Energous (WATT) 10-Q 17 May 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 12, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	WATT
Entity Registrant Name	Energous Corp
Entity Central Index Key	0001575793
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		61,939,578
Title of 12(b) Security	Common Stock, $0.00001 par value
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity File Number	001-36379
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-1318953
Entity Address, Address Line One	3590 North First Street
Entity Address, Address Line Two	Suite 210
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	408
Local Phone Number	963-0200
Document Quarterly Report	true
Document Transition Report	false

Balance Sheets

Balance Sheets - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 44,758,397	$ 50,729,661
Accounts receivable	156,775	75,850
Prepaid expenses and other current assets	742,193	636,702
Total current assets	45,657,365	51,442,213
Property and equipment, net	449,664	402,711
Operating lease right-of-use assets	1,097,377	1,293,291
Other assets	1,610	1,610
Total assets	47,206,016	53,139,825
Current liabilities:
Accounts payable	1,450,767	1,096,839
Accrued expenses	1,756,286	1,576,287
Operating lease liabilities, current portion	805,557	825,431
Deferred revenue	17,000	12,000
Total current liabilities	4,029,610	3,510,557
Operating lease liabilities, long-term portion	386,424	576,762
Total liabilities	4,416,034	4,087,319
Commitments and contingencies
Stockholders’ equity:
Preferred Stock, $0.00001 par value, 10,000,000 shares authorized at March 31, 2021 and December 31, 2020; no shares issued or outstanding
Common Stock, $0.00001 par value, 200,000,000 shares authorized at March 31, 2021 and December 31, 2020, respectively; 61,919,824 and 61,292,412 shares issued and outstanding at March 31, 2021 and December 31, 2020, respectively.	620	614
Additional paid-in capital	346,287,871	344,024,638
Accumulated deficit	(303,498,509)	(294,972,746)
Total stockholders’ equity	42,789,982	49,052,506
Total liabilities and stockholders’ equity	$ 47,206,016	$ 53,139,825

Balance Sheets (Parenthetical)

Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	200,000,000	200,000,000
Common stock, shares issued	61,919,824	61,292,412
Common stock, shares outstanding	61,919,824	61,292,412

Condensed Statements of Operati

Condensed Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 145,065	$ 61,475
Operating expenses:
Research and development	4,591,244	4,575,303
Sales and marketing	1,794,212	1,447,909
General and administrative	2,287,396	2,652,394
Cost of services revenue		39,544
Total operating expenses	8,672,852	8,715,150
Loss from operations	(8,527,787)	(8,653,675)
Other income:
Interest income	2,024	55,939
Total other income	2,024	55,939
Net loss	$ (8,525,763)	$ (8,597,736)
Basic and diluted loss per common share	$ (0.14)	$ (0.25)
Weighted average shares outstanding, basic and diluted	61,567,003	34,816,553

Condensed Statement of Changes

Condensed Statement of Changes in Stockholders' Equity - USD ($)	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning balance at Dec. 31, 2019	$ 19,012,874	$ 333	$ 282,153,201	$ (263,140,660)
Beginning balance (in shares) at Dec. 31, 2019		33,203,806
Stock-based compensation - restricted stock units ("RSUs")	2,321,820		2,321,820
Stock-based compensation - performance share units ("PSUs")	(88,348)		(88,348)
Stock-based compensation - employee stock purchase plan ("ESPP")	42,827		42,827
Issuance of shares for RSUs		$ 4	(4)
Issuance of shares for RSUs (in shares)		396,559
Proceeds from contributions to the ESPP	113,059		113,059
Issuance of shares in an at-the-market ("ATM")offering, net of $141,322 in issuance costs	5,506,880	$ 44	5,506,836
Issuance of shares in an at-the-market ("ATM") offering, net of issuance costs (in shares)		4,351,652
Net loss	(8,597,736)			(8,597,736)
Ending balance at Mar. 31, 2020	18,311,376	$ 381	290,049,391	(271,738,396)
Ending balance (in shares) at Mar. 31, 2020		37,952,017
Beginning balance at Dec. 31, 2020	49,052,506	$ 614	344,024,638	(294,972,746)
Beginning balance (in shares) at Dec. 31, 2020		61,292,412
Stock-based compensation - restricted stock units ("RSUs")	2,088,910		2,088,910
Stock-based compensation - employee stock purchase plan ("ESPP")	57,316		57,316
Issuance of shares for RSUs		$ 6	(6)
Issuance of shares for RSUs (in shares)		627,412
Proceeds from contributions to the ESPP	117,013		117,013
Net loss	(8,525,763)			(8,525,763)
Ending balance at Mar. 31, 2021	$ 42,789,982	$ 620	$ 346,287,871	$ (303,498,509)
Ending balance (in shares) at Mar. 31, 2021		61,919,824

Condensed Statement of Change_2

Condensed Statement of Changes in Stockholders' Equity (Parenthetical)	3 Months Ended
	Mar. 31, 2020USD ($)
ATM [Member]
Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs	$ 141,322

Condensed Statements of Cash Fl

Condensed Statements of Cash Flows - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (8,525,763)	$ (8,597,736)
Adjustments to reconcile net loss to Net cash used in operating activities:
Depreciation and amortization	64,774	121,699
Stock based compensation	2,146,226	2,276,299
Changes in operating lease right-of-use assets	195,914	188,445
Bad debt expense		33,000
Changes in operating assets and liabilities:
Accounts receivable	(80,925)	(29,029)
Prepaid expenses and other current assets	(105,491)	98,212
Accounts payable	353,928	(633,268)
Accrued expenses	179,999	(628,052)
Operating lease liabilities	(210,212)	(169,681)
Deferred revenue	5,000
Net cash used in operating activities	(5,976,550)	(7,340,111)
Cash flows from investing activities:
Purchases of property and equipment	(111,727)
Net cash used in investing activities	(111,727)
Cash flows from financing activities:
Net proceeds from the sales of common stock		5,506,880	$ 53,556,202
Proceeds from contributions to employee stock purchase plan	117,013	113,059
Net cash provided by financing activities	117,013	5,619,939
Net decrease in cash and cash equivalents	(5,971,264)	(1,720,172)
Cash and cash equivalents - beginning	50,729,661	21,684,089	21,684,089
Cash and cash equivalents - ending	44,758,397	19,963,917	$ 50,729,661
Restricted Stock Units (RSUs) [Member]
Supplemental disclosure of non-cash financing activities:
Common stock issued	$ 6	$ 4

Business Organization, Nature o

Business Organization, Nature of Operations	3 Months Ended
	Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Business Organization, Nature of Operations	Note 1 - Business Organization, Nature of Operations Energous Corporation (the “Company”) was incorporated in Delaware on October 30, 2012. The Company has developed its WattUp® technology, consisting of proprietary semiconductor chipsets, software, hardware designs and antennas, that enables radio frequency (“RF”) based charging for electronic devices, providing wire-free contact and non-contact charging solutions, with the potential to enable charging with mobility. The Company believes its proprietary WattUp technology can be utilized in consumer electronics such as wearables, hearing aids, earbuds, Bluetooth headsets, Internet of Things (“IoT”) devices, smartphones, tablets, e-book readers, keyboards, mice, remote controls, rechargeable lights, cylindrical batteries, medical devices and other devices with charging requirements that would otherwise require battery replacement or wired power connection.

Liquidity and Management Plans

Liquidity and Management Plans	3 Months Ended
	Mar. 31, 2021
Liquidity And Management Plan Disclosure [Abstract]
Liquidity and Management Plans	Note 2 – Liquidity and Management Plans During the three months ended March 31, 2021 and 2020, the Company recorded revenue of $145,065 and $61,475, respectively. During the three months ended March 31, 2021 and 2020, the Company recorded a net loss of $8,525,763 and $8,597,736, respectively. Net cash used in operating activities was $5,976,550 and $7,340,111 for the three months ended March 31, 2021 and 2020, respectively. The Company is currently meeting its liquidity requirements through the proceeds of securities offerings that raised net proceeds of $53,556,202 during 2020, along with payments received from customers. As of March 31, 2021, the Company had cash on hand of $44,758,397. The Company expects that cash on hand as of March 31, 2021, together with anticipated revenues, will be sufficient to fund the Company’s operations into May 2022. Research and development of new technologies is by its nature unpredictable. Although the Company intends to continue its research and development activities, there can be no assurance that its available resources and revenue generated from its business operations will be sufficient to sustain its operations. Accordingly, the Company expects to pursue additional financing, which could include offerings of equity or debt securities, bank financings, commercial agreements with customers or strategic partners, and other alternatives, depending upon market conditions. There is no assurance that such financing would be available on terms that the Company would find acceptable, or at all. The market for products using the Company’s technology is broad and evolving, but remains nascent and unproven, so the Company’s success is dependent upon many factors, including customer acceptance of its existing products, technical feasibility of future products, regulatory approvals, competition and global market fluctuations. In March 2020, the World Health Organization declared the outbreak of a novel coronavirus (COVID-19) as a pandemic. The pandemic continues to affect the United States and the world. The Company is monitoring the ongoing effects of COVID-19 (including continued outbreaks) and the related business and travel restrictions and changes to behavior intended to reduce its spread, and COVID-19’s impact on the Company’s operations, financial position, cash flows, inventory, supply chains, global regulatory approvals, purchasing trends, customer payments, and the industry in general, in addition to the impact on its employees. Due to the continuing developments and fluidity of this situation, the magnitude and duration of the pandemic and its impact on the Company's operations and liquidity are still uncertain as of the date of this report.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 3 – Summary of Significant Accounting Policies Basis of Presentation The accompanying financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”), and pursuant to the accounting and disclosure rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). These unaudited condensed interim financial statements should be read in conjunction with the audited financial statements and notes thereto for the fiscal year ended December 31, 2020 included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the SEC on March 24, 2021. The accounting policies used in preparing these unaudited condensed interim financial statements are consistent with those described in the Company’s December 31, 2020 audited financial statements . Note 3 – Summary of Significant Accounting Policies, continued Use of Estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date of the financial statements as well as the reported expenses during the reporting periods. The Company’s significant estimates and assumptions include the valuation of stock-based compensation instruments, recognition of revenue, the useful lives of long-lived assets, and income tax expense. Some of these judgments can be subjective and complex, and, consequently, actual results may differ from these estimates. Although the Company believes that its estimates and assumptions are reasonable, they are based upon information available at the time the estimates and assumptions were made. Actual results could differ from those estimates. Cash and Cash Equivalents The Company considers all short-term, highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents. The Company maintains cash balances that may be uninsured or in deposit accounts that exceed Federal Deposit Insurance Corporation limits. The Company maintains its cash deposits with major financial institutions. Revenue Recognition On January 1, 2018, the Company adopted Accounting Standards Update No. 2014-09, "Revenue from Contracts with Customers" (Topic 606). In accordance with Topic 606, the Company recognizes revenue using the following five-step approach: 1. Identify the contract with a customer. 2. Identify the performance obligations in the contract. 3. Determine the transaction price of the contract. 4. Allocate the transaction price to the performance obligations in the contract. 5. Recognize revenue when the performance obligations are met or delivered. The Company’s revenue primarily consists of product development projects revenue and royalty revenue from Dialog. The Company also provides contract services for Dialog. During the three months ended March 31, 2021, the Company recognized $145,065 in product development projects revenue, $0 in royalty revenue and $0 in contract services revenue. During the three months ended March 31, 2020, the Company recognized $20,850 in product development projects revenue, $0 in royalty revenue and $40,625 in contract services revenue. The Company records revenue associated with product development projects that it enters into with certain customers. In general, these product development projects are complex, and the Company does not have certainty about its ability to achieve the project milestones. The achievement of a milestone is dependent on the Company’s performance obligation and requires acceptance by the customer. The Company recognizes this revenue at a point in time based on when the performance obligation is met. The payment associated with achieving the performance obligation is generally commensurate with the Company’s effort or the value of the deliverable and is nonrefundable. The Company records the expenses related to these product development projects in research and development expense, in the periods such expenses were incurred. The Company records royalty revenue from its manufacturing partner, Dialog, and such royalty revenue is recognized at a point in time based on shipments from Dialog to its customers. The Company recognizes contract services revenue from Dialog over the period of time that the services are performed. The costs associated with this revenue are recognized as the services are performed and are included in cost of services revenue. Research and Development Research and development expenses are charged to operations as incurred. For internally developed patents, all patent application costs are expensed as incurred as research and development expense. Patent application costs, which are generally legal costs, are expensed as research and development costs until such time as the future economic benefits of such patents become more certain. The Company incurred research and development costs of $4,591,244 and $4,575,303 for the three months ended March 31, 2021 and 2020, respectively. Note 3 – Summary of Significant Accounting Policies, continued Stock-Based Compensation The Company accounts for equity instruments issued to employees, board members and contractors in accordance with accounting guidance that requires awards to be recorded at their fair value on the date of grant and are amortized over the vesting period of the award. The Company recognizes compensation costs on a straight-line basis over the requisite service period of the award, which is typically the vesting term of the equity instrument issued. Under the Company’s Employee Stock Purchase Plan (“ESPP”), employees may purchase a limited number of shares of the Company’s common stock at a 15% discount from the lower of the closing market prices measured on the first and last days of each half-year period. The Company recognizes stock-based compensation expense for the fair value of the purchase options, as measured on the grant date. Income Taxes Tax benefits are recognized only for tax positions that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized upon settlement. A liability for “unrecognized tax benefits” is recorded for any tax benefits claimed in the Company’s tax returns that do not meet these recognition and measurement standards. As of March 31, 2021, no liability for unrecognized tax benefits was required to be reported. The guidance also discusses the classification of related interest and penalties on income taxes. The Company’s policy is to record interest and penalties on uncertain tax positions as a component of income tax expense. No interest or penalties were recorded during the three months ended March 31, 2021 or 2020. The Company files income tax returns with the United States and California governments. Net Loss Per Common Share Basic net loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options and warrants (using the treasury stock method), the vesting of restricted stock units (“RSUs”) and performance stock units (“PSUs”) and the enrollment of employees in the ESPP. The computation of diluted loss per share excludes potentially dilutive securities of 7,137,741 and 7,206,004 for the three months ended March 31, 2021 and 2020, respectively, because their inclusion would be anti-dilutive. Potentially dilutive securities outlined in the table below have been excluded from the computation of diluted net loss per share because the effect of their inclusion would have been anti-dilutive. For the Three Months Ended March 31, 2021 2020 Warrant issued to private investors 3,284,789 3,938,802 Options to purchase common stock 550,985 550,985 RSUs 1,851,254 2,048,540 PSUs 1,450,713 667,677 Total potentially dilutive securities 7,137,741 7,206,004 Note 3 – Summary of Significant Accounting Policies, continued Leases As of January 1, 2019, the Company determines if an arrangement is a lease at the inception of the arrangement. The Company applies the short-term lease recognition exemption and recognizes lease payments in profit or loss at lease commencement for facility or equipment leases that have a lease term of 12 months or less and do not include a purchase option whose exercise is reasonably certain. Operating leases are included in operating lease right-of-use (ROU) assets and operating lease liabilities. ROU assets represent the right to use an underlying asset for the lease term, and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are measured and recorded at the later of the adoption date, January 1, 2019, or the service commencement date based on the present value of lease payments over the lease term. The Company uses the implicit interest rate when readily determinable; however, most leases do not establish an implicit rate, so the Company uses an estimate of the incremental borrowing rate based on the information available at the time of measurement. Lease expense for lease payments is recognized on a straight-line basis over the lease term. See Note 4 – Commitments and Contingencies, Operating Leases Recent Accounting Pronouncements In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740),” Simplifying the Accounting for Income Taxes Management’s Evaluation of Subsequent Events The Company evaluates events that have occurred after the balance sheet date of March 31, 2021, through the date which the financial statements are available to be issued.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 4 – Commitments and Contingencies Operating Leases San Jose Lease On July 1, 2019, the Company signed a new lease agreement for the lease of its office space at its corporate headquarters in San Jose, California for an additional three years. The lease agreement includes space on the first floor of the building that had been previously subleased. Upon expiration of the original lease on September 30, 2019, the new monthly lease payment starting October 1, 2019 was $52,970 and is subject to annual escalations up to a maximum monthly lease payment of $64,941. Note 4 – Commitments and Contingencies, continued Operating Leases, continued Costa Mesa Lease On July 15, 2019, the Company signed a new lease agreement for the lease of office space in Costa Mesa, California for an additional two years. Upon expiration of the original lease on September 30, 2019, the new monthly lease payment starting October 1, 2019 was $9,773 and is subject to an annual escalation up to a maximum monthly lease payment of $10,200. Operating Lease Commitments In February 2016, the FASB issued its final standard on lease accounting, ASU No. 2016-02, “Leases (Topic 842),” which superseded Topic 840, “Leases,” which was further modified in ASU No. 2018-10, “Codification Improvements” to clarify the implementation guidance. The new accounting standard was effective for the Company beginning on January 1, 2019 and required the recognition on the balance sheet of right-of-use assets and lease liabilities. The Company elected the optional transition method and adopted the new guidance on January 1, 2019 on a modified retrospective basis with no restatement of prior period amounts. The Company’s adoption of the new standard resulted in the recognition of right-of-use assets of $414,426 and operating lease liabilities of $485,747, with no material cumulative effect adjustment to equity as of the date of adoption. The Company anticipates having future total lease payments of $1,224,876 during the period from the second quarter of 2021 to the third quarter of 2022. As of March 31, 2021, the company has total operating lease right-of-use assets of $1,097,377, current portion operating lease liabilities of $805,557 and long-term portion of operating lease liabilities of $386,424. The weighted average remaining lease term is 1.4 years as of March 31, 2021. A reconciliation of undiscounted cash flows to lease liabilities recognized as of March 31, 2021 is as follows: Amount (unaudited) 2021 640,407 2022 584,469 Total future lease payments 1,224,876 Present value discount (4% weighted average) (32,895 ) Total operating lease liabilities 1,191,981 Hosted Design Software Agreement On June 25, 2015, the Company entered into a three-year Litigations, Claims, and Assessments The Company is from time to time involved in various disputes, claims, liens and litigation matters arising in the normal course of business. While the outcome of these disputes, claims, liens and litigation matters cannot be predicted with certainty, after consulting with legal counsel, management does not believe that the outcome of these matters will have a material adverse effect on the Company's combined financial position, results of operations or cash flows. Note 4 – Commitments and Contingencies, continued MBO Bonus Plan On March 15, 2018, the Company’s Board of Directors (“Board”), on the recommendation of the Board’s Compensation Committee (“Compensation Committee”), approved the Energous Corporation MBO Bonus Plan (“Bonus Plan”) for executive officers of the Company. To be eligible to receive a bonus under the Bonus Plan, an executive officer must be continuously employed throughout the applicable performance period, and in good standing, and achieve the performance objectives selected by the Compensation Committee. Under the Bonus Plan, the Compensation Committee is responsible for selecting the amounts of potential bonuses for executive officers, the performance metrics used to determine whether any such bonuses will be paid and determining whether those performance metrics have been achieved. During the three months ended March 31, 2021, the Company accrued $391,578 in expense under the Bonus Plan, which will be paid during the second quarter of 2021. During the three months ended March 31, 2020, the Company accrued $284,591 in expense, which was paid during the second quarter of 2020. Severance and Change in Control Agreement On March 15, 2018, the Compensation Committee approved a form of Severance and Change in Control Agreement (“Severance Under the Severance Agreement, if an Executive is terminated in a qualifying termination, the Company agrees to pay the Executive six to 12 months of that Executive’s monthly base salary. If Executive elects continued coverage under the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) the Company will pay the full amount of Executive’s premiums under the Company’s health, dental and vision plans, including coverage for the Executive’s eligible dependents, for the six to 12 month period following the Executive’s termination. Amended Employee Agreement – Stephen Rizzone On April 3, 2015, the Company entered into an Amended and Restated Executive Employment Agreement with Stephen R. Rizzone, the Company’s President and Chief Executive Officer (“Employment Agreement”). The Employment Agreement effective as of January 1, 2015, has an initial term of four years and automatically renews each year after the initial term. The Employment Agreement provides for an annual base salary of $365,000, and Mr. Rizzone is eligible to receive quarterly cash bonuses from the MBO Bonus Plan with a total target amount equal to 100% of his base salary based upon achievement of performance-based objectives established by the Board. Mr. Rizzone is also eligible to receive all customary and usual benefits generally available to senior executives of the Company. Strategic Alliance Agreement In November 2016, the Company and Dialog Semiconductor plc (“Dialog”), a related party (see Note 7—Related Party Transactions), entered into a Strategic Alliance Agreement (“Alliance Agreement”) for the manufacture, distribution and commercialization of products incorporating the Company’s wire-free charging technology (“Licensed Products”). Pursuant to the terms of the Alliance Agreement, the Company agreed to engage Dialog as the exclusive supplier of the Licensed Products for specified fields of use, subject to certain exceptions (the “Company Exclusivity Requirement”). Dialog agreed to not distribute, sell or work with any third party to develop any competing products without the Company’s approval (the “Dialog Exclusivity Requirement”). In addition, both parties agreed on a revenue sharing arrangement and will collaborate on the commercialization of Licensed Products based on a mutually-agreed upon plan. Each party will retain all of its intellectual property. The Alliance Agreement has an initial term of seven years and will automatically renew annually thereafter unless terminated by either party upon 180 days’ prior written notice. The Company may terminate the Alliance Agreement at any time after the third anniversary of the Agreement upon 180 days’ prior written notice to Dialog, or if Dialog breaches certain exclusivity obligations. Dialog may terminate the Alliance Agreement if sales of Licensed Products do not meet specified targets. The Company Exclusivity Requirement will terminate upon the earlier of January 1, 2021 or the occurrence of certain events relating to the Company’s pre-existing exclusivity obligations. The Company Exclusivity Requirement renews automatically on an annual basis unless the Company and Dialog agree to terminate the requirement.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity	Note 5 – Stockholders’ Equity Authorized Capital The holders of the Company’s common stock are entitled to one vote per share. Holders of common stock are entitled to receive ratably such dividends, if any, as may be declared by the Board out of legally available funds. Upon the liquidation, dissolution or winding up of the Company, holders of common stock are entitled to share ratably in all assets of the Company that are legally available for distribution. Financing On August 9, 2018, the Company filed a shelf registration statement on Form S-3 with the SEC, which became effective on August 17, 2018. This shelf registration statement allows the Company to sell, from time to time, any combination of debt or equity securities described in the registration statement up to aggregate proceeds of $75,000,000. Pursuant to this registration statement, in March 2019 the Company raised $23,319,156 (net of $1,680,844 in issuance costs) from an offering of shares of its common stock and warrants to purchase 1,666,666 shares of common stock at an exercise price of $10.00 per share. The Company also raised $4,557,693 (net of $339,081 in issuance costs) during the fourth quarter of 2019, $5,506,880 (net of $141,322 in issuance costs) during the first quarter of 2020 and $9,216,611 (net of $236,528 in issuance costs) during the second quarter of 2020, pursuant to this shelf registration statement. On September 15, 2020, the Company filed a shelf registration statement on Form S-3 with the SEC, which became effective on September 24, 2020, and contains two prospectuses: a base prospectus, which covers the offering, issuance and sale by the Company of up to $75,000,000 of its common stock, preferred stock, debt securities, warrants to purchase our common stock, preferred stock or debt securities, subscription rights to purchase its common stock, preferred stock or debt securities and/or units consisting of some or all of these securities; and an at-the-market (“ATM”) sales agreement prospectus supplement covering the offering, or the ATM Program, issuance and sale by the Company of up to a maximum aggregate offering price of $40,000,000 of its common stock that may be issued and sold under that certain sales agreement. The $40,000,000 of common stock that may be offered, issued and sold under the sales agreement prospectus is included in the $75,000,000 of the Company’s securities that may be offered, issued and sold by the Company under the base prospectus. Pursuant to this shelf registration statement, the Company sold shares which raised net proceeds of $38,832,711 (net of $1,167,289 in issuance costs) during the third and fourth quarters of 2020. The ATM Program was completed as of the end of 2020 and no further securities were sold during the three months ended March 31, 2021. Common Stock Outstanding Our outstanding common shares typically include shares that are deemed delivered under US GAAP. Shares that are deemed delivered currently include shares that have vested, but have not yet been delivered, under tax-deferred equity awards, as well as shares purchased under our Employee Stock Purchase Program (“ESPP”) where actual transfer of shares normally occurs a few days after the completion of the purchase periods. There are no voting rights for shares that are deemed delivered under US GAAP until the actual delivery of shares takes place. On July 24, 2020, the stockholders of the Company approved an increase of the authorized share capital of the Company from 50,000,000 to 200,000,000 shares of common stock.

Stock Based Compensation

Stock Based Compensation	3 Months Ended
	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock Based Compensation	Note 6 – Stock-Based Compensation Equity Incentive Plans 2013 Equity Incentive Plan Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the 2013 Equity Incentive Plan to increase the number of shares reserved for issuance thereunder by 1,200,000 shares, bringing to 7,285,967 the total number of shares approved for issuance under that plan. As of March 31, 2021, 930,611 shares of common stock remain eligible to be issued through equity-based instruments under the 2013 Equity Incentive Plan. 2014 Non-Employee Equity Compensation Plan Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the 2014 Non-employee Equity Compensation Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 800,000 shares, bringing to 1,650,000 the total number of shares approved for issuance under that plan. Note 6 – Stock-Based Compensation, continued Equity Incentive Plans, continued As of March 31, 2021, 873,971 shares of common stock remain eligible to be issued through equity-based instruments under the 2014 Non-Employee Equity Compensation Plan. 2015 Performance Share Unit Plan Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the 2015 Performance Share Unit Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 700,000 shares, bringing to 3,410,104 the total number of shares approved for issuance under that plan. As of March 31, 2021, 681,238 shares of common stock remain eligible to be issued through equity-based instruments under the 2015 Performance Share Unit Plan. 2017 Equity Inducement Plan On December 28, 2017, the Board approved the 2017 Equity Inducement Plan. Under the plan, the Board reserved 600,000 shares for the grant of RSUs. These grants will be administered by the Board or a committee of the Board. These awards will be granted to individuals who (a) are being hired as an employee by the Company or any subsidiary and such award is a material inducement to such person being hired; (b) are being rehired as an employee following a bona fide period of interruption of employment with the Company or any subsidiary; or (c) will become an employee of the Company or any subsidiary in connection with a merger or acquisition. As of March 31, 2021, 143,336 shares of common stock remain available to be issued through equity-based instruments under the 2017 Equity Inducement Plan. Employee Stock Purchase Plan In April 2015, the Company’s Board approved the ESPP, under which 600,000 shares of common stock have been reserved for purchase by the Company’s employees, subject to the approval by the stockholders. On May 21, 2015, the Company’s stockholders approved the ESPP. Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the Employee Stock Purchase Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 250,000 shares, bring to 850,000 the total number of shares approved for issuance under that plan. Under the ESPP, employees may designate an amount not less than 1% but not more than 10% of their annual compensation for the purchase of Company shares. No more than 7,500 shares may be purchased by an employee under the ESPP during an offering period. An offering period shall be six months in duration commencing on or about January 1 and July 1 of each year. The exercise price of the option will be the lesser of 85% of the fair market of the common stock on the first business day of the offering period and 85% of the fair market value of the common stock on the applicable exercise date. As of March 31, 2021, 140,438 shares of common stock remain eligible to be issued under the ESPP. Employees contributed $117,013 through payroll withholdings as of March 31, 2021 to the ESPP for the current offering period that will end on June 30, 2021 and shares will be deemed delivered on that date. Note 6 – Stock-Based Compensation, continued Stock Option Activity The following is a summary of the Company’s stock option activity during the three months ended March 31, 2021: Number of Options Weighted Average Exercise Price Weighted Average Remaining Life In Years Intrinsic Value Outstanding at January 1, 2021 550,985 $ 5.67 3.2 $ 3,384 Granted – – – – Exercised – – – – Forfeited – – – – Outstanding at March 31, 2021 550,985 $ 5.67 2.9 $ 78,694 Exercisable at January 1, 2021 550,985 $ 5.67 3.2 $ 3,384 Vested – – – – Exercised – – – – Forfeited – – – – Exercisable at March 31, 2021 550,985 $ 5.67 2.9 $ 78,694 As of March 31, 2021, the unamortized value of options was $0. Restricted Stock Units (“RSUs”) During the three months ended March 31, 2021, the Compensation Committee granted various employees RSUs covering 941,635 shares of common stock under the 2013 Equity Incentive Plan. The awards vest over terms ranging from two to three years. During the three months ended March 31, 2021, the Compensation Committee and the Board of Directors granted various non-employees RSUs covering 125,000 shares of common stock under the 2014 Non-employee Equity Compensation Plan. The awards vest over one year. As of t h un am or ti ze v a l u o t h R a $ T h un am or ti ze am oun il b e xp e n e ov e weighted average p e r i o o 1.6 y ea r Total Weighted Average Grant Date Fair Value Outstanding at January 1, 2021 1,421,168 $ 6.43 RSUs granted 1,066,635 $ 3.81 RSUs forfeited (9,137 ) $ 9.97 RSUs vested (627,412 ) $ 7.33 Outstanding at March 31, 2021 1,851,254 $ 4.60 Note 6 – Stock-Based Compensation, continued Performance Share Units (“PSUs”) Performance share units (“PSUs”) are grants that vest upon the achievement of certain performance goals. The goals are commonly related to the Company’s revenue, market capitalization or market share price of the common stock. During the three months ended March 31, 2021, the Compensation Committee of the Board of Directors granted various employees PSUs covering 1,450,713 shares of common stock under the Company’s 2015 Performance Share Unit Plan. Amortization for all PSU awards was $0 and $(88,348) for the three months ended March 31, 2021 and 2020, respectively. A summary of the activity related to PSUs for the three months ended March 31, 2021 is presented below: Total Weighted Average Grant Date Fair Value Outstanding at January 1, 2021 – $ – PSUs granted 1,450,713 4.51 PSUs forfeited – – PSUs vested – – Outstanding at March 31, 2021 1,450,713 4.51 Employee Stock Purchase Plan (“ESPP”) The current offering period under the ESPP started on January 1, 2021 and will conclude on June 30, 2021. During the year ended December 31, 2020, there were two offering periods. The first offering period began January 1, 2020 and concluded on June 30, 2020. The second offering period began on July 1, 2020 and concluded on December 31, 2020. The weighted-average grant-date fair value of the purchase option for each designated share purchased under this plan was approximately $0.75 and $0.57 for the three months ended March 31, 2021 and 2020, respectively, which represents the fair value of the option, consisting of three main components: (i) the value of the discount on the enrollment date, (ii) the proportionate value of the call option for 85% of the stock and (iii) the proportionate value of the put option for 15% of the stock. The Company recognized compensation expense for the plan of $57,316 and $42,827 for the three months ended March 31, 2021 and 2020, respectively. The Company estimated the fair value of ESPP purchase options granted during the three months ended March 31, 2021 and 2020 using the Black-Scholes option pricing model. The fair values of stock options granted were estimated using the following assumptions: Three Months Ended March 31, 2021 Three Months Ended March 31, 2020 Stock price $ 1.80 $ 1.77 Dividend yield 0% 0% Expected volatility 95 % 61 % Risk-free interest rate 0.09 % 1.57 % Expected life 6 months 6 months Note 6 – Stock-Based Compensation, continued Stock-Based Compensation Expense The following tables summarize total stock-based compensation costs recognized for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 RSUs 2,088,910 $ 2,321,820 PSUs – (88,348 ) ESPP 57,316 42,827 Total $ 2,146,226 $ 2,276,299 The total amount of stock-based compensation was reflected within the statements of operations as: Three Months Ended September 30, 2021 2020 Research and development $ 1,149,277 $ 1,100,978 Sales and marketing 448,947 364,458 General and administrative 548,002 810,863 Total $ 2,146,226 $ 2,276,299

Related Party Transactions

Related Party Transactions	3 Months Ended
	Mar. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Note 7 – Related Party Transactions In November 2016, the Company and Dialog entered into an alliance agreement for the manufacture, distribution and commercialization of products incorporating the Company’s wire-free charging technology (See Note 4 – Commitments and Contingencies, Strategic Alliance Agreement

Customer Concentrations

Customer Concentrations	3 Months Ended
	Mar. 31, 2021
Risks And Uncertainties [Abstract]
Customer Concentrations	Note 8 – Customer Concentrations One customer accounted for approximately 69% of the Company’s revenue for the three months ended March 31, 2021, and two customers accounted for approximately 82% of the Company’s revenue for the three months ended March 31, 2020. One customer accounted for approximately 64% of the accounts receivable balance as of March 31, 2021. Four customers accounted for approximately 92% of the accounts receivable balance as of December 31, 2020.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying financial statements are presented in U.S. dollars and have been prepared in accordance with accounting principles generally accepted in the United States of America (“US GAAP”), and pursuant to the accounting and disclosure rules and regulations of the U.S. Securities and Exchange Commission (“SEC”). These unaudited condensed interim financial statements should be read in conjunction with the audited financial statements and notes thereto for the fiscal year ended December 31, 2020 included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the SEC on March 24, 2021. The accounting policies used in preparing these unaudited condensed interim financial statements are consistent with those described in the Company’s December 31, 2020 audited financial statements .
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date of the financial statements as well as the reported expenses during the reporting periods. The Company’s significant estimates and assumptions include the valuation of stock-based compensation instruments, recognition of revenue, the useful lives of long-lived assets, and income tax expense. Some of these judgments can be subjective and complex, and, consequently, actual results may differ from these estimates. Although the Company believes that its estimates and assumptions are reasonable, they are based upon information available at the time the estimates and assumptions were made. Actual results could differ from those estimates.
Cash and Cash Equivalents	Cash and Cash Equivalents The Company considers all short-term, highly liquid investments with an original maturity at the date of purchase of three months or less to be cash equivalents. The Company maintains cash balances that may be uninsured or in deposit accounts that exceed Federal Deposit Insurance Corporation limits. The Company maintains its cash deposits with major financial institutions.
Revenue Recognition	Revenue Recognition On January 1, 2018, the Company adopted Accounting Standards Update No. 2014-09, "Revenue from Contracts with Customers" (Topic 606). In accordance with Topic 606, the Company recognizes revenue using the following five-step approach: 1. Identify the contract with a customer. 2. Identify the performance obligations in the contract. 3. Determine the transaction price of the contract. 4. Allocate the transaction price to the performance obligations in the contract. 5. Recognize revenue when the performance obligations are met or delivered. The Company’s revenue primarily consists of product development projects revenue and royalty revenue from Dialog. The Company also provides contract services for Dialog. During the three months ended March 31, 2021, the Company recognized $145,065 in product development projects revenue, $0 in royalty revenue and $0 in contract services revenue. During the three months ended March 31, 2020, the Company recognized $20,850 in product development projects revenue, $0 in royalty revenue and $40,625 in contract services revenue. The Company records revenue associated with product development projects that it enters into with certain customers. In general, these product development projects are complex, and the Company does not have certainty about its ability to achieve the project milestones. The achievement of a milestone is dependent on the Company’s performance obligation and requires acceptance by the customer. The Company recognizes this revenue at a point in time based on when the performance obligation is met. The payment associated with achieving the performance obligation is generally commensurate with the Company’s effort or the value of the deliverable and is nonrefundable. The Company records the expenses related to these product development projects in research and development expense, in the periods such expenses were incurred. The Company records royalty revenue from its manufacturing partner, Dialog, and such royalty revenue is recognized at a point in time based on shipments from Dialog to its customers. The Company recognizes contract services revenue from Dialog over the period of time that the services are performed. The costs associated with this revenue are recognized as the services are performed and are included in cost of services revenue.
Research and Development	Research and Development Research and development expenses are charged to operations as incurred. For internally developed patents, all patent application costs are expensed as incurred as research and development expense. Patent application costs, which are generally legal costs, are expensed as research and development costs until such time as the future economic benefits of such patents become more certain. The Company incurred research and development costs of $4,591,244 and $4,575,303 for the three months ended March 31, 2021 and 2020, respectively.
Stock-Based Compensation	Stock-Based Compensation The Company accounts for equity instruments issued to employees, board members and contractors in accordance with accounting guidance that requires awards to be recorded at their fair value on the date of grant and are amortized over the vesting period of the award. The Company recognizes compensation costs on a straight-line basis over the requisite service period of the award, which is typically the vesting term of the equity instrument issued. Under the Company’s Employee Stock Purchase Plan (“ESPP”), employees may purchase a limited number of shares of the Company’s common stock at a 15% discount from the lower of the closing market prices measured on the first and last days of each half-year period. The Company recognizes stock-based compensation expense for the fair value of the purchase options, as measured on the grant date.
Income Taxes	Income Taxes Tax benefits are recognized only for tax positions that are more likely than not to be sustained upon examination by tax authorities. The amount recognized is measured as the largest amount of benefit that is greater than 50 percent likely to be realized upon settlement. A liability for “unrecognized tax benefits” is recorded for any tax benefits claimed in the Company’s tax returns that do not meet these recognition and measurement standards. As of March 31, 2021, no liability for unrecognized tax benefits was required to be reported. The guidance also discusses the classification of related interest and penalties on income taxes. The Company’s policy is to record interest and penalties on uncertain tax positions as a component of income tax expense. No interest or penalties were recorded during the three months ended March 31, 2021 or 2020. The Company files income tax returns with the United States and California governments.
Net Loss Per Common Share	Net Loss Per Common Share Basic net loss per share is computed by dividing net loss available to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share is computed using the weighted average number of common shares and, if dilutive, potential common shares outstanding during the period. Potential common shares consist of the incremental common shares issuable upon the exercise of stock options and warrants (using the treasury stock method), the vesting of restricted stock units (“RSUs”) and performance stock units (“PSUs”) and the enrollment of employees in the ESPP. The computation of diluted loss per share excludes potentially dilutive securities of 7,137,741 and 7,206,004 for the three months ended March 31, 2021 and 2020, respectively, because their inclusion would be anti-dilutive. Potentially dilutive securities outlined in the table below have been excluded from the computation of diluted net loss per share because the effect of their inclusion would have been anti-dilutive. For the Three Months Ended March 31, 2021 2020 Warrant issued to private investors 3,284,789 3,938,802 Options to purchase common stock 550,985 550,985 RSUs 1,851,254 2,048,540 PSUs 1,450,713 667,677 Total potentially dilutive securities 7,137,741 7,206,004
Leases	Leases As of January 1, 2019, the Company determines if an arrangement is a lease at the inception of the arrangement. The Company applies the short-term lease recognition exemption and recognizes lease payments in profit or loss at lease commencement for facility or equipment leases that have a lease term of 12 months or less and do not include a purchase option whose exercise is reasonably certain. Operating leases are included in operating lease right-of-use (ROU) assets and operating lease liabilities. ROU assets represent the right to use an underlying asset for the lease term, and lease liabilities represent the obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are measured and recorded at the later of the adoption date, January 1, 2019, or the service commencement date based on the present value of lease payments over the lease term. The Company uses the implicit interest rate when readily determinable; however, most leases do not establish an implicit rate, so the Company uses an estimate of the incremental borrowing rate based on the information available at the time of measurement. Lease expense for lease payments is recognized on a straight-line basis over the lease term. See Note 4 – Commitments and Contingencies, Operating Leases
Recent Accounting Pronouncements	Recent Accounting Pronouncements In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740),” Simplifying the Accounting for Income Taxes
Management's Evaluation of Subsequent Events	Management’s Evaluation of Subsequent Events The Company evaluates events that have occurred after the balance sheet date of March 31, 2021, through the date which the financial statements are available to be issued.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	Potentially dilutive securities outlined in the table below have been excluded from the computation of diluted net loss per share because the effect of their inclusion would have been anti-dilutive. For the Three Months Ended March 31, 2021 2020 Warrant issued to private investors 3,284,789 3,938,802 Options to purchase common stock 550,985 550,985 RSUs 1,851,254 2,048,540 PSUs 1,450,713 667,677 Total potentially dilutive securities 7,137,741 7,206,004

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized	A reconciliation of undiscounted cash flows to lease liabilities recognized as of March 31, 2021 is as follows: Amount (unaudited) 2021 640,407 2022 584,469 Total future lease payments 1,224,876 Present value discount (4% weighted average) (32,895 ) Total operating lease liabilities 1,191,981

Stock Based Compensation (Table

Stock Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Summary of Stock Option Activity	The following is a summary of the Company’s stock option activity during the three months ended March 31, 2021: Number of Options Weighted Average Exercise Price Weighted Average Remaining Life In Years Intrinsic Value Outstanding at January 1, 2021 550,985 $ 5.67 3.2 $ 3,384 Granted – – – – Exercised – – – – Forfeited – – – – Outstanding at March 31, 2021 550,985 $ 5.67 2.9 $ 78,694 Exercisable at January 1, 2021 550,985 $ 5.67 3.2 $ 3,384 Vested – – – – Exercised – – – – Forfeited – – – – Exercisable at March 31, 2021 550,985 $ 5.67 2.9 $ 78,694
Schedule of Restricted Stock Units Activity	A summary of the activity related to RSUs for the three months ended March 31, 2021 is presented below: Total Weighted Average Grant Date Fair Value Outstanding at January 1, 2021 1,421,168 $ 6.43 RSUs granted 1,066,635 $ 3.81 RSUs forfeited (9,137 ) $ 9.97 RSUs vested (627,412 ) $ 7.33 Outstanding at March 31, 2021 1,851,254 $ 4.60
Summary of Activity Related to PSUs	A summary of the activity related to PSUs for the three months ended March 31, 2021 is presented below: Total Weighted Average Grant Date Fair Value Outstanding at January 1, 2021 – $ – PSUs granted 1,450,713 4.51 PSUs forfeited – – PSUs vested – – Outstanding at March 31, 2021 1,450,713 4.51
Summary of Fair Values of Stock Options Granted	The fair values of stock options granted were estimated using the following assumptions: Three Months Ended March 31, 2021 Three Months Ended March 31, 2020 Stock price $ 1.80 $ 1.77 Dividend yield 0% 0% Expected volatility 95 % 61 % Risk-free interest rate 0.09 % 1.57 % Expected life 6 months 6 months
Summary of Stock-based Compensation Costs Recognized	The following tables summarize total stock-based compensation costs recognized for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 RSUs 2,088,910 $ 2,321,820 PSUs – (88,348 ) ESPP 57,316 42,827 Total $ 2,146,226 $ 2,276,299
Summary of Stock-based Compensation Reflected within Statements of Operations	The total amount of stock-based compensation was reflected within the statements of operations as: Three Months Ended September 30, 2021 2020 Research and development $ 1,149,277 $ 1,100,978 Sales and marketing 448,947 364,458 General and administrative 548,002 810,863 Total $ 2,146,226 $ 2,276,299

Liquidity and Management Plans

Liquidity and Management Plans - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Liquidity And Management Plans [Line Items]
Engineering product development	$ 145,065	$ 61,475
Net loss	(8,525,763)	(8,597,736)
Net cash provided by (used in) operating activities	(5,976,550)	(7,340,111)
Proceeds of securities offerings		5,506,880	$ 53,556,202
Cash and cash equivalents, at carrying value, total	44,758,397		$ 50,729,661
Technology Service [Member]
Liquidity And Management Plans [Line Items]
Engineering product development	$ 145,065	$ 61,475

Significant Accounting Policies

Significant Accounting Policies - Additional Information (Detail) - USD ($)	Apr. 30, 2015	Mar. 31, 2021	Mar. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Revenue		$ 145,065	$ 61,475
Research and development expense, total		4,591,244	4,575,303
Liability for unrecognized tax benefits		0
Interest or penalties for uncertain tax positions		$ 0	$ 0
Antidilutive securities excluded from computation of earnings per share, amount		7,137,741	7,206,004
Employee Stock Purchase Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Common stock purchase price discount percentage	85.00%	15.00%
Product Development Projects Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue		$ 145,065	$ 20,850
Royalty Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue		0	0
Contract Services Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Revenue		$ 0	$ 40,625

Summary of Significant Accoun_4

Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Detail) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	7,137,741	7,206,004
Warrant Issued to Private Investors [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	3,284,789	3,938,802
Employee Stock Option [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	550,985	550,985
Restricted Stock Units (RSUs) [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	1,851,254	2,048,540
Performance Share Units [Member]
Summary Of Significant Accounting Policies [Line Items]
Total potentially dilutive securities	1,450,713	667,677

Commitments and Contingencies -

Commitments and Contingencies - Operating Leases - Additional Information (Detail) - USD ($)	1 Months Ended
	Oct. 31, 2019	Mar. 31, 2021	Dec. 31, 2020	Jul. 15, 2019	Jul. 01, 2019	Jan. 01, 2019
Commitments And Contingencies [Line Items]
Operating lease right-of-use assets		$ 1,097,377	$ 1,293,291
Operating lease liabilities		805,557	825,431
Total operating lease payments		1,224,876
Long-term portion of operating lease liabilities		386,424	$ 576,762
ASU No. 2016-02 [Member]
Commitments And Contingencies [Line Items]
Operating lease right-of-use assets		1,097,377				$ 414,426
Operating lease liabilities		805,557				$ 485,747
Total operating lease payments		1,224,876
Long-term portion of operating lease liabilities		$ 386,424
Weighted average remaining lease term		1 year 4 months 24 days
San Jose, California [Member]
Commitments And Contingencies [Line Items]
Operating lease, renewal term					3 years
Operating lease payment	$ 52,970
San Jose, California [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Maximum monthly lease payment	64,941
Costa Mesa, California [Member]
Commitments And Contingencies [Line Items]
Operating lease, renewal term				2 years
Operating lease payment	9,773
Costa Mesa, California [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Maximum monthly lease payment	$ 10,200

Commitments and Contingencies_2

Commitments and Contingencies - Schedule of Reconciliation of Undiscounted Cash Flows to Lease Liabilities Recognized (Detail)	Mar. 31, 2021USD ($)
Operating Leases Future Minimum Payments Due [Abstract]
2021	$ 640,407
2022	584,469
Total future lease payments	1,224,876
Present value discount (4% weighted average)	(32,895)
Total operating lease liabilities	$ 1,191,981

Commitments and Contingencies_3

Commitments and Contingencies - Hosted Design Software Agreement - Additional Information (Detail) - Hosted Design Software Agreement [Member] - USD ($)	Dec. 18, 2015	Jun. 25, 2015	Jul. 31, 2018	Jul. 31, 2015
Commitments And Contingencies [Line Items]
Initial term of agreement		3 years
Quarterly payments for service agreement	$ 198,000		$ 218,000	$ 101,000
Additional term of agreement			3 years

Commitments and Contingencies_4

Commitments and Contingencies - MBO Bonus Plan - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accrued Expenses [Member] | Executive Officers [Member]
Commitments And Contingencies [Line Items]
Accrued bonus expense	$ 391,578	$ 284,591

Commitments and Contingencies_5

Commitments and Contingencies - Employee Agreement - Stephen Rizzone - Additional Information (Detail) - Mr. Rizzone [Member] - USD ($)	Jan. 01, 2015	Mar. 31, 2021
Commitments And Contingencies [Line Items]
Agreement effective date	Jan. 1, 2015
Initial term of agreement	4 years
Officers' compensation		$ 365,000
Employment agreement percentage of base salary		100.00%

Commitments and Contingencies_6

Commitments and Contingencies - Strategic Alliance Agreement - Additional Information (Detail)	1 Months Ended
	Nov. 30, 2016
Strategic Alliance Agreement [Member]
Commitments And Contingencies [Line Items]
Initial term of agreement	7 years

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Detail)	Sep. 24, 2020USD ($)	Aug. 17, 2018USD ($)	Mar. 31, 2019USD ($)$ / sharesshares	Mar. 31, 2021Voteshares	Dec. 31, 2020USD ($)shares	Sep. 30, 2020USD ($)	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Jul. 24, 2020shares
Class of Stock [Line Items]
Number of common stock voting entitlement per share | Vote				1
Proceeds from private offering of shares of common stock and warrants			$ 23,319,156
Net of issuance costs from offering of shares			$ 1,680,844				$ 236,528	$ 141,322	$ 339,081
Class of warrant or right, number of securities called by warrants or rights | shares			1,666,666
Class of warrant or right, exercise price of warrants or rights | $ / shares			$ 10
Proceeds from at the market offering of shares of common stock and warrants							$ 9,216,611	5,506,880	$ 4,557,693
Common stock outstanding abstract					Our outstanding common shares typically include shares that are deemed delivered under US GAAP. Shares that are deemed delivered currently include shares that have vested, but have not yet been delivered, under tax-deferred equity awards, as well as shares purchased under our Employee Stock Purchase Program (“ESPP”) where actual transfer of shares normally occurs a few days after the completion of the purchase periods. There are no voting rights for shares that are deemed delivered under US GAAP until the actual delivery of shares takes place. On July 24, 2020, the stockholders of the Company approved an increase of the authorized share capital of the Company from 50,000,000 to 200,000,000 shares of common stock.
Common stock, shares authorized | shares				200,000,000	200,000,000
Accounting issuance costs will be paid	$ 1,167,289
At-the-market ("ATM") funds receivable					$ 38,832,711	$ 38,832,711
Securities Sold under Agreement, Shares | shares				0
Maximum [Member]
Class of Stock [Line Items]
Securities reserved for issuance	$ 75,000,000
Common stock, shares authorized | shares										200,000,000
Minimum [Member]
Class of Stock [Line Items]
Common stock, shares authorized | shares										50,000,000
Common Stock [Member]
Class of Stock [Line Items]
Proceeds from at the market offering of shares of common stock and warrants								$ 44
Consummation of Offering Under Shelf Registration [Member]
Class of Stock [Line Items]
Proceeds from shelf registration debt or equity securities		$ 75,000,000
At-the-Market (“ATM”) Sales Agreement [Member]
Class of Stock [Line Items]
Sale of stock, Description	The $40,000,000 of common stock that may be offered, issued and sold under the sales agreement prospectus is included in the $75,000,000 of the Company’s securities that may be offered, issued and sold by the Company under the base prospectus.
At-the-Market (“ATM”) Sales Agreement [Member] | Maximum [Member]
Class of Stock [Line Items]
Proceeds from (Payments for) in Securities Sold under Agreements	$ 40,000,000

Stock Based Compensation - Equi

Stock Based Compensation - Equity Incentive Plan - Additional Information (Detail) - USD ($)	Apr. 30, 2015	Mar. 31, 2021	May 26, 2020	Dec. 28, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee contribution through payroll withholdings		$ 117,013
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			850,000
Common stock, capital shares reserved for future issuance	600,000		250,000
Common stock remain eligible to be issued		140,438
Lowest percentage of annual compensation to be utilized by an employee for purchase of shares under the plan	1.00%
Highest percentage of annual compensation to be utilized by an employee for purchase of shares under the plan	10.00%
Maximum number of shares permitted to purchase	7,500
Offering period	6 months
Exercise price discount from fair value on offering date	85.00%
Exercise price discount from fair value on exercise date	85.00%	15.00%
Share-based compensation arrangement by share-based payment award, terms of award		In April 2015, the Company’s Board approved the ESPP, under which 600,000 shares of common stock have been reserved for purchase by the Company’s employees, subject to the approval by the stockholders. On May 21, 2015, the Company’s stockholders approved the ESPP. Effective on May 26, 2020, the Company’s stockholders approved the amendment and restatement of the Employee Stock Purchase Plan to increase the number of shares reserved for issuance through equity-based instruments thereunder by 250,000 shares, bring to 850,000 the total number of shares approved for issuance under that plan. Under the ESPP, employees may designate an amount not less than 1% but not more than 10% of their annual compensation for the purchase of Company shares. No more than 7,500 shares may be purchased by an employee under the ESPP during an offering period. An offering period shall be six months in duration commencing on or about January 1 and July 1 of each year. The exercise price of the option will be the lesser of 85% of the fair market of the common stock on the first business day of the offering period and 85% of the fair market value of the common stock on the applicable exercise date.
2013 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			7,285,967
Common stock, capital shares reserved for future issuance			1,200,000
Common stock remain eligible to be issued		930,611
Non-Employee Equity Compensation Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			1,650,000
Common stock, capital shares reserved for future issuance			800,000
Common stock remain eligible to be issued		873,971
2015 Performance Share Unit Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares authorized for issuance			3,410,104
Common stock, capital shares reserved for future issuance			700,000
Common stock remain eligible to be issued		681,238
2017 Equity Inducement Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock remain eligible to be issued		143,336
2017 Equity Inducement Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance				600,000

Stock Based Compensation - Summ

Stock Based Compensation - Summary of Stock Option Activity (Detail) - Employee Stock Option [Member] - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding	550,985
Number of Options, Granted	0
Number of Options, Exercised	0
Number of Options, Forfeited	0
Number of Options, Outstanding	550,985	550,985
Number of Options, Exercisable	550,985
Number of Options, Vested	0
Number of Options, Exercised	0
Number of Options, Forfeited	0
Number of Options, Exercisable	550,985	550,985
Weighted Average Exercise Price, Outstanding	$ 5.67
Weighted Average Exercise Price, Granted	0
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited	0
Weighted Average Exercise Price, Outstanding	5.67	$ 5.67
Weighted Average Exercise Price, Exercisable	5.67
Weighted Average Exercise Price, Vested	0
Weighted Average Exercise Price, Exercised	0
Weighted Average Exercise Price, Forfeited	0
Weighted Average Exercise Price, Exercisable	$ 5.67	$ 5.67
Weighted Average Remaining Life In Years, Outstanding	2 years 10 months 24 days	3 years 2 months 12 days
Weighted Average Remaining Life In Years, Exercisable	2 years 10 months 24 days	3 years 2 months 12 days
Intrinsic Value, Outstanding	$ 78,694	$ 3,384
Intrinsic Value, Exercisable	$ 78,694	$ 3,384

Stock Based Compensation - Stoc

Stock Based Compensation - Stock Option Award Activity - Additional Information (Detail)	Mar. 31, 2021USD ($)
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation not yet recognized, stock options	$ 0

Stock Based Compensation - Rest

Stock Based Compensation - Restricted Stock Units - Additional Information (Detail) - Restricted Stock Units (RSUs) [Member]	3 Months Ended
	Mar. 31, 2021USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee service share-based compensation, nonvested awards, compensation not yet recognized, share-based awards other than options | $	$ 6,355,220
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition	1 year 7 months 6 days
2013 Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	2 years
2013 Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	3 years
2013 Equity Incentive Plan [Member] | Employee [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	941,635
Non-Employee Equity Compensation Plan 2014 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award vesting period	1 year
Non-Employee Equity Compensation Plan 2014 [Member] | Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	125,000

Stock Based Compensation - Sche

Stock Based Compensation - Schedule of Restricted Stock Units Activity (Detail) - Restricted Stock Units (RSUs) [Member]	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding | shares	1,421,168
RSUs granted | shares	1,066,635
RSUs forfeited | shares	(9,137)
RSUs vested | shares	(627,412)
Number of Options, Outstanding | shares	1,851,254
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 6.43
Weighted Average Grant Date Fair Value, RSUs granted | $ / shares	3.81
Weighted Average Grant Date Fair Value, RSUs forfeited | $ / shares	9.97
Weighted Average Grant Date Fair Value, RSUs vested | $ / shares	7.33
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 4.60

Stock Based Compensation - Perf

Stock Based Compensation - Performance Share Units - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated share-based compensation expense	$ (88,348)	$ 0
2015 Performance Share Unit Plan [Member] | Employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period	1,450,713

Stock Based Compensation - Su_2

Stock Based Compensation - Summary of Activity Related to PSUs (Detail) - Performance Shares [Member]	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options, Outstanding | shares	0
PSUs granted | shares	1,450,713
PSUs forfeited | shares	0
PSUs / DSUs vested | shares	0
Number of Options, Outstanding | shares	1,450,713
Weighted Average Grant Date Fair Value, Beginning Balance | $ / shares	$ 0
Weighted Average Grant Date Fair Value, PSUs granted | $ / shares	4.51
Weighted Average Grant Date Fair Value, PSUs forfeited | $ / shares	0
Weighted Average Grant Date Fair Value, PSUs vested | $ / shares	0
Weighted Average Grant Date Fair Value, Ending Balance | $ / shares	$ 4.51

Stock Based Compensation - Empl

Stock Based Compensation - Employee Stock Purchase Plan - Additional Information (Detail) - Employee Stock Purchase Plan [Member] - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value	$ 0.75	$ 0.57
Percentage of proportionate value of call option of stock	85.00%
Percentage of proportionate value of put option of stock	15.00%
Allocated share-based compensation expense	$ 57,316	$ 42,827

Stock Based Compensation - Su_3

Stock Based Compensation - Summary of Fair Values of Stock Options Granted (Detail) - Employee Stock Purchase Plan [Member] - Employee Stock Option [Member] - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock price	$ 1.80	$ 1.77
Dividend yield	0.00%	0.00%
Expected volatility	95.00%	61.00%
Risk-free interest rate	0.09%	1.57%
Expected life	6 months	6 months

Stock Based Compensation -Summa

Stock Based Compensation -Summary of Stock-based Compensation Costs Recognized (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total	$ 2,146,226	$ 2,146,226	$ 2,276,299	$ 2,276,299
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense		2,088,910		2,321,820
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense		0		(88,348)
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense		$ 57,316		$ 42,827

Stock Based Compensation - Su_4

Stock Based Compensation - Summary of Stock-based Compensation Reflected within Statements of Operations (Detail) - USD ($)	3 Months Ended
	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Share-based Compensation, Total	$ 2,146,226	$ 2,146,226	$ 2,276,299	$ 2,276,299
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense	1,149,277		1,100,978
Selling and Marketing Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense	448,947		364,458
General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Allocated share-based compensation expense	$ 548,002		$ 810,863

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		8 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Jun. 28, 2017	Mar. 31, 2019
Related Party Transaction [Line Items]
Class of warrant or right, number of securities called by warrants or rights				1,666,666
Cost of services revenue		$ 39,544
Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Equity method investment, ownership percentage	2.80%
Warrants outstanding	0
Contract Services [Member] | Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Revenue	$ 0	40,625
Cost of services revenue	0	39,544
Strategic Alliance Agreement [Member] | Royalty Revenue [Member]
Related Party Transaction [Line Items]
Revenue	$ 0	$ 0
Private Placements [Member] | Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Stock issued during period, shares, new issues			1,739,691
Private Placements [Member] | Warrant Issued to Private Investors [Member] | Dialog Semiconductor Plc [Member]
Related Party Transaction [Line Items]
Class of warrant or right, number of securities called by warrants or rights			1,417,565

Customer Concentrations - Addit

Customer Concentrations - Additional Information (Detail) - Customer Concentration Risk [Member] - Customer	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Revenues [Member]
Concentration Risk [Line Items]
Number of customers	1	2
Concentration percentage	69.00%	82.00%
Accounts Receivable [Member]
Concentration Risk [Line Items]
Number of customers	1		4
Concentration percentage	64.00%		92.00%