [Member]

Property and Equipment [Member]

Leasehold improvements

Leasehold improvements

Preferred Stock [Member]

Common Stock [Member]

Warrant [Member]

Minimum [Member]

Maximum [Member]

Minimum [Member]

Maximum [Member]

Warrants To Purchase Convertible Preferred Stock Converted To Warrants To Purchase Common Stock [Member]

Conversion of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property and equipment, useful life

'

'

'

'

'

'

'

'

'

'

'

'

'3 years

'5 years

'5 years

'10 years

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

'

'

'

'

'

'

Payment terms to customers

'

'

'

'

'

'

'

'

'

'

'30 days

'90 days

'

'

'

'

Software license term

'

'

'

'

'

'

'

'

'

'

'12 months

'36 months

'

'

'

'

Aggregate net proceeds from offering, net of underwriting discounts and commissions

$87,200,000

$87,394,000

$0

$0

'

'

$87,200,000

'

'

'

'

'

'

'

'

'

Outstanding warrants to purchase convertible preferred stock converted into shares of common stock, shares

'

'

'

'

83,349

'

'

'

792,361

'

'

'

'

'

'

'

Allowance for doubtful accounts

'

147,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

Threshold recognizes tax benefit

'

50.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Lease term

'

'3 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total lease receivable

'

604,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

Allowance for credit losses

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Advertising costs

'

$300,000

$200,000

$100,000

'

'

'

'

'

'

'

'

'

'

'

'

Warranty period description

'

'The Company generally 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 $)	Dec. 31, 2013
In Millions, unless otherwise specified
Fair Value Disclosures [Abstract]	'
Marketable securities maturing within one year	$22.90
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 $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	$31,639	'
Commercial paper	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	19,687	'
Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,857	'
Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,026	'
U.S. government-sponsored agency securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	2,031	'
U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,038	'
Recurring [Member] | Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,038	'
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	4,038	'
Recurring [Member] | Level 1 [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	13,452	4,544
Recurring [Member] | Level 2 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	27,601	'
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	19,687	'
Recurring [Member] | Level 2 [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,857	'
Recurring [Member] | Level 2 [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,026	'
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	2,031	'
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	31,639	'
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	19,687	'
Recurring [Member] | Total [Member] | Corporate bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,857	'
Recurring [Member] | Total [Member] | Municipal bonds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	1,026	'
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	2,031	'
Recurring [Member] | Total [Member] | U.S. treasury securities	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Marketable Securities	4,038	'
Recurring [Member] | Total [Member] | Money Market Funds	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Cash Equivalents	$13,452	$4,544

Fair_Value_Disclosure_Amortize

Fair Value Disclosure - Amortized Cost Reconciliation (Details) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	$31,623
Gross Unrealized Gains	19
Gross Unrealized Losses	3
Fair Value	31,639
Commercial paper	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	19,683
Gross Unrealized Gains	5
Gross Unrealized Losses	1
Fair Value	19,687
Corporate bonds	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	4,854
Gross Unrealized Gains	4
Gross Unrealized Losses	1
Fair Value	4,857
Municipal bonds	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	1,027
Gross Unrealized Gains	0
Gross Unrealized Losses	1
Fair Value	1,026
U.S. government-sponsored agency securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	2,029
Gross Unrealized Gains	2
Gross Unrealized Losses	0
Fair Value	2,031
U.S. treasury securities	'
Schedule of Available-for-sale Securities [Line Items]	'
Amortized Cost	4,030
Gross Unrealized Gains	8
Gross Unrealized Losses	0
Fair Value	$4,038

Balance_Sheet_Components_Addit

Balance Sheet Components - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Capital Leases, Future Minimum Payments Receivable, Fiscal Year Maturity [Abstract]	'	'	'	'
Gross lease receivables were scheduled to mature in 2014	$200,000	$200,000	'	'
Gross lease receivables were scheduled to mature in 2015	200,000	200,000	'	'
Gross lease receivables were scheduled to mature in 2016	200,000	200,000	'	'
Lease receivables sold	9,200,000	'	'	'
Cash proceeds from sale of lease receivables	9,200,000	'	'	'
Inventory write-down	'	1,000,000	'	'
Depreciation and amortization expense	'	$2,721,000	$1,801,000	$1,358,000

Balance_Sheet_Components_Sched

Balance Sheet Components - Schedule of Cash and Cash Equivalents (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Cash	$19,057	$15,677	'	'
Money market funds	13,452	4,544	'	'
Total cash and cash equivalents	$32,509	$20,221	$25,740	$34,074

Balance_Sheet_Components_Allow

Balance Sheet Components - Allowance for Doubtful Accounts Receivable (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]	'
Opening balance	$0
Provision for doubtful accounts	643
Write offs	-496
Closing balance	$147

Balance_Sheet_Components_Capit

Balance Sheet Components - Capital lease receivables (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Net minimum lease payments to be received	$639	$0
Less unearned interest income portion	35	0
Total lease receivable	604	0
Less short-term lease receivable	201	0
Long-term lease receivable	$403	$0

Balance_Sheet_Components_Sched1

Balance Sheet Components - Schedule of Inventories (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'
Raw materials	$748	$557
Finished goods	19,998	13,492
Total Inventory	$20,746	$14,049

Balance_Sheet_Components_Sched2

Balance Sheet Components - Schedule of Property and Equipment, Net (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$18,958	$11,566
Less accumulated depreciation and amortization	-7,803	-5,081
Property and equipment, net	11,155	6,485
Lab equipment and tooling	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	14,743	8,991
Software	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	667	567
Leasehold improvements	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	1,595	876
Furniture and fixtures	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	974	413
Computer equipment	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$979	$719

Balance_Sheet_Components_Sched3

Balance Sheet Components - Schedule of Accrued Liabilities (Detail) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
In Thousands, unless otherwise specified
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'	'
Inventory-in-transit	$344	$323	'	'
Warranty reserve (1)	1,374	1,266	783	363
Professional fees	862	921	'	'
Sales and use taxes	497	627	'	'
Other	709	499	'	'
Total accrued liabilities	$3,786	$3,636	'	'

Balance_Sheet_Components_Sched4

Balance Sheet Components - Schedule of Activity Related to Warranties (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'	'	'
Beginning balance	$1,266	$783	$363
Charge to cost of sales	1,553	1,106	963
Costs incurred	-1,445	-623	-543
Closing balance	$1,374	$1,266	$783

Balance_Sheet_Components_Allow1

Balance Sheet Components - Allowance for Sales Returns (Details) (Allowance for Sales Returns [Member], USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Allowance for Sales Returns [Member]	'
Movement in Valuation Allowances and Reserves [Roll Forward]	'
Opening balance	$0
Provision for sales returns	910
Sales returns	-712
Closing balance	$198

Debt_Additional_Information_De

Debt - Additional Information (Detail) (Loan and Security Agreement [Member], Silicon Valley Bank [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 21, 2012
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%	'	'
Revolving loans [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Loan facility, maximum borrowing capacity	'	'	10,000,000
Loan facility, amount outstanding	0	7,600,000	'
Numeric percent in valuation of floating rate	3.25%	'	'
Prime rate in valuation of floating rate	3.25%	3.25%	'
Term loan [Member]	'	'	'
Debt Instrument [Line Items]	'	'	'
Loan facility, maximum borrowing capacity	'	'	5,000,000
Loan 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%	'	'

Debt_Estimated_Principal_Payme

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

Commitments_and_Contingencies_1

Commitments and Contingencies - Additional Information (Detail) (USD $)	1 Months Ended		12 Months Ended
	Jul. 31, 2013	Apr. 30, 2007	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
		sqft
Property Subject to or Available for Operating Lease [Line Items]	'	'	'	'	'
Office premises for lease	'	22,780	'	'	'
Term of lease	'10 years	'6 years	'	'	'
Total base rent payable	$11,500,000	'	'	'	'
Renewal term	'5 years	'	'	'	'
Percentage of interest in limited liability company from which the Company is leasing building	'	'	40.00%	'	'
Total deferred rent	'	'	600,000	300,000	'
Rent expense	'	'	800,000	500,000	400,000
Commitments to contract manufacturer	'	'	7,900,000	7,100,000	'
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 $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
2014	$1,237
2015	1,293
2016	1,199
2017	1,330
2018	1,331
Thereafter	7,189
Total	$13,579

Redeemable_Convertible_Preferr2

Redeemable Convertible Preferred Stock and Warrants - Additional Information (Detail)	12 Months Ended				1 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	31-May-13	Nov. 30, 2013	31-May-13	31-May-13
		Series A Preferred Stock [Member]	Series B Preferred Stock [Member]	Convertible preferred stock warrants [Member]	Common Stock [Member]	IPO [Member]	Warrants To Purchase Convertible Preferred Stock Converted To Warrants To Purchase Common Stock [Member]
						Common Stock [Member]	IPO [Member]
							Warrant [Member]
Equity [Abstract]	'	'	'	'	'	'	'
Convertible preferred stock, conversion to common stock ratio	1	'	'	'	'	'	'
Class of Warrant or Right [Line Items]	'	'	'	'	'	'	'
Warrants issued to purchase preferred stock shares	'	12,806	102,195	'	'	'	'
Exercise price of warrants	'	1.3	2.45	'	'	'	'
Class of warrants exercised	'	'	'	894,596	'	'	'
Outstanding warrants to purchase convertible preferred stock converted into shares of common stock, shares	'	'	'	'	83,349	792,361	'
Conversion of stock, shares converted	'	'	'	'	'	'	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])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Volatility	55.00%	55.00%	55.00%
Dividend yield	0.00%	0.00%	0.00%
Minimum [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Expected term (years)	'5 months 23 days	'9 months 18 days	'1 year 10 months 21 days
Risk-free interest rate	0.22%	0.25%	0.25%
Maximum [Member]	'	'	'
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]	'	'	'
Expected term (years)	'3 years 2 months 27 days	'3 years 5 months 27 days	'4 years 5 months 27 days
Risk-free interest rate	0.68%	0.36%	0.83%

Redeemable_Convertible_Preferr4

Redeemable Convertible Preferred Stock and Warrants - Change in the Fair Value of the Convertible Preferred Stock Warrant Liability (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Equity [Abstract]	'	'	'
Opening balance	$6,254	$900	$1,213
Increase (decrease) in Fair Value	2,602	5,354	-313
Reclassification of warrant liability to additional paid-in capital	-8,856	0	0
Closing balance	$0	$6,254	$900

Common_Stock_Additional_Inform

Common Stock - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended					1 Months Ended		0 Months Ended
	31-May-13	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 31, 2013	Mar. 31, 2013	31-May-13	31-May-13	Jan. 02, 2014
					2013 Equity Incentive Plan [Member]	2006 Stock Plan [Member]	IPO [Member]	Preferred Stock [Member]	Subsequent Event [Member]
								IPO [Member]	2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'	'
Initial public offering common stock sold to public, shares	'	'	'	'	'	'	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	'	'
Gross proceeds from offering to the Company	'	'	'	'	'	'	$97,900,000	'	'
Net proceeds after deducting underwriters' discounts and commissions and offering expenses	87,200,000	87,394,000	0	0	'	'	87,200,000	'	'
Conversion of stock, shares converted	'	'	'	'	'	'	'	33,897,005	'
Common stock, shares outstanding	'	46,536,436	2,575,220	'	'	'	'	'	'
Common stock, shares issued	'	46,536,436	2,575,220	'	'	'	'	'	'
Common stock shares authorized	'	1,000,000,000	50,000,000	'	'	'	'	'	'
Preferred stock shares authorized	'	20,000,000	0	'	'	'	'	'	'
Common stock reserved for future issuance	'	'	'	'	3,600,000	11,400,000	'	'	'
Additional shares of common stock reserved for future issuance	'	'	'	'	'	'	'	'	2,094,194
Stock options, expiration term	'	'10 years	'	'	'	'	'	'	'
Stock options, vesting term	'	'4 years	'	'	'	'	'	'	'
Fair value of options granted	'	18,400,000	13,300,000	2,000,000	'	'	'	'	'
Weighted-average fair value of options granted	'	$4.99	$2.15	$1.28	'	'	'	'	'
Intrinsic value of employee options exercised	'	1,500,000	300,000	300,000	'	'	'	'	'
Unamortized stock-based compensation expense	'	$25,700,000	$11,700,000	$2,200,000	'	'	'	'	'
Stock options remaining vesting term	'	'2 years 9 months 7 days	'3 years 80 days	'3 years 3 months 3 days	'	'	'	'	'

Common_Stock_Summary_of_Stock_

Common Stock - Summary of Stock Options Activity (Detail) (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [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	-3,694,163	'
Shares Available for Grant, Options exercised	0	'
Shares Available for Grant, Options forfeited	659,502	'
Shares Available for Grant, End of period	2,807,692	1,242,353
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]	'	'
Number of Shares Outstanding, Beginning of period	10,212,760	'
Number of Shares Outstanding, Options reserved	0	'
Number of Shares Outstanding, Options granted	3,694,163	'
Number of Shares Outstanding, Options exercised	-289,479	'
Number of Shares Outstanding, Options forfeited	-659,502	'
Number of Shares Outstanding, End of period	12,957,942	10,212,760
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]	'	'
Weighted Average Exercise Price, Beginning of period	$2.49	'
Weighted Average Exercise Price, Options reserved	$0	'
Weighted Average Exercise Price, Options granted	$9.25	'
Weighted Average Exercise Price, Options exercised	$1.42	'
Weighted Average Exercise Price, Options forfeited	$3.12	'
Weighted Average Exercise Price, End of period	$4.33	$2.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]	'	'
Number of Shares Outstanding, Options vested and expected to vest, End of period	11,570,270	'
Weighted Average Exercise Price, Options vested and expected to vest, End of period	$4.14	'
Weighted Average Remaining Contractual Life (Years), Options vested and expected to vest	'7 years 8 months 8 days	'
Aggregate Intrinsic Value, Options vested and expected to vest, end of period	$25,480	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]	'	'
Weighted Average Remaining Contractual Life (Years)	'7 years 9 months 10 days	'8 years 4 months 24 days
Aggregate Intrinsic Value	27,629	59,456
Number of Shares Outstanding, Options exercisable, End of period	5,395,697	'
Weighted Average Exercise Price, Options exercisable, End of period	$2.17	'
Weighted Average Remaining Contractual Life (Years), Options exercisable	'6 years 8 months 4 days	'
Aggregate Intrinsic Value, Options exercisable, end of period	$17,519	'

Common_Stock_BlackScholesMerto

Common Stock - Black-Scholes-Merton Option-Pricing Model (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expected term (years)	'6 years 0 months 29 days	'6 years 0 months 29 days	'6 years 0 months 29 days
Volatility	'	55.00%	'
Dividend yield	0.00%	0.00%	0.00%
Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Volatility	46.00%	'	55.00%
Risk-free interest rate	0.70%	0.62%	0.97%
Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Volatility	55.00%	'	56.70%
Risk-free interest rate	1.75%	1.02%	2.25%

Common_Stock_Allocation_of_Sto

Common Stock - Allocation of Stock-Based Compensation Expense to Statements of Operations (Detail) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Employee stock-based compensation	$7,249	$2,097	$765
Cost of revenue [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Employee stock-based compensation	160	57	73
Research and development [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Employee stock-based compensation	2,348	745	338
Sales and marketing [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Employee stock-based compensation	2,165	656	229
General and administrative [Member]	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'
Employee stock-based compensation	$2,576	$639	$125

Net_Loss_Per_Share_Calculation

Net Loss Per Share - Calculation of Basic and Diluted Net Loss Per Share (Detail) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Earnings Per Share [Abstract]	'	'	'
Net loss	($40,732)	($16,601)	($15,885)
Weighted-average shares used to compute basic and diluted net loss per share	30,836	2,515	2,396
Basic and diluted net loss per share	($1.32)	($6.60)	($6.63)

Net_Loss_Per_Share_Securities_

Net Loss Per Share - Securities were excluded from Calculation of Diluted Net Loss Per Share (Detail)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Anti-dilutive securities were excluded from calculation of diluted net loss per share	12,958	45,120	39,353
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	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	12,958	10,213	4,446
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	1,010

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Loss Carryforwards [Line Items]	'	'	'	'
Unrecognized tax benefits, stock options	$100,000	'	'	'
Unrecognized tax benefits	6,626,000	1,444,000	1,212,000	899,000
Unrecognized tax benefits that would impact effective tax rate	0	'	'	'
Interest and penalties accrued on any unrecognized tax benefits	0	0	0	'
Undistributed earnings of foreign subsidiaries	200,000	'	'	'
Domestic Tax Authority [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Operating loss carryforwards	81,500,000	'	'	'
Domestic Tax Authority [Member] | Research Tax Credit Carryforward [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax credit carryforward	4,500,000	'	'	'
State and Local Jurisdiction [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Operating loss carryforwards	75,900,000	'	'	'
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] | California [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Tax credit carryforward	4,900,000	'	'	'
Valuation Allowance of Deferred Tax Assets [Member]	'	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'	'
Valuation allowance change	$4,900,000	$4,200,000	'	'

Income_Taxes_Income_before_Inc

Income Taxes - Income before Income Tax, Domestic and Foreign (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
United States	($39,068)	($16,725)	($15,939)
Foreign	-1,521	164	68
Loss before provision for income taxes	($40,589)	($16,561)	($15,871)

Income_Taxes_Components_of_Inc

Income Taxes - Components of Income Tax Expense (Benefit) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current:	'	'	'
Federal	$0	$0	$0
State	20	6	1
Foreign	156	34	13
Total	176	40	14
Deferred:	'	'	'
Federal	0	0	0
State	0	0	0
Foreign	-33	0	0
Total	-33	0	0
Total provision	$143	$40	$14

Income_Taxes_Effective_Income_

Income Taxes - Effective Income Tax Rate Reconciliation (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]	'	'	'
Federal income tax at statutory rate	34.00%	34.00%	34.00%
State income tax, net of federal benefit	2.00%	5.20%	7.40%
Foreign taxes at less than statutory rate	-1.60%	0.10%	0.10%
Intercompany transactions	-21.40%	0.00%	0.00%
Nondeductible stock-based compensation	-2.90%	-3.00%	-1.40%
Nondeductible warrant fair value adjustment	-2.20%	-11.00%	0.70%
Other permanent differences	-0.40%	0.00%	-0.40%
Tax credits generated in current year	4.10%	0.00%	2.90%
Valuation allowance change	-12.00%	-25.50%	-43.30%
Total	-0.40%	-0.20%	0.00%

Income_Taxes_Components_of_Def

Income Taxes - Components of Deferred Tax Assets (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Income Tax Disclosure [Abstract]	'	'
Deferred revenue	$2,417	$206
Depreciation and amortization	-1,326	-241
Accrued expenses and reserves	4,319	1,485
Loss carryforwards	27,687	29,149
Tax credit carryforwards	5,870	3,462
Contribution carryforwards	1	1
Deferred tax assets, gross	38,968	34,062
Valuation allowance	-38,937	-34,062
Net deferred tax assets	$31	$0

Income_Taxes_Unrecognized_Tax_

Income Taxes - Unrecognized Tax Benefits (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]	'	'	'
Unrecognized tax benefits as of the beginning of the year	$1,444	$1,212	$899
Increase related to prior year tax provisions	202	0	0
Decrease related to prior year tax provisions	0	0	0
Increase related to current year tax provisions	4,980	232	313
Unrecognized tax benefits as of the end of the year	$6,626	$1,444	$1,212

Employee_Benefit_Plan_Addition

Employee Benefit Plan - Additional Information (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Compensation and Retirement Disclosure [Abstract]	'	'	'
Employer contribution in the defined contribution plan	$0	$0	$0

Concentration_Customers_With_1

Concentration - Customers With 10% or Greater of Total Accounts Receivable and Net Revenue (Detail)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Percentage of Revenue [Member] | Windstream [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	39.00%	45.00%	37.00%
Percentage of Revenue [Member] | Telephone and Data Systems, Inc. (TDS) [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	11.00%	'	'
Percentage of Accounts Receivable [Member] | Windstream [Member]	'	'	'
Concentration Risk [Line Items]	'	'	'
Concentration risk percentage	'	22.00%	'

Segment_Information_Additional

Segment Information - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2013
	Segment
Segment Reporting [Abstract]	'
Number of operating segment	1
Number of reporting segment	1

Segment_Information_Revenues_D

Segment Information - Revenues (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	$116,582	$95,872	$40,421
United States [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	106,341	91,078	40,017
Other [Member]	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'
Revenue	$10,241	$4,794	$404

Segment_Information_Property_a

Segment Information - Property and Equipment (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	$11,155	$6,485
United States [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	10,977	6,485
Other [Member]	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'
Property and equipment, net	$178	$0

Related_Parties_Details

Related Parties (Details)	12 Months Ended
	Dec. 31, 2013
Related Party Transactions [Abstract]	'
Ownership percentage by third party, greater than	10.00%