ADESTO TECHNOLOGIES (IOTS) 10-Q 10 Dec 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Dec. 07, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Trading Symbol	IOTS
Entity Registrant Name	ADESTO TECHNOLOGIES CORP
Entity Central Index Key	1,395,848
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		14,974,718

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 5,337	$ 5,972	[1]
Accounts receivable, net		4,510	1,994	[1]
Inventories		6,981	7,453	[1]
Prepaid expenses		520	239	[1]
Deferred tax asset, current		291	291	[1]
Other current assets		2,268	1,095	[1]
Total current assets		19,907	17,044	[1]
Property and equipment, net		987	1,725	[1]
Deferred tax assets, non-current		1,862	1,861	[1]
Intangible assets, net		9,868	10,795	[1]
Goodwill		22	22	[1]
Total assets		32,646	31,447	[1]
Current liabilities:
Revolving line of credit	[1]		4,273
Accounts payable		9,458	7,814	[1]
Income taxes payable		194	134	[1]
Accrued compensation and benefits		979	877	[1]
Accrued expenses and other current liabilities		1,932	1,334	[1]
Deferred tax liability, current		736	726	[1]
Term loan		5,042	6,476	[1]
Total current liabilities		18,341	21,634	[1]
Preferred stock warrant liability		463	122	[1]
Term loan		9,229
Deferred tax liability, non-current		1,453	1,453	[1]
Other liabilities, non-current	[1]		23
Total liabilities		$ 29,486	$ 23,232	[1]
Commitments and contingencies (See Note 7)				[1]
Convertible preferred stock:
Convertible preferred stock, no par value, 4,653,586 shares authorized as of September 30, 2015 and December 31, 2014; 4,419,853 shares issued and outstanding as of September 30, 2015 and December 31, 2014.		$ 78,467	$ 78,467	[1]
Stockholders' (deficit) equity
Common stock, $0.0001 par value, 14,696,969 and 6,666,666 shares authorized as of September 30, 2015 and December 31, 2014, respectively; 565,496 and 559,554 shares issued and outstanding as of September 30, 2015 and December 31, 2014, respectively		0	0	[1]
Additional paid-in capital		4,119	3,912	[1]
Accumulated other comprehensive income		(146)	(3)	[1]
Accumulated deficit		(79,280)	(74,161)	[1]
Total stockholders' deficit		(75,307)	(70,252)	[1]
Total liabilities, convertible preferred stock and stockholders' deficit		$ 32,646	$ 31,447	[1]
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014	[1]
Convertible preferred stock, par value	$ 0	$ 0
Convertible preferred stock, shares authorized	4,653,586	4,653,586
Convertible preferred stock, shares issued	4,419,853	4,419,853
Convertible preferred stock, shares outstanding	4,419,853	4,419,853
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	14,696,969	6,666,666
Common stock, shares issued	565,496	565,496
Common stock, shares outstanding	559,554	559,554
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue	$ 11,143	$ 10,034	$ 31,433	$ 31,096
Cost of revenue	6,110	6,333	18,346	19,367
Gross profit	5,033	3,701	13,087	11,729
Operating expenses:
Research and development	3,217	3,456	9,313	11,375
Sales and marketing	2,126	1,735	6,189	5,368
General and administrative	919	639	2,589	1,809
Total operating expenses	6,262	5,830	18,091	18,552
Loss from operations	(1,229)	(2,129)	(5,004)	(6,823)
Other income (expense):
Interest expense, net	(336)	(189)	(822)	(611)
Other income (expense), net	494	(38)	783	5
Total other income (expense), net	158	(227)	(39)	(606)
Loss before provision for income taxes	(1,071)	(2,356)	(5,043)	(7,429)
Provision for income taxes	5	15	76	125
Net loss attributable to common stockholders	$ (1,076)	$ (2,371)	$ (5,119)	$ (7,554)
Net loss per share attributable to common stockholders
Basic and diluted	$ (1.90)	$ (4.40)	$ (9.11)	$ (14.01)
Weighted average number of shares used in computing net loss per share attributable to common stockholders
Basic and diluted	564,896	539,397	562,110	539,285

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net loss	$ (1,076)	$ (2,371)	$ (5,119)	$ (7,554)
Other comprehensive income (loss) net of tax:
Foreign currency translation adjustment	45	(68)	(143)	114
Comprehensive loss, net of tax	$ (1,031)	$ (2,439)	$ (5,262)	$ (7,440)

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015		Sep. 30, 2014
Cash flows from operating activities:
Net loss	$ (5,119)		$ (7,554)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	197		204
Depreciation and amortization	1,173		1,364
Amortization of intangible assets	927		927
Amortization of debt discount	355		28
Deferred income taxes	9
Changes in fair value of preferred stock warrant liability	(522)		(38)
Changes in assets and liabilities:
Accounts receivable	(2,516)		2,928
Inventories	472		1,694
Prepaid expenses and other current assets	(1,521)		480
Accounts payable	1,644		(1,286)
Accrued compensation and benefits	102		(346)
Accrued expenses and other liabilities	633		267
Net cash used in operating activities	(4,166)		(1,332)
Cash flows from investing activities
Acquisition of property and equipment	(388)		(770)
Net cash used in investing activities	(388)		(770)
Cash flows from financing activities
Proceeds from issuance of common stock	10		1
Proceeds from term loan	14,903
Proceeds from revolving line of credit			2,734
Payments on revolving line of credit	(4,273)		(4,462)
Payments on term loan	(6,600)		(1,500)
Net cash provided by (used in) financing activities	4,040		(3,227)
Effect of exchange rates on cash and equivalents	(121)		67
Net decrease in cash and cash equivalents	(635)		(5,262)
Cash and cash equivalents - beginning of period	5,972	[1]	11,580
Cash and cash equivalents - end of period	5,337		6,318
Supplemental disclosures of other cash flow information:
Cash paid for interest expense	521		$ 579
Noncash investing and financing activities:
Issuance of preferred stock warrants in connection with term loan	$ 863
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Organization and Summary of Sig

Organization and Summary of Significant Accounting Policies.	9 Months Ended
	Sep. 30, 2015
Organization and Summary of Significant Accounting Policies.	Note 1. Organization and Summary of Significant Accounting Policies. Organization and Nature of Operations. Adesto Technologies Corporation (together with its subsidiaries; “Adesto”, “we”, “our”, “us” or the “Company”) was incorporated in the state of California in January 2006 and reincorporated in Delaware in October 2015. We are a leading provider of application-specific, feature-rich, ultra-low power non-volatile memory (“NVM”) products. Our corporate headquarters are located in Sunnyvale, California. On September 28, 2012, we purchased certain flash memory product assets from Atmel Corporation and our financial results include the operating results of those assets from the date of acquisition. The Company completed its initial public offering of common stock on October 30, 2015. The Company sold 5,192,184 shares, including 192,194 shares for the underwriters’ option to purchase additional shares. The shares were sold at an initial public offering price of $5.00 per share for net proceeds of $22.2 million to the Company, after deducting underwriting discounts and commissions and offering expenses. See Note 14, Subsequent Events for additional information. Basis of Presentation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP to complete annual financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary to present fairly the financial position of the Company and its results of operations and cash flows for the interim periods presented have been included. Operating results for the three and nine months ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015, for any other interim period or for any other future year. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date, but does not include all of the disclosures required by U.S. GAAP. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s final prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended, with the Securities and Exchange Commission (“SEC”) on October 27, 2015. There have been no significant changes in the Company’s accounting policies from those disclosed in its prospectus filed with SEC on October 27, 2015. Reverse Stock Split. On October 1, 2015, we effected a 1-for-33 reverse stock split of our common stock and convertible preferred stock (collectively, “Capital Stock”). On the effective date of the reverse stock split, (i) each 33 shares of outstanding Capital Stock were reduced to one share of Capital Stock; (ii) the number of shares of Capital Stock into which each outstanding warrant or option to purchase Capital Stock is exercisable were proportionately reduced on a 33-to-1 basis; (iii) the exercise price of each outstanding warrant or option to purchase Capital Stock were proportionately increased on a 1-to-33 basis; and (iv) each 33 shares of authorized Capital Stock were reduced to one share of Capital Stock. All of the share numbers, share prices, and exercise prices have been adjusted, on a retroactive basis, to reflect this 1-for-33 reverse stock split. The par value of the common stock and convertible preferred stock were not adjusted as a result of the reverse stock split. Use of Estimates. The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the reported amount of assets, liabilities, revenue and expenses and related disclosures of contingent assets and liabilities. On an on-going basis, we evaluate those estimates, including those related to allowances for doubtful accounts, reserves for sales, warranty accrual, inventory write-downs, valuation of long-lived assets, including property and equipment and identifiable intangible assets and goodwill, loss on purchase commitments, valuation of deferred taxes and contingencies. In addition, we use assumptions when employing the Black-Scholes option-pricing model to calculate the fair value of stock options granted and to estimate the carrying value of our convertible preferred stock warrant liability. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results could differ from these estimates. Revenue Recognition and Accounts Receivable Allowances. We recognize revenue from product sales when persuasive evidence of an arrangement exists, the selling price is fixed or determinable, transfer of title occurs, and the collectibility of the resulting receivable is reasonably assured. Generally, we meet product sale revenue recognition conditions upon shipment because, in most cases, title and risk of loss passes to the customer at that time. In addition, we estimate and record provisions for future returns and other charges against revenue at the time of shipment, consistent with the terms of sale. We sell products to distributors at the price listed in our distributor price book. At the time of sale, we record a sales reserve for ship from stock and debits (“SSDs”), stock rotation rights and any special programs approved by management. We offset the sales reserve against recorded revenues, producing the revenue amount reported in our condensed consolidated statements of operations. The market price for our products can differ significantly from the book price at which we sold the product to the distributor. When the market price of a particular distributor’s sales opportunity to their customers would result in low or negative margins for the distributor, as compared to our original book price, we negotiate SSDs with the distributor. Management analyzes our SSD history to develop current SSD rates that form the basis of the SSD revenue reserve recorded each period. We obtain the historical SSD rates from the distributor’s records and our internal records. We typically grant payment terms of between 30 and 60 days to our customers. Our customers generally pay within those terms. Distributors are invoiced for shipments at listed book price. When the distributors pay the invoice, they may claim debits for SSDs previously authorized by us when appropriate. Once claimed, we process the requests against prior authorizations and adjust reserves previously established for that customer. The revenue we record for sales to our distributors is net of estimated provisions for these programs. Determining net revenue requires significant judgments and estimates on our part. We base our estimates on historical experience rates, the levels of inventory held by our distributors, current trends and other related factors. Because of the inherent nature of estimates, there is a risk actual amounts may differ materially from our estimates. Our consolidated financial condition and operating results depend on our ability to make reliable estimates. We believe that such estimates are reasonable. We also monitor collectibility of accounts receivable primarily through review of our accounts receivable aging. When facts and circumstances indicate the collection of specific amounts or from specific customers is at risk, we assess the impact on amounts recorded for bad debts and, if necessary, record a charge in the period such determination is made. As of September 30, 2015 and December 31, 2014, there was no allowance for doubtful accounts. Concentration of Risk. Our products are primarily manufactured, assembled and tested by third-party foundries and other contractors in Asia and we are heavily dependent on a single foundry in Taiwan for the manufacture of wafers and a single contractor in the Philippines for assembly and testing of our products. We do not have long-term agreements with either of these suppliers. A significant disruption in the operations of either of these parties would adversely impact the production of our products for a substantial period of time, which could have a material adverse effect on our business, financial condition, operating results and cash flows. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents and accounts receivables. We place substantially all of our cash and cash equivalents on deposit with a reputable, high credit quality financial institution in the United States of America. We believe that the bank that holds substantially all of our cash and cash equivalents is financially sound and, accordingly, subject to minimal credit risk. Deposits held with the bank may exceed the amount of insurance provided on such deposits. We generally do not require collateral or other security in support of accounts receivable. We periodically review the need for an allowance for doubtful accounts by considering factors such as historical experience, credit quality, the age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay. As a result of our favorable collection experience and customer concentration, there was no allowance for doubtful accounts as of September 30, 2015 and December 31, 2014. Customer concentrations as a percentage of total revenue were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Customer A 13 % 26 % 14 % 23 % Customer B 12 % 11 % 10 % * Customer C * 12 % * 16 % Customer D 12 % * * * Customer E 11 % * * * * less than 10% Customer concentrations as a percentage of gross accounts receivable were as follows: September 30, December 31, 2015 2014 Customer A 14 % 20 % Customer B 16 % 15 % Customer C * 10 % Customer D 10 % * * less than 10% Recent Accounting Pronouncements. In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) No. 2014-15, Disclosure of Uncertainties About an Entity’s Ability to Continue as a Going Concern. The amendments require management to perform interim and annual assessments of an entity’s ability to continue as a going concern and provide guidance on determining when and how to disclose going concern uncertainties in the financial statements. ASU 2014-15 applies to all entities and is effective for annual and interim reporting periods ending after December 15, 2016, with early adoption permitted. We are currently evaluating the impact that this new guidance will have on our condensed consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09 that requires companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. It also requires enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. The guidance applies to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets, unless those contracts are within the scope of other standards. In July 2015, the FASB voted to defer the effective date of this guidance until January 1, 2018, with early adoption permitted beginning January 1, 2017. We are currently evaluating the impact of adopting this guidance on our condensed consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs”, which simplifies the presentation of debt issuance costs. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those years, with early adoption permitted. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory”, (“ASU 2015-11”), which affects reporting entities that measure inventory using first-in, first-out (FIFO) or average cost. Specifically, ASU 2015-11 requires that inventory be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. Subsequent measurement is unchanged for inventory measured using last-in, first-out (LIFO) or the retail inventory method. The amendments in this Update are effective for us on September 30, 2017, and early adoption is permitted. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements. In November 2015, the FASB issued ASU 2015-17, “Balance Sheet Classification of Deferred Taxes”. The new standard will require that all deferred tax assets and liabilities be classified as non-current. The new standard is effective for annual period beginning after December 15, 2017, though early adoption is permitted as of the beginning of an earlier interim or annual reporting period. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements.

Balance Sheet Components.

Balance Sheet Components.	9 Months Ended
	Sep. 30, 2015
Balance Sheet Components.	Note 2. Balance Sheet Components. Accounts Receivable, Net. Accounts receivable, net consisted of the following (in thousands): September 30, December 31, 2015 2014 Accounts receivable $ 9,500 $ 6,079 Allowance for SSD, price protection, right of return and other activities (4,990 ) (4,085 ) Total accounts receivable, net $ 4,510 $ 1,994 Inventories. Inventories consisted of the following (in thousands): September 30, December 31, 2015 2014 Raw materials $ 1,494 $ 728 Work-in-process 3,855 4,707 Finished goods 1,632 2,018 Total inventories $ 6,981 $ 7,453 For the three months ended September 30, 2015, we realized a benefit of $0.3 million from sales of inventory previously written down. For the three months ended September 30, 2014, we recorded inventory write-downs of $0.9 million. For the nine months ended September 30, 2015, we realized a benefit of $1.0 million from sales of inventory previously written down. For the nine months ended September 30, 2014, we recorded inventory write-downs of $3.6 million. Other current assets. Other current assets consisted of the following (in thousands): September 30, December 31, 2015 2014 Foreign research credit receivable $ 876 $ 947 Deferred initial public offering costs 1,270 — Other current assets 122 148 Total other current assets $ 2,268 $ 1,095 Property and Equipment, Net. Property and equipment, net consisted of the following (in thousands): September 30, December 31, 2015 2014 Machinery and equipment $ 6,467 $ 6,114 Furniture and fixtures 77 77 Leasehold improvements 141 146 Computer software 668 668 Construction in progress 40 — Property and equipment, at cost 7,393 7,005 Accumulated depreciation and amortization (6,406 ) (5,280 ) Property and equipment, net $ 987 $ 1,725 Depreciation and amortization expense of property and equipment for the three months and nine months ended September 30, 2015 was $0.3 million and $1.2 million, respectively. Depreciation and amortization expense of property and equipment for the three months and nine months ended September 30, 2014 was $0.5 million and $1.4 million, respectively. Accrued Expenses and Other Current Liabilities. Accrued expenses and other current liabilities consisted of the following (in thousands): September 30, December 31, 2015 2014 Accrual for losses on wafer purchase commitments $ 165 $ 583 Accrued sales commission payable 379 315 Deferred revenue 132 — Accrued manufacturing expenses 203 — Accrued interest payable 66 — Accrued professional services 370 — Current portion of capital leases 23 37 Other accrued liabilities 594 399 Total accrued expenses and other current liabilities $ 1,932 $ 1,334

Fair Value Measurements.

Fair Value Measurements.	9 Months Ended
	Sep. 30, 2015
Fair Value Measurements.	Note 3. Fair Value Measurements. Fair value is defined as the exchange price that would be received from selling an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. We measure financial assets and liabilities, which consist of convertible preferred stock warrant liability, at fair value at each reporting period using a fair value hierarchy which requires us to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. A financial instrument’s classification within the fair value hierarchy is based upon the lowest level of input that is significant to the fair value measurement. Three levels of inputs may be used to measure fair value: Level 1 Level 2 Level 3 Financial liabilities measured at fair value on a recurring basis were as follows: Fair Value Measurement at Reporting Date Using Quoted Prices in Active Markets Significant Significant (Level 3) Total (in thousands) As of September 30, 2015 Liabilities: Preferred stock warrant liability $ — $ — $ 463 $ 463 As of December 31, 2014 Liabilities: Preferred stock warrant liability $ — $ — $ 122 $ 122 As of December 31, 2014, we used the Black-Scholes option pricing model to determine the fair value of the warrants to purchase preferred stock (“preferred stock warrants”), including the consideration of underlying common stock price, a risk-free interest rate, expected term and expected volatility. Certain inputs used in the model are unobservable. The fair values could change significantly based on future market conditions. The following table presents quantitative information about the inputs used for our fair value measurements classified in Level 3 of the fair value hierarchy as of December 31, 2014: Year Ended December 31, 2014 Volatility 40 % Expected dividend yield — Risk-free rate 1.74 % Expected term (in years) 6 As of September 30, 2015, we valued our preferred stock warrants using the probability-weighted expected return method (“PWERM”) whereby the value of the various classes of securities are estimated based upon the analysis of future values for us assuming various possible future liquidity events such as an “IPO”, sale or merger. Share value is based upon the probability-weighted present value of expected future net cash flows, considering each of the possible future events, as well as the rights and preferences of each share class. The PWERM was selected due to our established nature, the prospect of a near term exit via an initial public offering (“IPO”) or sale, and our ability to reasonably forecast financial performance. First, we considered the most likely future liquidity event scenarios to be used in the PWERM analysis. Those scenarios were selected to be (i) an IPO completed on October 31, 2015, (ii) an IPO completed on January 31, 2016, (iii) a sale completed on March 31, 2016, (iv) an orderly liquidation completed on December 31, 2016. The probability applied to each scenario was estimated by the board of directors to be 60%, 20%, 10%, and 10%, respectively. Second, our future total equity values for the IPO scenarios were estimated using our prospective cash flows and the application of a next-twelve-month (“NTM”) revenue multiple of 1.8x and 1.9x based on a review of selected similar guideline public companies. Our future total equity values for the sale scenarios were estimated using our prospective cash flows and the application of a last-twelve-month (“LTM”) revenue multiple of 2.5x based on a review of selected similar M&A transactions. Our future total equity value for the orderly liquidation scenario was based upon an asset approach, where the value of our assets and liabilities were adjusted based on estimated salvage values in an orderly liquidation. For each scenario, the values of cash and debt were adjusted to expected balances as of the liquidity date for each scenario. Third, the future total equity value for each scenario was bifurcated to each class of security based upon their respective rights and preferences. Security classes included convertible preferred stock (by seniority), outstanding warrants to purchase convertible preferred stock, common stock, and outstanding options to purchase common stock. Under the IPO scenarios, the convertible preferred stock was assumed to automatically convert to common stock without receiving a liquidation preference. Under the sale scenarios, the convertible preferred stock was assumed to receive its respective liquidation preferences and then participate with the common stock on a pro rata basis on any remaining distributions with no cap on participation. The total distributions to common stock were aggregated under each scenario and divided by the total shares of common stock outstanding to determine the share value for the common stock at the subject liquidity date. Fourth, the concluded share values for the common stock for each scenario were then discounted to present value using a reasonable rate of return applicable to our prospective risks. The concluded discount rate of 23.6% was based on an application of the weighted average cost of capital (“WACC”) using the capital asset pricing method (“CAPM”). Lastly, we estimated the discount for lack of marketability (“DLOM”) to be applied to the shares of common stock. The DLOM reflects the lower value placed on securities that are not freely transferable, as compared to those that trade frequently in established markets. The DLOMs were estimated using the protective put method and ranged between 2% to 5%, depending on the scenario. In addition, in order to estimate warrant liabilities, preferred stock warrants were also valued using the above methodologies and assumptions. It should be noted that, prior to an IPO or sale, no future financing rounds are expected. The assumptions underlying these valuations represent management’s best estimates, which involve inherent uncertainties and the application of management judgment. As a result, if factors or expected outcomes change and we use significantly different assumptions or estimates, the valuation of our equity-based compensation could be materially different. The key subjective factors and assumptions used in our valuation of as of September 30, 2015 primarily consisted of: • the probability and timing of the various possible liquidity scenarios; • the estimate of prospective cash flows leading up to each liquidity scenario; • the selection of LTM and NTM revenue multiples based on a review of selected similar guideline public company and M&A transaction data; • the estimated rate of return using the WACC; and • the estimated DLOM. The following table sets forth a reconciliation the changes in fair value of preferred stock warrants during the nine months ended September 30, 2015 (in thousands): Balance as of December 31, 2014 $ 122 Issuance of preferred stock warrants 863 Change in fair value of preferred stock warrants (522 ) Balance as of September 30, 2015 $ 463 As of December 31, 2014 and September 30, 2015, we did not have any assets that are measured at fair value on a recurring basis.

Purchased Intangible Assets.

Purchased Intangible Assets.	9 Months Ended
	Sep. 30, 2015
Purchased Intangible Assets.	Note 4. Purchased Intangible Assets. In 2012, in connection with our purchase of the serial flash memory product line assets from Atmel Corporation, we recorded $16.4 million of intangible assets (see Note 13). Intangible assets were as follows (in thousands): September 30, 2015 Gross Carrying Accumulated Net Carrying Developed technology $ 4,282 $ 1,285 $ 2,997 Customer relationships 9,011 2,252 6,759 Customer backlog 2,779 2,779 — Non-compete agreement 282 170 112 Total intangible assets subject to amortization $ 16,354 $ 6,486 $ 9,868 December 31, 2014 Gross Carrying Accumulated Net Carrying Developed technology $ 4,282 $ 964 $ 3,318 Customer relationships 9,011 1,689 7,322 Customer backlog 2,779 2,779 — Non-compete agreement 282 127 155 Total intangible assets subject to amortization $ 16,354 $ 5,559 $ 10,795 We recorded amortization expense related to the acquisition-related intangible assets as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Operating expense category: Research and development $ 121 $ 121 $ 363 $ 363 Sales and marketing 188 188 564 564 Total $ 309 $ 309 $ 927 $ 927 The estimated future amortization expense of acquisition-related intangible assets to be charged to operating expense after September 30, 2015 is as follows (in thousands): Year Ended December 31, 2015 (remaining 3 months) $ 309 2016 1,236 2017 1,221 2018 1,179 2019 1,179 Thereafter 4,744 Total $ 9,868

Borrowings.

Borrowings.	9 Months Ended
	Sep. 30, 2015
Borrowings.	Note 5. Borrowings. Bridge Bank Loan. In October 2013, we entered into the Business Financing Agreement (the “BFA”) with Bridge Bank N.A. The agreement consisted of both a revolving credit facility under which we were permitted to borrow up to 80% of eligible accounts receivable but not to exceed $7.5 million and a term loan in the amount of $9.0 million. Interest on the revolving credit facility accrued at the bank’s prime rate, which under the BFA could not have been less than 3.25%, plus 1.25% while interest on the term loan accrues at the bank’s prime rate plus 3%. Under the term loan, we were required to make interest only payments through April 2014 and principal payments of $300,000 monthly thereafter plus interest. Borrowings under the BFA were secured by all of our assets and are subject to certain financial covenants, including maintaining minimum levels of EBITDA on a quarterly basis and a certain minimum asset coverage ratio based on the ratio of unrestricted cash plus certain accounts receivable to total outstanding under the BFA. In 2014, we were not in compliance with certain financial covenants under the BFA. As a result, in October 2014, we entered into the First Business Financing Modification Agreement (the “BFA Modification”) under which the covenant defaults were waived. The BFA Modification (i) increased the interest rate charged on the term loan from the bank’s prime rate plus 3% to the bank’s prime rate plus 4% and would have declined to the bank’s prime rate plus 3% upon the raising of additional equity of not less than $2.5 million, (ii) required us to continue to maintain certain minimum levels of EBITDA and asset coverage ratios, (iii) required us to maintain unrestricted cash of not less than $4.25 million until that point at which we either receive additional equity of not less than $5.0 million or maintain a debt service coverage ratio of not less than 1.00 to 1.00 (based on the ratio of EBITDA to current portion of total amounts outstanding under the BFA Modification plus period-to-date interest expense payments) for two consecutive quarters. Under the BFA the bank was paid a facility fee of $82,500 at closing. Under the BFA Modification, the bank was paid an additional facility fee of $50,000 and received a warrant to purchase 1,488 shares of our Series E convertible preferred stock. The facility fees and the value of the warrant, $0.1 million, were recorded as debt discount and have been amortized over the life of the agreement. Amortization of debt discount was immaterial during 2013 and $0.1 million in 2014. As of December 31, 2014, the remaining unamortized debt discount was $0.1 million. As of December 31, 2014 we were not in compliance with the financial covenants of the agreements and all amounts due under the agreement are shown as current on the consolidated balance sheets. Borrowings of $10.9 million under this facility were repaid in full in April 2015. Opus Bank Term Loan. In April 2015, we entered into a three-year $15.0 million credit agreement with Opus Bank, which replaced the BFA, as amended. The agreement provides for a senior secured term loan facility, in an aggregate principal amount of up to $15.0 million to be used for general corporate purposes including working capital, to repay certain indebtedness and for capital expenditures and other expenses. Interest will accrue on any outstanding borrowings at a rate equal to (a) the higher of (i) the prime rate (as publicly announced from time to time by the Wall Street Journal) and (ii) 3.25% plus (b) (i) 1.00% if our cash and cash equivalents are greater than 125% of the outstanding principal of our borrowings under the new term loan facility, or (ii) 2.00% if our cash and cash equivalents are less than or equal to 125% of such borrowings. Indebtedness we incur under this agreement is secured by substantially all of our assets and contains financial covenants requiring us to maintain a monthly asset coverage ratio of not less than 1.00 to 1.00 through September 30, 2015 and 1.10 to 1.00 thereafter, and quarterly adjusted EBITDA (measured on a trailing three-month basis) of $1 through March 31, 2016 and increasing to higher levels thereafter. The agreement contains customary affirmative and negative covenants, including covenants that limit or restrict our ability to, among other things, incur additional indebtedness, grant liens, make investments, repurchase stock, pay dividends, transfer assets, merge or consolidate and make acquisitions. As of September 30, 2015, we were not in compliance with all financial covenants and received from the bank a waiver for non-compliance and restrictions. As of September 30, 2015 we had borrowings of $15.0 million outstanding prior to accounting for debt discount. We may not draw additional funds under the new term loan facility and our borrowings mature on April 30, 2018. In connection with the new term loan facility, the bank received a warrant to purchase 31,897 shares of Series E convertible preferred stock. In addition, we paid financing costs of $0.1 million. The financing costs and the value of the warrant, $0.9 million, were recorded as debt discount and are being amortized over the life of the agreement. Amortization of debt discount was $0.2 million during the nine months ended September 30, 2015. As of September 30, 2015, the remaining unamortized debt discount was $0.7 million. Outstanding borrowings consisted of the following (in thousands): September 30, December 31, 2015 2014 Revolving line of credit $ — $ 4,273 Term loan, current 5,042 6,476 Term loan, non-current 9,229 — Total $ 14,271 $ 10,749 Future repayments on outstanding borrowings (excluding unamortized discount of $0.7 million as of September 30, 2015) are as follows (in thousands): Year ending December 31, 2015 (remaining 3 months) $ 1,000 2016 6,000 2017 6,000 2018 2,000 $ 15,000 Interest expense incurred for the three and nine months ended September 30, 2015 was $0.3 million and $0.8 million, respectively. Interest expense incurred for the three and nine months ended September 30, 2014 was $0.2 million and $0.6 million, respectively.

Segment Information.

Segment Information.	9 Months Ended
	Sep. 30, 2015
Segment Information.	Note 6. Segment Information. We operate in one business segment, application-specific, feature-rich, ultra-low power NVM products. Our chief decision-maker, the President and Chief Executive Officer, evaluates our performance based on company-wide consolidated results. Revenue is evaluated based on product category and by geographic region. Product revenue from customers is designated based on the geographic region to which the product is delivered. Revenue by geographic region was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 United States $ 2,332 $ 1,913 $ 6,313 $ 5,693 Rest of Americas 178 161 512 592 Europe 1,321 1,354 3,846 6,108 Asia Pacific 7,251 6,551 20,512 18,509 Rest of world 61 55 250 194 Total $ 11,143 $ 10,034 $ 31,433 $ 31,096 Long-lived assets are attributed to the geographic region were they are located. Long-lived assets by geographic region were as follows (in thousands): September 30, December 31, 2015 2014 United States $ 349 $ 620 Asia Pacific 638 1,105 Total property and equipment, net $ 987 $ 1,725

Commitments and Contingencies.

Commitments and Contingencies.	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies.	Note 7. Commitments and Contingencies. Operating Leases. Prior to entry into an extension in November 2015 (see Note 14), we leased facilities under non-cancellable lease agreements which expire in January 2016. Rent expense under operating leases for the three and nine months ended September 30, 2015 was $0.2 million and $0.6 million, respectively. Rent expense under operating leases for the three and nine months ended September 30, 2014 was $0.2 million and $0.5 million, respectively. Future minimum lease payments under operating leases for the remaining portion of 2015 and 2016 are $193,000 and $38,000, respectively. See Note 14 for information about our new headquarters lease. Capital Leases. We have entered into various lease agreements for equipment and software under capital leases with terms of between 24 to 48 months. The equipment and software under the leases are collateral for the lease obligations and are included within property, plant and equipment, net, on the consolidated balance sheets. Future minimum commitments for capital leases as of September 30, 2015 are as follows (in thousands): Payments due remainder of 2015 $ 9 Payments due in 2016 18 Total minimum lease payments 27 Less: Amounts representing interest (4 ) Present value of capital lease obligations and current portion of capital lease obligations $ 23 Obligations under capital leases are included in accrued expenses and other current liabilities in the condensed consolidated balance sheets. Equipment acquired under capital leases is included in property and equipment, net and consisted of the following (in thousands): September 30, December 31, 2015 2014 Computer software $ 108 $ 108 Office equipment 49 49 Machinery and equipment 44 44 Total 201 201 Accumulated depreciation and amortization (180 ) (114 ) Property and equipment, net $ 21 $ 87 Purchase Commitments. As of September 30, 2015 we had purchase commitments with our third-party foundries and other suppliers of $3.6 million due within one year. Litigation. Although we are not currently subject to any litigation, and no litigation is currently threatened against us, we may be subject to legal proceedings, claims and litigation, including intellectual property litigation, arising in the ordinary course of business. Such matters are subject to many uncertainties and outcomes and are not predictable with assurance. We accrue amounts that we believe are adequate to address any liabilities related to legal proceedings and other loss contingencies that we believe will result in a probable loss that is reasonably estimable. Indemnification . During the normal course of business, we may make certain indemnities, commitments and guarantees which may include intellectual property indemnities to certain of our customers in connection with the sales of our products and indemnities for liabilities associated with the infringement of other parties’ technology based upon our products. Our exposure under these indemnification provisions is generally limited to the total amount paid by a customer under the agreement. However, certain agreements include indemnification provisions that could potentially expose us to losses in excess of the amount received under the agreement. In addition, we indemnify our officers, directors and certain key employees while they are serving in good faith in such capacities. We have not recorded any liability for these indemnities, commitments and guarantees in the accompanying consolidated balance sheets. Where necessary, we accrue for losses for any known contingent liabilities, including those that may arise from indemnification provisions, when future payment is probable.

Convertible Preferred Stock and

Convertible Preferred Stock and Convertible Preferred Stock Warrants	9 Months Ended
	Sep. 30, 2015
Convertible Preferred Stock and Convertible Preferred Stock Warrants	Note 8. Convertible Preferred Stock and Convertible Preferred Stock Warrants Convertible Preferred Stock. We have authorized and issued Series A preferred stock (“Series A”), Series B preferred stock (“Series B”), Series C preferred stock (“Series C”), Series D preferred stock (“Series D”), Series D-1 preferred stock (“Series D-1”), and Series E preferred stock (“Series E”). Preferred stock consisted of the following: Shares Shares Issued Aggregate Carrying (in thousands, except shares) Series A 1,087,663 1,082,248 $ 12,000 $ 11,836 Series B 1,311,000 1,303,616 15,900 15,815 Series C 837,962 837,957 19,357 19,257 Series D 518,342 446,565 14,000 13,958 Series D-1 222,861 222,668 5,236 5,236 Series E 675,758 526,799 61,932 12,365 Total 4,653,586 4,419,853 $ 128,425 $ 78,467 Concurrent with the close of our initial public offering on October 30, 2015, all shares of convertible preferred stock were converted into 9,114,739 shares of common stock. Prior to the conversion to common stock, the preferred stock had the following terms: Dividends. Class of Shares Dividend Per Series A $ 0.88704 Series B $ 0.97581 Series C $ 1.84800 Series D $ 2.50800 Series D-1 $ 1.88100 Series E $ 1.88100 No dividends have been declared to date. Liquidation. Thereafter, any remaining assets available for distribution would be distributed on a pro rata basis to the holders of preferred stock (on an as converted basis) and common stock based on the number of shares of common stock held by each stockholder. If upon liquidation, our assets are not sufficient to permit payment of the full liquidation preference of the preferred stock, the assets will be distributed first to the holders of Series E on a pro rata basis based on the number of shares held by each Series E stockholder, then the Management Carve-out Payments, then to the Series D and Series D-1 together on a pro rata basis, and then sequentially to each of the Series C, Series B and series A on a pro rata basis until all assets have been distributed. Voting. Conversion. Each share of Series A, Series B, Series C, Series D and Series D-1 will automatically convert at the then-effective conversion rate into shares of common stock upon the closing of a firm commitment underwritten initial public offering pursuant to an effective registration statement under the Securities Act of 1933, with gross proceeds to us of not less than $20 million (“qualified IPO”), and each share of Series E will automatically convert on a 1-to-9.8841 basis in the event of a qualified IPO. In addition, each share of preferred stock will automatically convert at the then-effective conversion ratio into shares of common stock upon receipt by us of a written request for such conversion from the holders of (a) 90% of the Series E and (b) two-thirds of each other series of preferred stock. Preferred Stock Warrants. As of the dates below, outstanding preferred stock warrants and associated fair values are as follows (fair value in thousands): Class of Shares Number Shares September 30, December 31, Exercise Price Issuance Expiration Series B 7,378 — 6 $ 12.1968 2010 2017 Series D 71,769 — 60 $ 31.3500 2012-2013 2019 Series E 33,385 463 56 $ 23.5125 2014-2015 2022-2024 112,532 $ 463 $ 122 In connection with a capital lease financing in January 2008, we issued a warrant to purchase 5,411 shares of Series A at $11.088 per share. In January 2015, this warrant expired unexercised. In connection with a capital lease financing in February 2010, we issued a warrant to purchase 7,378 shares of Series B at $12.1968 per share. The warrants are exercisable any time at the option of the holder and expire at the earlier of February 2017, an initial public offering, or an acquisition. This warrant was initially valued at $57,000 and recorded as a liability. In connection with a term loan financing with Opus Bank, in September 2012 we issued a warrant to purchase 35,885 shares of Series D at a price per share of $31.35. In addition, in connection with a first amendment of the term loan financing with Opus Bank, on each of March 31, 2013 and June 30, 2013 we issued to Opus Bank a warrant to purchase 17,942 shares of Series D at a price per share of $31.35. The warrants were exercisable any time at the option of the holder and expire at the earlier of September 2019, an initial public offering, or an acquisition. The warrants were initially valued at $1.3 million and recorded as a liability. In connection with a BFA Modification agreement with Bridge Bank, in October 2014 we issued a warrant to purchase 1,488 shares of Series E at a price per share of $23.5125. The warrant was exercisable any time at the option of the holder and expires at the earlier of October 2024, an initial public offering, or an acquisition. The warrant was initially valued at $0.1 million and recorded as a liability. Concurrent with the close of our initial public offering on October 30, 2015, all preferred stock warrants were converted into warrants to purchase a total of 411,499 shares of common stock and accordingly, the liability was reclassified to additional paid-in capital. As of December 31, 2014 and September 30, 2015, the fair value of preferred stock warrants was $0.1 million and $0.5 million, respectively, and classified as long-term liabilities, as the warrants primarily expire in periods beyond one year from December 31, 2014. The warrants are subject to re-measurement at each balance sheet date with any change in fair value recognized as a component of other income (expense), net in our condensed consolidated statements of operations. During the nine months ended September 30, 2015 and 2014, we recorded income of $0.5 million and $38,000 respectively, for the change in fair value of these warrants. We will continue to adjust the liability for changes in fair value until the earlier of the exercise or expiration of the warrants or the completion of a liquidation event, including the completion of a qualified initial public offering, at which time all preferred stock warrants will be converted into warrants to purchase common stock and, accordingly, the liability will be reclassified to additional paid-in capital.

Common Stock, Common Stock Warr

Common Stock, Common Stock Warrants and Stock Option Plan.	9 Months Ended
	Sep. 30, 2015
Common Stock, Common Stock Warrants and Stock Option Plan.	Note 9. Common Stock, Common Stock Warrants and Stock Option Plan. Common Stock. We were authorized to issue 6,666,666 shares of common stock with no par value per share as of December 31, 2014 and 14,696,969 shares of common stock with no par value per share as of September 30, 2015. Each holder of common stock is entitled to one vote per share. The holders of common stock are also entitled to receive dividends, when and if declared by our Board of Directors, subject to the consent of two-thirds of the outstanding preferred stock and their preferential dividend rights. Common Stock Reserved for Future Issuance. As of September 30, 2015 and December 31, 2014, we had reserved shares of common stock for future issuances as follows: September 30, December 31, 2015 2014 Preferred stock 9,114,739 9,114,739 Warrants to purchase preferred stock 411,499 86,046 Warrants to purchase common stock 218,618 218,618 Stock option plan: Options outstanding 796,147 604,412 Options available for future grants 1,814,420 148,633 Total 12,355,423 10,172,448 Common Stock Warrants. As of September 30, 2015 and December 31, 2014, outstanding common stock warrants were as follows: Total amount of securities issuable Exercise Price Issuance Date Expiration Date 114,784 $ 1.98 2009 2016 28,696 $ 1.98 2011 2016 75,138 $ 3.96 2011 2018 218,618 Common stock warrants are convertible at the option of the holder any time after the date of issuance into shares of our common stock. The aggregate amount of shares of common stock that would be issued is determined by dividing the exercisable price by the conversion price applicable on the date of conversion multiplied by the number of warrants exercised. When a public market exists for our common stock, the conversion price is equal to certain quoted prices for our common stock five trading days prior to the date of conversion. When no public market exists for our common stock, the fair value is determined by our Board of Directors. When a warrant is exercised in connection with our initial public offering, the conversion price is equal to the per share offering price to the public in the initial public offering. In connection with our initial public offering, on October 30, 2015, all common stock warrants were net exercised based on the initial public offering price of $5.00 per share, resulting in the issuance of 102,289 shares of our common stock. 2007 Equity Incentive Plan. In 2007, our Board of Directors and shareholders approved the 2007 Equity Incentive Plan (the “2007 Plan”) under which 272,727 shares of common stock were reserved and available for the issuance of stock options and restricted stock to eligible participants. The 2007 Plan has been subsequently amended to increase the number of shares of common stock reserved for issuance under the 2007 Plan to 787,878 and during the nine months ended September 30, 2015, the number of shares reserved for issuance under the 2007 Plan has been increased to 2,651,515. Options and restricted stock awards may be granted at a price per share not less than the 85% of the fair value at the date of grant or award, respectively. Restricted stock awarded to persons controlling more than 10% of our stock may be granted at a price per share not less than the 100% of the fair value at the date of the award. Options granted to new employees generally vest over a four-year period with 25% vesting at the end of one year and the remaining to vest monthly thereafter, while options granted to existing employees generally vest over a four-year period. Options granted generally are exercisable up to 10 years. A summary of stock option activity under the 2007 Plan is as follows: Stock Options Shares Weighted- Weighted- Aggregate (aggregate intrinsic value in thousands) Outstanding as of December 31, 2013 565,265 $ 3.60 5.9 $ — Granted 110,085 1.65 Exercised (20,398 ) 1.66 Canceled (50,540 ) 3.96 Outstanding as of December 31, 2014 604,412 $ 1.57 6.8 $ — Granted 201,185 5.15 Exercised (5,954 ) 1.73 Canceled (3,496 ) 1.74 Outstanding as of September 30, 2015 796,147 $ 2.18 6.8 $ 2,245 Options vested and expected to vest as of September 30, 2015 749,276 $ 2.41 6.6 $ 1,941 Options vested and exercisable as of September 30, 2015 500,483 $ 1.70 5.4 $ 1,652

Stock-based Compensation.

Stock-based Compensation.	9 Months Ended
	Sep. 30, 2015
Stock-based Compensation.	Note 10. Stock-based Compensation. We record stock-based compensation based on fair value as of the grant date using the Black-Scholes option-pricing model. We recognize such costs as compensation expense on a straight-line basis over the employee’s requisite service period, which is generally four years. Our valuation assumptions are as follows: Fair value of common stock. Risk-free interest rate. Expected term. Volatility. Dividend yield. The following table summarizes the weighted-average assumptions used in the Black-Scholes option-pricing model to determine fair value of stock options: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Volatility 40 % 65 % 40 % 65 % Expected dividend yield — — — — Risk-free rate 1.53 % 1.75 % 1.59 % 1.75 % Expected term (in years) 5.90 6.03 5.46 6.03 The following table presents the effects of stock-based compensation during the periods (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Cost of revenue $ 3 $ 1 $ 6 $ 3 Research and development 26 31 66 72 Sales and marketing 16 17 37 24 General and administrative 40 78 88 105 Total $ 85 $ 127 $ 197 $ 204 We did not realize any income tax benefit from stock option exercises in either of the periods presented due to recurring losses and valuation allowances. As of September 30, 2015, the total unrecognized compensation cost related to stock options, net of estimated forfeitures, was approximately $0.7 million, and this amount is expected to be recognized over a weighted-average period of approximately 2 years. Stock Option Repricing. In August 2014, our Board of Directors approved a common stock option repricing program whereby previously granted and unexercised options held by current employees with exercise prices above $1.65 per share were repriced on a one-for-one basis to $1.65 per share which represented the per share fair value of our common stock as of the date of the repricing. There was no other modification to the vesting schedule of the previously issued options. As a result, 387,749 unexercised options originally granted to purchase common stock at prices ranging from $1.98 to $5.61 per share were repriced under this program. We treated the repricing as a modification of the original awards and calculated additional compensation costs for the difference between the fair value of the modified award and the fair value of the original award on the modification date. The repricing resulted in incremental stock-based compensation expense of $0.2 million. Expense related to vested shares was expensed on the repricing date and expense related to unvested shares is being amortized over the remaining vesting period of such stock options.

Income Taxes.

Income Taxes.	9 Months Ended
	Sep. 30, 2015
Income Taxes.	Note 11. Income Taxes. We recorded an income tax provision of $5,000 and $76,000 for the three and nine months ended September 30, 2015, respectively, an income tax provision of $15,000 and $125,000 for the three and nine months ended September 30, 2014, respectively. The income tax provision is comprised of estimates of current taxes due in domestic and foreign jurisdictions. The income tax provision reflects tax expense associated with state income tax, foreign taxes, uncertain tax positions and tax expense related to the recording of a deferred tax liability that results from the amortization for income tax purposes of acquisition-related goodwill. The decrease in the tax provision between 2015 and 2014 is primarily due to a decrease in French subsidiary taxes for the both the three and nine month periods. As of September 30, 2015, our deferred tax assets are fully offset by a valuation allowance except in those jurisdictions where it is determined that a valuation allowance is not required. Accounting for income taxes (ASC 740), Income Taxes, provides for the recognition of deferred tax assets if realization of such assets is more likely than not. Based on the weight of available evidence, which includes historical operating performance, reported cumulative net losses since inception and difficulty in accurately forecasting our future results, we provided a full valuation allowance against our net U.S. deferred tax assets. We reassess the need for our valuation allowance on a quarterly basis. If it is later determined that a portion or all of the valuation allowance is not required, it generally will be a benefit to the income tax provision in the period that such determination is made. We evaluate tax positions for recognition using a more-likely-than-not recognition threshold, and those tax positions eligible for recognition are measured as the largest amount of tax benefit that is greater than 50% likely of being realized upon the effective settlement with a taxing authority that has full knowledge of all relevant information. We believe that we have provided adequate reserves for our income tax uncertainties in all open tax years. The Company does not anticipate a material change in the total amount or composition of its unrecognized tax benefits within the 12 months of September 30, 2015. We file tax returns in the United States for federal, California, and other states. All tax years remain open to examination for both federal and state purposes as a result of our net operating loss and credit carryforwards. We file foreign tax returns in the United Kingdom, France and China. These tax years remain open to examination.

Net Loss Per Share.

Net Loss Per Share.	9 Months Ended
	Sep. 30, 2015
Net Loss Per Share.	Note 12. Net Loss Per Share. The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders during the periods presented (in thousands, except share and per share data): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net loss attributable to common stockholders: Numerator: Basic and diluted: Net loss $ (1,076 ) $ (2,371 ) $ (5,119 ) $ (7,554 ) Denominator: Weighted average shares used in computing net loss per share attributable to common stockholders: Basic and diluted: 564,896 539,397 562,110 539,285 Net loss per share attributable to common stockholders: Basic and diluted: $ (1.90 ) $ (4.40 ) $ (9.11 ) $ (14.01 ) The following outstanding common stock equivalents were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been antidilutive: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Shares not used in computing net loss per share attributable to common stockholders as considered anti-dilutive: Preferred stock 9,114,739 9,114,739 9,114,739 9,114,739 Stock options 796,147 549,906 796,147 549,906 Preferred stock warrants 411,499 86,930 411,499 86,930 Common stock warrants 218,618 218,618 218,618 218,618

Purchase of Serial Flash Memory

Purchase of Serial Flash Memory Product Assets.	9 Months Ended
	Sep. 30, 2015
Purchase of Serial Flash Memory Product Assets.	Note 13. Purchase of Serial Flash Memory Product Assets. In September 2012, we completed the purchase of the serial flash memory product assets from Atmel Corporation. The aggregate purchase price for these assets was $25.0 million and was accounted for as a business combination. The excess of the purchase price over the fair value allocated to the net assets is goodwill. The key factors attributable to the creation of goodwill by the transaction are synergies in technology, operations, existing customer base and cash flow generated from revenue. The estimated fair value of finite-lived intangible assets and tangible assets were determined as follows (i) customer relationships and customer backlog were determined using the excess earnings approach, (ii) developed technology was determined using the royalty method, (iii) non-compete agreement was determined using the income approach, (iv) inventories were estimated using the cost approach and (v) property and equipment was estimated using replacement value. The following table summarizes the allocation of the purchase price to the tangible and intangible assets purchased as of the date of purchase (in thousands): Finite-lived intangible assets: Developed technology $ 4,282 Customer relationships 9,011 Customer backlog 2,779 Non-compete covenant 282 Total finite-lived intangible assets 16,354 Tangible assets: Inventory 8,365 Property and equipment 259 Total finite-lived intangible assets 8,624 Indefinite-lived intangible asset: Goodwill 22 $ 25,000

Subsequent Events.

Subsequent Events.	9 Months Ended
	Sep. 30, 2015
Subsequent Events.	Note 14. Subsequent Events. Reverse Stock Split On October 1, 2015, we effected a 1-for-33 reverse split of our common stock and convertible preferred stock. Reincorporation On October 9, 2015, we completed our reincorporation in Delaware. Initial Public Offering On October 30, 2015, subsequent to the close of the Company’s third quarter ended September 30, 2015, the Company completed its IPO of 5,192,184 shares common stock, at $5.00 per share, before underwriting discount and commissions. The shares sold included 192,184 shares issued as a result of the underwriters’ exercise of their option to purchase additional shares. The IPO generated net proceeds to the Company of approximately $22.2 million, after deducting underwriting discounts and commissions and offering expenses. Offering costs incurred by the Company were approximately $1.9 million and will be recorded against the proceeds received from the sale of the common stock. All outstanding shares of convertible preferred stock converted into 9,114,739 shares of the Company’s common stock concurrent with the close of the IPO on October 30, 2015. Following the IPO, there were no shares of the Company’s convertible preferred stock outstanding. Amendment of Certificate of Incorporation Upon the filing of our Certificate of Amendment to our Restated Certificate of Incorporation on October 23, 2015, the definition of “qualified IPO” was amended such that each share of Series A, Series B, Series C, Series D and Series D-1 will automatically convert at the then effective conversion rate into shares of common stock upon the closing of a firm commitment underwritten initial public offering pursuant to an effective registration statement under the Securities Act of 1933, with gross proceeds to us of not less than $20 million, and each share of Series E will automatically convert on a 1-to-9.8841 basis in the event of such qualified IPO. Amended and Restated Certificate of Incorporation Upon the filing of our Amended and Restated Certificate of Incorporation upon the closing of our on initial public offering on October 30, 2015, our authorized capital stock consisted of 100,000,000 shares of common stock, $0.0001 par value per share, and 5,000,000 shares of undesignated preferred stock, $0.0001 par value per share. Facility Leases On November 2, 2015, the Company extended the lease for its headquarters by six months to July 2016 by entering into that certain Amendment to Commercial Sublease, dated November 2, 2015, between the Company and eGain Corporation. The Amendment provides for a base rent during the extension period of $47,087 per month. Additionally, on November 2, 2015, the Company entered into a lease with Peterson Ridge LLC pursuant to which the Company has leased a new headquarters facility, consisting of an aggregate of approximately 34,000 square feet of space in Santa Clara, California. The initial term of the lease commenced on November 2, 2015 and is scheduled to end on July 31, 2023 and may be extended, at the Company’s option, for an additional five-year period following the initial lease term. Pursuant to the lease, monthly base rental payments due under the lease are expected to be approximately $93,000 per month between August 1, 2016 and February 27, 2017, with annual increases of approximately 3% thereafter. The Company must also pay for certain other operating costs under the lease, including operating expenses, taxes, assessments, insurance, utilities, securities and property management fees. Peterson Ridge LLC is obligated to reimburse the Company for up to $2,521,051 of the Company’s out-of-pocket costs associated with any tenant improvements, as defined in the lease.

Organization and Summary of S21

Organization and Summary of Significant Accounting Policies. (Policies)	9 Months Ended
	Sep. 30, 2015
Basis of Presentation	Basis of Presentation. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP to complete annual financial statements. In the opinion of management, all adjustments (consisting of normal recurring adjustments) considered necessary to present fairly the financial position of the Company and its results of operations and cash flows for the interim periods presented have been included. Operating results for the three and nine months ended September 30, 2015 are not necessarily indicative of the results that may be expected for the year ending December 31, 2015, for any other interim period or for any other future year. The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date, but does not include all of the disclosures required by U.S. GAAP. The accompanying condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s final prospectus filed pursuant to Rule 424(b) under the Securities Act of 1933, as amended, with the Securities and Exchange Commission (“SEC”) on October 27, 2015. There have been no significant changes in the Company’s accounting policies from those disclosed in its prospectus filed with SEC on October 27, 2015.
Reverse Stock Split.	Reverse Stock Split. On October 1, 2015, we effected a 1-for-33 reverse stock split of our common stock and convertible preferred stock (collectively, “Capital Stock”). On the effective date of the reverse stock split, (i) each 33 shares of outstanding Capital Stock were reduced to one share of Capital Stock; (ii) the number of shares of Capital Stock into which each outstanding warrant or option to purchase Capital Stock is exercisable were proportionately reduced on a 33-to-1 basis; (iii) the exercise price of each outstanding warrant or option to purchase Capital Stock were proportionately increased on a 1-to-33 basis; and (iv) each 33 shares of authorized Capital Stock were reduced to one share of Capital Stock. All of the share numbers, share prices, and exercise prices have been adjusted, on a retroactive basis, to reflect this 1-for-33 reverse stock split. The par value of the common stock and convertible preferred stock were not adjusted as a result of the reverse stock split.
Use of Estimates.	Use of Estimates. The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates, judgments and assumptions that affect the reported amount of assets, liabilities, revenue and expenses and related disclosures of contingent assets and liabilities. On an on-going basis, we evaluate those estimates, including those related to allowances for doubtful accounts, reserves for sales, warranty accrual, inventory write-downs, valuation of long-lived assets, including property and equipment and identifiable intangible assets and goodwill, loss on purchase commitments, valuation of deferred taxes and contingencies. In addition, we use assumptions when employing the Black-Scholes option-pricing model to calculate the fair value of stock options granted and to estimate the carrying value of our convertible preferred stock warrant liability. We base our estimates of the carrying value of certain assets and liabilities on historical experience and on various other assumptions that are believed to be reasonable under the circumstances, when these carrying values are not readily available from other sources. Actual results could differ from these estimates.
Revenue Recognition and Accounts Receivable Allowances	Revenue Recognition and Accounts Receivable Allowances. We recognize revenue from product sales when persuasive evidence of an arrangement exists, the selling price is fixed or determinable, transfer of title occurs, and the collectibility of the resulting receivable is reasonably assured. Generally, we meet product sale revenue recognition conditions upon shipment because, in most cases, title and risk of loss passes to the customer at that time. In addition, we estimate and record provisions for future returns and other charges against revenue at the time of shipment, consistent with the terms of sale. We sell products to distributors at the price listed in our distributor price book. At the time of sale, we record a sales reserve for ship from stock and debits (“SSDs”), stock rotation rights and any special programs approved by management. We offset the sales reserve against recorded revenues, producing the revenue amount reported in our condensed consolidated statements of operations. The market price for our products can differ significantly from the book price at which we sold the product to the distributor. When the market price of a particular distributor’s sales opportunity to their customers would result in low or negative margins for the distributor, as compared to our original book price, we negotiate SSDs with the distributor. Management analyzes our SSD history to develop current SSD rates that form the basis of the SSD revenue reserve recorded each period. We obtain the historical SSD rates from the distributor’s records and our internal records. We typically grant payment terms of between 30 and 60 days to our customers. Our customers generally pay within those terms. Distributors are invoiced for shipments at listed book price. When the distributors pay the invoice, they may claim debits for SSDs previously authorized by us when appropriate. Once claimed, we process the requests against prior authorizations and adjust reserves previously established for that customer. The revenue we record for sales to our distributors is net of estimated provisions for these programs. Determining net revenue requires significant judgments and estimates on our part. We base our estimates on historical experience rates, the levels of inventory held by our distributors, current trends and other related factors. Because of the inherent nature of estimates, there is a risk actual amounts may differ materially from our estimates. Our consolidated financial condition and operating results depend on our ability to make reliable estimates. We believe that such estimates are reasonable. We also monitor collectibility of accounts receivable primarily through review of our accounts receivable aging. When facts and circumstances indicate the collection of specific amounts or from specific customers is at risk, we assess the impact on amounts recorded for bad debts and, if necessary, record a charge in the period such determination is made. As of September 30, 2015 and December 31, 2014, there was no allowance for doubtful accounts.
Concentration of Risk.	Concentration of Risk. Our products are primarily manufactured, assembled and tested by third-party foundries and other contractors in Asia and we are heavily dependent on a single foundry in Taiwan for the manufacture of wafers and a single contractor in the Philippines for assembly and testing of our products. We do not have long-term agreements with either of these suppliers. A significant disruption in the operations of either of these parties would adversely impact the production of our products for a substantial period of time, which could have a material adverse effect on our business, financial condition, operating results and cash flows. Financial instruments that potentially subject us to significant concentrations of credit risk consist principally of cash and cash equivalents and accounts receivables. We place substantially all of our cash and cash equivalents on deposit with a reputable, high credit quality financial institution in the United States of America. We believe that the bank that holds substantially all of our cash and cash equivalents is financially sound and, accordingly, subject to minimal credit risk. Deposits held with the bank may exceed the amount of insurance provided on such deposits. We generally do not require collateral or other security in support of accounts receivable. We periodically review the need for an allowance for doubtful accounts by considering factors such as historical experience, credit quality, the age of the accounts receivable balances and current economic conditions that may affect a customer’s ability to pay. As a result of our favorable collection experience and customer concentration, there was no allowance for doubtful accounts as of September 30, 2015 and December 31, 2014. Customer concentrations as a percentage of total revenue were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Customer A 13 % 26 % 14 % 23 % Customer B 12 % 11 % 10 % * Customer C * 12 % * 16 % Customer D 12 % * * * Customer E 11 % * * * * less than 10% Customer concentrations as a percentage of gross accounts receivable were as follows: September 30, December 31, 2015 2014 Customer A 14 % 20 % Customer B 16 % 15 % Customer C * 10 % Customer D 10 % * * less than 10%
Recent Accounting Pronouncements.	Recent Accounting Pronouncements. In August 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (“ASU”) No. 2014-15, Disclosure of Uncertainties About an Entity’s Ability to Continue as a Going Concern. The amendments require management to perform interim and annual assessments of an entity’s ability to continue as a going concern and provide guidance on determining when and how to disclose going concern uncertainties in the financial statements. ASU 2014-15 applies to all entities and is effective for annual and interim reporting periods ending after December 15, 2016, with early adoption permitted. We are currently evaluating the impact that this new guidance will have on our condensed consolidated financial statements. In May 2014, the FASB issued ASU No. 2014-09 that requires companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. It also requires enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. The guidance applies to any entity that either enters into contracts with customers to transfer goods or services or enters into contracts for the transfer of nonfinancial assets, unless those contracts are within the scope of other standards. In July 2015, the FASB voted to defer the effective date of this guidance until January 1, 2018, with early adoption permitted beginning January 1, 2017. We are currently evaluating the impact of adopting this guidance on our condensed consolidated financial statements. In April 2015, the FASB issued ASU 2015-03, “Simplifying the Presentation of Debt Issuance Costs”, which simplifies the presentation of debt issuance costs. ASU 2015-03 is effective for annual reporting periods beginning after December 15, 2015 and interim periods within those years, with early adoption permitted. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330): Simplifying the Measurement of Inventory”, (“ASU 2015-11”), which affects reporting entities that measure inventory using first-in, first-out (FIFO) or average cost. Specifically, ASU 2015-11 requires that inventory be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling prices in the ordinary course of business, less reasonably predictable costs of completion, disposal, and transportation. Subsequent measurement is unchanged for inventory measured using last-in, first-out (LIFO) or the retail inventory method. The amendments in this Update are effective for us on September 30, 2017, and early adoption is permitted. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements. In November 2015, the FASB issued ASU 2015-17, “Balance Sheet Classification of Deferred Taxes”. The new standard will require that all deferred tax assets and liabilities be classified as non-current. The new standard is effective for annual period beginning after December 15, 2017, though early adoption is permitted as of the beginning of an earlier interim or annual reporting period. We are currently evaluating the impact of adoption this guidance on our condensed consolidated financial statements.

Organization and Summary of S22

Organization and Summary of Significant Accounting Policies. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Customer Concentration as Percentage of Total Revenue and Gross Receivable	Customer concentrations as a percentage of total revenue were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Customer A 13 % 26 % 14 % 23 % Customer B 12 % 11 % 10 % * Customer C * 12 % * 16 % Customer D 12 % * * * Customer E 11 % * * * * less than 10% Customer concentrations as a percentage of gross accounts receivable were as follows: September 30, December 31, 2015 2014 Customer A 14 % 20 % Customer B 16 % 15 % Customer C * 10 % Customer D 10 % * * less than 10%

Balance Sheet Components. (Tabl

Balance Sheet Components. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Accounts Receivable	Accounts receivable, net consisted of the following (in thousands): September 30, December 31, 2015 2014 Accounts receivable $ 9,500 $ 6,079 Allowance for SSD, price protection, right of return and other activities (4,990 ) (4,085 ) Total accounts receivable, net $ 4,510 $ 1,994
Schedule of Inventories	Inventories consisted of the following (in thousands): September 30, December 31, 2015 2014 Raw materials $ 1,494 $ 728 Work-in-process 3,855 4,707 Finished goods 1,632 2,018 Total inventories $ 6,981 $ 7,453
Schedule of Other Current Assets	Other current assets consisted of the following (in thousands): September 30, December 31, 2015 2014 Foreign research credit receivable $ 876 $ 947 Deferred initial public offering costs 1,270 — Other current assets 122 148 Total other current assets $ 2,268 $ 1,095
Property and Equipment	Property and equipment, net consisted of the following (in thousands): September 30, December 31, 2015 2014 Machinery and equipment $ 6,467 $ 6,114 Furniture and fixtures 77 77 Leasehold improvements 141 146 Computer software 668 668 Construction in progress 40 — Property and equipment, at cost 7,393 7,005 Accumulated depreciation and amortization (6,406 ) (5,280 ) Property and equipment, net $ 987 $ 1,725
Schedule of Accrued Expenses and Other Liabilities	Accrued Expenses and Other Current Liabilities. Accrued expenses and other current liabilities consisted of the following (in thousands): September 30, December 31, 2015 2014 Accrual for losses on wafer purchase commitments $ 165 $ 583 Accrued sales commission payable 379 315 Deferred revenue 132 — Accrued manufacturing expenses 203 — Accrued interest payable 66 — Accrued professional services 370 — Current portion of capital leases 23 37 Other accrued liabilities 594 399 Total accrued expenses and other current liabilities $ 1,932 $ 1,334

Fair Value Measurements. (Table

Fair Value Measurements. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedle of Fair Value, Liabilities Measured on Recurring Basis	Financial liabilities measured at fair value on a recurring basis were as follows: Fair Value Measurement at Reporting Date Using Quoted Prices in Active Markets Significant Significant (Level 3) Total (in thousands) As of September 30, 2015 Liabilities: Preferred stock warrant liability $ — $ — $ 463 $ 463 As of December 31, 2014 Liabilities: Preferred stock warrant liability $ — $ — $ 122 $ 122
Schedule of Quantitative Information about Inputs Used for Measurement	The following table presents quantitative information about the inputs used for our fair value measurements classified in Level 3 of the fair value hierarchy as of December 31, 2014: Year Ended December 31, 2014 Volatility 40 % Expected dividend yield — Risk-free rate 1.74 % Expected term (in years) 6
Schedule of Reconciliation of Change Fair Value	The following table sets forth a reconciliation the changes in fair value of preferred stock warrants during the nine months ended September 30, 2015 (in thousands): Balance as of December 31, 2014 $ 122 Issuance of preferred stock warrants 863 Change in fair value of preferred stock warrants (522 ) Balance as of September 30, 2015 $ 463

Purchased Intangible Assets. (T

Purchased Intangible Assets. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Intangible Assets	Intangible assets were as follows (in thousands): September 30, 2015 Gross Carrying Accumulated Net Carrying Developed technology $ 4,282 $ 1,285 $ 2,997 Customer relationships 9,011 2,252 6,759 Customer backlog 2,779 2,779 — Non-compete agreement 282 170 112 Total intangible assets subject to amortization $ 16,354 $ 6,486 $ 9,868 December 31, 2014 Gross Carrying Accumulated Net Carrying Developed technology $ 4,282 $ 964 $ 3,318 Customer relationships 9,011 1,689 7,322 Customer backlog 2,779 2,779 — Non-compete agreement 282 127 155 Total intangible assets subject to amortization $ 16,354 $ 5,559 $ 10,795
Schedule of Amortization Expense of Intangible Assets	We recorded amortization expense related to the acquisition-related intangible assets as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Operating expense category: Research and development $ 121 $ 121 $ 363 $ 363 Sales and marketing 188 188 564 564 Total $ 309 $ 309 $ 927 $ 927
Schedule of Finite-Lived Intangible Assets, Estimated Future Amortization Expense	The estimated future amortization expense of acquisition-related intangible assets to be charged to operating expense after September 30, 2015 is as follows (in thousands): Year Ended December 31, 2015 (remaining 3 months) $ 309 2016 1,236 2017 1,221 2018 1,179 2019 1,179 Thereafter 4,744 Total $ 9,868

Borrowings. (Tables)

Borrowings. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Outstanding Borrowings	Outstanding borrowings consisted of the following (in thousands): September 30, December 31, 2015 2014 Revolving line of credit $ — $ 4,273 Term loan, current 5,042 6,476 Term loan, non-current 9,229 — Total $ 14,271 $ 10,749
Schedule of Future Repayments Of Outstanding Borrowing	Future repayments on outstanding borrowings (excluding unamortized discount of $0.7 million as of September 30, 2015) are as follows (in thousands): Year ending December 31, 2015 (remaining 3 months) $ 1,000 2016 6,000 2017 6,000 2018 2,000 $ 15,000

Segment Information. (Tables)

Segment Information. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Product Revenue from Customers Based on Geographic Region	Product revenue from customers is designated based on the geographic region to which the product is delivered. Revenue by geographic region was as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 United States $ 2,332 $ 1,913 $ 6,313 $ 5,693 Rest of Americas 178 161 512 592 Europe 1,321 1,354 3,846 6,108 Asia Pacific 7,251 6,551 20,512 18,509 Rest of world 61 55 250 194 Total $ 11,143 $ 10,034 $ 31,433 $ 31,096
Schedule of Long-Lived Assets by Geographic Region	Long-lived assets are attributed to the geographic region were they are located. Long-lived assets by geographic region were as follows (in thousands): September 30, December 31, 2015 2014 United States $ 349 $ 620 Asia Pacific 638 1,105 Total property and equipment, net $ 987 $ 1,725

Commitments and Contingencies.

Commitments and Contingencies. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Future Minimum Commitments for Capital Leases	Future minimum commitments for capital leases as of September 30, 2015 are as follows (in thousands): Payments due remainder of 2015 $ 9 Payments due in 2016 18 Total minimum lease payments 27 Less: Amounts representing interest (4 ) Present value of capital lease obligations and current portion of capital lease obligations $ 23
Schedule of Capital Leased Assets	Equipment acquired under capital leases is included in property and equipment, net and consisted of the following (in thousands): September 30, December 31, 2015 2014 Computer software $ 108 $ 108 Office equipment 49 49 Machinery and equipment 44 44 Total 201 201 Accumulated depreciation and amortization (180 ) (114 ) Property and equipment, net $ 21 $ 87

Convertible Preferred Stock a29

Convertible Preferred Stock and Convertible Preferred Stock Warrants (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Convertible Preferred Stock	Preferred stock consisted of the following: Shares Shares Issued Aggregate Carrying (in thousands, except shares) Series A 1,087,663 1,082,248 $ 12,000 $ 11,836 Series B 1,311,000 1,303,616 15,900 15,815 Series C 837,962 837,957 19,357 19,257 Series D 518,342 446,565 14,000 13,958 Series D-1 222,861 222,668 5,236 5,236 Series E 675,758 526,799 61,932 12,365 Total 4,653,586 4,419,853 $ 128,425 $ 78,467
Schedule of Dividends	Holders of preferred stock are entitled to receive, pari passu but in preference to the common stockholders, when and as declared by our Board of Directors, but only out of funds that are legally available therefore, non-cumulative cash dividends at the annual rate of eight percent of the original issue price as follows: Class of Shares Dividend Per Series A $ 0.88704 Series B $ 0.97581 Series C $ 1.84800 Series D $ 2.50800 Series D-1 $ 1.88100 Series E $ 1.88100
Schedule of Preferred Stock Warrant	As of the dates below, outstanding preferred stock warrants and associated fair values are as follows (fair value in thousands): Class of Shares Number Shares September 30, December 31, Exercise Issuance Expiration Series B 7,378 — 6 $ 12.1968 2010 2017 Series D 71,769 — 60 $ 31.3500 2012-2013 2019 Series E 33,385 463 56 $ 23.5125 2014-2015 2022-2024 112,532 $ 463 $ 122

Common Stock, Common Stock Wa30

Common Stock, Common Stock Warrants and Stock Option Plan. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Stock Reserved for Future Issuance	As of September 30, 2015 and December 31, 2014, we had reserved shares of common stock for future issuances as follows: September 30, December 31, 2015 2014 Preferred stock 9,114,739 9,114,739 Warrants to purchase preferred stock 411,499 86,046 Warrants to purchase common stock 218,618 218,618 Stock option plan: Options outstanding 796,147 604,412 Options available for future grants 1,814,420 148,633 Total 12,355,423 10,172,448
Summary of Outstanding Common Stock Warrants	As of September 30, 2015 and December 31, 2014, outstanding common stock warrants were as follows: Total amount of securities issuable Exercise Price Issuance Date Expiration Date 114,784 $ 1.98 2009 2016 28,696 $ 1.98 2011 2016 75,138 $ 3.96 2011 2018 218,618
Summary of Stock Option Activity	A summary of stock option activity under the 2007 Plan is as follows: Stock Options Shares Weighted- Weighted- Aggregate (aggregate intrinsic value in thousands) Outstanding as of December 31, 2013 565,265 $ 3.60 5.9 $ — Granted 110,085 1.65 Exercised (20,398 ) 1.66 Canceled (50,540 ) 3.96 Outstanding as of December 31, 2014 604,412 $ 1.57 6.8 $ — Granted 201,185 5.15 Exercised (5,954 ) 1.73 Canceled (3,496 ) 1.74 Outstanding as of September 30, 2015 796,147 $ 2.18 6.8 $ 2,245 Options vested and expected to vest as of September 30, 2015 749,276 $ 2.41 6.6 $ 1,941 Options vested and exercisable as of September 30, 2015 500,483 $ 1.70 5.4 $ 1,652

Stock-based Compensation. (Tabl

Stock-based Compensation. (Tables)	9 Months Ended
	Sep. 30, 2015
Summary of Weighted Average Assumptions Used to Value Options	The following table summarizes the weighted-average assumptions used in the Black-Scholes option-pricing model to determine fair value of stock options: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Volatility 40 % 65 % 40 % 65 % Expected dividend yield — — — — Risk-free rate 1.53 % 1.75 % 1.59 % 1.75 % Expected term (in years) 5.90 6.03 5.46 6.03
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs	The following table presents the effects of stock-based compensation during the periods (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Cost of revenue $ 3 $ 1 $ 6 $ 3 Research and development 26 31 66 72 Sales and marketing 16 17 37 24 General and administrative 40 78 88 105 Total $ 85 $ 127 $ 197 $ 204

Net Loss Per Share. (Tables)

Net Loss Per Share. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Earnings Per Share, Basic and Diluted	The following table sets forth the computation of basic and diluted net loss per share attributable to common stockholders during the periods presented (in thousands, except share and per share data): Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Net loss attributable to common stockholders: Numerator: Basic and diluted: Net loss $ (1,076 ) $ (2,371 ) $ (5,119 ) $ (7,554 ) Denominator: Weighted average shares used in computing net loss per share attributable to common stockholders: Basic and diluted: 564,896 539,397 562,110 539,285 Net loss per share attributable to common stockholders: Basic and diluted: $ (1.90 ) $ (4.40 ) $ (9.11 ) $ (14.01 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following outstanding common stock equivalents were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been antidilutive: Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Shares not used in computing net loss per share attributable to common stockholders as considered anti-dilutive: Preferred stock 9,114,739 9,114,739 9,114,739 9,114,739 Stock options 796,147 549,906 796,147 549,906 Preferred stock warrants 411,499 86,930 411,499 86,930 Common stock warrants 218,618 218,618 218,618 218,618

Purchase of Serial Flash Memo33

Purchase of Serial Flash Memory Product Assets. (Tables)	9 Months Ended
	Sep. 30, 2015
Schedule of Summarized Purchase	The following table summarizes the allocation of the purchase price to the tangible and intangible assets purchased as of the date of purchase (in thousands): Finite-lived intangible assets: Developed technology $ 4,282 Customer relationships 9,011 Customer backlog 2,779 Non-compete covenant 282 Total finite-lived intangible assets 16,354 Tangible assets: Inventory 8,365 Property and equipment 259 Total finite-lived intangible assets 8,624 Indefinite-lived intangible asset: Goodwill 22 $ 25,000

Organization and Summary of S34

Organization and Summary of Significant Accounting Policies - Additional Information (Detail) $ / shares in Units, $ in Millions	Oct. 30, 2015USD ($)$ / sharesshares	Oct. 01, 2015	Oct. 30, 2015USD ($)$ / sharesshares	Sep. 30, 2015	Oct. 26, 2015$ / shares
Organization And Nature Of Operations [Line Items]
Date of Acquisition				Sep. 28, 2012
Subsequent Event [Member]
Organization And Nature Of Operations [Line Items]
Shares Issued, Price Per Share | $ / shares					$ 5
Reverse Stock Split		0.03030303
Reverse Stock Split		1-for-33 reverse stock split
Subsequent Event [Member] | IPO [Member]
Organization And Nature Of Operations [Line Items]
Stock Issued During Period, Shares, New Issues | shares	5,192,184		5,192,184
Shares Issued, Price Per Share | $ / shares	$ 5		$ 5
Proceeds from Issuance Initial Public Offering | $	$ 22.2		$ 22.2
Subsequent Event [Member] | Over-Allotment Option [Member]
Organization And Nature Of Operations [Line Items]
Stock Issued During Period, Shares, New Issues | shares	192,194

Organization and Summary of S35

Organization and Summary of Significant Accounting Policies - Concentrations Risk (Detail) - Customer Concentration Risk [Member]	3 Months Ended				9 Months Ended				12 Months Ended
	Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015		Sep. 30, 2014		Dec. 31, 2014
Sales Revenue, Net [Member] | Customer A [Member]
Concentration Risk [Line Items]
Concentration risk percentage	13.00%		26.00%		14.00%		23.00%
Sales Revenue, Net [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk percentage	12.00%		11.00%		10.00%		0.00%	[1]
Sales Revenue, Net [Member] | Customer C [Member]
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	[1]	12.00%		0.00%	[1]	16.00%
Sales Revenue, Net [Member] | Customer D [Member]
Concentration Risk [Line Items]
Concentration risk percentage	12.00%		0.00%	[1]	0.00%	[1]	0.00%	[1]
Sales Revenue, Net [Member] | Customer E [Member]
Concentration Risk [Line Items]
Concentration risk percentage	11.00%		0.00%	[1]	0.00%	[1]	0.00%	[1]
Accounts Receivable [Member] | Customer A [Member]
Concentration Risk [Line Items]
Concentration risk percentage					14.00%				20.00%
Accounts Receivable [Member] | Customer B [Member]
Concentration Risk [Line Items]
Concentration risk percentage					16.00%				15.00%
Accounts Receivable [Member] | Customer C [Member]
Concentration Risk [Line Items]
Concentration risk percentage					0.00%	[1]			10.00%
Accounts Receivable [Member] | Customer D [Member]
Concentration Risk [Line Items]
Concentration risk percentage					10.00%				0.00%	[2]
[1]	less than 10%
[2]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Balance Sheet Components - Comp

Balance Sheet Components - Components of Accounts Receivable, Net (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 9,500	$ 6,079
Allowance for SSD, price protection, right of return and other activities	(4,990)	(4,085)
Total accounts receivable, net	$ 4,510	$ 1,994	[1]
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Balance Sheet Components - Co37

Balance Sheet Components - Components of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Inventory [Line Items]
Raw materials	$ 1,494	$ 728
Work-in-process	3,855	4,707
Finished goods	1,632	2,018
Total inventories	$ 6,981	$ 7,453	[1]
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Balance Sheet Components - Addi

Balance Sheet Components - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Balance Sheet Components [Line Items]
Sale of inventory, benefit from previously written down	$ 0.3		$ 1
Inventory write-down		$ 0.9		$ 3.6
Depreciation and amortization	$ 0.3	$ 0.5	$ 1.2	$ 1.4

Balance Sheet Components - Co39

Balance Sheet Components - Components of Other Current Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Schedule Of Other Current Assets [Line Items]
Foreign research credit receivable	$ 876	$ 947
Deferred initial public offering costs	1,270
Other current assets	122	148
Total other current assets	$ 2,268	$ 1,095	[1]
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Balance Sheet Components - Co40

Balance Sheet Components - Components of Property and Equipment (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 7,393	$ 7,005
Accumulated depreciation and amortization	(6,406)	(5,280)
Property and equipment, net	987	1,725	[1]
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	6,467	6,114
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	77	77
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	141	146
Computer Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	668	$ 668
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, at cost	$ 40
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Balance Sheet Components - Co41

Balance Sheet Components - Components of Accrued Expenses and Other current Liabilities (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accrued Expenses And Other Current Liabilities [Line Items]
Accrual for losses on wafer purchase commitments	$ 165	$ 583
Accrued sales commission payable	379	315
Deferred revenue	132
Accrued manufacturing expenses	203
Accrued interest payable	66
Accrued professional services	370
Current portion of capital leases	23	37
Other accrued liabilities	594	399
Total accrued expenses and other current liabilities	$ 1,932	$ 1,334	[1]
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Fair Value Measurements - Finan

Fair Value Measurements - Financial Liabilities Measured at Fair Value (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Preferred stock warrant liability	$ 463	$ 122
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Preferred stock warrant liability	$ 463	$ 122

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information on Inputs used for Fair Value Measurements (Detail)	12 Months Ended
	Dec. 31, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Volatility	40.00%
Expected dividend yield	0.00%
Risk-free rate	1.74%
Expected term (in years)	6 years

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value measurements, description	First, we considered the most likely future liquidity event scenarios to be used in the PWERM analysis. Those scenarios were selected to be (i) an IPO completed on October 31, 2015, (ii) an IPO completed on January 31, 2016, (iii) a sale completed on March 31, 2016, (iv) an orderly liquidation completed on December 31, 2016. The probability applied to each scenario was estimated by the board of directors to be 60%, 20%, 10%, and 10%, respectively.
Fair value discount rate	23.60%
Minimum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value inputs, discount rate for lack of marketability	2.00%
Maximum [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value inputs, discount rate for lack of marketability	5.00%
IPO Scenario One [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value assumption, probability of ipo	60.00%
Transaction Date	Oct. 31, 2015
Fair value measurements, revenue multiple		1.8
IPO Scenario Two [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Fair value assumption, probability of ipo	20.00%
Transaction Date	Jan. 31, 2016
Fair value measurements, revenue multiple		1.9
Scenario 1 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Transaction Date	Mar. 31, 2016
Fair value assumption, probability of sale	10.00%
Fair value measurements, revenue multiple		2.5
Scenario 2 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Transaction Date	Dec. 31, 2016
Fair value assumption, probability of orderly liquidation	10.00%

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Reconciliation of Change Fair Value (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance as of December 31, 2014	$ 122
Issuance of preferred stock warrants	863
Change in fair value of preferred stock warrants	(522)
Balance as of September 30, 2015	$ 463

Purchased Intangible Assets - A

Purchased Intangible Assets - Additional Information (Detail) $ in Thousands	Sep. 30, 2012USD ($)
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets	$ 16,354

Purchased Intangible Assets - S

Purchased Intangible Assets - Schedule of Intangible Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 16,354	$ 16,354
Accumulated amortization	6,486	5,559
Net carrying amount	9,868	10,795	[1]
Developed Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	4,282	4,282
Accumulated amortization	1,285	964
Net carrying amount	2,997	3,318
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	9,011	9,011
Accumulated amortization	2,252	1,689
Net carrying amount	6,759	7,322
Customer Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,779	2,779
Accumulated amortization	2,779	2,779
Non-compete Covenant [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	282	282
Accumulated amortization	170	127
Net carrying amount	$ 112	$ 155
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Purchased Intangible Assets -48

Purchased Intangible Assets - Schedule of Amortization Expense of Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Amortization expense, acquisition related intangible assets	$ 309	$ 309	$ 927	$ 927
Research and Development [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense, acquisition related intangible assets	121	121	363	363
Selling and Marketing [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization expense, acquisition related intangible assets	$ 188	$ 188	$ 564	$ 564

Purchased Intangible Assets -49

Purchased Intangible Assets - Schedule of Finite-Lived Intangible Assets, Estimated Future Amortization Expense (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	[1]
Finite Lived Intangible Assets, Future Amortization Expense [Line Items]
2015 (remaining 3 months)	$ 309
2,016	1,236
2,017	1,221
2,018	1,179
2,019	1,179
Thereafter	4,744
Total	$ 9,868	$ 10,795
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Borrowings - Additional Informa

Borrowings - Additional Information (Detail) - USD ($)	1 Months Ended					3 Months Ended		9 Months Ended
	Apr. 30, 2015	Dec. 31, 2014	Oct. 30, 2014	Dec. 31, 2013	Oct. 31, 2013	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt Instrument [Line Items]
Unamortized debt discount						$ 700,000		$ 700,000
Amortization of debt discount								355,000	$ 28,000
Borrowing outstanding prior to accounting for debt discount						15,000,000		15,000,000
Interest expense						336,000	$ 189,000	$ 822,000	$ 611,000
Bridge Bank Loans [Member]
Debt Instrument [Line Items]
Debt instrument, covenant compliance								As of December 31, 2014 we were not in compliance with the financial covenants of the agreements and all amounts due under the agreement are shown as current on the consolidated balance sheets.
Repayment amount of borrowing capacity	$ 10,900,000
Bridge Bank Loans [Member] | BFA Modification [Member]
Debt Instrument [Line Items]
Debt instrument, modification description								(i) increases the interest rate charged on the term loan from the bank’s prime rate plus 3% to the bank’s prime rate plus 4% declining to the bank’s prime rate plus 3% upon the raising of additional equity of not less than $2.5 million, (ii) requires us to continue to maintain certain minimum levels of EBITDA and asset coverage ratios, (iii) requires us to maintain unrestricted cash of not less than $4.25 million until that point at which we either receive additional equity of not less than $5.0 million or maintain a debt service coverage ratio of not less than 1.00 to 1.00 (based on the ratio of EBITDA to current portion of total amounts outstanding under the BFA Modification plus period-to-date interest expense payments) for two consecutive quarters
Debt Instrument, Fee Amount				$ 82,500
Debt Instrument Additional Fee				50,000
Unamortized debt discount		$ 100,000		$ 100,000
Amortization of debt discount		$ 100,000
Bridge Bank Loans [Member] | Prime Rate [Member] | BFA Modification [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			4.00%
Bridge Bank Loans [Member] | Prime Rate [Member] | Upon the raising of additional equity of not less than $2.5 million [Member] | BFA Modification [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			3.00%
Bridge Bank Loans [Member] | Series E Preferred Stock [Member] | BFA Modification [Member]
Debt Instrument [Line Items]
Issuance of warrants to purchase preferred stock shares				1,488
Bridge Bank Loans [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 7,500,000
Debt instrument, prime rate, minimum					3.25%
Bridge Bank Loans [Member] | Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity as a percentage of eligible accounts receivable					80.00%
Bridge Bank Loans [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					1.25%
Bridge Bank Loans [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 9,000,000
Debt instrument, monthly payment, principal								$ 300,000
Bridge Bank Loans [Member] | Term Loan [Member] | Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate					3.00%
Opus Bank Term Loan [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	15,000,000
Unamortized debt discount	$ 900,000					700,000		700,000
Amortization of debt discount								$ 200,000
Debt instrument, agreement period								3 years
Debt instrument, description of variable rate basis								(a) the higher of (i) the prime rate (as publicly announced from time to time by the Wall Street Journal) and (ii) 3.25% plus (b) (i) 1.00% if our cash and cash equivalents are greater than 125% of the outstanding principal of our borrowings under the new term loan facility, or (ii) 2.00% if our cash and cash equivalents are less than or equal to 125% of such borrowings.
Debt instrument, variable rate	3.25%
Debt service coverage ratio through September 30, 2015	1
Debt service coverage ratio, thereafter	110.00%
Quarterly adjusted EBITDA	$ 1
Borrowing outstanding prior to accounting for debt discount						$ 15,000,000		$ 15,000,000
Borrowings mature date								Apr. 30, 2018
Payment for financing costs	$ 100,000
Opus Bank Term Loan [Member] | If our cash and cash equivalents are greater than 125% of the outstanding principal of our borrowings under the new term loan facility [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	1.00%
Opus Bank Term Loan [Member] | If our cash and cash equivalents are less than or equal to 125% of such borrowings [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	2.00%
Opus Bank Term Loan [Member] | Upon an occurrence of an event of default [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate	500.00%
Opus Bank Term Loan [Member] | Series E Preferred Stock [Member]
Debt Instrument [Line Items]
Issuance of warrants to purchase preferred stock shares	31,897

Schedule of Outstanding Borrowi

Schedule of Outstanding Borrowings (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Outstanding borrowings	$ 14,271	$ 10,749
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding borrowings		4,273
Term Loan, Current [Member]
Debt Instrument [Line Items]
Outstanding borrowings	5,042	$ 6,476
Term Loan, Non-current [Member]
Debt Instrument [Line Items]
Outstanding borrowings	$ 9,229

Schedule of Future Repayments O

Schedule of Future Repayments Of Outstanding Borrowing (Detail) $ in Thousands	Sep. 30, 2015USD ($)
Long Term Debt Maturities Repayments Of Principal [Line Items]
2015 (remaining 3 months)	$ 1,000
2,016	6,000
2,017	6,000
2,018	2,000
Borrowing outstanding prior to accounting for debt discount	$ 15,000

Segment Information - Additiona

Segment Information - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2015Segment
Segment Reporting Information [Line Items]
Number of operating segments	1

Segment Information - Schedule

Segment Information - Schedule of Revenue by Geographic Region (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 11,143	$ 10,034	$ 31,433	$ 31,096
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	2,332	1,913	6,313	5,693
Rest of Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	178	161	512	592
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,321	1,354	3,846	6,108
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	7,251	6,551	20,512	18,509
Rest of World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 61	$ 55	$ 250	$ 194

Segment Information - Long-Live

Segment Information - Long-Lived Assets by Geographic Region (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, Plant and Equipment, Net	$ 987	$ 1,725	[1]
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, Plant and Equipment, Net	349	620
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Property, Plant and Equipment, Net	$ 638	$ 1,105
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Commitment And Contingencies [Line Items]
Rent expense under operating leases	$ 200,000	$ 200,000	$ 600,000	$ 500,000
Rent expense under operating leases, remaining period	193,000		193,000
Rent expense under operating leases, next year	38,000		38,000
Supply Commitment [Member]
Commitment And Contingencies [Line Items]
Purchase commitments	$ 3,600,000		$ 3,600,000
Purchase commitments due period			1 year
Minimum [Member]
Commitment And Contingencies [Line Items]
Equipment and software under capital leases terms			24 months
Maximum [Member]
Commitment And Contingencies [Line Items]
Equipment and software under capital leases terms			48 months

Schedule of Future Minimum Comm

Schedule of Future Minimum Commitments for Capital Leases (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2015USD ($)
Schedule Of Capital Leases Future Minimum Payments Payable [Line Items]
Payments due remainder of 2015	$ 9
Payments due in 2016	18
Total minimum lease payments	27
Less: Amounts representing interest	(4)
Present value of capital lease obligations and current portion of capital lease obligations	$ 23

Schedule of Capital Leased Asse

Schedule of Capital Leased Assets (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Capital Leased Assets [Line Items]
Capital leased assets, gross	$ 201	$ 201
Accumulated depreciation and amortization	(180)	(114)
Property and equipment, net	21	87
Software Development [Member]
Capital Leased Assets [Line Items]
Capital leased assets, gross	108	108
Office Equipment [Member]
Capital Leased Assets [Line Items]
Capital leased assets, gross	49	49
Machinery and equipment [Member]
Capital Leased Assets [Line Items]
Capital leased assets, gross	$ 44	$ 44

Schedule of Convertible Preferr

Schedule of Convertible Preferred Stock (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	[1]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	4,653,586	4,653,586
Convertible preferred stock, shares issued	4,419,853	4,419,853
Convertible preferred stock, shares outstanding	4,419,853	4,419,853
Convertible preferred stock, aggregate liquidation value	$ 128,425
Convertible preferred stock, carrying Value	$ 78,467	$ 78,467
Series A Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	1,087,663
Convertible preferred stock, shares issued	1,082,248
Convertible preferred stock, shares outstanding	1,082,248
Convertible preferred stock, aggregate liquidation value	$ 12,000
Convertible preferred stock, carrying Value	$ 11,836
Series B Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	1,311,000
Convertible preferred stock, shares issued	1,303,616
Convertible preferred stock, shares outstanding	1,303,616
Convertible preferred stock, aggregate liquidation value	$ 15,900
Convertible preferred stock, carrying Value	$ 15,815
Series C Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	837,962
Convertible preferred stock, shares issued	837,957
Convertible preferred stock, shares outstanding	837,957
Convertible preferred stock, aggregate liquidation value	$ 19,357
Convertible preferred stock, carrying Value	$ 19,257
Series D Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	518,342
Convertible preferred stock, shares issued	446,565
Convertible preferred stock, shares outstanding	446,565
Convertible preferred stock, aggregate liquidation value	$ 14,000
Convertible preferred stock, carrying Value	$ 13,958
Series D-1 Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	222,861
Convertible preferred stock, shares issued	222,668
Convertible preferred stock, shares outstanding	222,668
Convertible preferred stock, aggregate liquidation value	$ 5,236
Convertible preferred stock, carrying Value	$ 5,236
Series E Convertible Preferred Stock [Member]
Convertible Preferred Stock [Line Items]
Convertible preferred stock, shares authorized	675,758
Convertible preferred stock, shares issued	526,799
Convertible preferred stock, shares outstanding	526,799
Convertible preferred stock, aggregate liquidation value	$ 61,932
Convertible preferred stock, carrying Value	$ 12,365
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Convertible Preferred Stock a60

Convertible Preferred Stock and Convertible Preferred Stock Warrants - Additional Information (Detail) - USD ($)

Oct. 30, 2015

Oct. 23, 2015

Oct. 30, 2015

Jan. 31, 2015

Oct. 31, 2014

Jun. 30, 2013

Mar. 31, 2013

Sep. 30, 2012

Feb. 28, 2010

Jan. 31, 2008

Sep. 30, 2015

Sep. 30, 2014

Dec. 31, 2014

Temporary Equity [Line Items]

Dividend as percent of original issue price

8.00%

Dividends declared

$ 0

Convertible preferred stock, dividend preference or restrictions

Holders of Series E are entitled to receive $70.5375 prior and in preference to other holders of preferred stock and the employees eligible to participate in the Management Carve-out Plan to be adopted by our Board of Directors upon a liquidation event. We have set aside an aggregate amount of up to 10% of the proceeds from the liquidation event for payments to such employees (the “Management Carve-out Payments”). The Management Carve-out Payments are made before any payments to the holders of Series D-1, Series D, Series C, Series B, Series A or common stock. After the Management Carve-out Payments holders of Series E are entitled to receive a second payment of $47.025 prior to the other holders of preferred stock and then the Series D-1 and Series D are entitled to receive their liquidation preference pari passu, followed by the Series C, the Series B and the Series A.

Aggregate amount set aside, percentage proceeds from liquidation event, for redemption restrictions

10.00%

Gain Loss On Change In Fair Value Of Warrant Liability

$ 500,000

$ 38,000

Other Noncurrent Liabilities [Member]

Temporary Equity [Line Items]

Fair values

500,000

$ 100,000

Series A Preferred Warrants [Member]

Temporary Equity [Line Items]

Warrants issued in connection with a capital lease financing

5,411

Exercise Price

$ 11.088

Class Of Warrants Or Right Expiration Date

2015-01

Class Of Warrant Or Right Exercised

Series B Preferred Warrants [Member]

Temporary Equity [Line Items]

Warrants issued in connection with a capital lease financing

7,378

Exercise Price

$ 12.1968

Class Of Warrants Or Right Expiration Date

2017-02

Fair values

$ 57,000

Series D Preferred Warrants [Member]

Temporary Equity [Line Items]

Warrants issued in connection with a capital lease financing

17,942

17,942

35,885

Exercise Price

$ 31.35

$ 31.35

$ 31.35

Class Of Warrants Or Right Expiration Date

2019-09

2019-09

Fair values

$ 1,300,000

$ 1,300,000

Series E Preferred Warrants [Member]

Temporary Equity [Line Items]

Warrants issued in connection with a capital lease financing

1,488

Exercise Price

$ 23.5125

Class Of Warrants Or Right Expiration Date

2024-10

Fair values

$ 100,000

Qualified Initial Public Offering [Member]

Temporary Equity [Line Items]

Proceeds from Issuance Initial Public Offering

$ 20,000,000

Convertible preferred stock, terms of conversion

In addition, each share of preferred stock will automatically convert at the then-effective conversion ratio into shares of common stock upon receipt by us of a written request for such conversion from the holders of (a) 90% of the Series E and (b) two-thirds of each other series of preferred stock.

Series A Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 11.088

Preferred stock, conversion basis

One-for-one

Series B Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 12.1968

Preferred stock, conversion basis

One-for-one

Series C Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 23.10

Preferred stock, conversion basis

One-for-one

Series D Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 31.35

Series D-1 Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 23.5125

Preferred stock, conversion basis

One-for-one

Series D-1 Convertible Preferred Stock [Member] | Management Carve-out Payments [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 47.025

Series E Convertible Preferred Stock [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 117.5625

Preferred stock, conversion basis

1-to-1.03

Series E Convertible Preferred Stock [Member] | Management Carve-out Payments [Member]

Temporary Equity [Line Items]

Convertible preferred stock, redemption price per share

$ 70.5375

Series E Preferred Stock [Member] | Qualified Initial Public Offering [Member]

Temporary Equity [Line Items]

Preferred stock, conversion basis

1-to-9.8841

Subsequent Event [Member]

Temporary Equity [Line Items]

Preferred stock warrants converted into warrants to purchase common stock

411,499

411,499

Subsequent Event [Member] | IPO [Member]

Temporary Equity [Line Items]

Common stock issued upon conversion of Convertible preferred stock

9,114,739

Proceeds from Issuance Initial Public Offering

$ 22,200,000

$ 22,200,000

Subsequent Event [Member] | Qualified Initial Public Offering [Member]

Temporary Equity [Line Items]

Proceeds from Issuance Initial Public Offering

$ 20,000,000

Subsequent Event [Member] | Series E Preferred Stock [Member] | Qualified Initial Public Offering [Member]

Temporary Equity [Line Items]

Preferred stock, conversion basis

1-to-9.8841

Schedule of Dividends Per Share

Schedule of Dividends Per Share (Detail)	9 Months Ended
	Sep. 30, 2015$ / shares
Series A Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	$ 0.88704
Series B Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	0.97581
Series C Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	1.84800
Series D Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	2.50800
Series D-1 Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	1.88100
Series E Convertible Preferred Stock [Member]
Dividends Payable [Line Items]
Dividend Per Share	$ 1.88100

Summary of Outstanding Preferre

Summary of Outstanding Preferred Stock Warrants and Associated Fair Values (Detail) - Preferred Stock Warrants [Member] - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Number of shares	112,532
Fair values	$ 463	$ 122
Series B Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Number of shares	7,378
Fair values		6
Exercise Price	$ 12.1968
Issuance Date	2,010
Expiration Date Expiration Date	2,017
Series D Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Number of shares	71,769
Fair values		60
Exercise Price	$ 31.3500
Expiration Date Expiration Date	2,019
Series E Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Number of shares	33,385
Fair values	$ 463	$ 56
Exercise Price	$ 23.5125
Minimum [Member] | Series B Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Expiration Date Expiration Date	2,017
Minimum [Member] | Series D Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Issuance Date	2,012
Expiration Date Expiration Date	2,019
Minimum [Member] | Series E Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Issuance Date	2,014
Expiration Date Expiration Date	2,022
Maximum [Member] | Series D Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Issuance Date	2,013
Maximum [Member] | Series E Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Issuance Date	2,015
Expiration Date Expiration Date	2,024

Common Stock, Common Stock Wa63

Common Stock, Common Stock Warrants and Stock Option Plan - Additional Information (Detail) - $ / shares	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2007	Oct. 26, 2015	Dec. 31, 2014
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Common stock, shares authorized	14,696,969			6,666,666	[1]
Common stock, no par value
Voting right common stock holder	Each holder of common stock is entitled to one vote per share
Common stock shares issued	565,496			565,496	[1]
Subsequent Event [Member]
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Initial public offering price per share			$ 5
Common stock shares issued			102,289
2007 Plan [Member]
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Shares of common stock reserved and available for the issuance of stock options and restricted stock to eligible participants		272,727
Shares of common stock reserved and available for the issuance of stock options and restricted stock to eligible participants	2,651,515	787,878
Vesting period	4 years
Option Exercisable Period After Grant Date	10 years
2007 Plan [Member] | New Employee [Member]
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Vesting period	4 years
Percentage Of Performance Based Awards Allowed To Vest Within Year	25.00%
2007 Plan [Member] | Minimum [Member]
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Share Based Compensation Arrangement By Share Based Payment Grants As Percentage Of Fair Value	85.00%
2007 Plan [Member] | Restricted Stock [Member] | Minimum [Member] | Persons controlling more than 10% of Company's stock [Member]
Common Stock Options Restricted Stock Warrants And Changes In Capitalization [Line Items]
Share Based Compensation Arrangement By Share Based Payment Grants As Percentage Of Fair Value	100.00%
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Schedule of Stock Reserved for

Schedule of Stock Reserved for Future Issuance (Detail) - shares	Sep. 30, 2015	Dec. 31, 2014
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	12,355,423	10,172,448
Preferred Stock [Member]
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	9,114,739	9,114,739
Warrants To Purchase Preferred Stock [Member]
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	411,499	86,046
Warrants To Purchase Common Stock [Member]
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	218,618	218,618
Stock Options Outstanding [Member]
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	796,147	604,412
Stock Options Available For Future Grants [Member]
Common Stock And Warrant Liability [Line Items]
Common stock, capital shares reserved for future issuance	1,814,420	148,633

Outstanding Common Stock Warran

Outstanding Common Stock Warrants (Detail)	9 Months Ended
	Sep. 30, 2015$ / sharesshares
Common Stock Warrants One [Member]
Class of Warrant or Right [Line Items]
Total amount of securities issuable under the outstanding warrants	114,784
Exercise Price | $ / shares	$ 1.98
Issuance Date	2,009
Expiration Date	2,016
Common Stock Warrants Two [Member]
Class of Warrant or Right [Line Items]
Total amount of securities issuable under the outstanding warrants	28,696
Exercise Price | $ / shares	$ 1.98
Issuance Date	2,011
Expiration Date	2,016
Common Stock Warrants Three [Member]
Class of Warrant or Right [Line Items]
Total amount of securities issuable under the outstanding warrants	75,138
Exercise Price | $ / shares	$ 3.96
Issuance Date	2,011
Expiration Date	2,018
Common Stock Warrant [Member]
Class of Warrant or Right [Line Items]
Total amount of securities issuable under the outstanding warrants	218,618

Summary of Stock Option Activit

Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Shares
Outstanding, beginning of period	604,412	565,265
Granted	201,185	110,085
Exercised	(5,954)	(20,398)
Canceled	(3,496)	(50,540)
Outstanding, end of period	796,147	604,412	565,265
Options vested and expected to vest, end of period	749,276
Options vested and exercisable, end of period	500,483
Weighted Average Exercise Price
Outstanding, beginning of period	$ 1.57	$ 3.60
Granted	5.15	1.65
Exercised	1.73	1.66
Canceled	1.74	3.96
Outstanding, end of period	2.18	$ 1.57	$ 3.60
Options vested and expected to vest, end of period	2.41
Options vested and exercisable, end of period	$ 1.70
Weighted Average Remaining Contractual Term (years)
Weighted Average Remaining Contractual Term	6 years 9 months 18 days	6 years 9 months 18 days	5 years 10 months 24 days
Options vested and expected to vest	6 years 7 months 6 days
Options vested and exercisable	5 years 4 months 24 days
Aggregate Intrinsic Value
Outstanding, end of period	$ 2,245
Options vested and expected to vest, end of period	1,941
Options vested and exercisable, end of period	$ 1,652

Stock-based Compensation - Addi

Stock-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2015	Aug. 30, 2014
Share Based Compensation Expense [Line Items]
Employee's requisite service period	4 years
Expected dividend yield	$ 0
Unrecognized compensation cost	$ 700
Expected to be recognized over a weighted-average period	2 years
Stock Option Repricing [Member]
Share Based Compensation Expense [Line Items]
Unexercised options held by current employees with exercise prices		$ 1.65
Stock conversion basis	One-for-one
Unexercised options		387,749
Incremental stock-based compensation expense	$ 200
Minimum [Member] | Stock Option Repricing [Member]
Share Based Compensation Expense [Line Items]
Unexercised options granted to purchase common stock at prices		$ 1.98
Maximum [Member] | Stock Option Repricing [Member]
Share Based Compensation Expense [Line Items]
Unexercised options granted to purchase common stock at prices		$ 5.61

Summary of Weighted Average Ass

Summary of Weighted Average Assumptions Used to Value Options (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Volatility	40.00%	65.00%	40.00%	65.00%
Expected dividend yield	0.00%
Risk-free rate	1.53%	1.75%	1.59%	1.75%
Expected term (in years)	5 years 10 months 24 days	6 years 11 days	5 years 5 months 16 days	6 years 11 days

Schedule of Employee Service Sh

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Share Based Compensation Expense [Line Items]
Stock-based compensation expense	$ 85	$ 127	$ 197	$ 204
Cost of Revenue [Member]
Share Based Compensation Expense [Line Items]
Stock-based compensation expense	3	1	6	3
Research and Development [Member]
Share Based Compensation Expense [Line Items]
Stock-based compensation expense	26	31	66	72
Selling and Marketing [Member]
Share Based Compensation Expense [Line Items]
Stock-based compensation expense	16	17	37	24
General and Administrative [Member]
Share Based Compensation Expense [Line Items]
Stock-based compensation expense	$ 40	$ 78	$ 88	$ 105

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Tax [Line Items]
Provision for income taxes	$ 5	$ 15	$ 76	$ 125

Schedule of Computation of Basi

Schedule of Computation of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income Loss Per Common Share [Line Items]
Net loss	$ (1,076)	$ (2,371)	$ (5,119)	$ (7,554)
Weighted average shares used in computing net loss per share attributable to common stockholders:
Basic and diluted:	564,896	539,397	562,110	539,285
Net loss per share attributable to common stockholders:
Basic and diluted:	$ (1.90)	$ (4.40)	$ (9.11)	$ (14.01)

Schedule of Outstanding Common

Schedule of Outstanding Common Stock Equivalents Excluded From Computation of Diluted Net Loss Per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	796,147	549,906	796,147	549,906
Preferred Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	411,499	86,930	411,499	86,930
Common Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	218,618	218,618	218,618	218,618
Preferred Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9,114,739	9,114,739	9,114,739	9,114,739

Purchase of Serial Flash Memo73

Purchase of Serial Flash Memory Product Assets - Additional Information (Detail) $ in Thousands	Sep. 30, 2012USD ($)
Finite lived intangible assets, tangible assets and goodwill	$ 25,000

Summary of the Allocation of th

Summary of the Allocation of the Purchase Price to the Tangible and Intangible Purchased (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	[1]	Sep. 30, 2012
Finite-lived intangible assets				$ 16,354
Inventory				8,365
Property and equipment				259
Total tangible assets				8,624
Goodwill	$ 22	$ 22		22
Finite lived intangible assets, tangible assets and goodwill				25,000
Developed Technology [Member]
Finite-lived intangible assets				4,282
Customer Relationships [Member]
Finite-lived intangible assets				9,011
Customer Backlog [Member]
Finite-lived intangible assets				2,779
Non-compete Covenant [Member]
Finite-lived intangible assets				$ 282
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date

Subsequent Event Additional Inf

Subsequent Event Additional Information (Detail)	Nov. 02, 2015USD ($)ft²	Oct. 30, 2015USD ($)$ / sharesshares	Oct. 23, 2015USD ($)	Oct. 01, 2015	Oct. 30, 2015USD ($)$ / sharesshares	Sep. 30, 2015USD ($)$ / sharesshares	Dec. 31, 2014$ / sharesshares	[1]
Subsequent Event [Line Items]
Common stock, shares authorized | shares						14,696,969	6,666,666
Common stock, par value | $ / shares						$ 0.0001	$ 0.0001
Qualified Initial Public Offering [Member]
Subsequent Event [Line Items]
Net proceeds from IPO						$ 20,000,000
Qualified Initial Public Offering [Member] | Series E Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred stock, conversion basis						1-to-9.8841
Subsequent Event [Member]
Subsequent Event [Line Items]
Reverse split of common stock and convertible preferred stock				1-for-33 reverse stock split
Reverse split of common stock and convertible preferred stock, conversion ratio				0.03030303
Subsequent Event [Member] | IPO [Member]
Subsequent Event [Line Items]
Net proceeds from IPO		$ 22,200,000			$ 22,200,000
Number of shares of common stock sold | shares		5,192,184			5,192,184
Offerings price per share | $ / shares		$ 5			$ 5
Offering costs incurred recorded against proceeds received					$ 1,900,000
Common stock issued upon conversion of Convertible preferred stock | shares		9,114,739			9,114,739
Subsequent Event [Member] | Lease Agreements [Member]
Subsequent Event [Line Items]
Lease extension term	6 months
Base monthly rent during the extension period	$ 47,087
Additional area leased | ft²	34,000
Lease Expiration Date	Jul. 31, 2023
Optional Lease Extension Term	5 years
Base monthly rent during the extension period	$ 93,000
Annual increase of monthly rent after February 27, 2017	3.00%
Reimbursement for out-of-pocket costs associated with any tenant improvements	$ 2,521,051
Subsequent Event [Member] | Amended and Restated Certificate of Incorporation [Member] | IPO [Member]
Subsequent Event [Line Items]
Common stock, shares authorized | shares		100,000,000			100,000,000
Common stock, par value | $ / shares		$ 0.0001			$ 0.0001
Preferred stock, shares authorized | shares		5,000,000			5,000,000
Preferred stock, par or stated value Per Share | $ / shares		$ 0.0001			$ 0.0001
Subsequent Event [Member] | Qualified Initial Public Offering [Member]
Subsequent Event [Line Items]
Net proceeds from IPO			$ 20,000,000
Subsequent Event [Member] | Qualified Initial Public Offering [Member] | Series E Preferred Stock [Member]
Subsequent Event [Line Items]
Preferred stock, conversion basis			1-to-9.8841
[1]	The condensed consolidated balance sheet as of December 31, 2014 was derived from the audited consolidated financial statements as of that date