Rubicon Technology (RBCN) 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	Apr. 30, 2021
Document Information Line Items
Entity Registrant Name	Rubicon Technology, Inc.
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Entity Common Stock, Shares Outstanding		2,438,855
Amendment Flag	false
Entity Central Index Key	0001410172
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity File Number	001-33834
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 10,571	$ 11,130
Short-term investments	14,749	14,748
Accounts receivable, net	389	386
Inventories	1,046	1,073
Other inventory supplies	138	140
Prepaid expenses and other current assets	253	284
Assets held for sale	529	529
Total current assets	27,675	28,290
Inventories, non-current	468	468
Property and equipment, net	2,441	2,482
Total assets	30,584	31,240
Liabilities and stockholders’ equity
Accounts payable	309	497
Accrued payroll	153	211
Accrued and other current liabilities	385	201
Corporate income and franchise taxes	329	307
Accrued real estate taxes	90	71
Advance payments	11	18
Total current liabilities	1,277	1,305
Total liabilities	1,277	1,305
Commitments and contingencies (Note 7)
Stockholders’ equity
Preferred stock, $.001 par value, 1,000,000 undesignated shares authorized, no shares issued or outstanding
Common stock, $.001 par value, 8,200,000 shares authorized; 2,987,883 and 2,971,283 shares issued; 2,438,855 and 2,422,255 shares outstanding, respectively	29	29
Additional paid-in capital	376,635	376,456
Treasury stock, at cost, 549,028 and 549,028 shares	(15,147)	(15,147)
Accumulated other comprehensive income
Accumulated deficit	(332,210)	(331,403)
Total stockholders’ equity	29,307	29,935
Total liabilities and stockholders’ equity	$ 30,584	$ 31,240

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock par value (in Dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value (in Dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	8,200,000	8,200,000
Common stock, shares issued	2,987,883	2,971,283
Common stock, shares outstanding	2,438,855	2,422,255
Treasury stock, shares	549,028	549,028

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenue	$ 729	$ 1,160
Cost of goods sold	583	812
Gross profit	146	348
Operating expenses:
General and administrative	875	584
Sales and marketing	79	87
Loss from operations	(808)	(323)
Other income:
Interest income	1	74
Realized gain (loss) on investments		(1,786)
Realized gain (loss) on foreign currency translation		(14)
Unrealized gain (loss) on equity investments		(156)
Total other income (loss)	1	(1,882)
Loss before income taxes	(807)	(2,205)
Income tax expense		(4)
Net loss	$ (807)	$ (2,209)
Net loss per common share
Basic (in Dollars per share)	$ (0.33)	$ (0.84)
Diluted (in Dollars per share)	$ (0.33)	$ (0.84)
Weighted average common shares outstanding used in computing net loss per common share
Basic (in Shares)	2,430,555	2,629,467
Diluted (in Shares)	2,430,555	2,629,467

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (807)	$ (2,209)
Other comprehensive loss:
Unrealized gain on investments, net of taxes		11
Other comprehensive gain		11
Comprehensive income/(loss)	$ (807)	$ (2,198)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Stockholders’ Equity - USD ($) $ in Thousands	Common stock	Treasury stock	Additional paid-in capital	Accum other comp loss	Accum deficit	Total
Balance at Dec. 31, 2019	$ 29	$ (12,749)	$ 376,306	$ (1)	$ (330,340)	$ 33,245
Balance (in Shares) at Dec. 31, 2019	2,955,253	(253,082)
Stock-based compensation			11			11
Purchase of treasury stock, at cost		$ (1,205)				(1,205)
Purchase of treasury stock, at cost (in Shares)		(146,674)
Unrealized gain on investments, net of tax				11		11
Net loss					(2,209)	(2,209)
Balance at Mar. 31, 2020	$ 29	$ (13,954)	376,317	10	(332,549)	29,853
Balance (in Shares) at Mar. 31, 2020	2,955,253	(399,756)
Balance at Dec. 31, 2020	$ 29	$ (15,147)	376,456		(331,403)	29,935
Balance (in Shares) at Dec. 31, 2020	2,971,283	(549,028)
Stock-based compensation			341			341
Common stock issued, net of shares withheld for employee taxes			(162)			(162)
Common stock issued, net of shares withheld for employee taxes (in Shares)	16,600
Net loss					(807)	(807)
Balance at Mar. 31, 2021	$ 29	$ (15,147)	$ 376,635		$ (332,210)	$ 29,307
Balance (in Shares) at Mar. 31, 2021	2,987,883	(549,028)

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net loss	$ (807)	$ (2,209)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities
Depreciation and amortization	42	42
Unrealized (gain)/loss on equity investments		156
Realized (gain)/loss on equity investments		1,786
Stock-based compensation	341	11
Changes in operating assets and liabilities:
Accounts receivable	(4)	314
Inventories	27	316
Other inventory supplies	1	(1)
Prepaid expenses and other assets	31	29
Accounts payable	(187)	(291)
Accrued payroll	(58)	28
Accrued real estate taxes	19	19
Corporate income and franchise taxes	22	16
Advanced payments	(8)	(16)
Accrued and other current liabilities	184	(62)
Net cash provided by (cash used) by operating activities	(397)	138
Cash flows from investing activities
Purchases of investments	(1)	(1,720)
Proceeds from sale of investments	1	5,180
Net cash provided by investing activities		3,460
Cash flows from financing activities
Taxes paid related to net share settlement of equity awards	(162)
Purchases of treasury stock		(1,205)
Net cash used in financing activities	(162)	(1,205)
Net effect of currency translation
Net increase (decrease) in cash, cash equivalents and restricted cash	(559)	2,393
Cash, cash equivalents and restricted cash, beginning of period	11,130	8,880
Cash, cash equivalents and restricted cash, end of period	$ 10,571	$ 11,273

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
BASIS OF PRESENTATION	1. BASIS OF PRESENTATION Interim financial data The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by GAAP for complete consolidated financial statements and should be read in conjunction with Rubicon Technology, Inc.’s (the “Company”) annual report filed on Form 10-K for the fiscal year ended December 31, 2020. In the opinion of management, all adjustments (consisting only of adjustments of a normal and recurring nature) considered necessary for a fair presentation of the results of operations have been included. Consolidated operating results for the three-month period ended March 31, 2021, are not necessarily indicative of results that may be expected for the year ending December 31, 2021.

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of consolidation The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, Rubicon Technology Worldwide LLC, Rubicon Technology BP LLC, Rubicon Sapphire Technology (Malaysia) SDN BHD and Rubicon DTP LLC. All intercompany transactions and balances have been eliminated in consolidation. Investments The Company invests available cash primarily in U.S. Treasury securities, investment grade commercial paper, FDIC guaranteed certificates of deposit, common stock, preferred stock, equity-related securities and corporate notes. Investments classified as available-for-sale debt securities are carried at fair value with unrealized gains and losses recorded in accumulated other comprehensive income (loss). Investments in common stock, preferred stock and equity-related securities are reported at fair value, with both realized and unrealized gains and losses recorded in other income (expense), in the consolidated statement of operations. Investments in which the Company has the ability and intent, if necessary, to liquidate are classified as short-term. The Company reviews its available-for-sale debt securities investments at the end of each quarter for other-than-temporary declines in fair value based on the specific identification method. The Company considers various factors in determining whether an impairment is other-than-temporary, including the severity and duration of the impairment, changes in underlying credit ratings, forecasted recovery, its ability and intent to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value and the probability that the scheduled cash payments will continue to be made. When the Company concludes that an other-than-temporary impairment has resulted, the difference between the fair value and carrying value is written off and recorded as a charge on the consolidated statement of operations. Accounts receivable The majority of the Company’s accounts receivable is due from defense subcontractors, industrial manufacturers, fabricators and resellers. Credit is extended based on an evaluation of the customer’s financial condition. Accounts receivable are due based on contract terms and at stated amounts due from customers, net of an allowance for doubtful accounts. Losses from credit sales are provided for in the financial statements. Accounts outstanding longer than the contractual payment terms are considered past due. The Company determines its allowance by considering a number of factors, including length of time customer’s account is past due, customer’s current ability to pay and the condition of the general economy and industry as a whole. The Company writes off accounts receivable when they are deemed uncollectible and such write-offs, net of payments received, are recorded as a reduction to the allowance. Purchases of Equity Securities by the Issuer and Affiliated Purchasers In November 2018, the Company’s Board of Directors authorized a program to repurchase up to $3,000,000 of its common stock. In July 2020, the Company used all of the original authorized $3,000,000. On December 14, 2020, Rubicon’s Board of Directors authorized an additional $3,000,000 for the repurchase of the Company’s common stock. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. The timing, price and volume of repurchases will be based on market conditions, relevant securities laws and other factors. The stock repurchases may be made from time to time, through solicited or unsolicited transactions in the open market, in privately negotiated transactions or pursuant to a Rule 10b5-1 plan. The program may be terminated, suspended or modified at any time. There can be no assurance as to the number of shares of common stock repurchased. The Company records treasury stock purchases under the cost method whereby the entire cost of the acquired stock is recorded as treasury stock. No shares of the Company’s common stock were repurchased during the three months ended March 31, 2021. The dollar value of shares that may yet to be purchased under the program is $3,000,000. Inventories Inventories are valued at the lower of cost or net realizable value. Net realizable value is determined based on an estimated selling price in the ordinary course of business less reasonably predictable costs of completion and disposal. Raw materials cost is determined using the first-in, first-out method, and work-in-process and finished goods costs are determined on a standard cost basis, which includes materials, labor and manufacturing overhead. The Company reduces the carrying value of its inventories for differences between the cost and the estimated net realizable value, taking into account usage, expected demand, technological obsolescence and other information. The Company establishes inventory reserves when conditions exist that suggest inventory may be in excess of anticipated demand or is obsolete based on customer specifications. The Company evaluates the ability to realize the value of its inventory based on a combination of factors, including forecasted sales, estimated current and future market value and changes in customers’ product specifications. The Company’s method of estimating excess and obsolete inventory has remained consistent for all periods presented. Inventories consisted of the following: March 31, December 31, (in thousands) Raw materials $ 468 $ 468 Work-in-process 452 614 Finished goods 594 459 $ 1,514 $ 1,541 As of December 31, 2020 and March 31, 2021, the Company made the determination that raw material inventories were such that the likelihood of significant usage within the current year was doubtful and reclassified such raw material inventories as non-current in the reported financial statements. Property and equipment Property and equipment consisted of the following: March 31, December 31, (in thousands) Machinery, equipment and tooling $ 3,343 $ 3,343 Buildings 1,711 1,711 Information systems 835 835 Land and land improvements 594 594 Furniture and fixtures 8 8 Total cost 6,491 6,491 Accumulated depreciation and amortization (4,050 ) (4,009 ) Property and equipment, net $ 2,441 $ 2,482 Assets held for sale and long-lived assets When circumstances, such as adverse market conditions, indicate that the carrying value of a long-lived asset may be impaired, the Company performs an analysis to review the recoverability of the asset’s carrying value. The Company makes estimates of the undiscounted cash flows (excluding interest charges) from the expected future operations of the asset. These estimates consider factors such as expected future operating income, operating trends and prospects, as well as the effects of demand, competition and other factors. If the analysis indicates that the carrying value is not recoverable from future cash flows, an impairment loss is recognized to the extent that the carrying value exceeds the estimated fair value. The estimated fair value of assets is determined using appraisal techniques, which assume the highest and best use of the asset by market participants, considering the use of the asset that is physically possible, legally permissible and financially feasible at the measurement date. Any impairment losses are recorded as operating expenses which reduce net income. For the year ended December 31, 2020, the Company reviewed the current fair value of its assets and concluded no adjustments were needed. Additionally, no adjustments were recorded for the three months ended March 31, 2021. The Company will continue to assess its long-lived assets to ensure the carrying amount of these assets is still appropriate given any changes in the asset usage, marketplace and other factors used in determining the current fair value. The Company did not record any sales of its equipment or consumable assets for the three months ended March 31, 2021. The Company is pursuing the sale of our parcel of land located in Batavia, Illinois. Although the Company cannot assure the timing of this sale, the property was classified as current asset held for sale at March 31, 2021 and December 31, 2020, as it is our intention to complete this sale within the next twelve-month period. We cannot guarantee that we will be able to successfully complete the sale or lease of this asset. Revenue recognition The Company recognizes revenue in accordance with ASC Topic 606, Revenue From Contracts with Customers We do not provide maintenance or other services and do not have sales that involve bill & hold arrangements, multiple elements or deliverables. However, we do provide product warranty for up to 90 days, for which we have accrued a warranty reserve of $2,000 and $2,000 at March 31, 2021 and December 31, 2020, respectively. Net income (loss) per common share Basic net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of diluted common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted-average shares (a) any outstanding stock options based on the treasury stock method and (b) restricted stock units (“RSU”). Diluted net income per common share was the same as basic net income per common share for the three months ended March 31, 2021 and 2020, because the effects of potentially dilutive securities did not have a material impact on the calculation of diluted net income per share. The Company had outstanding options exercisable into 18,250 and 19,500 shares of the Company’s common stock that would have had an anti-dilutive effect at March 31, 2021 and 2020, respectively. New accounting pronouncements adopted The Company has evaluated other recently issued accounting pronouncements and does not believe that any of these pronouncements will have a significant impact the Company’s consolidated financial statements and related disclosures.

Investments

Investments	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
INVESTMENTS	3. INVESTMENTS The Company invests its available cash primarily in U.S. Treasury securities, investment grade commercial paper, FDIC guaranteed certificates of deposit, common stock, preferred stock, equity-related securities and corporate notes. Investments classified as available-for-sale debt securities are carried at fair value with unrealized gains and losses recorded in accumulated other comprehensive income/(loss). Investments in common stock, preferred stock and equity-related securities are reported at fair value, with both realized and unrealized gains and losses recorded in other income (expense), in the consolidated statements of operations. The following table presents the amortized cost and gross unrealized losses on all securities at March 31, 2021: Amortized Gross Gross Fair (in thousands) Short-term investments: U.S. Treasury securities $ 14,749 $ — $ — $ 14,749 Marketable securities — — — $ — Total short-term investments $ 14,749 $ — $ — $ 14,749 The following table presents the amortized cost and gross unrealized losses on all securities at December 31, 2020: Amortized Gross Gross Fair (in thousands) Short-term investments: U.S. Treasury securities $ 14,748 $ — $ — $ 14,748 Marketable securities — — — — Total short-term investments $ 14,748 $ — $ — $ 14,748 The Company values its investments at fair value, defined as the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value, which are the following: ● Level 1—Quoted prices in active markets for identical assets or liabilities. ● Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. ● Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The Company invests in fixed-income, common stock, preferred stock and equity-related securities. Its fixed-income available-for-sale debt securities consist of U.S. Treasury securities, high-quality investment grade commercial paper, FDIC guaranteed certificates of deposit, and corporate notes. The Company values these securities based on pricing from pricing vendors, who may use quoted prices in active markets for identical assets (Level 1 inputs) or inputs other than quoted prices that are observable either directly or indirectly (Level 2 inputs) in determining fair value. The valuation techniques used to measure the fair value of the Company’s financial instruments having Level 2 inputs were derived from non-binding market consensus prices that are corroborated by observable market data, quoted market prices for similar instruments, or pricing models, such as discounted cash flow techniques. The following table summarizes the Company’s financial assets measured at fair value on a recurring basis as of March 31, 2021: Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents: Money market funds $ 3,137 $ — $ — $ 3,137 Investments: Available-for-sale securities — current: U.S. Treasury securities — 14,749 — 14,749 Total $ 3,137 $ 14,749 $ — $ 17,886 The following table summarizes the Company’s financial assets measured at fair value on a recurring basis as of December 31, 2020: Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents: Money market funds $ 3,136 $ — $ — $ 3,136 Investments: Available-for-sale securities — current: U.S. Treasury securities — 14,748 — 14,748 Total $ 3,136 $ 14,748 $ — $ 17,884 There are no terms or conditions restricting the Company from redeeming any of its investments. In addition to the securities noted above, the Company had approximately $7,434,000 and $7,994,000 of time deposits included in cash and cash equivalents as of March 31, 2021 and December 31, 2020, respectively.

Significant Customers

Significant Customers	3 Months Ended
	Mar. 31, 2021
Significant Customers Disclosure [Abstract]
SIGNIFICANT CUSTOMERS	4. SIGNIFICANT CUSTOMERS For the three months ended March 31, 2021, the Company had three customers individually that accounted for approximately 19%, 15%, and 11% of revenue. For the three months ended March 31, 2020, the Company had four customers individually that accounted for approximately 18%, 18%, 16% and 13% of revenue. No other customer accounted for 10% or more of the Company’s revenues during the three months ended March 31, 2021 and 2020. Customers individually representing more than 10% of trade receivables accounted for approximately 62% and 44% of accounts receivable as of March 31, 2021 and December 31, 2020, respectively.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
STOCKHOLDERS' EQUITY	5. STOCKHOLDERS’ EQUITY Common shares reserved As of March 31, 2021, the Company had reserved 65,103 shares of common stock for issuance upon the exercise of outstanding common stock options and vesting of RSUs. Also, 279,505 shares of the Company’s common stock were reserved for future grants of stock options and RSUs (or other similar equity instruments) under the Rubicon Technology, Inc. 2016 Stock Incentive Plan (the “2016 Plan”) as of March 31, 2021.

Stock Incentive Plans

Stock Incentive Plans	3 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
STOCK INCENTIVE PLANS	6. STOCK INCENTIVE PLANS In August 2007, the Company adopted the Rubicon Technology Inc. 2007 Stock Incentive Plan, which was amended and restated effective in March 2011 (the “2007 Plan”), and which allowed for the grant of incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock, RSUs, performance awards and bonus shares. The maximum number of shares that could be awarded under the 2007 Plan was 440,769 shares. Options granted under the 2007 Plan entitled the holder to purchase shares of the Company’s common stock at the specified option exercise price, which could not be less than the fair value of the common stock on the grant date. On June 24, 2016, the plan terminated with the adoption of the Rubicon Technology, Inc. 2016 Stock Incentive Plan, (the “2016 Plan”). Any existing awards under the 2007 Plan remain outstanding in accordance with their current terms under the 2007 Plan. In June 2016, the Company’s stockholders approved adoption of the 2016 Plan effective as of March 17, 2016, which allows for the grant of incentive stock options, non-statutory stock options, stock appreciation rights, restricted stock, RSUs, performance awards and bonus shares. The Compensation Committee of the Board administers the 2016 Plan. The committee determines the type of award to be granted, the fair value, the number of shares covered by the award, and the time when the award vests and may be exercised. Pursuant to the 2016 Plan, as of March 31, 2021 there are 279,505 shares of the Company’s common stock plus any shares subject to outstanding awards under the 2007 Plan that subsequently expire unexercised, are forfeited without the delivery of shares or are settled in cash, will be available for issuance under the 2016 Plan. The 2016 Plan will automatically terminate on March 17, 2026, unless the Company terminates it sooner. The following table summarizes the activity of the stock incentive and equity plans as of March 31, 2021, and changes during the three months then ended: Shares Number of Weighted- Number of Number of At January 1, 2021 296,105 20,100 $ 9.71 99,570 45,003 Granted (31,550 ) — — — — Exercised/issued — — — — — Cancelled/forfeited 14,950 — — — — At March 31, 2021 279,505 20,100 $ 9.71 99,570 45,003 The Company’s aggregate intrinsic value is calculated as the difference between the exercise price of the underlying stock options and the fair value of the Company’s common stock. Based on the fair value of the common stock at March 31, 2021, there was $74,775 of intrinsic value arising from 18,250 stock options exercisable or outstanding. The Company uses the Black-Scholes option pricing model to value stock options. The Company uses historical stock price average to determine its volatility assumptions. The assumed risk-free rates were based on U.S. Treasury rates in effect at the time of grant with a term consistent with the expected option lives. The expected term is based upon the vesting term of the Company’s options. The forfeiture rate of 36.13% is based on the history of forfeited options. The expense is allocated using the straight-line method. For the three months ended March 31, 2021 and 2020, the Company recorded $0 and $3,000, respectively, of stock option compensation expense. As of March 31, 2021, there was no unrecognized compensation cost related to non-vested stock option awards granted under the Company’s stock-based plans. As of December 31, 2020 and March 31, 2021, the Company did not have any non-vested options. The Company did not record any RSU expense for the three months ended March 31, 2021 and 2020. A summary of the Company’s RSUs during the three months ended March 31, 2021, is presented below: RSUs Weighted Aggregate Non-vested RSUs as of January 1, 2021 45,003 $ 6.20 Granted — — Vested — — Cancelled — — Non-vested RSUs at March 31, 2021 45,003 $ 6.20 $ 278,961 Every year at the Company’s annual meeting each member of the Board of Directors is issued an RSU which vests on the day of the following year’s annual meeting. When such RSU vests, they are automatically converted into $10,000 of the Company’s common stock based upon the closing price the day before the following year’s annual meeting. During the three months ended March 31, 2021, the Company awarded 31,550 shares to an officer of the Company with a fair value of approximately $341,000. The Company’s board of directors are compensated partially in cash and partially in restricted stock. For the three months ended March 31, 2021 and 2020, no restricted stock shares were issued to our directors. As of March 31, 2021 and December 31, 2020, there were no outstanding non-vested restricted stock shares.

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	7. COMMITMENTS AND CONTINGENCIES Litigation From time to time, the Company experiences routine litigation in the normal course of its business. The management of the Company does not believe any pending litigation, will have a material adverse effect on the financial condition, results of operations or cash flows of the Company. COVID-19 Pandemic In March 2020, the World Health Organization declared the outbreak of a novel coronavirus (COVID-19) as a pandemic. The full impact of the COVID-19 outbreak is unknown and cannot be reasonably estimated. The magnitude and duration of the COVID-19 outbreak, as well as other factors, could result in a material impact to the Company’s financial statements in future reporting periods.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
INCOME TAXES	8. INCOME TAXES In 2017, the U.S. enacted the Tax Cuts and Jobs Act (the “Act”) which, among other provisions, reduced the U.S. corporate tax rate from 35% to 21% effective January 1, 2018. The SEC issued guidance, Staff Accounting Bulletin 118, on accounting for the tax effects of the Act. The guidance allows the Company to record provisional amounts for those impacts, with the requirement that the accounting be completed in a period not to exceed one year from the date of enactment. The Company has completed its accounting for the tax effects of enactment of the Act. The deemed inclusion from the repatriation tax increased from $3,900,000 at the time of provision to $5,000,000 at the time the calculation was finalized for the tax return. The increase of the inclusion related primarily to the refinement of Malaysia earnings and profits. As the Company is in a full valuation allowance position, an equal benefit adjustment was recorded for the impact of the increase of the deemed repatriation tax. The Company is subject to taxation in the U.S. and in a U.S. state jurisdiction. On a quarterly basis, the Company assesses the recoverability of deferred tax assets and the need for a valuation allowance. Such evaluations involve the application of significant judgment, and multiple factors, both positive and negative, are considered. For the period ended March 31, 2021, a valuation allowance has been included in the 2021 forecasted effective tax rate. The Company is in a cumulative loss position for the past three years, which is considered significant negative evidence that is difficult to overcome on a “more likely than not” standard through objectively verifiable data. Under the accounting standards, objective verifiable evidence is given greater weight than subjective evidence such as the Company’s projections for future growth. Based on an evaluation in accordance with the accounting standards, as of December 31, 2015, a valuation allowance has been recorded against the net U.S. deferred tax assets in order to measure only the portion of the deferred tax assets that are more likely than not to be realized based on the weight of all available evidence. At March 31, 2021, the Company continues to be in a three-year cumulative loss position, therefore, until an appropriate level of profitability is attained, the Company expects to maintain a full valuation allowance on its U.S. net deferred tax assets. Any U.S. tax benefits or tax expense recorded on the Company’s consolidated statement of operations will be offset with a corresponding adjustment from the use of the net operating loss (“NOL”) carryforward asset which currently has a full valuation allowance. In the event that the Company changes its determination as to the amount of deferred tax assets that can be realized, the Company will adjust its valuation allowance with a corresponding impact to the provision for income taxes in the period in which such determination is made.

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
SEGMENT INFORMATION	9. SEGMENT INFORMATION The Company has determined that it operates in two segments, the sapphire and pharmacy business. Revenue is attributed by geographic region based on ship-to location of the Company’s customers. The following table summarizes revenue by geographic region: Three months ended 2021 2020 (in thousands) North America $ 588 $ 1,040 Asia 139 113 Other 2 7 Total revenue $ 729 $ 1,160 The following table summarizes sales by product type: Three months ended 2021 2020 (in thousands) Optical $ 495 $ 1,027 Rubicon DTP 234 133 Total revenue $ 729 $ 1,160 As of March 31, 2021 and December 31, 2020, the Company held all of its assets in the United States. Direct Dose Rx accounted for a loss of approximately $95,000 and $119,000 for the three months ended March 31, 2021 and 2020, respectively. Direct Dose Rx assets are currently not material to the consolidated financial information of the Company and therefore there is limited disclosure relating specifically to them.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	10. SUBSEQUENT EVENTS

Accounting Policies, by Policy

Accounting Policies, by Policy (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Principles of consolidation	Principles of consolidation The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries, Rubicon Technology Worldwide LLC, Rubicon Technology BP LLC, Rubicon Sapphire Technology (Malaysia) SDN BHD and Rubicon DTP LLC. All intercompany transactions and balances have been eliminated in consolidation.
Investments	Investments The Company invests available cash primarily in U.S. Treasury securities, investment grade commercial paper, FDIC guaranteed certificates of deposit, common stock, preferred stock, equity-related securities and corporate notes. Investments classified as available-for-sale debt securities are carried at fair value with unrealized gains and losses recorded in accumulated other comprehensive income (loss). Investments in common stock, preferred stock and equity-related securities are reported at fair value, with both realized and unrealized gains and losses recorded in other income (expense), in the consolidated statement of operations. Investments in which the Company has the ability and intent, if necessary, to liquidate are classified as short-term. The Company reviews its available-for-sale debt securities investments at the end of each quarter for other-than-temporary declines in fair value based on the specific identification method. The Company considers various factors in determining whether an impairment is other-than-temporary, including the severity and duration of the impairment, changes in underlying credit ratings, forecasted recovery, its ability and intent to hold the investment for a period of time sufficient to allow for any anticipated recovery in market value and the probability that the scheduled cash payments will continue to be made. When the Company concludes that an other-than-temporary impairment has resulted, the difference between the fair value and carrying value is written off and recorded as a charge on the consolidated statement of operations.
Accounts receivable	Accounts receivable The majority of the Company’s accounts receivable is due from defense subcontractors, industrial manufacturers, fabricators and resellers. Credit is extended based on an evaluation of the customer’s financial condition. Accounts receivable are due based on contract terms and at stated amounts due from customers, net of an allowance for doubtful accounts. Losses from credit sales are provided for in the financial statements. Accounts outstanding longer than the contractual payment terms are considered past due. The Company determines its allowance by considering a number of factors, including length of time customer’s account is past due, customer’s current ability to pay and the condition of the general economy and industry as a whole. The Company writes off accounts receivable when they are deemed uncollectible and such write-offs, net of payments received, are recorded as a reduction to the allowance.
Purchases of Equity Securities by the Issuer and Affiliated Purchasers	Purchases of Equity Securities by the Issuer and Affiliated Purchasers In November 2018, the Company’s Board of Directors authorized a program to repurchase up to $3,000,000 of its common stock. In July 2020, the Company used all of the original authorized $3,000,000. On December 14, 2020, Rubicon’s Board of Directors authorized an additional $3,000,000 for the repurchase of the Company’s common stock. The Company’s share repurchase program does not obligate it to acquire any specific number of shares. The timing, price and volume of repurchases will be based on market conditions, relevant securities laws and other factors. The stock repurchases may be made from time to time, through solicited or unsolicited transactions in the open market, in privately negotiated transactions or pursuant to a Rule 10b5-1 plan. The program may be terminated, suspended or modified at any time. There can be no assurance as to the number of shares of common stock repurchased. The Company records treasury stock purchases under the cost method whereby the entire cost of the acquired stock is recorded as treasury stock. No shares of the Company’s common stock were repurchased during the three months ended March 31, 2021. The dollar value of shares that may yet to be purchased under the program is $3,000,000.
Inventories	Inventories Inventories are valued at the lower of cost or net realizable value. Net realizable value is determined based on an estimated selling price in the ordinary course of business less reasonably predictable costs of completion and disposal. Raw materials cost is determined using the first-in, first-out method, and work-in-process and finished goods costs are determined on a standard cost basis, which includes materials, labor and manufacturing overhead. The Company reduces the carrying value of its inventories for differences between the cost and the estimated net realizable value, taking into account usage, expected demand, technological obsolescence and other information. The Company establishes inventory reserves when conditions exist that suggest inventory may be in excess of anticipated demand or is obsolete based on customer specifications. The Company evaluates the ability to realize the value of its inventory based on a combination of factors, including forecasted sales, estimated current and future market value and changes in customers’ product specifications. The Company’s method of estimating excess and obsolete inventory has remained consistent for all periods presented. Inventories consisted of the following: March 31, December 31, (in thousands) Raw materials $ 468 $ 468 Work-in-process 452 614 Finished goods 594 459 $ 1,514 $ 1,541 As of December 31, 2020 and March 31, 2021, the Company made the determination that raw material inventories were such that the likelihood of significant usage within the current year was doubtful and reclassified such raw material inventories as non-current in the reported financial statements.
Property and equipment	Property and equipment Property and equipment consisted of the following: March 31, December 31, (in thousands) Machinery, equipment and tooling $ 3,343 $ 3,343 Buildings 1,711 1,711 Information systems 835 835 Land and land improvements 594 594 Furniture and fixtures 8 8 Total cost 6,491 6,491 Accumulated depreciation and amortization (4,050 ) (4,009 ) Property and equipment, net $ 2,441 $ 2,482
Assets held for sale and long-lived assets	Assets held for sale and long-lived assets When circumstances, such as adverse market conditions, indicate that the carrying value of a long-lived asset may be impaired, the Company performs an analysis to review the recoverability of the asset’s carrying value. The Company makes estimates of the undiscounted cash flows (excluding interest charges) from the expected future operations of the asset. These estimates consider factors such as expected future operating income, operating trends and prospects, as well as the effects of demand, competition and other factors. If the analysis indicates that the carrying value is not recoverable from future cash flows, an impairment loss is recognized to the extent that the carrying value exceeds the estimated fair value. The estimated fair value of assets is determined using appraisal techniques, which assume the highest and best use of the asset by market participants, considering the use of the asset that is physically possible, legally permissible and financially feasible at the measurement date. Any impairment losses are recorded as operating expenses which reduce net income. For the year ended December 31, 2020, the Company reviewed the current fair value of its assets and concluded no adjustments were needed. Additionally, no adjustments were recorded for the three months ended March 31, 2021. The Company will continue to assess its long-lived assets to ensure the carrying amount of these assets is still appropriate given any changes in the asset usage, marketplace and other factors used in determining the current fair value. The Company did not record any sales of its equipment or consumable assets for the three months ended March 31, 2021. The Company is pursuing the sale of our parcel of land located in Batavia, Illinois. Although the Company cannot assure the timing of this sale, the property was classified as current asset held for sale at March 31, 2021 and December 31, 2020, as it is our intention to complete this sale within the next twelve-month period. We cannot guarantee that we will be able to successfully complete the sale or lease of this asset.
Revenue recognition	Revenue recognition The Company recognizes revenue in accordance with ASC Topic 606, Revenue From Contracts with Customers We do not provide maintenance or other services and do not have sales that involve bill & hold arrangements, multiple elements or deliverables. However, we do provide product warranty for up to 90 days, for which we have accrued a warranty reserve of $2,000 and $2,000 at March 31, 2021 and December 31, 2020, respectively.
Net income (loss) per common share	Net income (loss) per common share Basic net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of diluted common shares outstanding during the period. Diluted shares outstanding are calculated by adding to the weighted-average shares (a) any outstanding stock options based on the treasury stock method and (b) restricted stock units (“RSU”). Diluted net income per common share was the same as basic net income per common share for the three months ended March 31, 2021 and 2020, because the effects of potentially dilutive securities did not have a material impact on the calculation of diluted net income per share. The Company had outstanding options exercisable into 18,250 and 19,500 shares of the Company’s common stock that would have had an anti-dilutive effect at March 31, 2021 and 2020, respectively.
New accounting pronouncements adopted	New accounting pronouncements adopted The Company has evaluated other recently issued accounting pronouncements and does not believe that any of these pronouncements will have a significant impact the Company’s consolidated financial statements and related disclosures.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of inventories	March 31, December 31, (in thousands) Raw materials $ 468 $ 468 Work-in-process 452 614 Finished goods 594 459 $ 1,514 $ 1,541
Schedule of property and equipment	March 31, December 31, (in thousands) Machinery, equipment and tooling $ 3,343 $ 3,343 Buildings 1,711 1,711 Information systems 835 835 Land and land improvements 594 594 Furniture and fixtures 8 8 Total cost 6,491 6,491 Accumulated depreciation and amortization (4,050 ) (4,009 ) Property and equipment, net $ 2,441 $ 2,482

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Summary of amortized cost and gross unrealized losses on all securities	Amortized Gross Gross Fair (in thousands) Short-term investments: U.S. Treasury securities $ 14,749 $ — $ — $ 14,749 Marketable securities — — — $ — Total short-term investments $ 14,749 $ — $ — $ 14,749 Amortized Gross Gross Fair (in thousands) Short-term investments: U.S. Treasury securities $ 14,748 $ — $ — $ 14,748 Marketable securities — — — — Total short-term investments $ 14,748 $ — $ — $ 14,748
Summary of financial assets measured at fair value on a recurring basis	Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents: Money market funds $ 3,137 $ — $ — $ 3,137 Investments: Available-for-sale securities — current: U.S. Treasury securities — 14,749 — 14,749 Total $ 3,137 $ 14,749 $ — $ 17,886 Level 1 Level 2 Level 3 Total (in thousands) Cash equivalents: Money market funds $ 3,136 $ — $ — $ 3,136 Investments: Available-for-sale securities — current: U.S. Treasury securities — 14,748 — 14,748 Total $ 3,136 $ 14,748 $ — $ 17,884

Stock Incentive Plans (Tables)

Stock Incentive Plans (Tables)	3 Months Ended
	Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Schedule of award vesting terms for the RSUs granted	Shares Number of Weighted- Number of Number of At January 1, 2021 296,105 20,100 $ 9.71 99,570 45,003 Granted (31,550 ) — — — — Exercised/issued — — — — — Cancelled/forfeited 14,950 — — — — At March 31, 2021 279,505 20,100 $ 9.71 99,570 45,003
Schedule of award vesting terms for the RSUs granted	RSUs Weighted Aggregate Non-vested RSUs as of January 1, 2021 45,003 $ 6.20 Granted — — Vested — — Cancelled — — Non-vested RSUs at March 31, 2021 45,003 $ 6.20 $ 278,961

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Schedule of geographic region	Three months ended 2021 2020 (in thousands) North America $ 588 $ 1,040 Asia 139 113 Other 2 7 Total revenue $ 729 $ 1,160
Schedule of sales by product type	Three months ended 2021 2020 (in thousands) Optical $ 495 $ 1,027 Rubicon DTP 234 133 Total revenue $ 729 $ 1,160

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details) - USD ($)	1 Months Ended	3 Months Ended
	Jul. 31, 2020	Mar. 31, 2021	Dec. 31, 2020	Dec. 14, 2020	Mar. 31, 2020	Nov. 30, 2018
Summary of Significant Accounting Policies (Details) [Line Items]
Repurchase of common stock		$ 3,000,000
Original authorized amount	$ 3,000,000
Warrant term		90 days
Warranty reserve		$ 2,000	$ 2,000
Outstanding options exercisable shares (in Shares)		18,250			19,500
Board of Directors [Member]
Summary of Significant Accounting Policies (Details) [Line Items]
Repurchase of common stock				$ 3,000,000		$ 3,000,000

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) - Schedule of inventories - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of inventories [Abstract]
Raw materials	$ 468	$ 468
Work-in-process	452	614
Finished goods	594	459
Inventories	$ 1,514	$ 1,541

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Details) - Schedule of property and equipment - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Total cost	$ 6,491	$ 6,491
Accumulated depreciation and amortization	(4,050)	(4,009)
Property and equipment, net	2,441	2,482
Machinery, equipment and tooling [Member]
Property, Plant and Equipment [Line Items]
Total cost	3,343	3,343
Buildings [Member]
Property, Plant and Equipment [Line Items]
Total cost	1,711	1,711
Information systems [Member]
Property, Plant and Equipment [Line Items]
Total cost	835	835
Land and land improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	594	594
Furniture and fixtures [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 8	$ 8

Investments (Details)

Investments (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Time deposits included in cash and cash equivalents	$ 7,434,000	$ 7,994,000

Investments (Details) - Summary

Investments (Details) - Summary of amortized cost and gross unrealized losses on all securities - Short-term Investments [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments (Details) - Summary of amortized cost and gross unrealized losses on all securities [Line Items]
Amortized cost	$ 14,749	$ 14,748
Gross unrealized gains
Gross unrealized losses
Fair value	14,749	14,748
U.S. Treasury securities [Member]
Investments (Details) - Summary of amortized cost and gross unrealized losses on all securities [Line Items]
Amortized cost	14,749	14,748
Gross unrealized gains
Gross unrealized losses
Fair value	14,749	14,748
Marketable securities [Member]
Investments (Details) - Summary of amortized cost and gross unrealized losses on all securities [Line Items]
Amortized cost
Gross unrealized gains
Gross unrealized losses
Fair value

Investments (Details) - Summa_2

Investments (Details) - Summary of financial assets measured at fair value on a recurring basis - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available-for-sale securities — current:
Total	$ 17,886	$ 17,884
U.S. Treasury securities [Member]
Available-for-sale securities — current:
Available-for-sale securities - current	14,749	14,748
Level 1 [Member]
Available-for-sale securities — current:
Total	3,137	3,136
Level 1 [Member] | U.S. Treasury securities [Member]
Available-for-sale securities — current:
Available-for-sale securities - current
Level 2 [Member]
Available-for-sale securities — current:
Total	14,749	14,748
Level 2 [Member] | U.S. Treasury securities [Member]
Available-for-sale securities — current:
Available-for-sale securities - current	14,749	14,748
Level 3 [Member]
Available-for-sale securities — current:
Total
Level 3 [Member] | U.S. Treasury securities [Member]
Available-for-sale securities — current:
Available-for-sale securities - current
Money market funds [Member]
Cash equivalents:
Cash equivalents	3,137	3,136
Money market funds [Member] | Level 1 [Member]
Cash equivalents:
Cash equivalents	3,137	3,136
Money market funds [Member] | Level 2 [Member]
Cash equivalents:
Cash equivalents
Money market funds [Member] | Level 3 [Member]
Cash equivalents:
Cash equivalents

Significant Customers (Details)

Significant Customers (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Significant Customers (Details) [Line Items]
Number of customers	3	4
Concentration risk, percentage	10.00%	10.00%
Accounts Receivable [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage	62.00%		44.00%
Customer One [Member] | Revenue Benchmark [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage	19.00%	18.00%
Customer Two [Member] | Revenue Benchmark [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage	15.00%	18.00%
Customer Three [Member] | Revenue Benchmark [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage	11.00%	16.00%
Customer Four [Member] | Revenue Benchmark [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage		13.00%
Trade Accounts Receivable [Member]
Significant Customers (Details) [Line Items]
Concentration risk, percentage	10.00%		10.00%

Stockholders' Equity (Details)

Stockholders' Equity (Details)	Mar. 31, 2021shares
Stockholders' Equity Note [Abstract]
Reserved common stock shares for issuance	65,103
Common stock reserved for future grants	279,505

Stock Incentive Plans (Details)

Stock Incentive Plans (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Aug. 31, 2007
Stock Incentive Plans (Details) [Line Items]
Fair value of common stock intrinsic value	$ 74,775
Stock options exercisable (in Shares)
Stock compensation forfeiture rate, percentage	36.13%
Stock compensation expense	$ 0	$ 3,000
Award shares (in Shares)	31,550
Fair value amount	$ 341,000
2007 Stock Incentive Plan [Member]
Stock Incentive Plans (Details) [Line Items]
Maximum number of shares awarded or sold (in Shares)			440,769
2016 Plan [Member]
Stock Incentive Plans (Details) [Line Items]
Common stock reserved for future issuance of awards (in Shares)	279,505
Plan termination date, description	The 2016 Plan will automatically terminate on March 17, 2026, unless the Company terminates it sooner.
Stock options [Member]
Stock Incentive Plans (Details) [Line Items]
Stock options exercisable (in Shares)	18,250
Restricted Stock Units (RSUs) [Member]
Stock Incentive Plans (Details) [Line Items]
Conversion of common stock	$ 10,000

Stock Incentive Plans (Detail_2

Stock Incentive Plans (Details) - Schedule of activity of stock incentive and equity plans	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Schedule of activity of stock incentive and equity plans [Abstract]
Shares available for grant, Balance	296,105
Number of options outstanding, Balance	20,100
Weighted-average option exercise price, Balance (in Dollars per share) | $ / shares	$ 9.71
Number of restricted stock shares issued, Balance	99,570
Number of RSUs outstanding, Balance	45,003
Shares available for grant, Balance	279,505
Number of options outstanding, Balance	20,100
Weighted-average option exercise price, Balance (in Dollars per share) | $ / shares	$ 9.71
Number of restricted stock shares issued, Balance	99,570
Number of RSUs outstanding, Balance	45,003
Shares available for grant, Granted	(31,550)
Number of options outstanding, Granted
Weighted-average option exercise price, Granted (in Dollars per share) | $ / shares
Number of restricted stock shares issued, Granted
Number of RSUs outstanding, Granted
Shares available for grant, Exercised/issued
Number of options outstanding, Exercised/issued
Weighted-average option exercise price, Exercised/issued (in Dollars per share) | $ / shares
Number of restricted stock shares issued, Exercised/issued
Number of RSUs outstanding, Exercised/issued
Shares available for grant, Canceled/forfeited	14,950
Number of options outstanding, Canceled/forfeited
Weighted-average option exercise price, Canceled/forfeited (in Dollars per share) | $ / shares
Number of restricted stock shares issued, Canceled/forfeited
Number of RSUs outstanding, Canceled/forfeited

Stock Incentive Plans (Detail_3

Stock Incentive Plans (Details) - Schedule of restricted stock units - Restricted Stock Units (RSUs) [Member] $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)$ / sharesshares
Stock Incentive Plans (Details) - Schedule of restricted stock units [Line Items]
Non-vested RSUs outstanding, Beginning balance | shares	45,003
Weighted-average price at time of grant, Beginning balance | $ / shares	$ 6.20
Non-vested RSUs outstanding, Granted | shares
Weighted-average price at time of grant, Granted | $ / shares
Non-vested RSUs outstanding, Vested | shares
Weighted-average price at time of grant, Vested | $ / shares
Non-vested RSUs outstanding, Cancelled | shares
Weighted-average price at time of grant, Cancelled | $ / shares
Non-vested RSUs outstanding, Ending balance | shares	45,003
Weighted-average price at time of grant, Ending balance | $ / shares	$ 6.20
Aggregate intrinsic value, Non-vested, Ending balance | $	$ 278,961

Income Taxes (Details)

Income Taxes (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2017USD ($)
Maximum [Member]
Income Taxes (Details) [Line Items]
U.S. corporate tax rate	35.00%
Repatriation tax	$ 5,000,000
Minimum [Member]
Income Taxes (Details) [Line Items]
U.S. corporate tax rate	21.00%
Repatriation tax	$ 3,900,000

Segment Information (Details)

Segment Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Direct Dose Rx [Member]
Segment Information (Details) [Line Items]
Loss	$ 95,000	$ 119,000

Segment Information (Details) -

Segment Information (Details) - Schedule of geographic region - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Total revenue	$ 729	$ 1,160
North America [Member]
Segment Reporting Information [Line Items]
Total revenue	588	1,040
Asia [Member]
Segment Reporting Information [Line Items]
Total revenue	139	113
Other [Member]
Segment Reporting Information [Line Items]
Total revenue	$ 2	$ 7

Segment Information (Details)_2

Segment Information (Details) - Schedule of sales by product type - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	$ 729	$ 1,160
Optical [Member]
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	495	1,027
Rubicon DTP [Member]
Segment Information (Details) - Schedule of sales by product type [Line Items]
Total revenue	$ 234	$ 133