QuickLogic (QUIK) 10-K 23 Mar 21 2020 FY Annual report Financial data

Document And Entity Information

Document And Entity Information - USD ($)	12 Months Ended
	Jan. 03, 2021	Mar. 15, 2021	Jun. 28, 2020
Document Information [Line Items]
Entity Central Index Key	0000882508
Entity Registrant Name	QUICKLOGIC Corp
Amendment Flag	false
Current Fiscal Year End Date	--01-03
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Document Type	10-K
Document Annual Report	true
Document Period End Date	Jan. 3, 2021
Document Transition Report	false
Entity File Number	000-22671
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	77-0188504
Entity Address, Address Line One	2220 Lundy Avenue
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95131
City Area Code	408
Local Phone Number	990-4000
Title of 12(b) Security	Common Stock, $0.001 par value
Trading Symbol	QUIK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 33,481,698
Entity Common Stock, Shares Outstanding		11,270,290

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
Current assets:
Cash and cash equivalents and restricted cash	$ 22,748	$ 21,548
Accounts receivable, net of allowances for doubtful accounts of $0	1,688	1,991
Inventories	2,688	3,260
Other current assets	1,066	1,565
Total current assets	28,190	28,364
Property and equipment, net	548	830
Capitalized internal-use software, net	986	333
Right of use assets, net	1,839	2,370
Intangible assets, net	860	1,008
Goodwill	185	185
Other assets	280	314
TOTAL ASSETS	32,888	33,404
Current liabilities:
Revolving line of credit	15,000	15,000
Trade payables	935	1,003
Accrued liabilities	1,340	1,133
Deferred revenue	52	158
Lease liabilities, current	685	704
Total current liabilities	18,012	17,998
Long-term liabilities:
Lease liabilities, non-current	1,197	1,583
Paycheck Protection Program loan	1,192	0
Total liabilities	20,401	19,581
Commitments (Note 15)
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value; 200,000 shares authorized; 11,094 and 8,331 shares issued and outstanding as of January 3, 2021 and December 29, 2019, respectively	11	8
Additional paid-in capital	306,885	297,073
Accumulated deficit	(294,409)	(283,258)
Total stockholders' equity	12,487	13,823
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 32,888	$ 33,404

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parentheticals) - USD ($) shares in Thousands, $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
Allowance for doubtful accounts	$ 0	$ 0
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000	10,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	200,000	200,000
Common stock, shares issued (in shares)	11,094	8,331
Common stock, shares outstanding (in shares)	11,094	8,331

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) shares in Thousands		12 Months Ended
		Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Revenue	[1]	$ 8,634,000	$ 10,310,000	$ 12,629,000
Cost of revenue		4,386,000	4,405,000	6,295,000
Gross profit		4,248,000	5,905,000	6,334,000
Operating expenses:
Research and development		7,544,000	12,350,000	9,948,000
Selling, general and administrative		6,820,000	8,918,000	9,982,000
Restructuring costs		753,000	0	0
Loss from operations		(10,869,000)	(15,363,000)	(13,596,000)
Interest expense		(328,000)	(350,000)	(108,000)
Interest income and other expense, net		97,000	189,000	77,000
Loss before income taxes		(11,100,000)	(15,524,000)	(13,627,000)
Provision for (benefit from) income taxes		51,000	(80,000)	152,000
Net loss		$ (11,151,000)	$ (15,444,000)	$ (13,779,000)
Net loss per share: (1)
Basic and diluted (in dollars per share)	[2]	$ (1.14)	$ (2.02)	$ (2.16)
Weighted average shares: (1)
Basic and diluted (in shares)	[2]	9,781	7,663	6,365
[1]	New products include all products manufactured on 180 nanometer or smaller semiconductor processes, eFPGA IP license, QuickAI and SensiML AI software as a service (SaaS) revenues. Mature products include all products produced on semiconductor processes larger than 180 nanometer.
[2]	Net loss per share and weighted average shares, basic and diluted are adjusted to reflect 1-for-14 reverse stock split effected on December 23, 2019.

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 29, 2019	Dec. 30, 2018
Cash flows from operating activities:
Net loss	$ (11,151,000)		$ (15,444,000)	$ (13,779,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	817,000		1,201,000	1,276,000
Stock-based compensation	1,739,000		3,144,000	1,901,000
Write-down of inventories	199,000		94,000	386,000
Write-off of equipment	44,000		4,000	5,000
Tax benefit from acquisition	0		(185,000)	0
Gain on disposal of assets	0		0	(62,000)
Changes in operating assets and liabilities:
Accounts receivable	303,000		218,000	(1,284,000)
Inventories	373,000		483,000	(662,000)
Other assets	533,000		229,000	(879,000)
Trade payables	298,000		(456,000)	223,000
Accrued liabilities	207,000		(1,024,000)	235,000
Deferred income	(106,000)		158,000	0
Other long-term liabilities	0		(16,000)	2,000
Net cash used in operating activities	(6,744,000)		(11,594,000)	(12,638,000)
Cash flows from investing activities:
Capital expenditures for property and equipment	(253,000)		(576,000)	(351,000)
Capitalized internal-use software	(801,000)		(365,000)	0
Cash received from business acquisition	0		20,000	0
Proceeds from sale of assets	0		0	63,000
Net cash used in investing activities	(1,054,000)		(921,000)	(288,000)
Cash flows from financing activities:
Payment of finance lease obligations	(270,000)	$ (365,000)	(365,000)	(407,000)
Proceeds from Paycheck Protection Program loan	1,191,000		0	0
Proceeds from line of credit	57,000,000		46,000,000	36,000,000
Repayment of line of credit	(57,000,000)		(46,000,000)	(27,000,000)
Proceeds from issuance of common stock	9,296,000		9,437,000	16,215,000
Stock issuance costs	(1,147,000)		(1,181,000)	(1,638,000)
Taxes paid related to net settlement of equity awards	(72,000)		(291,000)	(308,000)
Net cash provided by financing activities	8,998,000		7,600,000	22,862,000
Net (decrease) increase in cash, cash equivalents and restricted cash	1,200,000		(4,915,000)	9,936,000
Cash, cash equivalents and restricted cash at the beginning of the period	21,548,000		26,463,000	16,527,000
Cash, cash equivalents, and restricted cash at the end of the period	22,748,000	$ 21,548,000	21,548,000	26,463,000
Supplemental disclosures of cash flow information:
Interest paid	277,000		300,000	89,000
Income taxes paid	24,000		126,000	171,000
Fair value of common stock issued as consideration for business acquisition	0		903,000	0
Finance lease obligation to finance capital expenditures	670,000		471,000	424,000
Purchase of equipment included in accounts payable	$ 0		$ 0	$ 5,000

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands		Common Stock [Member]		Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2017	[1]	5,753,000
Balance at Dec. 31, 2017		$ 6	[1]	$ 268,907	$ (254,035)	$ 14,878
Common stock issued under stock plans and employee stock purchase plans (in shares)	[1]	105
Common stock issued under stock plans and employee stock purchase plans		$ 0	[1]	353	0	353
Common stock offering, net of issuance costs (in shares)	[1]	965,000
Common stock offering, net of issuance costs		$ 1	[1]	13,901	0	13,902
Stock-based compensation		0	[1]	1,901	0	1,901
Net loss		$ 0	[1]	0	(13,779)	(13,779)
Balance (in shares) at Dec. 30, 2018	[1]	6,823,000
Balance at Dec. 30, 2018		$ 7	[1]	285,062	(267,814)	17,255
Common stock issued under stock plans and employee stock purchase plans (in shares)	[1]	110,000
Common stock issued under stock plans and employee stock purchase plans		$ 0	[1]	(37)	0	(37)
Common stock offering, net of issuance costs (in shares)	[1]	1,314,000
Common stock offering, net of issuance costs		$ 1	[1]	8,001	0	8,002
Stock-based compensation		0	[1]	3,144	0	3,144
Net loss		$ 0	[1]	0	(15,444)	(15,444)
Common stock issued for SensiML acquisition (in shares)	[1]	84,000
Common stock issued for SensiML acquisition		$ 0	[1]	903	0	903
Balance (in shares) at Dec. 29, 2019	[1]	8,331,000
Balance at Dec. 29, 2019		$ 8	[1]	297,073	(283,258)	13,823
Common stock issued under stock plans and employee stock purchase plans (in shares)	[1]	121,000
Common stock issued under stock plans and employee stock purchase plans		$ 0	[1]	(24)	0	(24)
Common stock offering, net of issuance costs (in shares)	[1]	2,642,000
Common stock offering, net of issuance costs		$ 3	[1]	8,097	0	8,100
Stock-based compensation		0	[1]	1,739	0	1,739
Net loss		$ 0	[1]	0	(11,151)	(11,151)
Balance (in shares) at Jan. 03, 2021	[1]	11,094,000
Balance at Jan. 03, 2021		$ 11	[1]	$ 306,885	$ (294,409)	$ 12,487
[1]	Common stock, par value and additional paid-in capital amounts are adjusted to reflect 1-for-14 reverse stock split effected on December 23, 2019.

Note 1 - The Company and Basis

Note 1 - The Company and Basis of Presentation	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block]	1 QuickLogic Corporation, ("QuickLogic" or, the "Company"), was founded in 1988 1999. QuickLogic’s fiscal year ends on the Sunday closest to December 31. 2020 2019 2018 January 3, 2021 December 29, 2019 December 30, 2018 COVID- 19 On January 30, 2020, 19 February 28, 2020, 19 19, As such, while COVID- 19 12 months ended January 3, 2021, 19 may 19. 19 19 may may 19 Restructuring In January 2020, January 24, 2020. twelve 2020, Liquidity The Company has financed its operations and capital investments through sale of common stock, capital and operating leases, a revolving line of credit and cash flows from operations. As of January 3, 2021 On September 28, 2018, On December 21, 2018, On November 6, 2019, one September 28, 2021. one one five one one On December 11, 2020, one September 28, 2022 one one The Company was in compliance with all loan covenants as of the end of the current reporting period. As of January 3, 2021, On June 21, 2019, 11 On June 22, 2020, 11 The Company currently uses its cash to fund its working capital, to accelerate the development of next generation products and for general corporate purposes. Based on past performance and current expectations, the Company believes that its existing cash and cash equivalents, together with available financial resources from the Revolving Facility with Heritage Bank will be sufficient to fund its operations and capital expenditures and provide adequate working capital for the next twelve Various factors affect the Company’s liquidity, 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 ArcticLink ® ® S3 Over the longer term, the Company anticipates that sales generated from its new product offerings, existing cash and cash equivalents, together with financial resources from its Revolving Facility with Heritage Bank, assuming renewal of the Revolving Facility or the Company entering into a new debt agreement with an alternative lender prior to the expiration of the revolving line of credit in September 2022, Principles of Consolidation The consolidated financial statements have been prepared in accordance with Generally Accepted Accounting Principles, in the United States of America or US GAAP, and the applicable rules and regulations of the Securities and Exchange Commission, or SEC, and 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 statements of operations. Use 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 from those estimates, particularly in relation to revenue recognition; the allowance for doubtful accounts; sales returns; valuation of long-lived assets including mask sets; valuation of goodwill; capitalized internal-use software and related amortizable lives and intangibles related to the acquisition of SensiML, including the estimated useful lives of acquired intangible assets, 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 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 not may one may 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 14 Reverse Stock Split On November 26, 2019, 1 1 December 6, 2019. 1 $1.00 January 9, 2020,

Note 2 - Significant Accounting

Note 2 - Significant Accounting Policies	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Significant Accounting Policies [Text Block]	NOTE 2 Cash Equivalents The Company considers all short-term, highly liquid investments with an original or a remaining maturity at purchase of ninety Fair Value The guidance for the fair value option for financial assets and financial liabilities provides companies the irrevocable option to measure many financial assets and liabilities at fair value with changes in fair value recognized in earnings or equity. The Company has not not Foreign Currency Transactions All of the Company’s sales and cost of manufacturing are transacted in U.S. dollars. The Company conducts a portion of its research and development activities in India and has sales and marketing activities in various countries outside of the United States. Most of these international expenses are incurred in local currency. Foreign currency transaction gains and losses, which are not 2020 2019 2018 2020 2019 2018 not Inventories Inventories are stated at the lower of standard cost or net realizable value. Standard cost approximates actual cost on a first first The Company’s semiconductor products have historically had an unusually long product life cycle and obsolescence has not Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, generally one seven one seven Capitalized Internal-Use Software The Company capitalizes costs related to development of hosted services that the Company provides to its customers and internal use of enterprise-level business and finance software in support of the Company’s operational needs. Costs incurred in the application development phase are capitalized and amortized on a straight-line basis over their useful lives, which are generally five Long-Lived Assets The Company reviews the recoverability of its long-lived assets, such as property and equipment, annually and when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not 2020 2019 2018 January 3, 2021 Licensed Intellectual Property The Company licenses intellectual property that is incorporated into its products. Costs incurred under license agreements prior to the establishment of technological feasibility are included in research and development expense as incurred. Costs incurred for intellectual property once technological feasibility has been established and that can be used in multiple products are capitalized as a long-term asset. Once a product incorporating licensed intellectual property has production sales, the amount is amortized over the estimated useful life of the asset, generally up to five Revenue Recognition The Company recognizes revenue in accordance with ASC Topic No. 606 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; and • Recognition of revenue when, or as, the Company satisfies a performance obligation. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay, or credit risk. For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations. In determining the transaction price, the price stated on the purchase order is typically fixed and represents the net consideration to which the Company expects to be entitled, and therefore there is no one not Product Revenue 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’s contracts with customers are generally for product only, and do not The Company recognizes hardware product revenue at the point of time when control of products is transferred to the customers, when the Company’s performance obligation is satisfied, which typically occurs upon shipment from the Company’s manufacturing site or its headquarters. Intellectual Property and Software License Revenue The Company also generates revenue from licensing their intellectual property or IP, software tools and royalty from licensing its technology. The Company recognizes IP and Software License revenue at the point of time when the control of IP or software license has been transferred. 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. The Company determines 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. Software as a Service Revenue, or SaaS Revenue Software products that are offered to customers with a right to use the hosted software over the contract period without taking the possession of it are billed on a subscription basis. Revenue that are billed on a subscription basis is recognized ratably over the contract period. 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. Deferred Revenue Receivables are recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer. 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. The Company defers the product costs until recognition of the related revenue occurs. 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 none 606 no January 3, 2021 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 (iii) The Company does not one The Company records allowance for sales returns. Amounts recorded for sales returns for the year ended January 3, 2021 December 29, 2019 The Company accounts for its Intellectual Property or IP license revenues and related services in accordance with Financial Accounting Standard Board or FASB Accounting Standards Codification or ASC No. 985 605, Software Revenue Recognition no may not one third not Cost of Revenue The Company records all costs associated with its product sales in cost of revenue. These costs include the cost of materials, contract manufacturing fees, shipping costs and quality assurance. Cost of revenue also includes indirect costs such as warranty, excess and obsolete inventory charges, general overhead costs and depreciation. Accounts Receivable Allowance The Company estimates the amount of uncollectible accounts receivable at the end of each reporting period based on the aging of the receivable balance, current and historical customer trends, and communications with its customers. Amounts are written off only after considerable collection efforts have been made and the amounts are determined to be uncollectible. Warranty Costs The Company warrants finished goods against defects in material and workmanship under normal use for twelve not 606. not not Leases The Company adopted ASU No. 2016 02, Leases (Topic 842 December 31, 2018, no not . Under Topic 842, not 12 ROU assets represent the Company’s right to use an underlying asset during the reasonably certain lease terms and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The Company’s lease terms may In accordance with ASU No. 2016 02, March 31, 2019, no 2020, January 3, 2021 8 Business Combinations The Company recognizes assets acquired (including goodwill and identifiable intangible assets) and liabilities assumed at fair value on the acquisition date. Subsequent changes to the fair value of such assets acquired and liabilities assumed are recognized in earnings, after the expiration of the measurement period, a period not 12 Goodwill and Intangible Assets Goodwill represents the excess fair value of consideration transferred over the fair value of net assets acquired in business combinations. The carrying value of goodwill and indefinite lived intangible assets are not 2019 12 Intangible assets with finite useful lives are amortized on a straight-line basis over the periods benefited. The Company reviews the recoverability of its long-lived assets when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not No Restricted cash Restricted cash represents amounts pledged as cash security related to the Company’s credit cards. Advertising Costs related to advertising and promotion expenditures are charged to “Selling, general and administrative” expense in the consolidated statements of operations as incurred. Costs related to advertising and promotion expenditures were $76,000 in 2020 2019 2018 Stock-Based Compensation The Company accounts for stock-based compensation under the provisions of the amended authoritative guidance, and related interpretations which require the measurement and recognition of expense related to the fair value of stock-based compensation awards. The fair value of stock-based compensation awards is measured at the grant date and re-measured upon modification, as appropriate. The Company uses the Black-Scholes option pricing model to estimate the fair value of employee stock options and rights to purchase shares under the Company’s 1999 13 Accounting for Income Taxes The Company is required to estimate its income taxes in each of the jurisdictions in which the Company operates. This process involves estimating the Company’s actual current tax exposure together with assessing temporary differences resulting from different tax and accounting treatment of items, such as deferred revenue, allowance for doubtful accounts, the impact of equity awards, depreciation and amortization and employee related accruals. These differences result in deferred tax assets and liabilities, which are included on the Company’s balance sheets. The Company must then assess the likelihood that its deferred tax assets will be recovered from future taxable income and to the extent the Company believes that recovery is not Significant management judgment is required in determining the Company’s provision for income taxes, the Company’s deferred tax assets and liabilities and any valuation allowance recorded against the Company's net deferred tax assets. The Company’s deferred tax assets, consisting primarily of net operating loss carryforwards, amounted to $61 million tax effected as of the end of 2020 2020 The Company accounts for uncertainty in income taxes using a two first not second 50% one Concentrations of Credit and Suppliers Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of cash and cash equivalents and accounts receivable. Cash and cash equivalents are maintained with high quality institutions. The Company’s accounts receivables are denominated in U.S. dollars and are derived primarily from sales to customers located in North America, Europe and Asia Pacific. The Company performs ongoing credit evaluations of its customers and generally does not 14 The Company depends on a limited number of contract manufacturers, subcontractors, and suppliers for wafer fabrication, assembly, programming and test of its devices, and for the supply of programming equipment, and these services are typically provided by one Comprehensive Income (Loss) Comprehensive income (loss) includes all temporary changes in equity (net assets) during a period from non-owner sources. The Company’s comprehensive loss equaled to net loss for all periods presented. Recently Adopted New Accounting Pronouncements: In August 2018, No. 2018 13, Fair Value Measurement (Topic 820 January 1, 2020. December 30, 2019 no In August 2018, No. 2018 15, Intangibles - Goodwill and Other Internal-Use Software (Subtopic 350 40 Customer s Accounting for Implementations Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. December 15, 2019, December 30, 2019 no In June 2016, No. 2016 13 2016 13” Financial Instruments-Credit Losses (Topic 326 Measurement of Credit Losses on Financial Instruments 2016 13 2016 13 December 30, 2019 no New Accounting Pronouncements In December 2019, No. 2019 12, Simplifying the Accounting for Income Taxes 740, 1 2 3 December 15, 2020. 2019 12, January 4, 2021, not In August 2020, No. 2020 06, Debt—Debt with Conversion and Other Options (Subtopic 470 20 815 40 December 15, 2021, not No. 2020 06

Note 3 - Net Loss Per Share

Note 3 - Net Loss Per Share	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Earnings Per Share [Text Block]	NOTE 3 Basic net 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 2020 2019 2018 2009 not May 29, 2018 not January 3, 2021 December 29, 2019 On December 6, 2019, 1 December 23, 2019. November 26, 2019.

Note 4 - Balance Sheet Componen

Note 4 - Balance Sheet Components	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Supplemental Balance Sheet Disclosures [Text Block]	NOTE 4 January 3, December 29, 2021 2019 (in thousands) Inventories: Raw material $ 191 $ 222 Work-in-process 1,842 2,370 Finished goods 655 668 $ 2,688 $ 3,260 Other current assets: Prepaid expenses $ 884 $ 1,296 Other 182 269 $ 1,066 $ 1,565 Property and equipment: Equipment $ 10,471 $ 10,694 Software 1,783 1,789 Furniture and fixtures 33 36 Leasehold improvements 466 474 12,753 12,993 Accumulated depreciation and amortization (12,205 ) (12,163 ) $ 548 $ 830 Capitalized internal-use software: Capitalized software held for internal use $ 1,166 $ 365 Accumulated amortization (180 ) (32 ) $ 986 $ 333 Accrued liabilities: Employee compensation related accruals 762 713 Other 578 420 $ 1,340 $ 1,133 The Company recorded depreciation and amortization expense of $817,000, $1.2 million and $1.3 million for the fiscal years 2020 2019 2018 2020 2019

Note 5 - Business Acquisition

Note 5 - Business Acquisition	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Business Combination Disclosure [Text Block]	NOTE 5 SensiML Acquisition On January 3, 2019, SensiML has a software toolkit enabling IoT developers to quickly and easily create smart devices, transforming rich sensors into actionable event detectors. SensiML’s Analytics Toolkit is an end-to-end software suite that provides OEMs a straightforward process for developing pattern matching sensor algorithms using machine learning technology that are optimized for ultra-low power consumption. The SensiML Analytics Toolkit enables OEMs to quickly and easily leverage the power of local AI in edge, endpoint and wearable designs without the need for significant Data Science or Firmware Engineering resources. The results of operations for the Company for the fiscal year ended January 3, 2021 January 3, 2019. January 3, 2021 December 29, 2019 January 3, 2021 December 29, 2019 2019. Purchase Price Allocation Under the purchase accounting method, the total purchase price was allocated to SensiML’s net tangible and intangible assets based upon their estimated fair values as of the acquisition date. The excess purchase price over the value of the net tangible and identified intangible assets was recorded as goodwill. During the measurement period, which can be no one 2019 Intangible assets associated with the acquisition is primarily attributable to the future technology, market presence and knowledgeable and experienced workforce. The fair value assigned to identifiable intangible assets acquired was determined using the income approach taking into account the Company’s consideration of a number of inputs, including an independent third not not The Stock Purchase Agreement contains customary representations and warranties between the Company and SensiML, who agreed to indemnify each other for certain breaches of representations, warranties, covenants and other specified matters. Approximately $200,000 in value of the Company’s common stock of the purchase price was placed in escrow as security for post-closing working capital adjustments, which expired on January 2, 2020.

Note 6 - Intangible Assets

Note 6 - Intangible Assets	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Intangible Assets Disclosure [Text Block]	NOTE 6 The following table provides the details of the carrying value of intangible assets recorded from the acquisition of SensiML as of January 3, 2021 January 3, 2021 Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology 10 $ 959 $ (192 ) $ 767 Customer relationships 2 81 (81 ) — Trade names and trade marks 10 116 (23 ) 93 Total acquired identifiable intangible assets $ 1,156 $ (296 ) $ 860 The following table provides the details of the carrying value of intangible assets recorded from the acquisition of SensiML as of December 29, 2019 December 29, 2019 Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology 10 $ 959 $ (96 ) $ 863 Customer relationships 2 81 (40 ) 41 Trade names and trade marks 10 116 (12 ) 104 Total acquired identifiable intangible assets $ 1,156 $ (148 ) $ 1,008 The following table provides the details of future annual amortization of intangible assets, based upon the current useful lives as of January 3, 2021 Amount Annual Fiscal Years 2021 107 2022 107 2023 107 2024 107 2025 107 Thereafter 325 Total $ 860

Note 7 - Debt Obligations

Note 7 - Debt Obligations	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Debt and Capital Leases Disclosures [Text Block]	NOTE 7 Revolving Line of Credit On September 28, 2018, On December 21, 2018, $9.0 On November 6, 2019 one September 28, 2021. one one five one one On December 11, 2020, one September 28, 2022 one one As of January 3, 2021 December 29, 2019 The Bank has a first Payroll Protection Program Loan On May 6, 2020, The PPP Loan is evidenced by a promissory note (“Note”) dated May 6, 2020, two first six six may no may fourth 2020, January 26, 2021, 16,

Note 8 - Leases

Note 8 - Leases	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Lessee, Operating and Finance Leases [Text Block]	NOTE 8 The Company entered into operating leases for office space for its headquarters, domestic and foreign subsidiaries and sales offices. Finance leases are primarily for engineering design software. Operating leases generally have lease terms of 1 year to 5 years. Finance leases are generally 2 years to 3 years. For the year ended January 3, 2021 December 29, 2019 In October 2018, July 2020. not On February 13, 2019, 2220 95131 five April 15, 2019 In April 2019, March 2021. The Company leases a 9,400 square foot facility in Bangalore, India for the purpose of software development, which is leased through June 2021. July 10, 2020, 2020 9,400 December 2020 January 3, 2021 In addition, the Company rents sales offices in Europe and Asia. Total rent expense during 2020 2019 2018 The following table provides the activity related to operating and finance leases (in thousands): Fiscal Year Ended Fiscal Year Ended January 3, 2021 December 29, 2019 Operating lease costs: Fixed $ 473 $ 757 Variable — — Short term 20 40 Total 493 797 Finance lease costs: Amortization of ROU asset 315 388 Interest 38 18 Total $ 353 $ 406 The following table provides the details of supplemental cash flow information (in thousands): Fiscal Year Ended Fiscal Year Ended January 3, 2021 December 29, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 497 $ 791 Operating cash flows used for finance leases 38 24 Financing cash flows used for financing leases 270 365 Total $ 805 $ 1,180 Right-of-use assets obtained in exchange for obligations: Operating leases $ — $ 2,200 Finance leases 914 170 Total $ 914 $ 2,370 The following table provides the details of right-of-use assets and lease liabilities as of January 3, 2021 January 3, 2021 December 29, 2019 Right-of-use assets: Operating leases $ 1,134 $ 2,200 Finance leases 705 170 Total $ 1,839 $ 2,370 Lease liabilities: Operating leases 1,212 1,816 Finance leases 670 471 Total $ 1,882 $ 2,287 The following table provides the details of future lease payments for operating and finance leases as of January 3, 2021 Annual Fiscal Years Operating Finance 2021 $ 402 $ 375 2022 409 335 2023 422 — 2024 106 — Total lease payments 1,339 710 Less: Interest (127 ) (40 ) Present value of lease liabilities $ 1,212 $ 670 The following table provides the details of lease terms and discount rates as of January 3, 2021 January 3, 2021 Right-of-use assets: Weighted-average remaining lease term (years) Operating leases 3.24 Finance leases 2.21 Weighted-average discount rates: Operating leases 6.00 % Finance leases 5.50 %

Note 9 - Fair Value Measurement

Note 9 - Fair Value Measurements	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Fair Value Disclosures [Text Block]	NOTE 9 Pursuant to the accounting guidance for fair value measurements and its subsequent updates, fair value is defined as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities required or permitted to be recorded at fair value, the Company considers the principal or most advantageous market and it considers assumptions that market participants would use when pricing the asset or liability. The accounting guidance for fair value measurement also specifies a hierarchy of valuation techniques based upon whether the inputs to those valuation techniques reflect assumptions other market participants would use based upon market data obtained from independent sources (observable inputs) or reflect the Company’s own assumption of market participant valuation (unobservable inputs). The fair value hierarchy consists of the following three • Level 1 • Level 2 not • Level 3 one Our cash and cash equivalents include money market account balances of $22.0 million and $20.9 million as of January 3, 2021 December 29, 2019 1

Note 10 - Income Taxes

Note 10 - Income Taxes	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Income Tax Disclosure [Text Block]	NOTE 10 The following table presents the U.S. and foreign components of consolidated loss before income taxes and the provision for (benefit from) income taxes (in thousands): Fiscal Years 2020 2019 2018 Loss before income taxes: U.S. $ (11,170 ) $ (15,813 ) $ (13,982 ) Foreign 70 289 355 Loss before income taxes $ (11,100 ) $ (15,524 ) $ (13,627 ) Provision for (benefit from) income taxes: Current: Federal $ — $ — $ (19 ) State 3 3 2 Foreign 39 108 169 Subtotal 42 111 152 Deferred: Federal — (141 ) — State — (44 ) — Foreign 9 (6 ) — Subtotal 9 (191 ) — Provision for (benefit from) income taxes $ 51 $ (80 ) $ 152 The following table presents the rate reconciliation between income tax provisions at the U.S. federal statutory rate and the effective rate reflected in the consolidated statements of operations: Fiscal Years 2020 2019 2018 Income tax (benefit) at statutory rate $ (2,331 ) $ (3,260 ) $ (2,862 ) State taxes 3 (42 ) 2 Stock compensation and other permanent differences 99 187 252 Foreign taxes 34 42 95 Future benefit of deferred tax assets not recognized 2,246 3,133 2,684 Other — (140 ) (19 ) Provision for (benefit from) income taxes $ 51 $ (80 ) $ 152 Based on the available objective evidence, management believes it is more likely than not not January 3, 2021 may not January 3, December 29, 2021 2019 Deferred tax assets: Net operating losses $ 43,703 $ 40,717 Accruals and reserves 1,239 1,345 Credits carryforward 5,860 5,765 Depreciation and amortization 9,240 9,760 Stock-based compensation 485 637 Operating lease liability 469 529 Gross deferred tax assets 60,996 58,753 Deferred tax liabilities: Right-of-use asset (458 ) (552 ) Gross deferred tax assets (458 ) (552 ) Net deferred tax assets 60,538 58,201 Valuation allowance (60,486 ) (58,140 ) Total deferred tax asset $ 52 $ 61 As of January 3, 2021 not January 1, 2018 2021 2038, January 1, 2018 not 2021 2040. The Company has research credit carryforwards of approximately $4.1 million for federal and $4.6 million for state income tax purposes as of January 3, 2021 not 2021. The Tax Cuts and Jobs Act (the "TCJA") was enacted on December 22, 2017. one December 2017, No. 118 118” 118 not one 740, 740” 118, no 2018 fourth Events which may not 382 may The Company has not may Foreign withholding taxes associated with the repatriation of earnings of foreign subsidiaries were not 2020 not not Uncertain Tax Positions A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands): January 3, December 29, December 30, 2021 2019 2018 Beginning balance of unrecognized tax benefits $ 2,117 $ 2,161 $ 2,107 Additions (subtractions) for tax positions related to the prior year 38 (46 ) (2 ) Additions for tax positions related to the current year 114 88 125 Lapse of statutes of limitations (93 ) (86 ) (69 ) Ending balance of unrecognized tax benefits $ 2,176 $ 2,117 $ 2,161 Out of $2.2 million of unrecognized tax benefits, there are no unrecognized tax benefits that would result in a change in the Company's effective tax rate if recognized in future years. The accrued interest and penalties related to uncertain tax positions was not January 3, 2021 December 29, 2019 December 30, 2018 On March 27, 2020, The Company is not may not twelve 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 1999

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Stockholders' Equity Note Disclosure [Text Block]	NOTE 11 Common and Preferred Stock As of January 3, 2021 Reverse Stock Split On December 6, 2019, 1 December 23, 2019. November 26, 2019. 14 one 10 May 2018 Issuance of Common Stock On June 22, 2020, 30 July 21, 2020 On June 21, 2019, third 2019. On March 15, 2019, 3, may, one March 29, 2019. In May 2018, one The warrants are exercisable any time for a period of 60 months from the date of issuance on May 29, 2018, zero As of January 3, 2021,

Note 12 - Employee Stock Plans

Note 12 - Employee Stock Plans	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Disclosure of Employee Stock Ownership Plans [Text Block]	NOTE 12 2009 The 2009 2009 January 2015, February 2017, March 15, 2018 April 23, 2015, April 26, 2017 April 25, 2018 2009 April 24, 2019, 2009 2019 ten March 15, 2028. 2009 April 24, 2019. 2019 On April 24, 2019, 2019 2019 2009 2009 2019 2009 January 3, 2021 2019 Options typically vest at a rate of 25% one one forty eighth one one eighth six may Employee Stock Purchase Plan The 2009 2009 March 2009. 2009 January 2015 February 2017, April 23, 2015 April 26, 2017, 2009 On May 6, 2019, 2009 March 5, 2029, 12 2009 As of January 3, 2021 2009 2009 six 2009 85% 85%

Note 13 - Stock-based Compensat

Note 13 - Stock-based Compensation	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Share-based Payment Arrangement [Text Block]	NOTE 13 The Company provides stock-based incentive compensation, or awards, to eligible employees and non-employee directors. Awards that may four ten Stock-based compensation expense is recognized in the Company’s consolidated statements of operations and includes compensation expense for the stock-based compensation awards granted or modified subsequent to January 1, 2006, 2020 2019 2018 Fiscal Years 2020 2019 2018 Cost of revenue $ 162 $ 78 $ 129 Research and development 670 2,242 760 Selling, general and administrative 907 824 1,012 Total costs and expenses $ 1,739 $ 3,144 $ 1,901 No stock-based compensation was capitalized or included in inventories at the end of 2020 2019 2018 Stock-Based Compensation Award Activity The following table summarizes the shares available for grant under the 2019 Shares Available for Grant Balance at December 29, 2019 272 Authorized 550 Options granted — Options forfeited or expired 65 RSUs granted (816 ) RSUs forfeited 249 Balance at January 3, 2021 320 Stock Options The following table summarizes stock options outstanding and stock option activity under the 2019 2020 2019 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 254 $ 29.26 4.34 Granted — — Forfeited or expired (10 ) 25.20 Exercised (15 ) 12.60 Balance outstanding at December 30, 2018 229 30.52 3.70 Granted — — Forfeited or expired (42 ) 24.14 Exercised (1 ) 10.92 Balance outstanding at December 29, 2019 186 32.09 3.32 Granted — — Forfeited or expired (65 ) 38.83 Exercised — — Balance outstanding at January 3, 2021 121 $ 28.46 3.75 $ — Exercisable and Vested and expected to vest at January 3, 2021 121 $ 28.46 3.75 $ — There was no intrinsic value for the stock options, based on the Company’s closing stock price of $3.79 per share as of the end of the Company’s current reporting period, 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 2020 2019 2018 not 2020 2019 2018 no Total stock-based compensation expense recognized related to stock options was $39,000, $117,000, and $131,000 for 2020 2019 2018 No 2020 2019 2018 2020 Significant exercise price ranges of options outstanding, related weighted average exercise prices and contractual life information at the end of 2020 Options Outstanding Options Exercisable Range of Exercise Prices Options Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Options Vested and Exercisable Weighted Average Exercise Price (in thousands) (in years) (in thousands) $12.05 52 5.68 $ 12.05 52 $ 12.05 $18.48 - $31.50 14 2.82 26.71 14 26.71 $32.20 3 2.34 32.2 3 32.20 $38.92 14 0.85 38.92 14 38.92 $39.48 - $44.94 9 2.76 42.94 9 42.91 $46.62 3 3.34 46.62 3 46.62 $47.46 14 2.94 47.46 14 47.46 $48.72 8 1.35 48.72 8 48.72 $53.48 4 3.38 53.48 4 53.48 $12.05- $53.48 121 3.75 $ 28.46 121 $ 28.46 Valuation Assumptions The Company uses the Black-Scholes option pricing model to estimate the fair value of employee stock options and rights to purchase shares under the Company’s 2009 In addition to the assumptions used in the Black-Scholes pricing model, the amended authoritative guidance requires that the Company recognize expense for awards ultimately expected to vest; therefore, the Company is required to develop an estimate of the number of awards expected to be forfeited prior to vesting, or forfeiture rate. The forfeiture rate is estimated based on historical pre-vest cancellation experience and is applied to all share-based awards. No stock options were granted during the years 2020 2019 2018 Restricted Stock Units The Company grants restricted stock units, or RSUs, to employees with various vesting terms. RSUs entitle the holder to receive, at no one 2020 2019 2018 The following table summarizes RSU’s activity under the 2019 2020 2019 2018 RSUs & PRSUs Outstanding Number of Shares Weighted Average Grant Date Fair Value (in thousands) Nonvested at December 31, 2017 168 $ 21.56 Granted 110 11.90 Vested (77 ) 19.18 Forfeited (18 ) — Nonvested at December 30, 2018 183 17.22 Granted 353 10.77 Vested (118 ) 14.48 Forfeited (41 ) — Nonvested at December 29, 2019 377 $ 12.55 Granted 816 3.97 Vested (144 ) 10.41 Forfeited (249 ) 7.93 Nonvested at January 3, 2021 800 $ 4.99 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 ESPP during 2020 2019 2018 2020 2019 2018 As of January 3, 2021 2009 2020 2019 2018 The fair value of rights issued pursuant to the Company’s ESPP was estimated on the commencement date of each offering period using the following weighted average assumptions: Fiscal Years 2020 2019 2018 Expected life (months) 6.0 6.0 6.0 Risk-free interest rate 0.12 % 2.37 % 2.26 % Volatility 82 % 54 % 50 % Dividend yield — — — The methodologies for determining the above values were as follows: • Expected term: The expected term represents the length of the purchase period contained in the ESPP. • Risk-free interest rate: The risk-free interest rate assumption is based upon the risk-free rate of a Treasury Constant Maturity bond with a maturity appropriate for the term of the purchase period. • Volatility: The Company determines expected volatility based on historical volatility of the Company’s common stock for the term of the purchase period. • Dividend Yield: The expected dividend assumption is based on the Company’s intent not

Note 14 - Information Concernin

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Segment Reporting Disclosure [Text Block]	NOTE 14 The Company identifies its business segments 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 family (in thousands): Fiscal Years 2020 2019 2018 Revenue by product line (1) : New products $ 2,782 $ 3,123 $ 5,735 Mature products 5,852 7,187 6,894 Total revenue $ 8,634 $ 10,310 $ 12,629 ( 1 New products include all products manufactured on 180 180 The following is a breakdown of revenue by shipment destination (in thousands): Fiscal Years 2020 2019 2018 Revenue by geography: Asia Pacific (1) $ 2,096 $ 3,049 $ 4,905 Europe 1,501 2,459 1,280 North America (2) 5,037 4,802 6,444 Total revenue $ 8,634 $ 10,310 $ 12,629 ( 1 Asia Pacific includes revenue from Japan of $2.0 million or 23% of total revenue in 2020 2019 2018 ( 2 North America includes revenue from the United States of $5.0 million or 58% of total revenue in 2020 2019 2018 The following distributors and customers accounted for 10% Fiscal Years 2020 2019 2018 Distributor "A" 24 % 40 % 34 % Distributor "C" 15 % 13 % * Distributor "E" 19 % * * Customer "B" 10 % 13 % 12 % Customer "E" * 10 % * Customer "F" 19 % * * Customer "G" * * 10 % Customer "J" * * 10 % Customer "M" 16 % * * Note: the amounts related to Distributor in the above table represent sales-in only to those distributors, and Customer information relates to sales out information. As such, sales to a Distributor, may The following distributors and customers accounted for 10% January 3, December 29, 2021 2019 Distributor "A" * 20 % Distributor "C" * 23 % Distributor "E" * 12 % Distributor "J" * 31 % Customer "P" 67 % * Customer "Q" 10 % * As of January 3, 2021 December 29, 2019

Note 15 - Commitments and Conti

Note 15 - Commitments and Contingencies	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Commitments Disclosure [Text Block]	NOTE 15 Commitments Certain wafer manufacturers require the Company to forecast wafer starts several months in advance. The Company is committed to take delivery of and pay for a portion of forecasted wafer volume. As of the end of 2020 2019 The Company has purchase obligations with certain suppliers for the purchase of goods and services entered into in the ordinary course of business. As of January 3, 2021 twelve Litigation From time to time, the Company may not third not may

Note 16 - Subsequent Events

Note 16 - Subsequent Events	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 16 Payroll Protection Program Loan On May 6, 2020, The Company applied for loan forgiveness in the fourth 2020, January 26, 2021, first April 4, 2021. India Transfer Pricing notice On January 27, 2021, 2017 18, may not may

Schedule II - Valuation and Qua

Schedule II - Valuation and Qualifying Accounts	12 Months Ended
	Jan. 03, 2021
Notes to Financial Statements
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]	QuickLogic Corporation Valuation and Qualifying Accounts (in thousands) Allowance for Deferred Tax Assets: Fiscal Year 2020 $ 58,140 $ 2,398 $ — $ 60,538 Fiscal Year 2019 $ 54,913 $ 3,227 $ — $ 58,140 Fiscal Year 2018 $ 55,931 $ — $ (1,018 ) $ 54,913

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Jan. 03, 2021
Accounting Policies [Abstract]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash Equivalents The Company considers all short-term, highly liquid investments with an original or a remaining maturity at purchase of ninety
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value The guidance for the fair value option for financial assets and financial liabilities provides companies the irrevocable option to measure many financial assets and liabilities at fair value with changes in fair value recognized in earnings or equity. The Company has not not
Foreign Currency Transactions and Translations Policy [Policy Text Block]	Foreign Currency Transactions All of the Company’s sales and cost of manufacturing are transacted in U.S. dollars. The Company conducts a portion of its research and development activities in India and has sales and marketing activities in various countries outside of the United States. Most of these international expenses are incurred in local currency. Foreign currency transaction gains and losses, which are not 2020 2019 2018 2020 2019 2018 not
Inventory, Policy [Policy Text Block]	Inventories Inventories are stated at the lower of standard cost or net realizable value. Standard cost approximates actual cost on a first first The Company’s semiconductor products have historically had an unusually long product life cycle and obsolescence has not
Property, Plant and Equipment, Policy [Policy Text Block]	Property and Equipment Property and equipment are stated at cost less accumulated depreciation and amortization. Depreciation is calculated on a straight-line basis over the estimated useful lives of the assets, generally one seven one seven Capitalized Internal-Use Software The Company capitalizes costs related to development of hosted services that the Company provides to its customers and internal use of enterprise-level business and finance software in support of the Company’s operational needs. Costs incurred in the application development phase are capitalized and amortized on a straight-line basis over their useful lives, which are generally five Long-Lived Assets The Company reviews the recoverability of its long-lived assets, such as property and equipment, annually and when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not 2020 2019 2018 January 3, 2021
Intangible Assets, Finite-Lived, Policy [Policy Text Block]	Licensed Intellectual Property The Company licenses intellectual property that is incorporated into its products. Costs incurred under license agreements prior to the establishment of technological feasibility are included in research and development expense as incurred. Costs incurred for intellectual property once technological feasibility has been established and that can be used in multiple products are capitalized as a long-term asset. Once a product incorporating licensed intellectual property has production sales, the amount is amortized over the estimated useful life of the asset, generally up to five
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition The Company recognizes revenue in accordance with ASC Topic No. 606 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; and • Recognition of revenue when, or as, the Company satisfies a performance obligation. As part of its assessment of each contract, the Company evaluates certain factors including the customer’s ability to pay, or credit risk. For each contract, the Company considers the promise to transfer products, each of which is distinct, to be the identified performance obligations. In determining the transaction price, the price stated on the purchase order is typically fixed and represents the net consideration to which the Company expects to be entitled, and therefore there is no one not Product Revenue 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’s contracts with customers are generally for product only, and do not The Company recognizes hardware product revenue at the point of time when control of products is transferred to the customers, when the Company’s performance obligation is satisfied, which typically occurs upon shipment from the Company’s manufacturing site or its headquarters. Intellectual Property and Software License Revenue The Company also generates revenue from licensing their intellectual property or IP, software tools and royalty from licensing its technology. The Company recognizes IP and Software License revenue at the point of time when the control of IP or software license has been transferred. 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. The Company determines 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. Software as a Service Revenue, or SaaS Revenue Software products that are offered to customers with a right to use the hosted software over the contract period without taking the possession of it are billed on a subscription basis. Revenue that are billed on a subscription basis is recognized ratably over the contract period. 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. Deferred Revenue Receivables are recognized in the period the Company ships the product. Payment terms on invoiced amounts are based on contractual terms with each customer. 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. The Company defers the product costs until recognition of the related revenue occurs. 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 none 606 no January 3, 2021 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 (iii) The Company does not one The Company records allowance for sales returns. Amounts recorded for sales returns for the year ended January 3, 2021 December 29, 2019 The Company accounts for its Intellectual Property or IP license revenues and related services in accordance with Financial Accounting Standard Board or FASB Accounting Standards Codification or ASC No. 985 605, Software Revenue Recognition no may not one third not Cost of Revenue The Company records all costs associated with its product sales in cost of revenue. These costs include the cost of materials, contract manufacturing fees, shipping costs and quality assurance. Cost of revenue also includes indirect costs such as warranty, excess and obsolete inventory charges, general overhead costs and depreciation.
Accounts Receivable [Policy Text Block]	Accounts Receivable Allowance The Company estimates the amount of uncollectible accounts receivable at the end of each reporting period based on the aging of the receivable balance, current and historical customer trends, and communications with its customers. Amounts are written off only after considerable collection efforts have been made and the amounts are determined to be uncollectible.
Standard Product Warranty, Policy [Policy Text Block]	Warranty Costs The Company warrants finished goods against defects in material and workmanship under normal use for twelve not 606. not not
Lessee, Leases [Policy Text Block]	Leases The Company adopted ASU No. 2016 02, Leases (Topic 842 December 31, 2018, no not . Under Topic 842, not 12 ROU assets represent the Company’s right to use an underlying asset during the reasonably certain lease terms and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. The Company’s lease terms may In accordance with ASU No. 2016 02, March 31, 2019, no 2020, January 3, 2021 8
Business Combinations Policy [Policy Text Block]	Business Combinations The Company recognizes assets acquired (including goodwill and identifiable intangible assets) and liabilities assumed at fair value on the acquisition date. Subsequent changes to the fair value of such assets acquired and liabilities assumed are recognized in earnings, after the expiration of the measurement period, a period not 12
Goodwill and Intangible Assets, Policy [Policy Text Block]	Goodwill and Intangible Assets Goodwill represents the excess fair value of consideration transferred over the fair value of net assets acquired in business combinations. The carrying value of goodwill and indefinite lived intangible assets are not 2019 12 Intangible assets with finite useful lives are amortized on a straight-line basis over the periods benefited. The Company reviews the recoverability of its long-lived assets when events or changes in circumstances occur that indicate that the carrying value of the asset or asset group may not No
Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]	Restricted cash Restricted cash represents amounts pledged as cash security related to the Company’s credit cards.
Advertising Cost [Policy Text Block]	Advertising Costs related to advertising and promotion expenditures are charged to “Selling, general and administrative” expense in the consolidated statements of operations as incurred. Costs related to advertising and promotion expenditures were $76,000 in 2020 2019 2018
Share-based Payment Arrangement [Policy Text Block]	Stock-Based Compensation The Company accounts for stock-based compensation under the provisions of the amended authoritative guidance, and related interpretations which require the measurement and recognition of expense related to the fair value of stock-based compensation awards. The fair value of stock-based compensation awards is measured at the grant date and re-measured upon modification, as appropriate. The Company uses the Black-Scholes option pricing model to estimate the fair value of employee stock options and rights to purchase shares under the Company’s 1999 13
Income Tax, Policy [Policy Text Block]	Accounting for Income Taxes The Company is required to estimate its income taxes in each of the jurisdictions in which the Company operates. This process involves estimating the Company’s actual current tax exposure together with assessing temporary differences resulting from different tax and accounting treatment of items, such as deferred revenue, allowance for doubtful accounts, the impact of equity awards, depreciation and amortization and employee related accruals. These differences result in deferred tax assets and liabilities, which are included on the Company’s balance sheets. The Company must then assess the likelihood that its deferred tax assets will be recovered from future taxable income and to the extent the Company believes that recovery is not Significant management judgment is required in determining the Company’s provision for income taxes, the Company’s deferred tax assets and liabilities and any valuation allowance recorded against the Company's net deferred tax assets. The Company’s deferred tax assets, consisting primarily of net operating loss carryforwards, amounted to $61 million tax effected as of the end of 2020 2020 The Company accounts for uncertainty in income taxes using a two first not second 50% one
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentrations of Credit and Suppliers Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of cash and cash equivalents and accounts receivable. Cash and cash equivalents are maintained with high quality institutions. The Company’s accounts receivables are denominated in U.S. dollars and are derived primarily from sales to customers located in North America, Europe and Asia Pacific. The Company performs ongoing credit evaluations of its customers and generally does not 14 The Company depends on a limited number of contract manufacturers, subcontractors, and suppliers for wafer fabrication, assembly, programming and test of its devices, and for the supply of programming equipment, and these services are typically provided by one
Comprehensive Income, Policy [Policy Text Block]	Comprehensive Income (Loss) Comprehensive income (loss) includes all temporary changes in equity (net assets) during a period from non-owner sources. The Company’s comprehensive loss equaled to net loss for all periods presented.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted New Accounting Pronouncements: In August 2018, No. 2018 13, Fair Value Measurement (Topic 820 January 1, 2020. December 30, 2019 no In August 2018, No. 2018 15, Intangibles - Goodwill and Other Internal-Use Software (Subtopic 350 40 Customer s Accounting for Implementations Costs Incurred in a Cloud Computing Arrangement That is a Service Contract. December 15, 2019, December 30, 2019 no In June 2016, No. 2016 13 2016 13” Financial Instruments-Credit Losses (Topic 326 Measurement of Credit Losses on Financial Instruments 2016 13 2016 13 December 30, 2019 no New Accounting Pronouncements In December 2019, No. 2019 12, Simplifying the Accounting for Income Taxes 740, 1 2 3 December 15, 2020. 2019 12, January 4, 2021, not In August 2020, No. 2020 06, Debt—Debt with Conversion and Other Options (Subtopic 470 20 815 40 December 15, 2021, not No. 2020 06

Note 4 - Balance Sheet Compon_2

Note 4 - Balance Sheet Components (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Condensed Balance Sheet [Table Text Block]	January 3, December 29, 2021 2019 (in thousands) Inventories: Raw material $ 191 $ 222 Work-in-process 1,842 2,370 Finished goods 655 668 $ 2,688 $ 3,260 Other current assets: Prepaid expenses $ 884 $ 1,296 Other 182 269 $ 1,066 $ 1,565 Property and equipment: Equipment $ 10,471 $ 10,694 Software 1,783 1,789 Furniture and fixtures 33 36 Leasehold improvements 466 474 12,753 12,993 Accumulated depreciation and amortization (12,205 ) (12,163 ) $ 548 $ 830 Capitalized internal-use software: Capitalized software held for internal use $ 1,166 $ 365 Accumulated amortization (180 ) (32 ) $ 986 $ 333 Accrued liabilities: Employee compensation related accruals 762 713 Other 578 420 $ 1,340 $ 1,133

Note 6 - Intangible Assets (Tab

Note 6 - Intangible Assets (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Amount Annual Fiscal Years 2021 107 2022 107 2023 107 2024 107 2025 107 Thereafter 325 Total $ 860
Sensi ML [Member]
Notes Tables
Schedule of Finite-Lived Intangible Assets [Table Text Block]	January 3, 2021 Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology 10 $ 959 $ (192 ) $ 767 Customer relationships 2 81 (81 ) — Trade names and trade marks 10 116 (23 ) 93 Total acquired identifiable intangible assets $ 1,156 $ (296 ) $ 860 December 29, 2019 Useful Life Gross Carrying Amount Accumulated Amortization Net Carrying Amount Developed technology 10 $ 959 $ (96 ) $ 863 Customer relationships 2 81 (40 ) 41 Trade names and trade marks 10 116 (12 ) 104 Total acquired identifiable intangible assets $ 1,156 $ (148 ) $ 1,008

Note 8 - Leases (Tables)

Note 8 - Leases (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Lease, Cost [Table Text Block]	Fiscal Year Ended Fiscal Year Ended January 3, 2021 December 29, 2019 Operating lease costs: Fixed $ 473 $ 757 Variable — — Short term 20 40 Total 493 797 Finance lease costs: Amortization of ROU asset 315 388 Interest 38 18 Total $ 353 $ 406
Lessee, Leases, Supplemental Cash Flow Information [Table Text Block]	Fiscal Year Ended Fiscal Year Ended January 3, 2021 December 29, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows used for operating leases $ 497 $ 791 Operating cash flows used for finance leases 38 24 Financing cash flows used for financing leases 270 365 Total $ 805 $ 1,180 Right-of-use assets obtained in exchange for obligations: Operating leases $ — $ 2,200 Finance leases 914 170 Total $ 914 $ 2,370
Schedule of Right of Use Assets and Lease Liabilities [Table Text Block]	January 3, 2021 December 29, 2019 Right-of-use assets: Operating leases $ 1,134 $ 2,200 Finance leases 705 170 Total $ 1,839 $ 2,370 Lease liabilities: Operating leases 1,212 1,816 Finance leases 670 471 Total $ 1,882 $ 2,287
Schedule of Future Lease Payments for Leases [Table Text Block]	Annual Fiscal Years Operating Finance 2021 $ 402 $ 375 2022 409 335 2023 422 — 2024 106 — Total lease payments 1,339 710 Less: Interest (127 ) (40 ) Present value of lease liabilities $ 1,212 $ 670
Schedule of Lease Terms and Weighted Average Discount Rate [Table Text Block]	January 3, 2021 Right-of-use assets: Weighted-average remaining lease term (years) Operating leases 3.24 Finance leases 2.21 Weighted-average discount rates: Operating leases 6.00 % Finance leases 5.50 %

Note 10 - Income Taxes (Tables)

Note 10 - Income Taxes (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	Fiscal Years 2020 2019 2018 Loss before income taxes: U.S. $ (11,170 ) $ (15,813 ) $ (13,982 ) Foreign 70 289 355 Loss before income taxes $ (11,100 ) $ (15,524 ) $ (13,627 ) Provision for (benefit from) income taxes: Current: Federal $ — $ — $ (19 ) State 3 3 2 Foreign 39 108 169 Subtotal 42 111 152 Deferred: Federal — (141 ) — State — (44 ) — Foreign 9 (6 ) — Subtotal 9 (191 ) — Provision for (benefit from) income taxes $ 51 $ (80 ) $ 152
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	Fiscal Years 2020 2019 2018 Income tax (benefit) at statutory rate $ (2,331 ) $ (3,260 ) $ (2,862 ) State taxes 3 (42 ) 2 Stock compensation and other permanent differences 99 187 252 Foreign taxes 34 42 95 Future benefit of deferred tax assets not recognized 2,246 3,133 2,684 Other — (140 ) (19 ) Provision for (benefit from) income taxes $ 51 $ (80 ) $ 152
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]	January 3, December 29, 2021 2019 Deferred tax assets: Net operating losses $ 43,703 $ 40,717 Accruals and reserves 1,239 1,345 Credits carryforward 5,860 5,765 Depreciation and amortization 9,240 9,760 Stock-based compensation 485 637 Operating lease liability 469 529 Gross deferred tax assets 60,996 58,753 Deferred tax liabilities: Right-of-use asset (458 ) (552 ) Gross deferred tax assets (458 ) (552 ) Net deferred tax assets 60,538 58,201 Valuation allowance (60,486 ) (58,140 ) Total deferred tax asset $ 52 $ 61
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]	January 3, December 29, December 30, 2021 2019 2018 Beginning balance of unrecognized tax benefits $ 2,117 $ 2,161 $ 2,107 Additions (subtractions) for tax positions related to the prior year 38 (46 ) (2 ) Additions for tax positions related to the current year 114 88 125 Lapse of statutes of limitations (93 ) (86 ) (69 ) Ending balance of unrecognized tax benefits $ 2,176 $ 2,117 $ 2,161

Note 13 - Stock-based Compens_2

Note 13 - Stock-based Compensation (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]	Fiscal Years 2020 2019 2018 Cost of revenue $ 162 $ 78 $ 129 Research and development 670 2,242 760 Selling, general and administrative 907 824 1,012 Total costs and expenses $ 1,739 $ 3,144 $ 1,901
Share-based Payment Arrangement, Activity [Table Text Block]	Shares Available for Grant Balance at December 29, 2019 272 Authorized 550 Options granted — Options forfeited or expired 65 RSUs granted (816 ) RSUs forfeited 249 Balance at January 3, 2021 320
Share-based Payment Arrangement, Option, Activity [Table Text Block]	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 254 $ 29.26 4.34 Granted — — Forfeited or expired (10 ) 25.20 Exercised (15 ) 12.60 Balance outstanding at December 30, 2018 229 30.52 3.70 Granted — — Forfeited or expired (42 ) 24.14 Exercised (1 ) 10.92 Balance outstanding at December 29, 2019 186 32.09 3.32 Granted — — Forfeited or expired (65 ) 38.83 Exercised — — Balance outstanding at January 3, 2021 121 $ 28.46 3.75 $ — Exercisable and Vested and expected to vest at January 3, 2021 121 $ 28.46 3.75 $ —
Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]	Options Outstanding Options Exercisable Range of Exercise Prices Options Outstanding Weighted Average Remaining Contractual Life Weighted Average Exercise Price Options Vested and Exercisable Weighted Average Exercise Price (in thousands) (in years) (in thousands) $12.05 52 5.68 $ 12.05 52 $ 12.05 $18.48 - $31.50 14 2.82 26.71 14 26.71 $32.20 3 2.34 32.2 3 32.20 $38.92 14 0.85 38.92 14 38.92 $39.48 - $44.94 9 2.76 42.94 9 42.91 $46.62 3 3.34 46.62 3 46.62 $47.46 14 2.94 47.46 14 47.46 $48.72 8 1.35 48.72 8 48.72 $53.48 4 3.38 53.48 4 53.48 $12.05- $53.48 121 3.75 $ 28.46 121 $ 28.46
Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]	RSUs & PRSUs Outstanding Number of Shares Weighted Average Grant Date Fair Value (in thousands) Nonvested at December 31, 2017 168 $ 21.56 Granted 110 11.90 Vested (77 ) 19.18 Forfeited (18 ) — Nonvested at December 30, 2018 183 17.22 Granted 353 10.77 Vested (118 ) 14.48 Forfeited (41 ) — Nonvested at December 29, 2019 377 $ 12.55 Granted 816 3.97 Vested (144 ) 10.41 Forfeited (249 ) 7.93 Nonvested at January 3, 2021 800 $ 4.99
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]	Fiscal Years 2020 2019 2018 Expected life (months) 6.0 6.0 6.0 Risk-free interest rate 0.12 % 2.37 % 2.26 % Volatility 82 % 54 % 50 % Dividend yield — — —

Note 14 - Information Concern_2

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Revenue from External Customers by Products and Services [Table Text Block]	Fiscal Years 2020 2019 2018 Revenue by product line (1) : New products $ 2,782 $ 3,123 $ 5,735 Mature products 5,852 7,187 6,894 Total revenue $ 8,634 $ 10,310 $ 12,629
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]	Fiscal Years 2020 2019 2018 Revenue by geography: Asia Pacific (1) $ 2,096 $ 3,049 $ 4,905 Europe 1,501 2,459 1,280 North America (2) 5,037 4,802 6,444 Total revenue $ 8,634 $ 10,310 $ 12,629
Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]	Fiscal Years 2020 2019 2018 Distributor "A" 24 % 40 % 34 % Distributor "C" 15 % 13 % * Distributor "E" 19 % * * Customer "B" 10 % 13 % 12 % Customer "E" * 10 % * Customer "F" 19 % * * Customer "G" * * 10 % Customer "J" * * 10 % Customer "M" 16 % * * January 3, December 29, 2021 2019 Distributor "A" * 20 % Distributor "C" * 23 % Distributor "E" * 12 % Distributor "J" * 31 % Customer "P" 67 % * Customer "Q" 10 % *

Schedule II - Valuation and Q_2

Schedule II - Valuation and Qualifying Accounts (Tables)	12 Months Ended
	Jan. 03, 2021
Notes Tables
Summary of Valuation Allowance [Table Text Block]	Allowance for Deferred Tax Assets: Fiscal Year 2020 $ 58,140 $ 2,398 $ — $ 60,538 Fiscal Year 2019 $ 54,913 $ 3,227 $ — $ 58,140 Fiscal Year 2018 $ 55,931 $ — $ (1,018 ) $ 54,913

Note 1 - The Company and Basi_2

Note 1 - The Company and Basis of Presentation (Details Textual)		Dec. 11, 2020	Jun. 22, 2020USD ($)$ / sharesshares	Dec. 06, 2019	Nov. 26, 2019	Nov. 25, 2019	Nov. 06, 2019USD ($)	Jun. 21, 2019USD ($)$ / sharesshares	Dec. 21, 2018USD ($)	Jul. 21, 2020USD ($)shares	May 31, 2018$ / sharesshares	Jan. 03, 2021USD ($)$ / sharesshares	Dec. 29, 2019USD ($)$ / sharesshares	Dec. 30, 2018USD ($)shares	Sep. 28, 2019USD ($)	Dec. 20, 2018USD ($)	Sep. 28, 2018USD ($)
Restructuring Costs, Total												$ 753,000	$ 0	$ 0
Cash and Cash Equivalents, at Carrying Value, Ending Balance												22,748,000	21,548,000
Line of Credit, Current												$ 15,000,000	$ 15,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares												$ 0.001	$ 0.001
Proceeds from Issuance of Common Stock												$ 9,296,000	$ 9,437,000	$ 16,215,000
Reverse Stock Split Ratio, Authorized					15	5
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				14
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares											965,251
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares			$ 0.001								$ 0.001
Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	[1]											2,642,000	1,314,000	965,000
Common Stock [Member] | Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares			2,500,000					1,300,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares			$ 0.001					$ 0.001
Shares Issued, Price Per Share (in dollars per share) | $ / shares			$ 3.50					$ 7
Proceeds from Issuance of Common Stock			$ 8,800,000					$ 8,000,000		$ 8,100,000
Common Stock [Member] | Exercise of Option for Overallotment of Shares by Underwriters [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares			375,000					171,429		141,733
Proceeds from Issuance of Common Stock										$ 496,000
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance												$ 22,600,000
Line of Credit, Current												$ 15,000,000	$ 15,000,000
Line of Credit Facility, Maximum Borrowing Capacity									$ 15,000,000						$ 9,000,000	$ 9,000,000	$ 9,000,000
Minimum Cash Required for Covenant Related to Credit Facility							$ 3,000,000		$ 3,000,000
Line of Credit Facility, Expiration Period (Year)		1 year					1 year		1 year
Debt Instrument, Interest Rate, Stated Percentage							5.50%
Debt Instrument, Interest Rate, Effective Percentage												3.75%	5.50%
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		0.50%					0.50%
[1]	Common stock, par value and additional paid-in capital amounts are adjusted to reflect 1-for-14 reverse stock split effected on December 23, 2019.

Note 2 - Significant Accounti_2

Note 2 - Significant Accounting Policies (Details Textual)	12 Months Ended
	Jan. 03, 2021USD ($)	Dec. 29, 2019USD ($)	Dec. 30, 2018USD ($)	Jan. 03, 2020USD ($)	Mar. 31, 2019USD ($)
Operating Expenses, Denominated in Foreign Currency, Percent	18.00%	19.00%	27.00%
Asset Impairment Charges, Total	$ 44,000	$ 4,000	$ 5,000
Revenue from Contract with Customer, Valuation Allowances And Reserves, Sales Return	30,000	60,000
Operating Lease, Right-of-Use Asset	1,134,000	2,200,000
Goodwill, Ending Balance	185,000	185,000
Deferred Tax Assets, Gross, Total	60,996,000	58,753,000
Deferred Tax Assets, Valuation Allowance, Total	$ 60,486,000	58,140,000		$ 60,000,000
Number of suppliers	1
Sensi ML [Member]
Goodwill, Ending Balance		185,000
Other Noncurrent Assets [Member]
Operating Lease, Right-of-Use Asset	$ 1,800,000				$ 975,000
Other Liabilities [Member]
Operating Lease, Liability, Total	$ 1,900,000				$ 939,000
Licensed Intellectual Property [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Restructuring Charges [Member]
Asset Impairment Charges, Total	$ 35,000
Restructuring Charges [Member] | INDIA
Operating Lease, Impairment Loss	93,000
Selling, General and Administrative Expenses [Member]
Marketing and Advertising Expense, Total	$ 76,000	$ 146,000	$ 93,000
Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	1 year
Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years
Finite-Lived Intangible Asset, Useful Life (Year)	5 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life (Year)	7 years

Note 3 - Net Loss Per Share (De

Note 3 - Net Loss Per Share (Details Textual)	Dec. 06, 2019	Jan. 03, 2021shares	Dec. 29, 2019shares	Dec. 30, 2018shares	May 29, 2018shares
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	14
Common Stock [Member] | Maximum [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					386,000
Share-based Payment Arrangement [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)		921,000	563,000	435,000

Note 4 - Balance Sheet Compon_3

Note 4 - Balance Sheet Components (Details Textual) - USD ($)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Depreciation, Amortization and Accretion, Net, Total	$ 817,000	$ 1,201,000	$ 1,276,000
Interest Costs Capitalized	0	0	$ 0
Capitalized Computer Software, Amortization	$ 148,000	$ 32,000

Note 4 - Balance Sheet Compon_4

Note 4 - Balance Sheet Components - Balance Sheet Components (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
Inventories:
Raw material	$ 191	$ 222
Work-in-process	1,842	2,370
Finished goods	655	668
Inventory, Net, Total	2,688	3,260
Other current assets:
Prepaid expenses	884	1,296
Other	182	269
Other Assets, Current	1,066	1,565
Property and equipment:
Property and equipment, gross	12,753	12,993
Accumulated depreciation and amortization	(12,205)	(12,163)
Property, Plant and Equipment, Net, Ending Balance	548	830
Capitalized internal-use software:
Capitalized software held for internal use	1,166	365
Accumulated amortization	(180)	(32)
Capitalized Computer Software, Net, Ending Balance	986	333
Accrued liabilities:
Employee compensation related accruals	762	713
Other	578	420
Accrued Liabilities, Current, Total	1,340	1,133
Equipment [Member]
Property and equipment:
Property and equipment, gross	10,471	10,694
Software [Member]
Property and equipment:
Property and equipment, gross	1,783	1,789
Furniture and Fixtures [Member]
Property and equipment:
Property and equipment, gross	33	36
Leasehold Improvements [Member]
Property and equipment:
Property and equipment, gross	$ 466	$ 474

Note 5 - Business Acquisition (

Note 5 - Business Acquisition (Details Textual) - USD ($)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Jan. 02, 2020
Goodwill, Ending Balance	$ 185,000	$ 185,000
Sensi ML [Member]
Revenues, Total	175,000	126,000
Amortization of Intangible Assets, Total	$ 148,000	148,000
Business Combination, Acquisition Related Costs		104,000
Goodwill, Ending Balance		$ 185,000
Escrow Deposit			$ 200,000

Note 6 - Intangible Assets - Sc

Note 6 - Intangible Assets - Schedule of Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019
Net Carrying Amount	$ 860
Sensi ML [Member]
Gross Carrying Amount	1,156	$ 1,156
Accumulated Amortization	(296)	(148)
Net Carrying Amount	$ 860	$ 1,008
Sensi ML [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years
Gross Carrying Amount	$ 959	$ 959
Accumulated Amortization	(192)	(96)
Net Carrying Amount	$ 767	$ 863
Sensi ML [Member] | Customer Relationships [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	2 years	2 years
Gross Carrying Amount	$ 81	$ 81
Accumulated Amortization	(81)	(40)
Net Carrying Amount	$ 0	$ 41
Sensi ML [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	10 years	10 years
Gross Carrying Amount	$ 116	$ 116
Accumulated Amortization	(23)	(12)
Net Carrying Amount	$ 93	$ 104

Note 6 - Intangible Assets - _2

Note 6 - Intangible Assets - Schedule of Expected Future Annual Amortization of Intangible Assets (Details) $ in Thousands	Jan. 03, 2021USD ($)
2021	$ 107
2022	107
2023	107
2024	107
2025	107
Thereafter	325
Total	$ 860

Note 7 - Debt Obligations (Deta

Note 7 - Debt Obligations (Details Textual) - USD ($) $ in Millions	Dec. 11, 2020	Nov. 06, 2019	Dec. 21, 2018	Jan. 03, 2021	May 06, 2020	Dec. 29, 2019	Sep. 28, 2019	Dec. 20, 2018	Sep. 28, 2018
Line of Credit, Current				$ 15		$ 15
Heritage Bank of Commerce [Member] | Paycheck Protection Program [Member]
Debt Instrument, Interest Rate, Stated Percentage					1.00%
Debt Instrument, Face Amount				1.2	$ 1.2
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity			$ 15				$ 9	$ 9	$ 9
Minimum Cash Required for Covenant Related to Credit Facility		$ 3	$ 3
Line of Credit Facility, Expiration Period (Year)	1 year	1 year	1 year
Debt Instrument, Interest Rate, Stated Percentage		5.50%
Line of Credit, Current				$ 15		$ 15
Debt Instrument, Interest Rate, Effective Percentage				3.75%		5.50%
Heritage Bank of Commerce [Member] | Revolving Credit Facility [Member] | Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.50%	0.50%

Note 8 - Leases (Details Textua

Note 8 - Leases (Details Textual)	12 Months Ended
	Jan. 03, 2021USD ($)ft²	Dec. 29, 2019USD ($)	Dec. 30, 2018USD ($)	Jul. 10, 2020ft²	Feb. 13, 2019ft²
Operating and Finance Lease, Right of Use Asset | $	$ 1,839,000	$ 2,370,000
Operating and Finance Lease Liability | $	1,882,000	2,287,000
Operating Lease, Expense | $	$ 493,000	$ 798,000	$ 881,000
Office In California [Member]
Lessee, Operating Lease, Term of Contract (Year)					5 years
Area of Land (Square Foot) | ft²					24,164
Office in India [Member]
Lessee, Operating Lease, Term of Contract (Year)				11 years
Area of Real Estate Property (Square Foot) | ft²	9,400
Office Premises in India [Member]
Area of Real Estate Property (Square Foot) | ft²				1,100
Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)	1 year
Lessee, Finance Lease, Term of Contract (Year)	2 years
Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)	5 years
Lessee, Finance Lease, Term of Contract (Year)	3 years

Note 8 - Leases - Summary of Op

Note 8 - Leases - Summary of Operating and Finance Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019
Fixed	$ 473	$ 757
Variable	0	0
Short term	20	40
Total	493	797
Amortization of ROU asset	315	388
Interest	38	18
Total	$ 353	$ 406

Note 8 - Leases - Summary of Su

Note 8 - Leases - Summary of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 29, 2019	Dec. 30, 2018
Operating cash flows used for operating leases	$ 497	$ 791
Operating cash flows used for finance leases	38	24
Financing cash flows used for financing leases	270	365	$ 365	$ 407
Total	805	1,180
Operating leases	0	2,200
Finance leases	914	170
Total	$ 914	$ 2,370

Note 8 - Leases - Details of Ri

Note 8 - Leases - Details of Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
Operating Lease, Right-of-Use Asset	$ 1,134	$ 2,200
Finance leases	705	170
Total	1,839	2,370
Finance leases	670	471
Total	1,882	2,287
Current and Lease Liabilities - Non-current [Member]
Operating Lease, Liability, Total	$ 1,212	$ 1,816

Note 8 - Leases - Schedule of F

Note 8 - Leases - Schedule of Future Lease Payments for Leases (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Dec. 29, 2019
2021	$ 402
2021	375
2022	409
2022	335
2023	422
2023	0
2024	106
2024	0
Total lease payments, operating	1,339
Total lease payments, finance	710
Less: Interest, operating	(127)
Less: Interest, finance	(40)
Present value of lease liabilities, finance	670	$ 471
Current and Lease Liabilities - Non-current [Member]
Present value of lease liabilities, operating	$ 1,212	$ 1,816

Note 8 - Leases - Schedule of L

Note 8 - Leases - Schedule of Lease Terms and Weighted Average Discount Rate (Details)	Jan. 03, 2021
Operating leases (Year)	3 years 2 months 26 days
Finance leases (Year)	2 years 2 months 15 days
Operating leases	6.00%
Finance leases	5.50%

Note 9 - Fair Value Measureme_2

Note 9 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	Jan. 03, 2021	Dec. 29, 2020
Money Market Funds [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Cash and Cash Equivalents, Fair Value Disclosure	$ 22	$ 20.9

Note 10 - Income Taxes (Details

Note 10 - Income Taxes (Details Textual) - USD ($) $ in Thousands	Dec. 22, 2017	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%	21.00%
Unrecognized Tax Benefits, Ending Balance		$ 2,176	$ 2,117	$ 2,161		$ 2,107
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		0
Federal [Member]
Operating Loss Carryforwards, Total		181,100			$ 39,200	$ 141,600
Federal [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount		4,100
State and Local Jurisdiction [Member]
Operating Loss Carryforwards, Total		81,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount		$ 4,600

Note 10 - Income Taxes - Compon

Note 10 - Income Taxes - Components of Income Tax Expense Benefit (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Income (loss) before income taxes	$ (11,100)	$ (15,524)	$ (13,627)
Federal	0	0	(19)
State	3	3	2
Foreign	39	108	169
Subtotal	42	111	152
Federal	0	(141)	0
State	0	(44)	0
Foreign	9	(6)	0
Subtotal	9	(191)	0
Provision for (benefit from) income taxes	51	(80)	152
Domestic Tax Authority [Member]
U.S.	(11,170)	(15,813)	(13,982)
Foreign Tax Authority [Member]
Foreign	$ 70	$ 289	$ 355

Note 10 - Income Taxes - Effect

Note 10 - Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Income tax (benefit) at statutory rate	$ (2,331)	$ (3,260)	$ (2,862)
State taxes	3	(42)	2
Stock compensation and other permanent differences	99	187	252
Foreign taxes	34	42	95
Future benefit of deferred tax assets not recognized	2,246	3,133	2,684
Other	0	(140)	(19)
Provision for (benefit from) income taxes	$ 51	$ (80)	$ 152

Note 10 - Income Taxes - Deferr

Note 10 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 03, 2021	Jan. 03, 2020	Dec. 29, 2019
Net operating losses	$ 43,703		$ 40,717
Accruals and reserves	1,239		1,345
Credits carryforward	5,860		5,765
Depreciation and amortization	9,240		9,760
Stock-based compensation	485		637
Operating lease liability	469		529
Gross deferred tax assets	60,996		58,753
Right-of-use asset	(458)		(552)
Gross deferred tax assets	(458)		(552)
Net deferred tax assets	60,538		58,201
Valuation allowance	(60,486)	$ (60,000)	(58,140)
Total deferred tax asset	$ 52		$ 61

Note 10 - Income Taxes - Unreco

Note 10 - Income Taxes - Unrecognized Tax Benefits Roll Forward (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Beginning balance of unrecognized tax benefits	$ 2,117	$ 2,161	$ 2,107
Additions for tax positions related to the prior year	38
subtractions for tax positions related to the prior year		(46)	(2)
Additions for tax positions related to the current year	114	88	125
Lapse of statutes of limitations	(93)	(86)	(69)
Ending balance of unrecognized tax benefits	$ 2,176	$ 2,117	$ 2,161

Note 11 - Stockholders' Equity

Note 11 - Stockholders' Equity (Details Textual)		Jun. 22, 2020USD ($)$ / sharesshares	Dec. 06, 2019	Jun. 21, 2019USD ($)$ / sharesshares	May 29, 2018yr$ / sharesshares	Jul. 21, 2020USD ($)shares	May 31, 2018USD ($)$ / sharesshares	Jan. 03, 2021USD ($)$ / sharesshares	Dec. 29, 2019USD ($)$ / sharesshares	Dec. 30, 2018USD ($)shares	Mar. 15, 2019USD ($)
Common Stock, Shares Authorized (in shares) | shares								200,000,000	200,000,000
Preferred Stock, Shares Authorized (in shares) | shares								10,000,000	10,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares								$ 0.001	$ 0.001
Proceeds from Issuance of Common Stock								$ 9,296,000	$ 9,437,000	$ 16,215,000
Payments of Stock Issuance Costs								$ 1,147,000	$ 1,181,000	$ 1,638,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares								$ 19.32
Class of Warrant or Right, Outstanding (in shares) | shares								386,100
Warrants Issued in Connection with Underwritten Public Offering [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) | shares							0.40
Warrants and Rights Outstanding, Term (Month)					60 months
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares					$ 19.32
Class of Warrant or Right, Estimated Grant Date Fair Value (in dollars per share) | $ / shares					$ 7.98
Warrants Issued in Connection with Underwritten Public Offering [Member] | Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input (Year) | yr					5
Warrants Issued in Connection with Underwritten Public Offering [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input (Year)					0.0258
Warrants Issued in Connection with Underwritten Public Offering [Member] | Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input (Year)					0.5275
Warrants Issued in Connection with Underwritten Public Offering [Member] | Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input (Year)					0
Maximum [Member] | Warrants Issued in Connection with Underwritten Public Offering [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares							386,100
Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares	[1]							2,642,000	1,314,000	965,000
Common Stock [Member] | Maximum [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares					386,000
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares							965,251
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001					$ 0.001
Equity Offering Units, Issued, Price Per Unit							16.10
Proceeds from Issuance or Sale of Equity, Total							$ 13,900,000
Underwritten Public Offering [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares		2,500,000		1,300,000
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Shares Issued, Price Per Share (in dollars per share) | $ / shares		$ 3.50		$ 7
Proceeds from Issuance of Common Stock		$ 8,800,000		$ 8,000,000		$ 8,100,000
Payments of Stock Issuance Costs		$ 1,100,000
Shelf Registration Maximum Offering											$ 75,000,000
Number Of Common Stocks, Issued, Units (in shares) | shares							1
Exercise of Option for Overallotment of Shares by Underwriters [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares) | shares		375,000		171,429		141,733
Proceeds from Issuance of Common Stock						$ 496,000
Payments of Stock Issuance Costs						52,000
Underwritten Public Offering, Including Exercise of Overallotment Options by Underwriters [Member] | Common Stock [Member]
Proceeds from Issuance of Common Stock						9,300,000
Payments of Stock Issuance Costs						1,200,000
Proceeds from Issuance of Common Stock, Net						$ 8,100,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio			14
[1]	Common stock, par value and additional paid-in capital amounts are adjusted to reflect 1-for-14 reverse stock split effected on December 23, 2019.

Note 12 - Employee Stock Plans

Note 12 - Employee Stock Plans (Details Textual) - shares	Apr. 24, 2019	Apr. 25, 2018	Apr. 26, 2017	Apr. 23, 2015	Dec. 22, 2017	Jan. 03, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)						10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						4 years
Stock Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)		285,714		178,571	107,143
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Weighted Average Number of Shares, Common Stock Subject to Repurchase or Cancellation (in shares)	299,070
Stock Plan 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)						550,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	357,143					319,341
Stock Plan 2019 [Member] | Restricted Stock Units (RSUs) [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage						25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)						1 year
The 2009 Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)			107,143	71,429
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)						341,948
Share-based Compensation Arrangement by Share-based Payment Award, Offering Period (Month)						6 months
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Employee Subscription Rate						20.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Number of Shares Per Employee (in shares)						1,429
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Offering Date						85.00%

Note 13 - Stock-based Compens_3

Note 13 - Stock-based Compensation (Details Textual) - USD ($)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Share-based Payment Arrangement, Amount Capitalized	$ 0	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 0
Share Price (in dollars per share)	$ 3.79
Proceeds from Stock Options Exercised	$ 0	3,600	195,000
Share-based Payment Arrangement, Expense	1,739,000	$ 3,144,000	$ 1,901,000
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 38,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)	0 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance (in dollars per share)	$ 1.09	$ 4.28	$ 5.18
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	20,409	24,131	31,306
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 2.47	$ 9.76	$ 15.40
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	341,926
Employee Stock Ownership Plan (ESOP), Compensation Expense	$ 39,000	$ 60,000	$ 205,000
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expense	$ 39,000	$ 117,000	$ 131,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	0	0	0
Restricted Stock Units (RSUs) [Member]
Share-based Payment Arrangement, Expense	$ 1,700,000	$ 3,000,000	$ 1,600,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value, Ending Balance (in dollars per share)	$ 4.99	$ 12.55	$ 17.22	$ 21.56
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)	816,000	353,000	110,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 3.97	$ 10.77	$ 11.90

Note 13 - Stock-based Compens_4

Note 13 - Stock-based Compensation - Schedule of Allocation of Recognized Period Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Total costs and expenses	$ 1,739	$ 3,144	$ 1,901
Cost of Sales [Member]
Total costs and expenses	162	78	129
Research and Development Expense [Member]
Total costs and expenses	670	2,242	760
Selling, General and Administrative Expenses [Member]
Total costs and expenses	$ 907	$ 824	$ 1,012

Note 13 - Stock-based Compens_5

Note 13 - Stock-based Compensation - Schedule of Stock Based Compensation Award Activity (Details) - shares shares in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Balance (in shares)	186	229	254
Options granted (in shares)	0	0	0
Balance (in shares)	121	186	229
Stock Plan 2019 [Member]
Balance (in shares)	272
Authorized (in shares)	550
Options granted (in shares)	0
Options forfeited or expired (in shares)	65
Granted (in shares)	(816)
RSUs forfeited (in shares)	249
Balance (in shares)	320	272

Note 13 - Stock-Based Compens_6

Note 13 - Stock-Based Compensation - Stock Options Activity (Details) - USD ($)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Balance (in shares)	186,000	229,000	254,000
Weighted average price balance (in dollars per share)	$ 32.09	$ 30.52	$ 29.26
Weighted average remaining, balance (Year)	3 years 9 months	3 years 3 months 25 days	3 years 8 months 12 days	4 years 4 months 2 days
Options granted (in shares)	0	0	0
Weighted average price, granted (in dollars per share)	$ 0	$ 0	$ 0
Forfeited or expired (in shares)	(65,000)	(42,000)	(10,000)
Weighted average price, forfeited or expired (in dollars per share)	$ 38.83	$ 24.14	$ 25.20
Exercised, options (in shares)	0	(1,000)	(15,000)
Weighted average price, exercised (in dollars per share)	$ 0	$ 10.92	$ 12.60
Balance (in shares)	121,000	186,000	229,000	254,000
Weighted average price balance (in dollars per share)	$ 28.46	$ 32.09	$ 30.52	$ 29.26
Aggregate intrinsic value, balance	$ 0
Exercisable and Vested and expected to vest, options (in shares)	121
Weighted average price, exercisable and Vested and expected to vest (in dollars per share)	$ 28.46
Weighted average remaining, exercisable and Vested and expected to vest (Year)	3 years 9 months
Aggregate intrinsic value, exercisable and Vested and expected to vest	$ 0

Note 13 - Stock-Based Compens_7

Note 13 - Stock-Based Compensation - Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range (Details)	12 Months Ended
	Jan. 03, 2021$ / sharesshares
Range 1 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	52,000
Weighted Average Remaining Contractual Life (Year)	5 years 8 months 4 days
Weighted Average Exercise Price (in dollars per share)	$ 12.05
Options Exercisable (in shares) | shares	52,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 12.05
Range 2 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	14,000
Weighted Average Remaining Contractual Life (Year)	2 years 9 months 25 days
Weighted Average Exercise Price (in dollars per share)	$ 26.71
Options Exercisable (in shares) | shares	14,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 26.71
Range 3 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	3
Weighted Average Remaining Contractual Life (Year)	2 years 4 months 2 days
Weighted Average Exercise Price (in dollars per share)	$ 32.2
Options Exercisable (in shares) | shares	3
Options, Weighted Average Exercise Price (in dollars per share)	$ 32.20
Range 4 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	14,000
Weighted Average Remaining Contractual Life (Year)	10 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 38.92
Options Exercisable (in shares) | shares	14,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 38.92
Range 5 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	9,000
Weighted Average Remaining Contractual Life (Year)	2 years 9 months 3 days
Weighted Average Exercise Price (in dollars per share)	$ 42.94
Options Exercisable (in shares) | shares	9,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 42.91
Range 6 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	3,000
Weighted Average Remaining Contractual Life (Year)	3 years 4 months 2 days
Weighted Average Exercise Price (in dollars per share)	$ 46.62
Options Exercisable (in shares) | shares	3,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 46.62
Range 8 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	14,000
Weighted Average Remaining Contractual Life (Year)	2 years 11 months 8 days
Weighted Average Exercise Price (in dollars per share)	$ 47.46
Options Exercisable (in shares) | shares	14,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 47.46
Range 9 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	8,000
Weighted Average Remaining Contractual Life (Year)	1 year 4 months 6 days
Weighted Average Exercise Price (in dollars per share)	$ 48.72
Options Exercisable (in shares) | shares	8,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 48.72
Range 10 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	4,000
Weighted Average Remaining Contractual Life (Year)	3 years 4 months 17 days
Weighted Average Exercise Price (in dollars per share)	$ 53.48
Options Exercisable (in shares) | shares	4,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 53.48
Range 11 [Member]
Options Outstanding - Lower Limit (in dollars per share)
Options Outstanding (in shares) | shares	121,000
Weighted Average Remaining Contractual Life (Year)	3 years 9 months
Weighted Average Exercise Price (in dollars per share)	$ 28.46
Options Exercisable (in shares) | shares	121,000
Options, Weighted Average Exercise Price (in dollars per share)	$ 28.46

Note 13 - Stock-Based Compens_8

Note 13 - Stock-Based Compensation - Summary of Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares shares in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Balance (in shares)	377	183	168
Balance (in dollars per share)	$ 12.55	$ 17.22	$ 21.56
Granted (in shares)	816	353	110
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)	$ 3.97	$ 10.77	$ 11.90
Vested (in shares)	(144)	(118)	(77)
Vested (in dollars per share)	$ 10.41	$ 14.48	$ 19.18
Forfeited (in shares)	(249)	(41)	(18)
Forfeited (in dollars per share)	$ 7.93	$ 0	$ 0
Balance (in shares)	800	377	183
Balance (in dollars per share)	$ 4.99	$ 12.55	$ 17.22

Note 13 - Stock-Based Compens_9

Note 13 - Stock-Based Compensation - Schedule of Weighted Average Assumptions (Details)	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Expected life (months) (Month)	6 months	6 months	6 months
Risk-free interest rate	0.12%	2.37%	2.26%
Volatility	82.00%	54.00%	50.00%

Note 14 - Information Concern_3

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration (Details Textual) - USD ($) $ in Thousands		12 Months Ended
		Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Revenue from Contract with Customer, Excluding Assessed Tax, Total	[1]	$ 8,634	$ 10,310	$ 12,629
JAPAN
Revenue from Contract with Customer, Excluding Assessed Tax, Total		$ 2,000	$ 1,800	$ 1,600
JAPAN | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Concentration Risk, Percentage		23.00%	17.00%	12.00%
CHINA
Revenue from Contract with Customer, Excluding Assessed Tax, Total			$ 1,100	$ 1,800
CHINA | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Concentration Risk, Percentage			11.00%	15.00%
UNITED STATES
Revenue from Contract with Customer, Excluding Assessed Tax, Total		$ 5,000	$ 4,700	$ 6,400
UNITED STATES | Revenue Benchmark [Member] | Geographic Concentration Risk [Member]
Concentration Risk, Percentage		58.00%	46.00%	50.00%
Non-US [Member] | Assets, Total [Member] | Geographic Concentration Risk [Member]
Concentration Risk, Percentage		4.00%	7.00%
[1]	New products include all products manufactured on 180 nanometer or smaller semiconductor processes, eFPGA IP license, QuickAI and SensiML AI software as a service (SaaS) revenues. Mature products include all products produced on semiconductor processes larger than 180 nanometer.

Note 14 - Information Concern_4

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration - Schedule of Revenue by Product Line (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Total revenue	[1]	$ 8,634	$ 10,310	$ 12,629
New Products [Member]
Total revenue	[1]	2,782	3,123	5,735
Mature Products [Member]
Total revenue	[1]	$ 5,852	$ 7,187	$ 6,894
[1]	New products include all products manufactured on 180 nanometer or smaller semiconductor processes, eFPGA IP license, QuickAI and SensiML AI software as a service (SaaS) revenues. Mature products include all products produced on semiconductor processes larger than 180 nanometer.

Note 14 - Information Concern_5

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration - Schedule of Revenue by Shipment Destination (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Total revenue	[1]	$ 8,634	$ 10,310	$ 12,629
Asia Pacific [Member]
Total revenue	[2]	2,096	3,049	4,905
Europe [Member]
Total revenue		1,501	2,459	1,280
North America [Member]
Total revenue	[3]	$ 5,037	$ 4,802	$ 6,444
[1]	New products include all products manufactured on 180 nanometer or smaller semiconductor processes, eFPGA IP license, QuickAI and SensiML AI software as a service (SaaS) revenues. Mature products include all products produced on semiconductor processes larger than 180 nanometer.
[2]	Asia Pacific includes revenue from Japan of $2.0 million or 23% of total revenue in 2020 In 2019 revenue from Chinas was $1.1 million or 11% and Japan $1.8 million or 17%, respectively. In 2018, revenue from China was $1.8 million or 15% and Japan $1.6 million or 12%, respectively.
[3]	North America includes revenue from the United States of $5.0 million or 58% of total revenue in 2020, $4.7 million or 46% of total revenue in 2019 and $6.4 million or 50% of total revenue in 2018.

Note 14 - Information Concern_6

Note 14 - Information Concerning Product Lines, Geographic Information, Accounts Receivable and Revenue Concentration - Customer and Distributor Concentration (Details) - Customer Concentration Risk [Member]	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Distributor "A" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	24.00%	40.00%	34.00%
Distributor "A" [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage		20.00%
Distributor "C" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	15.00%	13.00%
Distributor "C" [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage		23.00%
Distributor "E" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	19.00%
Distributor "E" [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage		12.00%
Customer "B" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	10.00%	13.00%	12.00%
Distributor "J" [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage		31.00%
Customer "E" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage		10.00%
Customer P [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage	67.00%
Customer "F" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	19.00%
Customer Q [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage	10.00%
Customer G [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage			10.00%
Customer "J" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage			10.00%
Customer "M" [Member] | Revenue Benchmark [Member]
Concentration Risk, Percentage	16.00%

Note 15 - Commitments and Con_2

Note 15 - Commitments and Contingencies (Details Textual) - USD ($)	Jan. 03, 2021	Dec. 29, 2019
Wafer Purchase Commitment [Member]
Purchase Commitment, Remaining Minimum Amount Committed	$ 60,000	$ 57,000
Goods and Services [Member]
Purchase Obligation, Total	$ 692,000

Note 16 - Subsequent Events (De

Note 16 - Subsequent Events (Details Textual) - Heritage Bank of Commerce [Member] - Paycheck Protection Program [Member] - USD ($) $ in Millions	Jan. 26, 2021	Jan. 03, 2021	May 06, 2020
Debt Instrument, Face Amount		$ 1.2	$ 1.2
Subsequent Event [Member]
Debt Instrument, Decrease, Forgiveness	$ 1.2

Schedule II - Valuation and Q_3

Schedule II - Valuation and Qualifying Accounts - Summary of Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 03, 2021	Dec. 29, 2019	Dec. 30, 2018
Balance	$ 58,140	$ 54,913	$ 55,931
Additions at cost	2,398	3,227	0
Deductions	0	0	(1,018)
Balance	$ 60,538	$ 58,140	$ 54,913