QuickLogic (QUIK) 10-Q 9 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 02, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	QUICKLOGIC CORPORATION
Entity Central Index Key	882,508
Current Fiscal Year End Date	--12-30
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		95,191,029

UNAUDITED CONDENSED CONSOLIDATE

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 24,219	$ 16,527
Accounts receivable, net of allowances for doubtful accounts of $0 and $0	1,226	925
Inventories	4,090	3,559
Other current assets	1,087	997
Total current assets	30,622	22,008
Property and equipment, net	1,688	2,375
Other assets	222	253
TOTAL ASSETS	32,532	24,636
Current liabilities:
Revolving line of credit	9,000	6,000
Trade payables	1,214	1,437
Accrued liabilities	2,218	1,653
Current portion of capital lease obligations	360	299
Total current liabilities	12,792	9,389
Long-term liabilities:
Capital lease obligations, less current portion	142	355
Other long-term liabilities	47	14
Total liabilities	12,981	9,758
Commitments and contingencies (see Note 12)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 200,000 authorized; 94,922 and 80,536 shares issued and outstanding as of September 30, 2018 and December 31, 2017, respectively	95	80
Additional paid-in capital	284,205	268,833
Accumulated deficit	(264,749)	(254,035)
Total stockholders' equity	19,551	14,878
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 32,532	$ 24,636

UNAUDITED CONDENSED CONSOLIDA_2

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current Assets:
Allowance for doubtful accounts	$ 0	$ 0
Stockholders' Equity:
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	94,922,000	80,536,000
Common stock, shares outstanding	94,922,000	80,536,000

UNAUDITED CONDENSED CONSOLIDA_3

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Income Statement [Abstract]
Revenue	$ 3,510	$ 2,972	$ 9,396	$ 9,168
Cost of revenue	1,767	1,706	4,734	5,149
Gross profit	1,743	1,266	4,662	4,019
Operating expenses:
Research and development	2,461	2,368	7,526	7,114
Selling, general and administrative	2,509	2,353	7,680	7,381
Total operating expenses	4,970	4,721	15,206	14,495
Loss from operations	(3,227)	(3,455)	(10,544)	(10,476)
Interest expense	(21)	(15)	(77)	(97)
Interest income and other (expense), net	17	(3)	26	(2)
Loss before income taxes	(3,231)	(3,473)	(10,595)	(10,575)
Provision for income taxes	29	77	119	147
Net loss	$ (3,260)	$ (3,550)	$ (10,714)	$ (10,722)
Net loss per share:
Basic and Diluted	$ (0.03)	$ (0.04)	$ (0.12)	$ (0.14)
Weighted average shares outstanding:
Basic and Diluted	94,725	80,125	87,040	76,267

UNAUDITED CONDENSED CONSOLIDA_4

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Cash flows from operating activities:
Net loss	$ (10,714)	$ (10,722)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	980	1,041
Stock-based compensation	1,427	1,060
Write-down of inventories	206	127
Write-off of equipment	5	10
Changes in operating assets and liabilities:
Accounts receivable	(301)	(815)
Inventories	(736)	(1,416)
Other assets	(59)	206
Trade payables	(232)	(509)
Accrued liabilities	562	211
Other long-term liabilities	33	(24)
Net cash used in operating activities	(8,829)	(10,831)
Cash flows from investing activities:
Capital expenditures for property and equipment	(112)	(146)
Net cash used in investing activities	(112)	(146)
Cash flows from financing activities:
Payment of capital lease obligations	(329)	(322)
Proceeds from line of credit	21,000	12,000
Payment of line of credit	(18,000)	(12,000)
Proceeds from issuance of common stock	15,859	17,316
Stock issuance costs	(1,638)	(1,771)
Taxes for net issuance of stock awards	(259)	(87)
Net cash provided by financing activities	16,633	15,136
Net increase in cash and cash equivalents	7,692	4,159
Cash and cash equivalents at beginning of period	16,527	14,870
Cash and cash equivalents at end of period	24,219	19,029
Supplemental schedule of non-cash investing and financing activities :
Capital lease obligation to finance capital expenditures	502	274
Purchase of equipment included in accounts payable	$ 9	$ 1

The Company and Basis of Presen

The Company and Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
The Company and Basis of Presentation	Note 1 — The Company and Basis of Presentation QuickLogic Corporation ("QuickLogic" or "the Company") was founded in 1988 and reincorporated in Delaware in 1999. The Company enables Original Equipment Manufacturers, or OEMs to maximize battery life for highly differentiated, immersive user experiences with Smartphone, Wearable, Hearable, Tablet and Internet-of-Things, or IoT devices. QuickLogic delivers these benefits through industry leading ultra-low power customer programmable System on Chip, or SoC semiconductor solutions, embedded software, and algorithm solutions for always-on voice and sensor processing, and enhanced visual experiences. The Company is a fabless semiconductor provider of comprehensive, flexible sensor processing solutions, ultra-low power display bridges, and ultra-low power Field Programmable Gate Arrays, or FPGAs. The accompanying interim condensed consolidated financial statements are unaudited. In the opinion of management, these statements have been prepared in accordance with United States generally accepted accounting principles, or U.S. GAAP, and include all adjustments, consisting only of normal recurring adjustments, necessary to provide a fair statement of results for the interim periods presented. The Company recommends that these interim condensed consolidated financial statements be read in conjunction with the Company's Form 10-K for the year ended December 31, 2017, which was filed with the Securities and Exchange Commission, or SEC, on March 9, 2018. Operating results for the three and nine-month periods ended September 30, 2018 are not necessarily indicative of the results that may be expected for the full year. QuickLogic's fiscal year ends on the Sunday closest to December 31 and the fiscal quarters each end on the Sunday closest to the end of each calendar quarter. QuickLogic's third fiscal quarters for 2018 and for 2017 ended on September 30, 2018 and October 1, 2017, respectively. Liquidity The Company has financed its operations and capital investments through sales of common stock, capital leases, and bank lines of credit. As of September 30, 2018, the Company's principal sources of liquidity consisted of cash and cash equivalents of $24.2 million and $9.0 million line of credit with Heritage Bank of Commerce (“Heritage Bank”). On September 28, 2018, the Company entered into a Loan and Security Agreement (the "Loan Agreement") with Heritage Bank. The Loan Agreement provided for, among other things, a revolving credit facility with aggregate commitments of $9,000,000 (the “Revolving Facility”). The maturity date for loans under the Revolving Facility is September 28, 2020. As of the date hereof, the Company has drawn down $9.0 million under this revolving facility. Loans under the Revolving Facility will bear interest at a rate equal to one half of one percentage point (0.50%) above the variable rate of interest, per annum, that appears in The Wall Street Journal from time to time, whether or not such announced rate is the lowest rate available from Heritage Bank. See Note 5 to Unaudited Condensed Consolidated Financial Statements for the details of the financial covenants. Company is in compliance with all loan covenants as of September 30, 2018. The Line of credit facility with Silicon Valley Bank, which matured on September 24, 2018 was fully paid off in July 2018. On May 29, 2018, the Company issued 13.5 million shares of common stock, $0.001 par value and warrants to purchases up to 5.4 million shares of common stock at a combined price of $1.15. The warrants are exercisable any time for a period of 60 months from the date of issuance on May 29, 2018, and are exercisable at a price of $1.38 per share. See Note 7 to the Unaudited Condensed Consolidated Financial Statements for more details. The Company received net proceeds of approximately $13.9 million, after deducting underwriting commissions and other offering-related expenses. The Company expects to use the net proceeds for working capital, to accelerate the development of next generation products and for general corporate purposes. The Company may also use a portion of the net proceeds to acquire and/or license technologies and acquire and/or invest in businesses when the opportunity arises; however, the Company currently has no commitments or agreements with respect to any such transactions. The shares were offered pursuant to a shelf registration statement filed on December 9, 2016 with the SEC, as amended on March 15, 2017, which was declared effective by the SEC on March 16, 2017, and as supplemented by a prospectus supplement dated May 25, 2018, which were filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended. The Company's liquidity is affected by many factors including, among others: the level of revenue and gross profit as a result of the cyclicality of the semiconductor industry; the conversion of design opportunities into revenue; market acceptance of existing and new products, including solutions based on its Sensor Processing platforms; fluctuations in revenue as a result of product end-of-life; fluctuations in revenue as a result of the stage in the product life cycle of its customers' products; costs of securing access to and availability of adequate manufacturing capacity; levels of inventories; wafer purchase commitments; customer credit terms; the amount and timing of research and development expenditures; the timing of new product introductions; production volumes; product quality; sales and marketing efforts; the value and liquidity of its investment portfolio; changes in operating assets and liabilities; the ability to obtain or renew debt financing and to remain in compliance with the terms of existing credit facilities; the ability to raise funds from the sale of equity in the Company; the issuance and exercise of stock options and participation in the Company's employee stock purchase plan; and other factors related to the uncertainties of the industry and global economics. The Company currently uses its cash to fund its capital expenditures and operations. Based on past operating performance and current annual operating plans, the Company believes that sales generated from its new product offerings, existing cash and cash equivalents, together with financial resources from its Revolving Facility with Heritage Bank and its ability to raise additional capital in the public capital markets will be sufficient to satisfy its operations and capital expenditures and provides sufficient working capital for the next twelve months from the date the unaudited condensed consolidated financial statements as of and for the three and nine-month period ended September 30, 2018. The Company cannot provide any assurance that it will be able to raise additional capital, if required, or that such capital will be available on terms acceptable to the Company. The inability of the Company to generate sufficient sales from its new product offerings and/or raise additional capital if needed could have a material adverse effect on the Company’s operations and financial condition, including its ability to maintain compliance with its lender’s financial covenants. Principles of Consolidation The consolidated financial statements include the accounts of QuickLogic and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated. Foreign Currency The functional currency of the Company's non-U.S. operations is the U.S. dollar. Accordingly, all monetary assets and liabilities of these foreign operations are translated into U.S. dollars at current period-end exchange rates and non-monetary assets and related elements of expense are translated using historical exchange rates. Income and expense elements are translated to U.S. dollars using the average exchange rates in effect during the period. Gains and losses from the foreign currency transactions of these subsidiaries are recorded as interest income and other expense, net in the unaudited condensed consolidated statements of operations. Uses of Estimates The preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities and the reported amounts of revenue and expenses during the period. Actual results could differ materially from those estimates, particularly in relation to revenue recognition, the allowance for doubtful accounts, sales returns, valuation of investments, valuation of long-lived assets including mask sets, valuation of inventories including identification of excess quantities, market value and obsolescence, measurement of stock-based compensation awards, accounting for income taxes and estimating accrued liabilities. Contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. Judgment is required to determine the Stand Alone Selling Price, or SSP, for each distinct performance obligation. The Company uses a range of amounts to estimate SSP when each of the products and services are sold separately and determines the discount to be allocated based on the relative SSP of the various products and services when products and services sold are bundled. In instances where SSP is not directly observable, such as when the Company does not sell the product or service separately, it determines the SSP using information that may include market conditions and other observable inputs. The Company typically has more than one SSP for individual products and services due to the stratification of those products and services by customers. In these instances, the Company may use information such as the size of the customer, customer tier, type of the technology used, customer demographics, geographic region and other factors in determining the SSP. Concentration of Risk The Company's accounts receivable are denominated in U.S. dollars and are derived primarily from sales to customers located in North America, Asia Pacific, and Europe. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. See Note 11 for information regarding concentrations associated with accounts receivable.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Note 2 — Significant Accounting Policies During the three and nine-month periods ended September 30, 2018, there were no changes in the Company's significant accounting policies from its disclosures in the Annual Report on Form 10-K for the year ended December 31, 2017. For a discussion of the significant accounting policies, please see the Annual Report on Form 10-K for the fiscal year ended December 31, 2017, filed with the SEC on March 9, 2018. Revenue Recognition The Company adopted Accounting Standards Update, or ASU, No. 2014-09, Revenue from Contracts with Customers Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company determines revenue recognition through the following steps: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, we satisfy a performance obligation The Company generates most of its revenue by supplying standard hardware products, which must be programmed before they can be used in an application. The Company also generates revenue from licensing their intellectual property or IP, software tools and royalty from licensing its technology. Product Revenue The Company recognizes hardware product revenue at the point of time when control of products is transferred to the customers. Intellectual Property and Software License Revenue The Company recognizes IP and Software License revenue at the point of time when the control of IP or software license has been transferred. Maintenance Revenue The Company recognizes revenue from maintenance ratably over the term of the underlying maintenance contract term. Renewals of maintenance contracts create new performance obligations that are satisfied over the term with the revenues recognized ratably over the term. Royalty Revenue The Company recognizes royalty revenue when the later of the following events occurs: a) The subsequent sale or usage occurs. b) The performance obligation to which some or all of the sales-based royalty has been allocated has been satisfied. Contracts with Multiple Performance Obligations Some of the IP and Software Licensing contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. We determine the standalone selling prices based on our overall pricing objectives, taking into consideration market conditions and other factors, including the value of our contracts, type of the customer, customer tier, type of the technology used, customer demographics, geographic locations, and other factors. Deferred Revenue When the Company receives consideration, or such consideration is unconditionally due, prior to transferring goods or services to the customer under the terms of a sales contract, the Company records deferred revenue, which represents a contract liability. The Company recognizes deferred revenue as net sales once control of goods and/or services have been transferred to the customer and all revenue recognition criteria have been met and any constraints have been resolved. Assets Recognized from Costs to Obtain a Contract with a Customer The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if it expects the benefit of those costs to be longer than one year. Practical expedients and exemptions (i) Taxes collected from customers and remitted to government authorities and that are related to the sales of the Company’s products are excluded from revenues. (ii) Sales commissions are expensed when incurred because the amortization period would have been one year or less. These costs are recorded in selling, general and administrative expense in the Condensed Consolidated Statements of Income. (iii) The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with original expected lengths of one year or less or (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for the services performed. New Accounting Pronouncements Recently adopted accounting pronouncements: In May 2014, the Financial Accounting Standards Board, or FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU No. 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU No. 2014-09 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. In applying this new guidance to contracts within its scope, an entity will: (1) identify the contract(s) with a customer, (2) identify the performance obligation in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. Additionally, this new guidance would require significantly expanded disclosures about revenue. The new standard allows for two transition methods: (i) a full retrospective method applied to each prior reporting period presented, or (ii) a modified retrospective method applied with the cumulative effect of adoption recognized on adoption. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. In March, April, May and December 2016, the FASB issued ASU Nos. 2016-08, 2016-10, 2016-12 and 2016-20, respectively, which provide supplemental guidance and clarification to ASU No. 2014-09. The Company adopted ASU No. 2014-09 and other supplementary guidance effective January 1, 2018 and applied the modified retrospective approach for the transition. After evaluation of the impact of the transition, the Company determined that this new standard has no impact on the revenues of the prior years and no adjustments are required to the Company's retained earnings as of January 1, 2018. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity transfers of assets other than inventory. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718). Recently issued accounting pronouncements not yet adopted: In February 2016, the FASB issued ASU No. 2016-02, Leases The FASB subsequently issued the following amendments to ASU No. 2016-02, which have the same effective date and transition date of January 1, 2019, and which we collectively refer to as the new leasing standards: • ASU No. 2018-10, Codification Improvements to Topic 842, Leases, • ASU No. 2018-11, Leases (Topic 842) Targeted improvements The Company is currently evaluating the impact of our pending adoption of the new leasing standards on the consolidated financial statements. In February 2018, FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income. In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740) In June 2018, the FASB issued ASU No. 2018-07 , Improvements to nonemployee share-based payment accounting . Currently, share-based payments to nonemployees are accounted for under Subtopic 505-50, which significantly differs from the guidance for share-based payments to employees under Topic 718. This ASU supersedes Subtopic 505-50 by expanding the scope of Topic 718 to include nonemployee awards and generally aligning the accounting for nonemployee awards with the accounting for employee awards. The Company is currently evaluating the impact of our pending adoption of the new standard on the consolidated financial statements. In August 2018 the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement Other new accounting pronouncements are disclosed on the Annual Report on Form 10-K for the fiscal year ended December 31, 2017 filed with the SEC on March 9, 2018.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Net Loss Per Share	Note 3 — Net Loss Per Share Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per share was computed using the weighted average number of common shares outstanding during the period plus potentially dilutive common shares outstanding during the period under the treasury stock method. In computing diluted net loss per share, the weighted average stock price for the period is used in determining the number of shares assumed to be purchased from the exercise of stock options and warrants. For the three and nine-month periods ended September 30, 2018 and October 1, 2017, 7.0 million and 7.2 million of common shares associated with equity awards and the estimated number of shares to be purchased under the current offering period of the 2009 Employee Stock Purchase Plan were outstanding, respectively. These shares were not included in the computation of diluted net loss per share as they were considered anti-dilutive due to the net losses the Company experienced during these periods. Warrants to purchase up to 5.4 million shares were issued in connection with May 29, 2018 stock offering were also not included in the diluted loss per share calculation of the third quarter and the nine months ended September 30, 2018 as they were also considered anti-dilutive due to the net loss the Company experienced during these periods.

Balance Sheet Components

Balance Sheet Components	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Balance Sheet Components	Note 4 — Balance Sheet Components The following table provides details relating to certain balance sheet line items as of September 30, 2018, and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Inventories: Work-in-process $ 3,092 $ 2,894 Finished goods 998 665 $ 4,090 $ 3,559 Other current assets: Prepaid expenses $ 853 $ 836 Other 234 161 $ 1,087 $ 997 Property and equipment: Equipment $ 10,700 $ 10,996 Software 2,788 3,139 Furniture and fixtures 42 46 Leasehold improvements 683 674 14,213 14,855 Less: Accumulated depreciation and amortization (12,525 ) (12,480 ) $ 1,688 $ 2,375 Accrued liabilities: Employee related accruals $ 1,541 $ 1,143 Other 677 510 $ 2,218 $ 1,653

Financing Obligations

Financing Obligations	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Financing Obligations	Note 5 — Financing Obligations The following table provides details relating to the Company’s financing obligations as of September 30, 2018 and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Debt and capital lease obligations: Revolving line of credit $ 9,000 $ 6,000 Capital leases 502 654 9,502 6,654 Less: Current portion of debt and capital lease obligations (9,360 ) (6,299 ) Long-term portion of debt and capital lease obligations $ 142 $ 355 Revolving Line of credit On September 28, 2018, the Company entered into a Loan Agreement with Heritage Bank. The Loan Agreement provided for, among other things, a Revolving Facility with aggregate commitments of $9,000,000. The maturity date for loans under the Revolving Facility is September 28, 2020. As of September 30, 2018, the Company has drawn down $9.0 million under the Revolving Facility. Loans under the Revolving Facility will bear interest at a rate equal to one half of one percentage point (0.50%) above the variable rate of interest, per annum, that appears in The Wall Street Journal from time to time, whether or not such announced rate is the lowest rate available from Heritage Bank. As of the third quarter ended September 30, 2018, the Company had $9.0 million of revolving debt outstanding with an interest rate of 5.75% per annum. The Line of credit facility with Silicon Valley Bank, which matured on September 24, 2018 was fully paid off in July 2018. Financial covenants of the Revolving Facility require the Company to (i) maintain at all times a balance of unrestricted cash in its pledged account not less than the principal amount of all advances owing to Heritage Bank and (ii) maintain at all times, but subject to periodic reporting as of the last day of each quarter, not less than nine months of Remaining Months Liquidity. For purposes of the Revolving Facility, “Remaining Months Liquidity” means (i) unrestriced cash maintained at Heritage Bank (including cash in the Company’s pledged account) minus the outstanding principal amount of the cash advances under the Revolving Facility, divided by (ii) average trailing three (3) month EBITDA. The Company is in compliance with all loan covenants as of September 30, 2018. Capital Leases In July 2018, the Company leased design software under a three-year capital lease at an imputed interest rate of 7.64% per annum. Terms of the agreement require the Company to make annual payments of approximately $64,000 through July 2020, for a total of $191,000. As of September 30, 2018, $115,000 was outstanding under the capital lease, $56,000 of which was classified as a current liability. In December 2017, the Company leased design software under a three-year capital lease at an imputed interest rate of 6.48% per annum. Terms of the agreement require the Company to make annual payments of approximately $52,000 through December 2019, for a total of $156,000. As of September 30, 2018, $95,000 was outstanding under the capital lease, $46,000 of which was classified as a current liability. In December 2017, the Company leased design software under a two-year capital lease at an imputed interest rate of 6.30% per annum. Terms of the agreement require the Company to make quarterly payments of approximately $34,000 through November 2019, for a total of $273,000. As of September 30, 2018, $163,000 was outstanding under the capital lease, $129,000 of which was classified as a current liability. In May 2017, the Company leased design software under a three-year capital lease at an imputed interest rate of 5.48% per annum. Terms of the agreement require the Company to make annual payments of approximately $92,000 through June 2019, for a total of $276,000. As of September 30, 2018, $87,000 was outstanding under the capital lease, all of which was classified as a current liability. In February 2017, the Company leased design software under a three-year capital lease at an imputed interest rate of 5.57% per annum. Terms of the agreement require the Company to make annual payments of approximately $44,000 through February 2019, for a total of $133,000. As of September 30, 2018, $42,000 was outstanding under the capital lease, all of which was classified as a current liability. In December 2015, the Company leased design software under a two-year capital lease at an imputed interest rate of 4.88% per annum. Terms of the agreement require the Company to make quarterly payments of approximately $23,000 through November 2017, for a total of $182,000. The lease was paid off in November 2017. In July 2015, the Company leased design software under a three-year capital lease at an imputed interest rate of 4.91% per annum. Terms of the agreement require the Company to make annual payments of approximately $67,000 through July 2017, for a total of $202,000. The lease was fully paid off in July 2017.

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 6 — Fair Value Measurements Money market funds classified within Level 2 because they are not actively traded, have been valued using quoted market prices or alternative pricing sources and models utilizing observable market inputs. The following table presents the Company's financial assets that are measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017, consistent with the fair value hierarchy provisions of the authoritative guidance (in thousands): September 30, 2018 December 31, 2017 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets: Money market funds (1) $ 5,753 $ 784 $ 4,969 $ — $ 15,635 $ 7,176 $ 8,459 $ — Total assets $ 5,753 $ 784 $ 4,969 $ — $ 15,635 $ 7,176 $ 8,459 $ — (1) Money market funds are included in cash and cash equivalents on the accompanying consolidated balance sheets as of September 30, 2018 and December 31, 2017.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Stockholders' Equity	Note 7 — Stockholders' Equity Common Stock and Preferred Stock As of September 30, 2018, the Company is authorized to issue 200 million shares of common stock and has 10 million shares of authorized but unissued shares of preferred stock. Without any further vote or action by the Company's stockholders, the Board of Directors has the authority to determine the powers, preferences, rights, qualifications, limitations or restrictions granted to or imposed upon any wholly unissued shares of undesignated preferred stock. On April 26, 2017, the Company filed an Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware to increase the number of authorized shares of common stock from 100 million to 200 million. The proposal for the amendment was approved by the Company’s stockholders at its 2017 Annual Meeting of Stockholders held on April 26, 2017. Issuance of Common Stock On December 6, 2016, the Company filed a shelf registration statement on Form S-3, as amended on March 15, 2017, under which the Company may, from time to time, sell securities in one or more offerings up to a total dollar amount of $40.0 million. The Company's shelf registration statement was declared effective on March 16, 2017. Under the shelf registration, on May 29, 2018, the Company issued an aggregate of 13.5 million shares of common stock, $0.001 par value and warrants to purchase up to an aggregate of 5.4 million shares of common stock in a confidentially marketed underwritten offering. The common stock and warrants were issued in units (the “Units”), with each Unit consisting of (i) one share of common stock and (ii) a warrant to purchase 0.40 of a share of common stock, at a price of $1.15 per Unit. The Company received total net proceeds from the offering of $13.9 million, net of underwriting discounts and other offering expenses of $1.6 million. The warrants are exercisable any time for a period of 60 months from the date of issuance on May 29, 2018, and are exercisable at a price of $1.38 per share. The Company allocated the proceeds between the common stock and the warrants based on the relative fair value of each on the date of issuance. The estimated grant date fair value was $0.57 per warrant and was calculated based on the following assumptions used in the Black-Scholes model: expected term of 5 years, risk-free interest rate of 2.58%, expected volatility of 52.75% and expected dividend of zero. Under the shelf registration, in March 2017, the Company issued an aggregate of 11.3 million shares of common stock, $0.001 par value, in an underwritten public offering at a price of $1.50 per share. The Company received net proceeds from this offering of approximately $15.2 million, net of underwriter's commission and other offering expenses. The Company previously issued 2.3 million warrants exercisable for the Company's common stock with a strike price of $2.98 in conjunction with a June 2012 financing. These warrants expired in June 2017.

Employee Stock Plans

Employee Stock Plans	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Employee Stock Plans	Note 8 — Employee Stock Plans 2009 Stock Plan The 2009 Stock Plan, or the 2009 Plan, was amended and restated by the Board of Directors in January 2015, in February 2017 and in March 15, 2018 and approved by the Company's stockholders on April 23, 2015, on April 26, 2017 and on April 25, 2018 to, among other things, reserve an additional 2.5 million, 1.5 million and 4.0 million shares of common stock, respectively, for issuance under the 2009 Plan. As of September 30, 2018, approximately 16.5 million shares were reserved for issuance under the 2009 Plan. On March 15, 2018, Board of Directors extended the term of the Stock Plan until March 15, 2028. Employee Stock Purchase Plan The 2009 Employee Stock Purchase Plan, or the 2009 ESPP, was adopted in March 2009. The 2009 ESPP was amended by the Board of Directors in January 2015 and in February 2017, and was approved by the Company's stockholders on April 23, 2015 and April 26, 2017, to reserve an additional 1.0 million and 1.5 million shares of common stock, respectively, for issuance under the 2009 ESPP. As of September 30, 2018, approximately 4.8 million shares were reserved for issuance under the 2009 ESPP.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	Note 9 — Stock-Based Compensation The stock-based compensation expense included in the Company's consolidated financial statements for the three and nine-months ended September 30, 2018 and October 1, 2017 was as follows (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Cost of revenue $ 30 $ 32 $ 99 $ 85 Research and development 220 151 610 424 Selling, general and administrative 266 212 718 551 Total costs and expenses $ 516 $ 395 $ 1,427 $ 1,060 No stock-based compensation was capitalized during any period presented above. No stock options were granted during the three and nine month periods ended September 30, 2018 and October 1, 2017. As of September 30, 2018 and October 1, 2017, the fair value of unvested stock options, net of expected forfeitures, was approximately $172,000 and $309,000, respectively. The remaining unrecognized stock-based compensation expense is expected to be recognized over a weighted average period of 1.8 years as of September 30, 2018. Stock-Based Compensation Award Activity The following table summarizes the activity in the shares available for grant under the 2009 Plan during the nine months ended September 30, 2018: Shares Available for Grant (in thousands) Balance at December 31, 2017 3,899 Authorized 4,000 RSUs granted (1,389 ) RSUs forfeited or expired 151 Options forfeited 50 Balance at September 30, 2018 6,711 Stock Options The following table summarizes stock options outstanding and stock option activity under the 2009 Plan, and the related weighted average exercise price, for the nine months of 2018: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Term Aggregate Intrinsic Value (in thousands) (in years) (in thousands) Balance outstanding at December 31, 2017 3,558 $ 2.09 Forfeited or expired (50 ) Exercised (5 ) — Balance outstanding at September 30, 2018 3,503 $ 2.08 3.64 $ 131 Exercisable at September 30, 2018 3,116 $ 2.22 3.11 $ 80 Vested and expected to vest at September 30, 2018 3,441 $ 2.10 3.56 $ 122 The aggregate intrinsic value in the table above represents the total pretax intrinsic value, based on the Company's closing stock price of $1.00 as of September 30, 2018, which would have been received by the option holders had all option holders exercised their options as of that date. The total intrinsic value of options exercised during the three months ended September 30, 2018 and October 1, 2017 was $5,000 and $15,000, respectively. The total intrinsic value of options exercised during the nine months ended September 30, 2018 and October 1, 2017 was $5,000 and $111,000, respectively. Total cash received from employees as a result of employee stock option exercises during the nine months ended September 30, 2018 and October 1, 2017 was approximately $5,000 and $82,000, respectively. The Company settles employee stock option exercises with newly issued common shares. In connection with these exercises, there was no tax benefit realized by the Company due to the Company's current loss position. Total stock-based compensation related to stock options was $30,000 and $60,000 for the three months ended September 30, 2018 and October 1, 2017, respectively, and $102,000 and $185,000 for the nine months ended September 30, 2018 and October 1, 2017, respectively. Restricted Stock Units The Company grants restricted stock units or RSUs, to employees and board of directors with various vesting terms. RSUs entitle the holder to receive, at no cost, one common share for each RSU as it vests. In general, the Company's policy is to withhold shares in settlement of employee tax withholding obligations upon the vesting of RSUs. The stock-based compensation related to RSUs was $435,000 and $295,000 for three months and $1.2 million and $768,000 the nine months ended September 30, 2018 and October 1, 2017, respectively. As of September 30, 2018 and October 1, 2017, there was $2.1 million and $2.3 million, respectively, in unrecognized compensation expense related to RSUs. The remaining unrecognized stock-based compensation expense is expected to be recorded over a weighted average period of 2.37 years. A summary of activity for the Company's RSUs for the nine months ended September 30, 2018 and information regarding RSUs outstanding and expected to vest as of September 30, 2018 is as follows: RSUs & PRSUs Outstanding Number of Shares Weighted Average Grant Date Fair Value (in thousands) Nonvested at December 31, 2017 2,363 $ 1.54 Granted 1,388 1.50 Vested (827 ) 1.28 Forfeited (150 ) — Nonvested at September 30, 2018 2,774 $ 1.59 Employee Stock Purchase Plan The weighted average estimated fair value, as defined by the amended authoritative guidance, of rights issued pursuant to the Company's 2009 ESPP during the third quarters ended September 30, 2018 and October 1, 2017, was $0.47 and $0.41 per right, respectively. As of September 30, 2018, 1.4 million shares remained available for issuance under the 2009 ESPP. For the three and nine months ended September 30, 2018, the Company recorded stock-based compensation expense related to the 2009 ESPP of $51,000 and $168,000 respectively. The fair value of rights issued pursuant to the Company's 2009 ESPP was estimated on the commencement date of each offering period using the following weighted average assumptions: Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Expected term (months) 6.00 6.0 6.00 6.00 Risk-free interest rate 2.09 % 1.02 % 2.09 % 1.02 % Volatility 44.76 % 49.71 % 44.76 % 49.71 % Dividend yield — — — — As of September 30, 2018, the unrecognized stock-based compensation expense relating to the Company's 2009 ESPP was $25,000 and is expected to be recognized over a weighted average period of approximately 1.6 months.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 10 — Income Taxes In the third quarters of 2018 and 2017, the Company recorded a net income tax expense of $29,000 and $77,000, respectively. For the nine months ended September 30, 2018 and October 1, 2017, the Company recorded a net income tax expense of $119,000 and $147,000, respectively. The income tax expense for the three and nine months ended September 30, 2018 and October 1, 2017 relates to income taxes from the Company's foreign operations, which are cost-plus entities. Based on the available objective evidence, management believes it is more likely than not that the Company's US domestic net deferred tax assets will not be fully realizable. Accordingly, the Company has provided a full valuation allowance against the associated deferred tax assets. The Company will continue to assess the realizability of the deferred tax assets in future periods. The Company had no unrecognized tax benefits as of September 30, 2018 and December 31, 2017, which would affect the Company's effective tax rate. The accrued interest and penalties related to uncertain tax positions was not significant as of September 30, 2018 and December 31, 2017. The Company does not anticipate any material changes to its unrecognized tax benefits during the next 12 months. The Company is subject to U.S. federal income tax as well as income taxes in many U.S. states and foreign jurisdictions in which the Company operates. The U.S. tax years from 1998 forward remain effectively open to examination due to the carryover of unused net operating losses and tax credits. On December 22, 2017, the Tax Cuts and Jobs Act (the "Tax Act") was signed into legislation. The Tax Act introduced a broad range of tax reform measures that significantly change the federal income tax laws. The provisions of the Tax Act that may have significant impact on the Company include the permanent reduction of the corporate income tax rate from 35% to 21% (effective for tax years including or commencing on January 1, 2018), one-time transition tax on post-1986 foreign unremitted earnings, provision for Global Intangible Low-Taxed Income or GILTI, deduction for Foreign-Derived Intangible Income or FDII, repeal of corporate alternative minimum tax, limitation of various business deductions, modification of the maximum deduction of net operating loss with no carryback but indefinite carryforward provision and the limitation on the deductibility of executive compensation. Many provisions in the Tax Act are generally effective in tax years beginning in 2018. At December 31, 2017, the Company reflected the provisional income tax effects of the Tax Act under Accounting Standards Codification Topic 740, Income Taxes For the nine months ended September 30, 2018, the Company noted no additional guidance or information that affects the provisional amounts recorded for the year ended December 31, 2017. The Company will continue to monitor and analyze any additional guidance and information that may be issued by the federal and state tax authorities. In January 2018, the FASB released guidance on the accounting for tax on the global intangible low-taxed income (“GILTI”) provisions of the Tax Act. The GILTI provisions impose a tax on foreign income in excess of a deemed return on tangible assets of foreign corporations. The Company is not projecting any material impact from GILTI inclusions.

Information Concerning Product

Information Concerning Product Lines, Geographic Information and Revenue Concentration	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Information Concerning Product Lines, Geographic Information and Revenue Concentration	Note 11 — Information Concerning Product Lines, Geographic Information and Revenue Concentration The Company identifies its business segment based on business activities, management responsibility and geographic location. For all periods presented, the Company operated in a single reportable business segment. The following is a breakdown of revenue by product line (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Revenue by product line (1) New products $ 1,523 $ 1,478 $ 4,404 $ 4,881 Mature products 1,987 1,494 4,992 4,287 Total revenue $ 3,510 $ 2,972 $ 9,396 $ 9,168 (1) For all periods presented: New products include all products manufactured on 180 nanometer or smaller semiconductor processes. eFPGA IP license revenue is also included in new product revenue. Mature products include all products produced on semiconductor processes larger than 180 nanometers. The following is a breakdown of revenue by shipment destination (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Revenue by geography: Asia Pacific (1) $ 1,737 $ 1,455 $ 4,030 $ 4,865 North America (2) 1,370 1,158 4,409 3,380 Europe 403 359 957 923 Total revenue $ 3,510 $ 2,972 $ 9,396 $ 9,168 (1) (2) The following distributors and customers accounted for 10% or more of the Company's revenue for the periods presented: Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Distributor "A" 29 % 36 % 33 % 33 % Distributor "G" 11 % 10 % * * Distributor "I" 13 % * * Customer "G" 17 % 24 % 12 % 22 % Customer "B" 12 % * 12 % 11 % Customer "I" 10 % * * * Customer "J" * * 12 % * Customer "K" 13 % * * * The following distributors and customers accounted for 10% or more of the Company's accounts receivable as of the dates presented: September 30, 2018 December 31, 2017 Distributor "A" 43 % 45 % Distributor "I" 14 % * Customer "G" * 12 % * Represents less than 10% of accounts receivable as of the date presented. As of September 30, 2018, less than 10% of the Company's long-lived assets, including property and equipment and other assets, were located outside the United States.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12 — Commitments and Contingencies Commitments The Company's manufacturing suppliers require the forecast of wafer starts several months in advance. The Company is required to take delivery of and pay for a portion of forecasted wafer volume. As of September 30, 2018, and December 31, 2017, the Company had $25,000 and $1.1 million, respectively, of outstanding commitments for the purchase of wafer and finished goods inventory. The Company has obligations with certain suppliers for the purchase of other goods and services entered into in the ordinary course of business. As of September 30, 2018, total outstanding purchase obligations for other goods and services were $1.8 million, $1.5 million of which are due within the next twelve months. The Company leases its primary facility in Sunnyvale, California, under an operating lease that expires in March 2020. In October 2019, the Company submitted a nine months termination notice to the landlord to end the lease in July 2019. The Company expects to enter into a new lease within this time period at a savings compared to the current lease. In October 2018, the Company leased a facility for Research and Development in San Diego, California, the lease of which expires in July 2020. In addition, the Company leases development facilities in India as well as sales offices in Europe and Asia. As of September 30, 2018, future lease commitments relating to operating leases are $1.2 million, $849,000 of which are due within the next twelve months.

Litigation

Litigation	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Litigation	Note 13 — Litigation From time to time, the Company may become involved in legal actions arising in the ordinary course of business including, but not limited to, intellectual property infringement and collection matters. It cannot be assured that any such third party assertions will be resolved: (i) without costly litigation; (ii) in a manner that is not adverse to the Company's financial position, results of operations or cash flows; or (iii) without requiring royalty or other payments which may adversely impact gross profit.

The Company and Basis of Pres_2

The Company and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Fiscal period	QuickLogic's fiscal year ends on the Sunday closest to December 31 and the fiscal quarters each end on the Sunday closest to the end of each calendar quarter. QuickLogic's third fiscal quarters for 2018 and for 2017 ended on September 30, 2018 and October 1, 2017, respectively.
Liquidity	Liquidity The Company has financed its operations and capital investments through sales of common stock, capital leases, and bank lines of credit. As of September 30, 2018, the Company's principal sources of liquidity consisted of cash and cash equivalents of $24.2 million and $9.0 million line of credit with Heritage Bank of Commerce (“Heritage Bank”). On September 28, 2018, the Company entered into a Loan and Security Agreement (the "Loan Agreement") with Heritage Bank. The Loan Agreement provided for, among other things, a revolving credit facility with aggregate commitments of $9,000,000 (the “Revolving Facility”). The maturity date for loans under the Revolving Facility is September 28, 2020. As of the date hereof, the Company has drawn down $9.0 million under this revolving facility. Loans under the Revolving Facility will bear interest at a rate equal to one half of one percentage point (0.50%) above the variable rate of interest, per annum, that appears in The Wall Street Journal from time to time, whether or not such announced rate is the lowest rate available from Heritage Bank. See Note 5 to Unaudited Condensed Consolidated Financial Statements for the details of the financial covenants. Company is in compliance with all loan covenants as of September 30, 2018. The Line of credit facility with Silicon Valley Bank, which matured on September 24, 2018 was fully paid off in July 2018. On May 29, 2018, the Company issued 13.5 million shares of common stock, $0.001 par value and warrants to purchases up to 5.4 million shares of common stock at a combined price of $1.15. The warrants are exercisable any time for a period of 60 months from the date of issuance on May 29, 2018, and are exercisable at a price of $1.38 per share. See Note 7 to the Unaudited Condensed Consolidated Financial Statements for more details. The Company received net proceeds of approximately $13.9 million, after deducting underwriting commissions and other offering-related expenses. The Company expects to use the net proceeds for working capital, to accelerate the development of next generation products and for general corporate purposes. The Company may also use a portion of the net proceeds to acquire and/or license technologies and acquire and/or invest in businesses when the opportunity arises; however, the Company currently has no commitments or agreements with respect to any such transactions. The shares were offered pursuant to a shelf registration statement filed on December 9, 2016 with the SEC, as amended on March 15, 2017, which was declared effective by the SEC on March 16, 2017, and as supplemented by a prospectus supplement dated May 25, 2018, which were filed with the SEC pursuant to Rule 424(b) under the Securities Act of 1933, as amended. The Company's liquidity is affected by many factors including, among others: the level of revenue and gross profit as a result of the cyclicality of the semiconductor industry; the conversion of design opportunities into revenue; market acceptance of existing and new products, including solutions based on its Sensor Processing platforms; fluctuations in revenue as a result of product end-of-life; fluctuations in revenue as a result of the stage in the product life cycle of its customers' products; costs of securing access to and availability of adequate manufacturing capacity; levels of inventories; wafer purchase commitments; customer credit terms; the amount and timing of research and development expenditures; the timing of new product introductions; production volumes; product quality; sales and marketing efforts; the value and liquidity of its investment portfolio; changes in operating assets and liabilities; the ability to obtain or renew debt financing and to remain in compliance with the terms of existing credit facilities; the ability to raise funds from the sale of equity in the Company; the issuance and exercise of stock options and participation in the Company's employee stock purchase plan; and other factors related to the uncertainties of the industry and global economics. The Company currently uses its cash to fund its capital expenditures and operations. Based on past operating performance and current annual operating plans, the Company believes that sales generated from its new product offerings, existing cash and cash equivalents, together with financial resources from its Revolving Facility with Heritage Bank and its ability to raise additional capital in the public capital markets will be sufficient to satisfy its operations and capital expenditures and provides sufficient working capital for the next twelve months from the date the unaudited condensed consolidated financial statements as of and for the three and nine-month period ended September 30, 2018. The Company cannot provide any assurance that it will be able to raise additional capital, if required, or that such capital will be available on terms acceptable to the Company. The inability of the Company to generate sufficient sales from its new product offerings and/or raise additional capital if needed could have a material adverse effect on the Company’s operations and financial condition, including its ability to maintain compliance with its lender’s financial covenants.
Principles of Consolidation	Principles of Consolidation The consolidated financial statements include the accounts of QuickLogic and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated.
Foreign Currency	Foreign Currency The functional currency of the Company's non-U.S. operations is the U.S. dollar. Accordingly, all monetary assets and liabilities of these foreign operations are translated into U.S. dollars at current period-end exchange rates and non-monetary assets and related elements of expense are translated using historical exchange rates. Income and expense elements are translated to U.S. dollars using the average exchange rates in effect during the period. Gains and losses from the foreign currency transactions of these subsidiaries are recorded as interest income and other expense, net in the unaudited condensed consolidated statements of operations.
Uses of Estimates	Uses of Estimates The preparation of these consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities and the reported amounts of revenue and expenses during the period. Actual results could differ materially from those estimates, particularly in relation to revenue recognition, the allowance for doubtful accounts, sales returns, valuation of investments, valuation of long-lived assets including mask sets, valuation of inventories including identification of excess quantities, market value and obsolescence, measurement of stock-based compensation awards, accounting for income taxes and estimating accrued liabilities. Contracts with customers often include promises to transfer multiple products and services to a customer. Determining whether products and services are considered distinct performance obligations that should be accounted for separately versus together may require significant judgment. Judgment is required to determine the Stand Alone Selling Price, or SSP, for each distinct performance obligation. The Company uses a range of amounts to estimate SSP when each of the products and services are sold separately and determines the discount to be allocated based on the relative SSP of the various products and services when products and services sold are bundled. In instances where SSP is not directly observable, such as when the Company does not sell the product or service separately, it determines the SSP using information that may include market conditions and other observable inputs. The Company typically has more than one SSP for individual products and services due to the stratification of those products and services by customers. In these instances, the Company may use information such as the size of the customer, customer tier, type of the technology used, customer demographics, geographic region and other factors in determining the SSP.
Concentration of Risk	Concentration of Risk The Company's accounts receivable are denominated in U.S. dollars and are derived primarily from sales to customers located in North America, Asia Pacific, and Europe. The Company performs ongoing credit evaluations of its customers and generally does not require collateral. See Note 11 for information regarding concentrations associated with accounts receivable.
Revenue Recognition	Revenue Recognition The Company adopted Accounting Standards Update, or ASU, No. 2014-09, Revenue from Contracts with Customers Revenue is recognized upon transfer of control of promised products or services to customers in an amount that reflects the consideration the Company expects to receive in exchange for those products or services. The Company determines revenue recognition through the following steps: • Identification of the contract, or contracts, with a customer • Identification of the performance obligations in the contract • Determination of the transaction price • Allocation of the transaction price to the performance obligations in the contract • Recognition of revenue when, or as, we satisfy a performance obligation The Company generates most of its revenue by supplying standard hardware products, which must be programmed before they can be used in an application. The Company also generates revenue from licensing their intellectual property or IP, software tools and royalty from licensing its technology. Product Revenue The Company recognizes hardware product revenue at the point of time when control of products is transferred to the customers. Intellectual Property and Software License Revenue The Company recognizes IP and Software License revenue at the point of time when the control of IP or software license has been transferred. Maintenance Revenue The Company recognizes revenue from maintenance ratably over the term of the underlying maintenance contract term. Renewals of maintenance contracts create new performance obligations that are satisfied over the term with the revenues recognized ratably over the term. Royalty Revenue The Company recognizes royalty revenue when the later of the following events occurs: a) The subsequent sale or usage occurs. b) The performance obligation to which some or all of the sales-based royalty has been allocated has been satisfied. Contracts with Multiple Performance Obligations Some of the IP and Software Licensing contracts with customers contain multiple performance obligations. For these contracts, the Company accounts for individual performance obligations separately if they are distinct. The transaction price is allocated to the separate performance obligations on a relative standalone selling price basis. We determine the standalone selling prices based on our overall pricing objectives, taking into consideration market conditions and other factors, including the value of our contracts, type of the customer, customer tier, type of the technology used, customer demographics, geographic locations, and other factors. Deferred Revenue When the Company receives consideration, or such consideration is unconditionally due, prior to transferring goods or services to the customer under the terms of a sales contract, the Company records deferred revenue, which represents a contract liability. The Company recognizes deferred revenue as net sales once control of goods and/or services have been transferred to the customer and all revenue recognition criteria have been met and any constraints have been resolved. Assets Recognized from Costs to Obtain a Contract with a Customer The Company recognizes an asset for the incremental costs of obtaining a contract with a customer if it expects the benefit of those costs to be longer than one year. Practical expedients and exemptions (i) Taxes collected from customers and remitted to government authorities and that are related to the sales of the Company’s products are excluded from revenues. (ii) Sales commissions are expensed when incurred because the amortization period would have been one year or less. These costs are recorded in selling, general and administrative expense in the Condensed Consolidated Statements of Income. (iii) The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with original expected lengths of one year or less or (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for the services performed.
New Accounting Pronouncements	New Accounting Pronouncements Recently adopted accounting pronouncements: In May 2014, the Financial Accounting Standards Board, or FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606), which supersedes nearly all existing revenue recognition guidance under U.S. GAAP. The core principle of ASU No. 2014-09 is to recognize revenues when promised goods or services are transferred to customers in an amount that reflects the consideration to which an entity expects to be entitled for those goods or services. ASU No. 2014-09 defines a five-step process to achieve this core principle and, in doing so, more judgment and estimates may be required within the revenue recognition process than are required under existing GAAP. In applying this new guidance to contracts within its scope, an entity will: (1) identify the contract(s) with a customer, (2) identify the performance obligation in the contract, (3) determine the transaction price, (4) allocate the transaction price to the performance obligations in the contract, and (5) recognize revenue when (or as) the entity satisfies a performance obligation. Additionally, this new guidance would require significantly expanded disclosures about revenue. The new standard allows for two transition methods: (i) a full retrospective method applied to each prior reporting period presented, or (ii) a modified retrospective method applied with the cumulative effect of adoption recognized on adoption. ASU 2014-09 is effective for annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. In March, April, May and December 2016, the FASB issued ASU Nos. 2016-08, 2016-10, 2016-12 and 2016-20, respectively, which provide supplemental guidance and clarification to ASU No. 2014-09. The Company adopted ASU No. 2014-09 and other supplementary guidance effective January 1, 2018 and applied the modified retrospective approach for the transition. After evaluation of the impact of the transition, the Company determined that this new standard has no impact on the revenues of the prior years and no adjustments are required to the Company's retained earnings as of January 1, 2018. In August 2016, the FASB issued ASU No. 2016-15, Statement of Cash Flows (Topic 230) Classification of Certain Cash Receipts and Cash Payments In October 2016, the FASB issued ASU No. 2016-16, Income Taxes (Topic 740): Intra-Entity transfers of assets other than inventory. In May 2017, the FASB issued ASU No. 2017-09, Compensation-Stock Compensation (Topic 718). Recently issued accounting pronouncements not yet adopted: In February 2016, the FASB issued ASU No. 2016-02, Leases The FASB subsequently issued the following amendments to ASU No. 2016-02, which have the same effective date and transition date of January 1, 2019, and which we collectively refer to as the new leasing standards: • ASU No. 2018-10, Codification Improvements to Topic 842, Leases, • ASU No. 2018-11, Leases (Topic 842) Targeted improvements The Company is currently evaluating the impact of our pending adoption of the new leasing standards on the consolidated financial statements. In February 2018, FASB issued ASU No. 2018-02, Income Statement - Reporting Comprehensive Income. In March 2018, FASB issued ASU No. 2018-05, Income Taxes (Topic 740) In June 2018, the FASB issued ASU No. 2018-07 , Improvements to nonemployee share-based payment accounting . Currently, share-based payments to nonemployees are accounted for under Subtopic 505-50, which significantly differs from the guidance for share-based payments to employees under Topic 718. This ASU supersedes Subtopic 505-50 by expanding the scope of Topic 718 to include nonemployee awards and generally aligning the accounting for nonemployee awards with the accounting for employee awards. The Company is currently evaluating the impact of our pending adoption of the new standard on the consolidated financial statements. In August 2018 the FASB issued ASU No. 2018-13, Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement Other new accounting pronouncements are disclosed on the Annual Report on Form 10-K for the fiscal year ended December 31, 2017 filed with the SEC on March 9, 2018.
Net Loss Per Share	Basic loss per share is computed by dividing net loss available to common stockholders by the weighted average number of common shares outstanding during the period. Diluted net loss per share was computed using the weighted average number of common shares outstanding during the period plus potentially dilutive common shares outstanding during the period under the treasury stock method. In computing diluted net loss per share, the weighted average stock price for the period is used in determining the number of shares assumed to be purchased from the exercise of stock options and warrants.

Balance Sheet Components (Table

Balance Sheet Components (Tables)	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Schedule of supplemental balance sheet disclosures	The following table provides details relating to certain balance sheet line items as of September 30, 2018, and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Inventories: Work-in-process $ 3,092 $ 2,894 Finished goods 998 665 $ 4,090 $ 3,559 Other current assets: Prepaid expenses $ 853 $ 836 Other 234 161 $ 1,087 $ 997 Property and equipment: Equipment $ 10,700 $ 10,996 Software 2,788 3,139 Furniture and fixtures 42 46 Leasehold improvements 683 674 14,213 14,855 Less: Accumulated depreciation and amortization (12,525 ) (12,480 ) $ 1,688 $ 2,375 Accrued liabilities: Employee related accruals $ 1,541 $ 1,143 Other 677 510 $ 2,218 $ 1,653

Financing Obligations (Tables)

Financing Obligations (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of obligations	The following table provides details relating to the Company’s financing obligations as of September 30, 2018 and December 31, 2017: As of September 30, 2018 December 31, 2017 (in thousands) Debt and capital lease obligations: Revolving line of credit $ 9,000 $ 6,000 Capital leases 502 654 9,502 6,654 Less: Current portion of debt and capital lease obligations (9,360 ) (6,299 ) Long-term portion of debt and capital lease obligations $ 142 $ 355

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of financial assets measured at fair value on a recurring basis	The following table presents the Company's financial assets that are measured at fair value on a recurring basis as of September 30, 2018 and December 31, 2017, consistent with the fair value hierarchy provisions of the authoritative guidance (in thousands): September 30, 2018 December 31, 2017 Total Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Assets: Money market funds (1) $ 5,753 $ 784 $ 4,969 $ — $ 15,635 $ 7,176 $ 8,459 $ — Total assets $ 5,753 $ 784 $ 4,969 $ — $ 15,635 $ 7,176 $ 8,459 $ — (1) Money market funds are included in cash and cash equivalents on the accompanying consolidated balance sheets as of September 30, 2018 and December 31, 2017.

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Schedule of stock based compensation expense	The stock-based compensation expense included in the Company's consolidated financial statements for the three and nine-months ended September 30, 2018 and October 1, 2017 was as follows (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Cost of revenue $ 30 $ 32 $ 99 $ 85 Research and development 220 151 610 424 Selling, general and administrative 266 212 718 551 Total costs and expenses $ 516 $ 395 $ 1,427 $ 1,060
Summary of the activity in the shares available for grant under the 2009 plan	The following table summarizes the activity in the shares available for grant under the 2009 Plan during the nine months ended September 30, 2018: Shares Available for Grant (in thousands) Balance at December 31, 2017 3,899 Authorized 4,000 RSUs granted (1,389 ) RSUs forfeited or expired 151 Options forfeited 50 Balance at September 30, 2018 6,711
Summary of stock options outstanding and stock option activity under the 1999 plan and the 2009 plan, and the related weighted average exercise price	The following table summarizes stock options outstanding and stock option activity under the 2009 Plan, and the related weighted average exercise price, for the nine months of 2018: Number of Shares Weighted Average Exercise Price Weighted Average Remaining Term Aggregate Intrinsic Value (in thousands) (in years) (in thousands) Balance outstanding at December 31, 2017 3,558 $ 2.09 Forfeited or expired (50 ) Exercised (5 ) — Balance outstanding at September 30, 2018 3,503 $ 2.08 3.64 $ 131 Exercisable at September 30, 2018 3,116 $ 2.22 3.11 $ 80 Vested and expected to vest at September 30, 2018 3,441 $ 2.10 3.56 $ 122
Summary of activity for RSUs and PRSUs	A summary of activity for the Company's RSUs for the nine months ended September 30, 2018 and information regarding RSUs outstanding and expected to vest as of September 30, 2018 is as follows: RSUs & PRSUs Outstanding Number of Shares Weighted Average Grant Date Fair Value (in thousands) Nonvested at December 31, 2017 2,363 $ 1.54 Granted 1,388 1.50 Vested (827 ) 1.28 Forfeited (150 ) — Nonvested at September 30, 2018 2,774 $ 1.59
Summary of the fair value of rights issued pursuant to ESPP	The fair value of rights issued pursuant to the Company's 2009 ESPP was estimated on the commencement date of each offering period using the following weighted average assumptions: Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Expected term (months) 6.00 6.0 6.00 6.00 Risk-free interest rate 2.09 % 1.02 % 2.09 % 1.02 % Volatility 44.76 % 49.71 % 44.76 % 49.71 % Dividend yield — — — —

Information Concerning Produc_2

Information Concerning Product Lines, Geographic Information and Revenue Concentration (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of revenue by product line	The following is a breakdown of revenue by product line (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Revenue by product line (1) New products $ 1,523 $ 1,478 $ 4,404 $ 4,881 Mature products 1,987 1,494 4,992 4,287 Total revenue $ 3,510 $ 2,972 $ 9,396 $ 9,168 (1) For all periods presented: New products include all products manufactured on 180 nanometer or smaller semiconductor processes. eFPGA IP license revenue is also included in new product revenue. Mature products include all products produced on semiconductor processes larger than 180 nanometers.
Schedule of revenue by shipment destination	The following is a breakdown of revenue by shipment destination (in thousands): Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Revenue by geography: Asia Pacific (1) $ 1,737 $ 1,455 $ 4,030 $ 4,865 North America (2) 1,370 1,158 4,409 3,380 Europe 403 359 957 923 Total revenue $ 3,510 $ 2,972 $ 9,396 $ 9,168 (1) (2)
Summary of distributors and customers accounting for 10% or more of revenue	The following distributors and customers accounted for 10% or more of the Company's revenue for the periods presented: Three Months Ended Nine Months Ended September 30, 2018 October 1, 2017 September 30, 2018 October 1, 2017 Distributor "A" 29 % 36 % 33 % 33 % Distributor "G" 11 % 10 % * * Distributor "I" 13 % * * Customer "G" 17 % 24 % 12 % 22 % Customer "B" 12 % * 12 % 11 % Customer "I" 10 % * * * Customer "J" * * 12 % * Customer "K" 13 % * * *
Schedule of distributors and customers accounting for 10% or more of accounts receivable	The following distributors and customers accounted for 10% or more of the Company's accounts receivable as of the dates presented: September 30, 2018 December 31, 2017 Distributor "A" 43 % 45 % Distributor "I" 14 % * Customer "G" * 12 % * Represents less than 10% of accounts receivable as of the date presented.

The Company and Basis of Pres_3

The Company and Basis of Presentation - Liquidity (Details) - USD ($)	Sep. 28, 2018	May 29, 2018	Mar. 31, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017	Jan. 01, 2017
Liquidity [Line Items]
Cash and cash equivalents				$ 24,219,000	$ 19,029,000	$ 16,527,000	$ 14,870,000
Line of credit				9,000,000		6,000,000
Revolving line of credit				$ 9,000,000		$ 6,000,000
Share price (in dollars per share)		$ 1.15	$ 1.50	$ 1
Common stock, par value (in dollars per share)		$ 0.001	$ 0.001	$ 0.001		$ 0.001
Exercisable period of warrants		60 months
Warrants exercise price per share		$ 1.38
Net proceeds from issuance of common stock		$ 13,900,000	$ 15,200,000	$ 15,859,000	$ 17,316,000
Common stock
Liquidity [Line Items]
Shares of common stock issued (in shares)		13,500,000	11,300,000
Common stock | Maximum
Liquidity [Line Items]
Warrants to purchase aggregate shares of common stock		5,400,000
Heritage Bank of Commerce
Liquidity [Line Items]
Line of credit				9,000,000
Heritage Bank of Commerce | Revolving line of credit
Liquidity [Line Items]
Line of credit	$ 9,000,000			9,000,000
Line of credit aggregate commitments	$ 9,000,000
Line of credit facility, maturity date	Sep. 28, 2020
Line of credit interest rate	0.50%
Revolving line of credit				$ 9,000,000
Silicon Valley Bank | Revolving line of credit
Liquidity [Line Items]
Line of credit facility, maturity date	Sep. 24, 2018

Net Loss Per Share (Details)

Net Loss Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	May 29, 2018
Common stock | Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Warrants to purchase aggregate shares of common stock					5,400,000
2009 Stock Plans
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Common shares (in shares)	7,000,000	7,200,000	7,000,000	7,200,000

Balance Sheet Components (Detai

Balance Sheet Components (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventories:
Work-in-process	$ 3,092	$ 2,894
Finished goods	998	665
Inventories	4,090	3,559
Other current assets:
Prepaid expenses	853	836
Other	234	161
Other current assets	1,087	997
Property and equipment:
Property and equipment, gross	14,213	14,855
Less: Accumulated depreciation and amortization	(12,525)	(12,480)
Property and equipment, net	1,688	2,375
Accrued liabilities:
Employee related accruals	1,541	1,143
Other	677	510
Accrued liabilities	2,218	1,653
Equipment
Property and equipment:
Property and equipment, gross	10,700	10,996
Software
Property and equipment:
Property and equipment, gross	2,788	3,139
Furniture and fixtures
Property and equipment:
Property and equipment, gross	42	46
Leasehold improvements
Property and equipment:
Property and equipment, gross	$ 683	$ 674

Financing Obligations - Schedul

Financing Obligations - Schedule of Obligations (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt and capital lease obligations:
Revolving line of credit	$ 9,000	$ 6,000
Capital leases	502	654
Debt and capital lease obligations	9,502	6,654
Less: Current portion of debt and capital lease obligations	(9,360)	(6,299)
Long-term portion of debt and capital lease obligations	$ 142	$ 355

Financing Obligations - Revolvi

Financing Obligations - Revolving Line of Credit (Details) - USD ($)	Sep. 28, 2018	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Aggregate credit facility commitment amount		$ 9,000,000	$ 6,000,000
Revolving line of credit		9,000,000	$ 6,000,000
Heritage Bank of Commerce
Debt Instrument [Line Items]
Aggregate credit facility commitment amount		9,000,000
Heritage Bank of Commerce | Revolving line of credit
Debt Instrument [Line Items]
Aggregate credit facility commitment amount	$ 9,000,000	$ 9,000,000
Line of credit facility, maturity date	Sep. 28, 2020
Line of credit interest rate	0.50%
Interest rate		5.75%
Revolving line of credit		$ 9,000,000
Financial covenants		Financial covenants of the Revolving Facility require the Company to (i) maintain at all times a balance of unrestricted cash in its pledged account not less than the principal amount of all advances owing to Heritage Bank and (ii) maintain at all times, but subject to periodic reporting as of the last day of each quarter, not less than nine months of Remaining Months Liquidity. For purposes of the Revolving Facility, “Remaining Months Liquidity” means (i) unrestriced cash maintained at Heritage Bank (including cash in the Company’s pledged account) minus the outstanding principal amount of the cash advances under the Revolving Facility, divided by (ii) average trailing three (3) month EBITDA.
Remaining months liquidity convenant period		9 months
Average trailing period for EBITDA		3 months
Silicon Valley Bank | Revolving line of credit
Debt Instrument [Line Items]
Line of credit facility, maturity date	Sep. 24, 2018

Financing Obligations - Capital

Financing Obligations - Capital Leases (Details) - USD ($) $ in Thousands

1 Months Ended

24 Months Ended

25 Months Ended

Jul. 31, 2018

Dec. 31, 2017

May 31, 2017

Feb. 28, 2017

Dec. 31, 2015

Aug. 02, 2015

Nov. 30, 2019

Nov. 30, 2017

Jul. 31, 2020

Dec. 31, 2019

May 31, 2019

Feb. 28, 2019

Jul. 30, 2017

Sep. 30, 2018

Debt Instrument [Line Items]

Capital lease outstanding

$ 654

$ 502

Capital lease classified as current liability

$ 299

360

Design Software | Capital lease obligation, leased July 2018

Debt Instrument [Line Items]

Imputed interest rate

7.64%

Periodic payments

$ 64

Capital lease outstanding

115

Capital lease classified as current liability

56

Capital lease term

3 years

Design Software | Capital lease obligation, leased December 2017, one

Debt Instrument [Line Items]

Imputed interest rate

6.48%

Periodic payments

$ 52

Capital lease outstanding

95

Capital lease classified as current liability

46

Capital lease term

3 years

Design Software | Capital lease obligation, leased December 2017, two

Debt Instrument [Line Items]

Imputed interest rate

6.30%

Periodic payments

$ 34

Capital lease outstanding

163

Capital lease classified as current liability

129

Capital lease term

2 years

Design Software | Capital lease obligation, leased May 2017

Debt Instrument [Line Items]

Imputed interest rate

5.48%

Periodic payments

$ 92

Capital lease outstanding

87

Capital lease term

3 years

Design Software | Capital lease obligation, leased February 2017

Debt Instrument [Line Items]

Imputed interest rate

5.57%

Periodic payments

$ 44

Capital lease outstanding

42

Capital lease classified as current liability

$ 42

Capital lease term

3 years

Design Software | Capital lease obligation, leased December 2015

Debt Instrument [Line Items]

Imputed interest rate

4.88%

Periodic payments

$ 23

$ 182

Capital lease term

2 years

Design Software | Capital lease obligation, leased July 2015

Debt Instrument [Line Items]

Imputed interest rate

4.91%

Periodic payments

$ 67

$ 202

Capital lease term

3 years

Scenario, forecast | Design Software | Capital lease obligation, leased July 2018

Debt Instrument [Line Items]

Periodic payments

$ 191

Scenario, forecast | Design Software | Capital lease obligation, leased December 2017, one

Debt Instrument [Line Items]

Periodic payments

$ 156

Scenario, forecast | Design Software | Capital lease obligation, leased December 2017, two

Debt Instrument [Line Items]

Periodic payments

$ 273

Scenario, forecast | Design Software | Capital lease obligation, leased May 2017

Debt Instrument [Line Items]

Periodic payments

$ 276

Scenario, forecast | Design Software | Capital lease obligation, leased February 2017

Debt Instrument [Line Items]

Periodic payments

$ 133

Fair Value Measurements (Detail

Fair Value Measurements (Details) - Fair value, measurements, recurring - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	$ 5,753	$ 15,635
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	784	7,176
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	4,969	8,459
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total assets	0	0
Money market funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	5,753	15,635
Money market funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	784	7,176
Money market funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	4,969	8,459
Money market funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 0	$ 0

Stockholders' Equity - Common S

Stockholders' Equity - Common Stock and Preferred Stock (Details) - shares	Sep. 30, 2018	Dec. 31, 2017	Apr. 26, 2017
Equity [Abstract]
Common stock authorized to issue (in shares)	200,000,000	200,000,000	100,000,000
Preferred stock, authorized but unissued (in shares)	10,000,000	10,000,000

Stockholders' Equity - Issuance

Stockholders' Equity - Issuance of Common Stock and Warrants (Details)	May 29, 2018USD ($)$ / sharesshares	Mar. 31, 2017USD ($)$ / sharesshares	Sep. 30, 2018USD ($)$ / shares	Oct. 01, 2017USD ($)	Dec. 31, 2017$ / shares	Jun. 30, 2017$ / sharesshares	Mar. 16, 2017USD ($)offering
Class Of Stock [Line Items]
Shelf registration, number of offerings | offering							1
Shelf registration, maximum offering | $							$ 40,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001	$ 0.001		$ 0.001
Number of common stock contain in each unit | shares	1
Number of warrant contain in each unit | shares	0.40
Exercise price of each unit | $ / shares	$ 1.15
Net proceeds from issuance of common stock | $	$ 13,900,000	$ 15,200,000	$ 15,859,000	$ 17,316,000
Underwriting discounts and other offering expenses | $	$ 1,600,000		$ 1,638,000	$ 1,771,000
Exercisable period of warrants	60 months
Strike price of warrants (in dollars per share) | $ / shares	$ 1.38
Fair value assumptions of warrants, expected term	5 years
Underwritten public offering price | $ / shares	$ 1.15	$ 1.50	$ 1
June 2012 financing
Class Of Stock [Line Items]
Strike price of warrants (in dollars per share) | $ / shares						$ 2.98
Warrants outstanding (in shares) | shares						2,300,000
Measurement Input, Share Price
Class Of Stock [Line Items]
Warrants and Rights Outstanding, Measurement Input	0.57
Measurement Input, Risk Free Interest Rate
Class Of Stock [Line Items]
Warrants and Rights Outstanding, Measurement Input	2.58
Measurement Input, Price Volatility
Class Of Stock [Line Items]
Warrants and Rights Outstanding, Measurement Input	52.75
Measurement Input, Expected Dividend Rate
Class Of Stock [Line Items]
Warrants and Rights Outstanding, Measurement Input	0
Common stock
Class Of Stock [Line Items]
Aggregate shares of common stock issued | shares	13,500,000	11,300,000
Common stock | Maximum
Class Of Stock [Line Items]
Warrants to purchase aggregate shares of common stock | shares	5,400,000

Employee Stock Plans - 2009 Sto

Employee Stock Plans - 2009 Stock Plan (Details) - 2009 Plan - shares	Apr. 25, 2018	Apr. 26, 2017	Apr. 23, 2015	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock reserved for issuance (in shares)	4,000,000	1,500,000	2,500,000
Shares reserved for issuance (in shares)				16,500,000

Employee Stock Plans - Employee

Employee Stock Plans - Employee Stock Purchase Plan (Details) - 2009 ESPP - shares	Apr. 26, 2017	Apr. 23, 2015	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares of common stock reserved for issuance (in shares)	1,500,000	1,000,000
Shares reserved for issuance (in shares)			4,800,000

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Allocation of Recognized Period Cost (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	$ 516,000	$ 395,000	$ 1,427,000	$ 1,060,000
Stock-based compensation, capitalized costs	0	0	0	0
Cost of revenue
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	30,000	32,000	99,000	85,000
Research and development
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	220,000	151,000	610,000	424,000
Selling, general and administrative
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Total costs and expenses	$ 266,000	$ 212,000	$ 718,000	$ 551,000

Stock-Based Compensation - Narr

Stock-Based Compensation - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	May 29, 2018	Dec. 31, 2017	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of unvested stock options, net of unvested forfeitures	$ 172,000	$ 309,000	$ 172,000	$ 309,000
Share price (in dollars per share)	$ 1		$ 1		$ 1.15		$ 1.50
The total intrinsic value of options exercised	$ 5,000	15,000	$ 5,000	111,000
Total cash received from employees as a result of employee stock option exercises			5,000	82,000
Total stock-based compensation	$ 516,000	$ 395,000	$ 1,427,000	$ 1,060,000
Weighted average estimated fair value (in dollars per share)	$ 1.59		$ 1.59			$ 1.54
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted in period	0	0	0	0
Total stock-based compensation	$ 30,000	$ 60,000	$ 102,000	$ 185,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, weighted average period	1 year 9 months 18 days
Unrecognized compensation expense	$ 25,000		$ 25,000
Unrecognized stock-based compensation expense weighted average period			1 month 18 days
Weighted average estimated fair value (in dollars per share)	$ 0.47	$ 0.41	$ 0.47	$ 0.41
Shares available for issuance (in shares)	1,400,000		1,400,000
Stock-based compensation expense	$ 51,000		$ 168,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation	435,000	$ 295,000	1,200,000	$ 768,000
Unrecognized compensation expense	$ 2,100,000	$ 2,300,000	$ 2,100,000	$ 2,300,000
Unrecognized stock-based compensation expense weighted average period			2 years 4 months 13 days

Stock-Based Compensation - Sc_2

Stock-Based Compensation - Schedule of Stock Based Compensation Award Activity (Details) - shares	Apr. 25, 2018	Apr. 26, 2017	Apr. 23, 2015	Sep. 30, 2018
Shares Available for Grant
RSUs granted (in shares)				(1,388,000)
Forfeited or expired (in shares)				150,000
2009 Plan
Shares Available for Grant
Authorized (in shares)	4,000,000	1,500,000	2,500,000
Balance at end of period (in shares)				16,500,000
2009 Plan | RSUs and Performance RSUs
Shares Available for Grant
Balance at beginning of period (in shares)				3,899,000
Authorized (in shares)				4,000,000
Options forfeited (in shares)				50,000
Balance at end of period (in shares)				6,711,000
2009 Plan | Restricted Stock Units (RSUs)
Shares Available for Grant
RSUs granted (in shares)				(1,389,000)
Forfeited or expired (in shares)				151,000

Stock-Based Compensation - Sc_3

Stock-Based Compensation - Schedule of Stock Options Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)$ / sharesshares
Number of Shares
Balance outstanding at beginning of period, (in shares) | shares	3,558
Forfeited or expired, (in shares) | shares	(50)
Exercised (in shares) | shares	(5)
Balance outstanding at end of period, (in shares) | shares	3,503
Exercisable, (in shares) | shares	3,116
Vested and expected to vest, (in shares) | shares	3,441
Weighted Average Exercise Price
Balance outstanding at beginning of period, (in dollars per share) | $ / shares	$ 2.09
Forfeited or expired, (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	0
Balance outstanding at end of period, (in dollars per share) | $ / shares	2.08
Exercisable, (in dollars per share) | $ / shares	2.22
Vested and expected to vest, (in dollars per share) | $ / shares	$ 2.10
Weighted Average Remaining Term
Balance outstanding	3 years 7 months 20 days
Exercisable	3 years 1 month 9 days
Vested and expected to vest	3 years 6 months 21 days
Aggregate Intrinsic Value
Balance outstanding | $	$ 131
Exercisable | $	80
Vested and expected to vest | $	$ 122

Stock-Based Compensation - Sc_4

Stock-Based Compensation - Schedule of Restricted Stock and Restricted Stock Units Activity (Details) shares in Thousands	9 Months Ended
	Sep. 30, 2018$ / sharesshares
Number of Shares
Nonvested at beginning of period, (in shares) | shares	2,363
Granted, (in shares) | shares	1,388
Vested, (in shares) | shares	(827)
Forfeited, (in shares) | shares	(150)
Nonvested at end of period, (in shares) | shares	2,774
Weighted Average Grant Date Fair Value
Nonvested at beginning of period, (in dollars per share) | $ / shares	$ 1.54
Granted, (in dollars per share) | $ / shares	1.50
Vested, (in dollars per share) | $ / shares	1.28
Forfeited, (in dollars per shares) | $ / shares	0
Nonvested at end of period, (in dollars per share) | $ / shares	$ 1.59

Stock-Based Compensation - Sc_5

Stock-Based Compensation - Schedule of Employee Stock Purchase Plan (Details) - ESPP	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (months)	6 months	6 months	6 months	6 months
Risk-free interest rate	2.09%	1.02%	2.09%	1.02%
Volatility	44.76%	49.71%	44.76%	49.71%
Dividend yield	0.00%	0.00%	0.00%	0.00%

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Net income tax expense (benefit)	$ 29,000	$ 77,000	$ 119,000	$ 147,000
Unrecognized tax benefits that would affect effective tax rate	$ 0		$ 0		$ 0
Corporate income tax rate			21.00%		35.00%

Information Concerning Produc_3

Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Product Line (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Revenue from External Customer [Line Items]
Total revenue	$ 3,510	$ 2,972	$ 9,396	$ 9,168
New products
Revenue from External Customer [Line Items]
Total revenue	1,523	1,478	4,404	4,881
Mature products
Revenue from External Customer [Line Items]
Total revenue	$ 1,987	$ 1,494	$ 4,992	$ 4,287

Information Concerning Produc_4

Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Shipment Destination (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 3,510	$ 2,972	$ 9,396	$ 9,168
Asia Pacific (1)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	1,737	1,455	4,030	4,865
North America (2)
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	1,370	1,158	4,409	3,380
Europe
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	403	359	957	923
China
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 842	$ 429	$ 1,400	$ 1,100
Percentage of total revenue	24.00%	14.00%	15.00%	12.00%
Korea
Revenues from External Customers and Long-Lived Assets [Line Items]
Total revenue	$ 574	$ 636	$ 1,000	$ 1,800
Percentage of total revenue	16.00%	21.00%	11.00%	19.00%
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Percentage of total revenue	39.00%	37.00%	46.00%	36.00%
Total revenue	$ 1,400	$ 1,100	$ 4,300	$ 3,300

Information Concerning Produc_5

Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Customer and Distributor Concentration (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017	Dec. 31, 2017
Distributor A
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	29.00%	36.00%	33.00%	33.00%
Percentage of accounts receivable from major customer	43.00%		43.00%		45.00%
Distributor G
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	11.00%	10.00%
Distributor I
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	13.00%
Percentage of accounts receivable from major customer	14.00%		14.00%
Customer G
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	17.00%	24.00%	12.00%	22.00%
Percentage of accounts receivable from major customer					12.00%
Customer B
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	12.00%		12.00%	11.00%
Customer J
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers			12.00%
Customer K
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	13.00%
Customer I
Revenue, Major Customer [Line Items]
Percentage of revenue from major distributors and customers	10.00%

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($)	1 Months Ended		9 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Purchase obligations due within next twelve months			$ 1,500,000
Operating lease relating to future lease commitments			1,200,000
Operating lease relating to future lease commitments due within the next twelve months			$ 849,000
Scenario Forecast
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Operating lease end date	2019-07
Operating lease termination notice period	9 months
San Diego, California | Research and Development centre | Subsequent Event
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Operating lease expiration date		2020-07
Primary facility lease | Sunnyvale, California
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Operating lease expiration date			2020-03
Wafer and finished goods inventory
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Outstanding commitment for purchases			$ 25,000	$ 1,100,000
Other goods and services
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Total outstanding purchase obligations			$ 1,800,000