One Stop Systems (OSS) 10-Q 12 Aug 21 2021 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Jul. 31, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2
Trading Symbol	OSS
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Security Exchange Name	NASDAQ
Entity Registrant Name	One Stop Systems, Inc.
Entity Central Index Key	0001394056
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity Common Stock, Shares Outstanding		18,628,871
Entity File Number	001-38371
Entity Tax Identification Number	33-0885351
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	2235 Enterprise Street #110
Entity Address, City or Town	Escondido
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92029
City Area Code	760
Local Phone Number	745-9883

UNAUDITED CONSOLIDATED BALANCE

UNAUDITED CONSOLIDATED BALANCE SHEETS - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 3,975,069	$ 6,316,921
Short-term investments (Note 3)	14,524,249
Accounts receivable, net	6,527,109	7,458,383
Inventories, net	12,411,490	9,647,504
Prepaid expenses and other current assets	996,801	655,708
Total current assets	38,434,718	24,078,516
Property and equipment, net	3,218,341	3,487,178
Deposits and other	48,155	81,709
Deferred tax assets, net	3,485,709	3,698,593
Goodwill	7,120,510	7,120,510
Intangible assets, net	334,456	662,257
Total Assets	52,641,889	39,128,763
Current liabilities
Accounts payable	4,149,482	976,420
Accrued expenses and other liabilities	3,036,793	3,481,444
Current portion of notes payable, net of debt discount of $0 and $2,047, respectively (Note 8)	1,777,715	1,365,204
Current portion of related party notes payable, net of debt discount of $0 and $6,726, respectively (Note 8)		199,943
Current portion of senior secured convertible note, net of debt discounts of $74,458 and $256,242, respectively (Note 8)	2,516,451	1,789,212
Total current liabilities	11,480,441	7,812,223
Senior secured convertible note, net of current portion and debt discounts of $0 and $14,107, respectively (Note 8)		531,347
Paycheck protection program note payable (Note 8)		1,499,360
Total liabilities	11,480,441	9,842,930
Commitments and contingencies (Note 10)
Stockholders’ equity
Common stock, $.0001 par value; 50,000,000 shares authorized; 18,538,689 and 16,684,424 shares issued and outstanding, respectively	1,854	1,668
Additional paid-in capital	41,037,948	30,758,354
Accumulated other comprehensive income	145,062	287,547
Accumulated deficit	(23,416)	(1,761,736)
Total stockholders’ equity	41,161,448	29,285,833
Total liabilities and stockholders' equity	$ 52,641,889	$ 39,128,763

UNAUDITED CONSOLIDATED BALANC_2

UNAUDITED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Debt discount on notes payable, current	$ 36,246
Debt discount on senior secured convertible note, current	74,458	$ 256,242
Debt discount on senior secured convertible note, noncurrent	$ 0	$ 14,107
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	18,538,689	16,684,424
Common stock, shares outstanding	18,538,689	16,684,424
Notes Payable
Debt discount on notes payable, current	$ 0	$ 2,047
Related Parties
Debt discount on notes payable, current	$ 0	$ 6,726

UNAUDITED CONSOLIDATED STATEMEN

UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Revenue	$ 14,905,009	$ 11,625,327	$ 28,220,761	$ 24,984,964
Cost of revenue	10,252,265	8,300,132	19,135,233	18,264,082
Gross profit	4,652,744	3,325,195	9,085,528	6,720,882
Operating expenses:
General and administrative	1,648,785	1,877,358	3,806,404	4,391,423
Marketing and selling	1,479,292	845,098	2,647,193	2,034,449
Research and development	1,008,017	1,008,625	1,840,250	2,212,050
Total operating expenses	4,136,094	3,731,081	8,293,847	8,637,922
Income (loss) from operations	516,650	(405,886)	791,681	(1,917,040)
Other income (expense), net:
Interest income	61,798	99,343	67,098	123,980
Interest expense	(169,031)	(150,186)	(319,013)	(218,970)
Other income (expense), net	1,522,998	3,056	1,494,369	(4,973)
Total other income (expense), net	1,415,765	(47,787)	1,242,454	(99,963)
Income (loss) before income taxes	1,932,415	(453,673)	2,034,135	(2,017,003)
Provision (benefit) for income taxes	235,293	(441,511)	295,815	(908,809)
Net income (loss)	$ 1,697,122	$ (12,162)	$ 1,738,320	$ (1,108,194)
Net income (loss) per share:
Basic	$ 0.09	$ 0	$ 0.10	$ (0.07)
Diluted	$ 0.09	$ 0	$ 0.09	$ (0.07)
Weighted average common shares outstanding:
Basic	18,513,620	16,488,325	17,934,022	16,410,660
Diluted	19,735,383	16,488,325	19,305,842	16,410,660

UNAUDITED CONSOLIDATED STATEM_2

UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 1,697,122	$ (12,162)	$ 1,738,320	$ (1,108,194)
Other comprehensive income (loss):
Net unrealized gains (losses) on short-term investments	601		601
Currency translation adjustment	107,302	67,442	(143,086)	11,875
Total other comprehensive income (loss)	107,903	67,442	(142,485)	11,875
Comprehensive income (loss)	$ 1,805,025	$ 55,280	$ 1,595,835	$ (1,096,319)

UNAUDITED CONSOLIDATED STATEM_3

UNAUDITED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($)	Total	Common Stock	Additional Paid-in Capital	Noncontrolling Interest	Accumulated Other Comprehensive Income (Loss)	Accumulated (Deficit)
Balance at Dec. 31, 2019	$ 28,766,162	$ 1,612	$ 30,537,015	$ 500	$ (17,773)	$ (1,755,192)
Balance, Shares at Dec. 31, 2019		16,121,747
Stock-based compensation	207,761		207,761
Exercise of stock options	57,000	$ 35	56,965
Exercise of stock options, Shares		354,914
Return of capital upon dissolution of SkyScale	(500)			(500)
Taxes paid on net issuance of employee stock options	(656,845)		(656,845)
Currency translation adjustment	(55,567)				(55,567)
Net Income (loss)	(1,096,032)					(1,096,032)
Balance at Mar. 31, 2020	27,221,979	$ 1,647	30,144,896		(73,340)	(2,851,224)
Balance, Shares at Mar. 31, 2020		16,476,661
Balance at Dec. 31, 2019	28,766,162	$ 1,612	30,537,015	$ 500	(17,773)	(1,755,192)
Balance, Shares at Dec. 31, 2019		16,121,747
Net Income (loss)	(1,108,194)
Balance at Jun. 30, 2020	27,356,350	$ 1,649	30,223,985		(5,898)	(2,863,386)
Balance, Shares at Jun. 30, 2020		16,498,617
Balance at Mar. 31, 2020	27,221,979	$ 1,647	30,144,896		(73,340)	(2,851,224)
Balance, Shares at Mar. 31, 2020		16,476,661
Stock-based compensation	85,378		85,378
Exercise of stock options, RSU's and warrants	7,467	$ 2	7,465
Exercise of stock options, RSU's and warrants, Shares		21,956
Taxes paid on net issuance of employee stock options	(13,754)		(13,754)
Currency translation adjustment	67,442				67,442
Net Income (loss)	(12,162)					(12,162)
Balance at Jun. 30, 2020	27,356,350	$ 1,649	30,223,985		(5,898)	(2,863,386)
Balance, Shares at Jun. 30, 2020		16,498,617
Balance at Dec. 31, 2020	29,285,833	$ 1,668	30,758,354		287,547	(1,761,736)
Balance, Shares at Dec. 31, 2020		16,684,424
Stock-based compensation	438,394		438,394
Exercise of stock options, RSU's and warrants	278,968	$ 32	278,936
Exercise of stock options, RSU's and warrants, Shares		321,472
Proceeds from issuance of stock, net of issuance costs	9,221,190	$ 150	9,221,040
Proceeds from issuance of stock, net of issuance costs, Shares		1,497,006
Taxes paid on net issuance of employee stock options	(44,252)		(44,252)
Currency translation adjustment	(250,388)				(250,388)
Net Income (loss)	41,198					41,198
Balance at Mar. 31, 2021	38,970,943	$ 1,850	40,652,472		37,159	(1,720,538)
Balance, Shares at Mar. 31, 2021		18,502,902
Balance at Dec. 31, 2020	29,285,833	$ 1,668	30,758,354		287,547	(1,761,736)
Balance, Shares at Dec. 31, 2020		16,684,424
Net unrealized gains (losses) on short-term investments	601
Net Income (loss)	1,738,320
Balance at Jun. 30, 2021	41,161,448	$ 1,854	41,037,948		145,062	(23,416)
Balance, Shares at Jun. 30, 2021		18,538,689
Balance at Mar. 31, 2021	38,970,943	$ 1,850	40,652,472		37,159	(1,720,538)
Balance, Shares at Mar. 31, 2021		18,502,902
Stock-based compensation	465,336		465,336
Exercise of stock options, RSU's and warrants	22,552	$ 4	22,548
Exercise of stock options, RSU's and warrants, Shares		35,787
Additional stock issuance costs related to registered direct offering	(32,517)		(32,517)
Taxes paid on net issuance of employee stock options	(69,891)		(69,891)
Currency translation adjustment	107,302				107,302
Net unrealized gains (losses) on short-term investments	601				601
Net Income (loss)	1,697,122					1,697,122
Balance at Jun. 30, 2021	$ 41,161,448	$ 1,854	$ 41,037,948		$ 145,062	$ (23,416)
Balance, Shares at Jun. 30, 2021		18,538,689

UNAUDITED CONSOLIDATED STATEM_4

UNAUDITED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical)	3 Months Ended
	Mar. 31, 2021USD ($)
Statement Of Stockholders Equity [Abstract]
Proceed from issuance of stock, issuance costs	$ 778,810

UNAUDITED CONSOLIDATED STATEM_5

UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Cash flows from operating activities:
Net income (loss)			$ 1,738,320	$ (1,108,194)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Deferred benefit for income taxes			94,155	(953,939)
Gain on disposal of property and equipment				(1,542)
Recovery for bad debt			(4,902)	(1,411)
Warranty reserves			53,944
Amortization of deferred gain				(53,838)
Amortization of intangibles	$ 163,901	$ 174,525	327,801	349,051
Depreciation			447,771	449,159
Inventory reserves			343,136	210,176
Amortization of debt discount			109,305	115,990
Stock-based compensation expense	465,336	85,378	903,730	293,139
Gain on forgiveness of PPP loan and interest			(1,514,354)
Changes in operating assets and liabilities:
Accounts receivable			902,572	1,216,931
Inventories			(3,271,942)	(1,769,655)
Prepaid expenses and other current assets			(219,308)	(183,698)
Accounts payable			3,219,960	(1,107,724)
Accrued expenses and other liabilities			(341,825)	(389,504)
Net cash provided by (used in) operating activities			2,788,363	(2,935,059)	$ (250,173)
Cash flows from investing activities:
Investment in short-term investment grade securities			(14,523,647)
Purchases of property and equipment, including capitalization of labor costs for test equipment and ERP			(199,799)	(415,582)
Proceeds from sales of property and equipment				1,542
Net cash used in investing activities			(14,723,446)	(414,040)
Cash flows from financing activities:
Proceeds from exercise of stock options and warrants			301,520	64,467
Payment of payroll taxes on net issuance of employee stock options			(114,143)	(670,599)
Proceeds from issuance of stock			10,000,000
Stock issuance costs			(811,327)
Net borrowings on bank lines of credit				49,271
Proceeds from notes payable			1,807,818
Repayments on notes payable			(1,285,293)
Repayments on related-party notes payable			(206,669)	(285,320)
Repayments on notes payable			(63,188)	(86,824)
Proceeds, net of repayments, on secured convertible debt				2,247,363
Proceeds on Paycheck Protection Program (PPP) note payable				1,499,360
Net cash provided by financing activities			9,628,718	2,817,718
Net change in cash and cash equivalents			(2,306,365)	(531,381)
Effect of exchange rates on cash			(35,487)	662
Cash and cash equivalents, beginning of period			6,316,921	5,185,321	5,185,321
Cash and cash equivalents, end of period	$ 3,975,069	$ 4,654,602	3,975,069	4,654,602	$ 6,316,921
Supplemental disclosure of cash flow information:
Cash paid during the period for interest			83,392	108,313
Cash paid during the period for income taxes			80,629	146,132
Supplemental disclosure of non-cash flow transactions:
Forgiveness of PPP loan and interest			1,514,354
Original issue discount on senior secured convertible note				300,000
Reclassification of inventories to property and equipment			$ 24,076	$ 20,027

The Company and Basis of Presen

The Company and Basis of Presentation	6 Months Ended
	Jun. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
The Company and Basis of Presentation	NOTE 1 – THE COMPANY AND BASIS OF PRESENTATION Nature of Operations One Stop Systems, Inc. (“we,” “our,” “OSS,” or the “Company”) was originally incorporated as a California corporation in 1999 after initially being formed as a California limited liability company in 1998. On December 14, 2017, the Company was reincorporated as a Delaware corporation in connection with its initial public offering. The Company designs, manufactures, and markets industrial grade computer systems and components that are based on industry standard computer architectures. The Company markets its products to manufacturers of automated equipment used for media and entertainment, medical, industrial, and military applications. During the year ended December 31, 2015, the Company formed a wholly owned subsidiary in Germany, One Stop Systems, GmbH (“OSS GmbH”). During July 2016, the Company acquired Mission Technologies Group, Inc. (“Magma”) and its operations. In April 2017, the Company and a related entity formed a joint venture named SkyScale, LLC in the State of California (“SkyScale”). In accordance with the Contribution Agreement, each member contributed $750,000 and received a 50% interest in the joint venture. The purpose of SkyScale was to engage in the business of providing high performance computing capabilities as cloud services. As a result of changes in the competitive landscape and downward pressure on pricing from large competitors, the members of the SkyScale joint venture agreement agreed to dissolve SkyScale and ceased operations as of December 31, 2018. On August 31, 2018, the Company acquired Concept Development Inc. (“CDI”) located in Irvine, California. CDI specializes in the design and manufacture of custom high-performance computing systems for airborne in-flight entertainment and networking systems. CDI has been fully integrated into the core operations of OSS as of June 1, 2020. On October 31, 2018, OSS GmbH acquired 100% of the outstanding stock of Bressner Technology GmbH, a Germany limited liability company located near Munich, Germany (“Bressner”). Bressner provides standard and customized servers, panel PCs, and PCIe expansion systems. Bressner also provides manufacturing, test, and sales and marketing services for customers throughout Europe. Liquidity, Going Concern Considerations and Management Plans The Company’s primary sources of liquidity have been provided by (i) the Company’s February 2018 initial public offering (net proceeds were approximately $16,100,000); (ii) March 2019 notes payable from members of the Board of Directors and others of $1,500,000; (iii) the July 2019 sale of 1,554,546 shares of the Company’s common stock for net cash proceeds of $2,488,148; (iv) the April 24, 2020 sale of $3,000,000 of Senior Secured Convertible Promissory Notes issued at a 10% original issue discount; (v) receipt of approximately $1,500,000 on April 28, 2020 of government funding under the Paycheck Protection Program, and (vi) a receipt of $9,188,673 on March 3, 2021 in a registered direct offering. As of June 30, 2021, the Company’s cash and cash equivalents were $3,975,069 and working capital was $26,954,277. Cash and cash equivalents held by Bressner totaled $1,345,037 on June 30, 2021. Bressner’s debt covenants do not permit the use of these funds by its parent company. During the six month period ended June 30, 2021, the Company experienced an operating income of $791,681, with cash generated by operating activities of $2,788,363. During the year ended December 31, 2020, the Company experienced an operating loss of $424,281, with cash used in operating activities of $250,173. The Company’s revenue growth during the prior year slowed due to the effects of COVID-19. However, resulting from a reduction in force and strict cost containment, the Company was able to mitigate the effects, to some degree, of the reduced revenue attributable to the economic impact of COVID-19. Although there are signs that COVID-19 may begin to taper off, COVID-19 still has an impact on worldwide economic activity, and the ongoing effects of the COVID-19 pandemic has adversely impacted, and may continue to adversely impact, many aspects of our business In response to the COVID-19 pandemic, many state, local, and foreign governments have put in place restrictions in order to control the spread of the disease. Such restrictions, or the perception that further restrictions could occur, have resulted in business closures, work stoppages, slowdowns and delays, work-from-home policies, travel restrictions, and cancellation or postponement of events, among other effects that impacted productivity and disrupted our operations and those of our partners, suppliers, contractors, and customers. One way that COVID-19 has directly affected our operations is that we have experienced increased pricing and/or shortages of certain parts and supplies that are necessary components to the products and services we offer to our customers, and as a result, are experiencing longer lead-times. COVID-19 has indirectly affected our operations as well. For instance, some of our customers experienced downturns or uncertainty in their own business operations and revenue, and as a result, these customers have (and may continue to) decreased or delayed their technology spending, requested pricing concessions or payment extensions, or seek to renegotiate their contracts. For example, one of our customers that uses our products and services in their business operations operates in the live event space, such as music festivals and concerts. Due to measures implemented by local and state governments to restrict public gatherings in order to stop and/or prevent the spread of COVID-19, our client was unable to generate revenue at previous levels during these times, and as a result, we provided extended payment terms for the collection of our accounts receivables for this particular customer during the pandemic. However, all outstanding accounts receivables owed by this particular customer have now been received by the Company. During the pandemic, as state, local, and foreign governments implemented (and may continue to implement) preventative measures to contain or mitigate the outbreak of COVID-19, the usage of our products and services fluctuated following such implementation, and we cannot predict how usage levels will continue to be impacted by these preventative measures. There is no assurance that customers will continue to use our products and services, or to the same extent, as the COVID-19 pandemic begins to taper off or when it has ended. As a result, it has been difficult to accurately forecast our revenues or financial results, especially given that the near and long term impact of the pandemic remains uncertain. In addition, while the potential impact and duration of the COVID-19 pandemic on the economy and our business in particular may be difficult to assess or predict, the pandemic has resulted in, and may continue to result in, significant disruption of global financial markets, and may reduce our ability to access additional capital, which could negatively affect our liquidity in the future. Our results of operations could be materially below our forecasts as well, which could adversely affect our results of operations, disappoint analysts and investors, or cause our stock price to decline. Furthermore, a decrease in orders in a given period could negatively affect our revenues in future periods. The COVID-19 pandemic may also have the effect of heightening many of the other risks described in the “Risk Factors” section of our December 31, 2020 Annual Report on Form 10-K filed March 25, 2021, including risks associated with our customers and supply chain. We may take further actions that alter our operations as may be required by federal, state, or local authorities, or which we determine are in our best interests. While much of our operations can be performed remotely, certain activities often require personnel to be on-site, and our ability to carry out these activities have been, and may continue to be negatively impacted if our employees or local personnel are not able to travel. In addition, for activities that may be conducted remotely, there is no guarantee that we will be as effective while working remotely because our team is dispersed and many employees and their families have been negatively affected, mentally or physically, by the COVID-19 pandemic. Decreased effectiveness and availability of our team could harm our business. In addition, we may decide to postpone or cancel planned investments in our business in response to changes in our business as a result of the spread of COVID-19, which may impact our ability to attract and retain customers and our rate of innovation, either of which could harm our business. We do not yet know the full extent of potential delays or impacts on our business, operations, or the global economy as a whole. While there have recently been vaccines developed and administered, and certain government orders and restrictions in particular cities, counties, and states have been lifted as the spread of COVID-19 starts to get contained and mitigated, we cannot predict the timing of the vaccine roll-out globally or the efficacy of such vaccines, and we do not yet know how businesses, customers, contractors, suppliers, or our partners will operate in a post COVID-19 environment, especially if additional or supplemental governmental orders, limitations, and restrictions are reinstated. There may be additional costs or impacts to our business and operations, including when we are able to resume in-person activities, travel, and events. In addition, there is no guarantee that a future outbreak of this or any other widespread epidemics will not occur, or that the global economy will recover, either of which could harm our business . Although the Company’s revenue growth during the prior year slowed due to the effects of COVID-19, the Company was able to mitigate the effects, to some degree, of the reduced revenue attributable to the economic impact of COVID-19 as a result of implementing a reduction in force and strict cost containment measures. Management’s plans with respect to the above is to continue its efforts towards responding to the changing economic landscape attributable to COVID-19, to continue to reduce costs, conserve cash, strengthen margins, and improve company-wide execution. Specific actions already implemented by management include a reduction in force, a limited freeze on hiring, reduced work week, minimizing overtime, travel and entertainment, and contractor costs. On April 7, 2020, the Company implemented a cost reduction plan which included the termination of certain employees and elimination of certain costs. Savings from this effort are estimated to be $2.5 million on an annual basis. While management expects these actions to result in prospective cost reductions, management is also committed to conserve cash, securing debt and/or equity financing to ensure that liquidity will be sufficient to meet the Company’s cash requirements through at least a period of the next twelve months. Management believes potential sources of liquidity include at least the following: ▪ In May 2019, the Company filed a Form S-3 prospectus with the Securities and Exchange Commission which became effective on June 19, 2019, and allows the Company to offer up to $100,000,000 aggregate dollar amount of shares of its common stock, preferred stock, debt securities, warrants to purchase its 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, in any combination, together or separately, in one or more offerings, in amounts, at prices and on the terms that the Company will determine at the time of the offering and which will be set forth in a prospectus supplement and any related free writing prospectus. ▪ On April 24, 2020, the Company completed a $6.0 million debt financing on a non-interest bearing convertible note with a 10% original issue discount. The first tranche of $3.0 million was received on April 27, 2020, with an additional $3.0 million available beginning seven months from the date of closing at the option of the Company conditioned upon meeting certain requirements which have been satisfied. This right expired in April 2021. The note is repayable in twenty-two installments beginning three months after closing in cash or shares of the Company’s common stock. ▪ On March 1, 2021, the Company entered into a Securities Purchase Agreement with an accredited investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, 1,497,006 shares of the Company’s common stock, par value $0.0001 per share, to the purchaser at an offering price of $6.68 per share. The registered offering was conducted pursuant to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-231513), which was initially filed with the Securities and Exchange Commission on May 15, 2019; and was declared effective on June 19, 2019. As compensation for their services, the Company paid to the placement agents a fee equal to 7% of the gross proceeds received by the Company as a result of the registered offering, and reimbursed the placement agents for certain expenses incurred in connection with such offering. The net proceeds from the registered offering are approximately $9.2 million after deducting certain fees due to the placement agents’ and the Company’s transaction expenses. The net proceeds received by the Company will be used for general corporate and working capital purposes. As a result of management’s cost reduction plans, the Company’s sources of liquidity and management’s most recent cash flow forecasts, management believes that the Company has sufficient liquidity to satisfy its anticipated cash requirements for at least the next twelve months. However, there can be no assurance that management’s cost reduction efforts will be effective, the forecasted cash flows will be achieved, or that external sources of financing, including the issuance of debt and/or equity securities, will be available at times and on terms acceptable to the Company, or at all. Basis of Presentation The accompanying consolidated financial statements have been prepared on an accrual basis of accounting in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”), as set forth in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”). The unaudited consolidated financial statements herein have been prepared by the Company pursuant to the rules and regulations of the United States Securities Exchange Commission (“SEC”). The accompanying interim unaudited consolidated financial statements have been prepared under the presumption that users of the interim financial information have either read or have access to the audited consolidated financial statements for the latest year ended December 31, 2020. Accordingly, note disclosures which would substantially duplicate the disclosures contained in the December 31, 2020, audited consolidated financial statements have been omitted from these interim unaudited consolidated financial statements. The Company evaluated all subsequent events and transactions through the date of filing this report. In the opinion of management, all adjustments considered necessary for a fair presentation have been included in the accompanying condensed financial statements. Operating results for the three and six months ended June 30, 2021, are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. For further information, refer to the audited consolidated financial statements and notes for the year ended December 31, 2020, included in the Company’s Annual Report on Form 10-K filed with the SEC on March 25, 2021. Principles of Consolidation The accompanying consolidated financial statements include the accounts of OSS, which include the acquisition of Concept Development Inc., its wholly owned subsidiary, OSS GmbH, which also includes the acquisition of Bressner Technology GmbH. Intercompany balances and transactions have been eliminated in consolidation.

Significant Accounting Policies

Significant Accounting Policies	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies	NOTE 2 – SIGNIFICANT ACCOUNTING POLICIES There have been no changes to our accounting policies disclosed in our audited consolidated financial statements and the related notes for the year ended December 31, 2020, except for the addition of a definition of short-term investments as follows: Short-term Investments Short-term investments consist predominantly of commercial paper, corporate debt securities, U.S. Treasury securities, and asset-backed securities. The Company classifies short-term investments based on the facts and circumstances surrounding the investments at the time of purchase and evaluates such classification as of each balance sheet date. On June 30, 2021, all short-term investments were classified as available-for-sale. Unrealized gains and losses for available-for-sale securities are included in accumulated other comprehensive income—a component of stockholders’ equity. Realized gains and losses are determined using the specific identification method and are included in other income (expense) in the consolidated statement of operations. The Company evaluates its investments to determine whether those with unrealized loss positions are other than temporarily impaired. Impairments are considered to be other than temporary if they are related to deterioration in credit risk or if it is likely that the Company will sell the securities before recovery of their cost basis. Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates and assumptions. On an ongoing basis, our management evaluates these estimates and assumptions, including those related to determination of standalone selling prices of our products and services, allowance for doubtful account and sales reserves, income tax valuations, stock-based compensation, goodwill, intangible assets and inventory valuations and recoverability. We base our estimates on historical data and experience, as well as various other factors that our management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities. As of June 30, 2021, we had $3,485,709 in net deferred tax assets (DTAs). These DTAs include approximately $5.3 million related to net operating loss carryforwards that can be used to offset taxable income in future periods and reduce our income taxes payable in those future periods. At this time, we consider it more likely than not that we will have sufficient taxable income in the future that will allow us to realize these DTAs. However, it is possible that economic conditions may On March 11, 2021, Congress passed, and the President signed into law, the American Rescue Plan Act, 2021 (the “ARP”), which includes certain business tax provisions. At this point we do not believe that these changes will have a material impact on our income tax provision for 2021. We will continue to evaluate the impact of new legislation on our financial position, results of operations, and cash flows. Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy and financial markets. We are not aware of any specific event or circumstance that would require an update to our estimates or assumptions or a revision of the carrying value of our assets or liabilities as of the date of this Quarterly Report on Form 10-Q. These estimates and assumptions may change as new events occur and additional information is obtained. As a result, actual results could differ materially from these estimates and assumptions. Recent Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Recently Implemented Accounting Pronouncements In September 2018, the FASB issued ASU No. 2018-07, Stock-based Compensation: Improvements to Nonemployee Share-based Payment Accounting t materially impact the Company’s consolidated financial statements In July 2017, the FASB issued Accounting Standards Update No. 2017-11, Accounting for financial instruments with down rounds features (i) , and the existence of s often result in an accounting conclusion that the evaluated feature or instrument is i was adopted early by the Company on April 1, 2020 ’s April 2020 convertible note payable described in Note 8 possesses In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

Short-Term Investments

Short-Term Investments	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Short-Term Investments	NOTE 3 SHORT-TERM INVESTMENTS The Company’s short-term investments by significant investment category as of June 30, 2021, are as follows: Description Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Accrued Interest Estimated Fair Value Level 1: (1) Cash alternatives $ 734,556 $ - $ - $ - $ 734,556 Certificates of deposit 593,602 - 16 1,129 594,715 Corporate bonds and notes 4,854,610 - 465 47,311 4,901,456 Municipal Securities 8,264,729 1,082 - 27,711 8,293,522 $ 14,447,497 $ 1,082 $ 481 $ 76,151 $ 14,524,249 (1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities. Cash alternatives represents cash balances in savings accounts which are temporarily on-hand that are immediately available for investments in accordance with the Company’s investment policy. The Company typically invests in highly rated securities and its investment policy limits the amount of credit exposure to any one issuer. The policy requires investments in fixed income instruments denominated and payable in U.S. dollars only and requires investments to be investment grade, with a primary objective of minimizing the potential risk of principal loss.

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jun. 30, 2021
Accounts Receivable Net Current [Abstract]
Accounts Receivable	NOTE 4 – ACCOUNTS RECEIVABLE Accounts receivable, net consists of the following: June 30, December 31, 2021 2020 Accounts receivable $ 6,554,902 $ 7,491,397 Unbilled receivables 4 106 6,554,906 7,491,503 Less: allowance for doubtful accounts (27,797 ) (33,120 ) $ 6,527,109 $ 7,458,383 Unbilled receivables include amounts associated with percentage of completion and milestone billing accounting, which includes cost and gross profit earned in excess of billing, not currently billable due to contractual provisions. (Recovery) provision for bad debt expense related to accounts receivable was $11,688 and $994 for the three month period ended June 30, 2021 and 2020, respectively, and ($4,902) and ($1,411) for the six month period ended June 30, 2021 and 2020, respectively.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Inventories	NOTE 5 – INVENTORIES Inventories, net consist of the following: June 30, December 31, 2021 2020 Raw materials $ 4,563,989 $ 5,210,327 Sub-assemblies 323,493 255,699 Work-in-process 473,027 407,328 Finished goods 7,663,042 4,424,603 13,023,551 10,297,957 Less: reserves for obsolete and slow-moving inventories (612,061 ) (650,453 ) $ 12,411,490 $ 9,647,504

Long-Lived Intangible Assets

Long-Lived Intangible Assets	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Long-Lived Intangible Assets	NOTE 6 – LONG LIVED INTANGIBLE ASSETS Definite lived intangible assets related to acquisition are as follows, as of June 30, 2021: Expected Life Remaining Months Gross Intangible Assets Accumulated Amortization Net Intangible Assets Customer lists and relationships 36 to 60 months 4 to 26 months $ 2,084,515 $ (1,812,427 ) $ 272,088 Drawings and technology 36 months 0 months 760,207 (760,207 ) - Trade name, trademarks & other 24 to 36 months 4 months 447,274 (410,661 ) 36,613 Non-compete 36 months 4 months 246,797 (221,042 ) 25,755 $ 3,538,793 $ (3,204,337 ) $ 334,456 Definite lived intangibles assets related to acquisitions are as follows, as of December 31, 2020: Expected Life Remaining Months Gross Intangible Assets Accumulated Amortization Net Intangible Assets Customer lists and relationships 36 to 60 months 10 to 32 months $ 2,084,515 $ (1,578,178 ) $ 506,337 Drawings and technology 36 months 0 months 760,207 (760,207 ) - Trade name, trademarks & other 24 to 36 months 10 months 447,274 (355,742 ) 91,532 Non-compete 36 months 10 months 246,797 (182,409 ) 64,388 $ 3,538,793 $ (2,876,536 ) $ 662,257 As of June 30, 2021, amortization expense of the definite lived intangible assets for the years remaining is as follows: 2021 2022 2023 Total $ 229,071 $ 63,231 $ 42,154 $ 334,456 Amortization expense recognized during the three months ended June 30, 2021 and 2020, was $163,901 and $174,525, respectively, and $327,801 and $349,051 for the six months ended June 30, 2021 and 2020, respectively.

Accrued Expenses and Other Liab

Accrued Expenses and Other Liabilities	6 Months Ended
	Jun. 30, 2021
Accrued Liabilities And Other Liabilities [Abstract]
Accrued Expenses and Other Liabilities	NOTE 7 – ACCRUED EXPENSES AND OTHER LIABILITIES Accrued expenses and other liabilities consist of the following: June 30, December 31, 2021 2020 Accrued compensation and related liabilities $ 984,322 $ 932,988 Deferred revenue and customer deposits 885,356 1,096,672 Warranty reserve 468,542 425,636 Deferred rent 272,870 312,909 Other accrued expenses 425,703 713,239 $ 3,036,793 $ 3,481,444

Debt

Debt	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Debt	NOTE 8 – DEBT Bank Lines of Credit Bressner Technology GmbH has three revolving lines of credit with German institutions totaling €2,700,000 (US$3,199,886). Borrowing under the lines of credit bear interest at a variable rate of Euribor plus a stated rate. The current rates for the lines of credit are from 3.10% to 4.0%, with the balances being open indefinitely or until occurrence of a defined change of control event. There were no outstanding lines of credit balances as of June 30, 2021 and December 31, 2020. Foreign Debt Obligations Bressner Technology GmbH has three term loans outstanding as of June 30, 2021, with a total balance outstanding of €1,500,000 (US$1,777,715) as follows: • On June 18, 2021, Bressner converted €500,000 of its line of credit from UniCredit Bank into a note payable which bears interest at 1.55% with interest only payments to be paid on a quarterly basis. The note is due on December 17, 2021, with a payment of principal and unpaid interest due upon maturity. The balance outstanding as of June 30, 2021, is €500,000 (US$592,572); • On June 4, 2021, Bressner converted €500,000 of its line of credit from UniCredit Bank into a note payable which bears interest at 1.55% with interest only payments to be paid on a quarterly basis. The note is due on November 30, 2021, with a payment of principal and unpaid interest due upon maturity. The balance outstanding as of June 30, 2021, is €500,000 (US$592,572); • On April 9, 2021, Bressner converted €500,000 of its line of credit from UniCredit Bank into a note payable which bears interest at 1.60% with interest only payments to be paid on a quarterly basis. The note is due on September 30, 2021, with a payment of principal and interest due upon maturity. The balance outstanding as of June 30, 2021, is €500,000 (US$592,571); On June 25, 2020, Bressner converted €500,000 of its line of credit from UniCredit Bank into a note payable which bore interest at 1.87% interest and matured on June 18, 2021, with a balloon payment of principal and interest due upon maturity. The balance outstanding was paid in full as of June 30, 2021. The balance outstanding as of December 31, 2020, was €500,000 (US$611,406); On April 9, 2020, Bressner converted €500,000 of its line of credit from UniCredit Bank into a note payable which bore interest at 1.90% and matured on April 9, 2021, with a balloon payment of principal and interest due upon maturity. The amount outstanding was paid in full. The balance outstanding as of December 31, 2020, was €500,000 (US$611,406); Bressner entered into a note payable on April 1, 2019, in the amount of €500,000 (US$586,189) which bore interest at 2.25% and matured on March 30, 2021 with monthly payments of principal and interest of €22,232 (US$24,960). The balance outstanding was paid in full as of March 31, 2021. The balance outstanding as of December 31, 2020, was €66,446 (US$81,251); Bressner entered into a note payable in September 2019 in the amount of €300,000 (US$336,810) which bore interest at 1.65% and matured on March 24, 2020, with a balloon payment of principal and interest. The outstanding balance was paid in full as of March 31, 2020; and Bressner entered into a note payable in September 2017, in the amount of €400,000 (US$436,272) which bore interest at 2.125% and matured on January 31, 2020 and was paid in full. Notes Payable In April 2019, the Company borrowed $350,000 from three individuals for a two-year Notes Payable – Related Parties In April 2019, the Company borrowed $1,150,000 from three individuals who serve on the Company’s board of directors for a two-year Paycheck Protection Program Loan On April 28, 2020, One Stop Systems, Inc. received authorization pursuant to the Paycheck Protection Program (PPP) of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) as administered by the U.S. Small Business Administration (the “SBA”) for a “PPP” loan. On May 11, 2020, the Loan was funded, and the Company received proceeds in the amount of $1,499,360 (the “PPP Loan”). The PPP Loan, which took the form of a two-year promissory note (the “PPP Note”), matures on April 28, 2022 and bears interest at a rate of 1.0% per annum. Monthly principal and interest payments, less the amount of any potential forgiveness (discussed below), was initially to commence on October 28, 2020. The Company did not provide any collateral or guarantees for the PPP Loan, nor did the Company pay any facility charge to obtain the PPP Loan. The PPP Note provides for customary events of default, including, among others, those relating to failure to make payment, breaches of any term, obligation, covenant, or condition contained in the PPP Note and payment of unauthorized expenses or use of proceeds contrary to CARES Act rules. Under the original rules, all or a portion of the PPP Loan may be forgiven by the SBA and lender upon application by the Company beginning 60 days but not later than 120 days after loan approval and upon documentation of expenditures in accordance with the SBA requirements. Under the CARES Act, loan forgiveness is available for the sum of documented payroll costs, covered rent payments, and covered utilities during the eight-week However, the Paycheck Protection Program Flexibility Act of 2020 (the “PPP Flexibility Act”), enacted on June 5, 2020, amended the original rules governing loans granted under the PPP, among others, as follows: (i) the time period to spend the received funds was extended from the original eight weeks to twenty-four weeks from the date the PPP Loan was originated, during which PPP funds need to be expended in order to be forgiven; (ii) at least 60 % of PPP funds must be spent on payroll costs, with the remaining 40 % available to spend on other eligible expenses; (iii) payments are deferred until the date on which the amount of forgiveness determined is remitted to the lender, and if a borrower fails to seek forgiveness within 10 months after the last day of its covered period, then payments will begin on the date that is 10 months after the last day of the covered period; and (iv) the PPP Flexibility Act modified the CARES Act by increasing the maturity date for loans made after the effective date from two years to a minimum maturity of five years from the date on which the borrower applies for loan forgiveness. Existing PPP loans made before the new legislation retain their original two-year term, but may be renegotiated between a lender and a borrower to match the 5-year term permitted under the PPP Flexibility Act. The Company submitted an application with the lender to forgive the PPP Loan, in accordance with SBA Procedural Notice, Control No. 5000-20057, effective as of October 2, 2020. On May 3, 2021, the Company received notification from the SBA that its PPP Loan of $1,499,360 plus accrued interest of $14,994 had been fully forgiven and such amount has been recognized as other income in the consolidated statement of operations. Senior Secured Convertible Note On April 20, 2020, the Company entered into a Securities Purchase Agreement with an institutional investor, providing for the issuance of the Company’s Senior Secured Convertible Promissory Notes with a principal face amount of up to $6,000,000. The notes are, subject to certain conditions, convertible into shares of the Company’s common stock, par value $0.0001 per share, at an initial conversion price per share of $2.50. The notes will be issued with a 10% original issue discount. At the initial closing of this offering, the Company issued notes of $3,000,000, and can consummate additional closings of up to $3,000,000, subject to the prior satisfaction of certain closing conditions which have been satisfied. The initial investor purchased the notes for an aggregate purchase price of $2,700,000 at the initial closing. The notes bear no interest rate (except upon event of default) and, unless earlier converted or redeemed, will mature on April 1, 2022. The Notes are convertible at any time, in whole or in part, at the option of the investors, into shares of common stock at the initial conversion price of $2.50 per share. The conversion price is subject to adjustment for issuances of securities below the conversion price then in effect and for stock splits, combinations or similar events. If immediately following the close of business on the six month anniversary of the issuance date of each note, the conversion price then in effect exceeds 135% of the volume weighted average price VWAP (the “Market Price”), the initial conversion price under any such note will be automatically lowered to the Market Price. Commencing July 1, 2020, the Company has made monthly amortization payments equal to 1/22nd Subject to the satisfaction of certain equity conditions set forth in the notes, installment amounts may be satisfied in shares of our common stock, with such installment conversion at a conversion price equal to the lower of (i) the conversion price then in effect; and (ii) the greater of (x) the floor price of $1.00 (80% of the Nasdaq market price at date of purchase agreement) and (y) the lower of (I) 82.5% the volume weighted average price of our common stock on the trading day immediately before the applicable installment date and (II) 82.5% of the quotient of (A) the sum of the volume weighted average price of our common stock for each of the three (3) trading days with the lowest volume weighted average price of our common stock during the twenty (20) consecutive trading day period ending and including the trading day immediately prior to the applicable installment date, divided by (B) three (3). Shares of our common stock to be issued with respect to any such installment will be pre-delivered on the second trading day after the applicable installment notice date (as defined in the notes) with a true-up on the applicable installment date. The market value of any installment amount below the floor price will be cash settled on the applicable installment date. Management evaluated the embedded conversion feature to determine whether bifurcation was required as a separate derivative liability. Management first determined that the conversion feature was not within the scope of ASC 480. It then determined that the embedded derivative should be separated from the host instrument and accounted for as a derivative instrument because it met the criteria of ASC 815-15-25-1, primarily because the contract provides for delivery of an asset that puts the recipient in substantially the same position as net settlement. However, in part due to the Company’s adoption of ASC 2017-11 on April 1, 2020, which allowed management to disregard the down round provisions of the conversion feature, management determined that a scope exception to derivative accounting existed by satisfying the additional conditions necessary for equity classification specified by ASC 815-10-15-74 and ASC 815-40-25. As a result of management’s analysis, the conversion feature was not accounted for separately from the debt instrument and the Company will recognize the contingent beneficial conversion feature when, or if, such is triggered. The original issue discount of 10% on the Senior Secured Convertible Note was recorded as a debt discount, decreasing the note payable. This debt discount is amortized to interest expense using the effective interest rate method over the term of the loan. For the three months ended June 30, 2021 and 2020, total debt discount amortization was $44,431 and $49,141, respectively, and $95,359 and $49,141 for the six months ended June 30, 2021 and 2020, respectively. Such amounts are included in interest expense in the accompanying consolidated statements of operations. Debt issuance costs in the amount of $316,274 related to this indebtedness were deducted from the face value of the note. Such costs are amortized to interest expense using the effective interest rate method over the term of the loan. Total debt issuance costs amortized during the three months ended June 30, 2021 and 2020, was $46,842 and $51,806, respectively, and $100,532 and $51,806 for the six months ended June 30, 2021 and 2020, respectively. Such amounts are included in interest expense in the accompanying consolidated statements of operations. Debt Discount The relative fair value of warrants issued in connection with the notes payable described above were recorded as debt discount, decreasing notes payable and related-party notes payable and increasing additional paid-in-capital on the accompanying consolidated balance sheets. The debt discounts are being amortized to interest expense over the term of the corresponding notes payable using the straight-line method which approximates the effective interest method. For the three months ended June 30, 2021 and 2020, total debt discount amortization was $1,254 and $7,520, respectively, and $8,773 and $15,040 for the six months ended June 30, 2021 and 2020, respectively. Such amounts are included in interest expense in the accompanying consolidated statements of operations. A summary of outstanding debt obligations as of June 30, 2021, is as follows: Loan Description Current Interest Rate Maturity Date Balance (Euro) Balance ($) Current Portion Long-term Portion Domestic: Notes payable - third party 9.50% April-21 € - $ - $ - $ - Related party notes payable 9.50% April-21 - - - - Convertible senior secured note 10% OID April-22 - 2,590,909 2,590,909 - PPP loan 1.00% April-22 - - € - $ 2,590,909 $ 2,590,909 $ - Foreign: Uni Credit Bank AG 1.60% September-21 € 500,000 $ 592,571 $ 592,571 $ - Uni Credit Bank AG 1.55% November-21 500,000 592,572 592,572 Uni Credit Bank AG 1.55% December-21 500,000 592,572 592,572 - € 1,500,000 $ 1,777,715 $ 1,777,715 $ - $ 4,368,624 $ 4,368,624 $ - Outstanding debt obligations as of June 30, 2021, consist of the following: Period Ended June 30, 2021 Related Parties Third Parties Convertible Note PPP Loan Foreign Total Current portion: Principal $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 Less discount (36,246 ) - - (36,246 ) Less loan origination costs - - (38,212 ) - - (38,212 ) Net liability $ - $ - $ 2,516,451 $ - $ 1,777,715 $ 4,294,166 Long-term portion: Principal $ - $ - $ - $ - $ - $ - Less discount - - - - - - Less loan origination costs - - - - - - Net liability $ - $ - $ - $ - $ - $ - Total: Principal $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 Less discount - - (36,246 ) - - (36,246 ) Less loan origination costs - - (38,212 ) - - (38,212 ) Net liability $ - $ - $ 2,516,451 $ - $ 1,777,715 $ 4,294,166 Total future principal payments under notes payable and related party notes payable as of June 30, 2021, are as follows: Period Ending June 30, Related Parties Third Parties Convertible Note PPP Loan Foreign Total Discount / Loan Original Costs 2022 $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 $ (74,458 ) Total minimum payments - - 2,590,909 - 1,777,715 4,368,624 (74,458 ) Current portion of notes payable - - (2,590,909 ) - (1,777,715 ) (4,368,624 ) 74,458 Notes payable, net of current portion $ - $ - $ - $ - $ - $ - $ -

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jun. 30, 2021
Stockholders Equity Note [Abstract]
Stockholders' Equity	NOTE 9 – STOCKHOLDERS’ EQUITY The Company’s amended and restated certificate of incorporation filed on December 14, 2017, authorizes the Company to issue 10,000,000 shares of preferred stock and 50,000,000 shares of common stock. Stock Options Effective June 24, 2020, the Company entered into an employment agreement with Mr. Raun to serve as the Company’s president and chief executive officer. Pursuant to the terms of the employment agreement, Mr. Raun is entitled to receive 412,125 restricted stock units (“RSUs”) that shall vest over three years, with one third The ISOs shall vest at the end of each of the second and fourth quarters, the price of the Company’s common stock as of the end of quarter two or quarter four, as applicable, shall be determined using the ten-day trailing volume weighted average price (“VWAP”) after reporting of quarter two and quarter four earnings, as applicable. The date of each such determination shall be referred to as a “Determination Date.” If on any Determination Date the Company’s stock price has increased from the prior Determination Date, then a portion of the ISOs shall become vested. The number of ISOs that shall become vested on a Determination Date is determined as follows: ((Price at Determination Date – Price at prior Determination Date) x 100) * 1,177.52 = Vested ISOs. If on any Determination Date the Company’s stock price is $5.50 per share, all ISOs shall immediately become vested. As of June 30, 2021, Mr. Raun’s ISOs are fully vested, but not exercised, based upon achievement of the specified performance objectives. In the event, that Mr. Raun’s employment agreement is terminated for a reason other than “good cause” or for “good reason”, Mr. Raun, upon executing an effective waiver and release of claims, unvested RSUs shall accelerate so that an additional twelve (12) months of RSUs shall vest from the termination date. A summary of stock option activity under each of the Company’s stock option plans during the six months ended June 30, 2021, is as follows: Stock Options Outstanding Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value Outstanding on January 1, 2021 1,320,267 $ 1.81 6.18 $ 5,248,333 Granted - $ - - $ - Forfeited / Canceled (13,772 ) $ 2.89 6.63 $ 39,276 Exercised (210,188 ) $ 1.13 3.10 $ 981,085 Outstanding on June 30, 2021 1,096,307 $ 1.93 6.47 $ 4,227,972 Exercisable as of June 30, 2021 1,082,597 $ 1.93 6.46 $ 4,182,562 Vested and expected to vest as of June 30, 2021 1,095,896 $ 1.93 6.47 $ 4,226,609 The following table presents details of the assumptions used to calculate the weighted-average grant date fair value of common stock options granted by the Company. There were no options granted during the six month period ended June 30, 2021: For the Six Months Ended June 30, 2021 2020 Expected term (in years) - 5.00 - 5.86 Expected volatility 0.00 % 43.50 % Risk-free interest rate 0.00 % 0.33% -1.41% Weighted average grant date fair value per share $ - $ 0.083 Grant date fair value of options vested $ 4,182,562 $ 529,471 Intrinsic value of options exercised $ 43,473 $ 813,148 As of June 30, 2021, the amount of unearned stock-based compensation estimated to be expensed from 2021 through 2025 related to unvested common stock options is $25,730, net of estimated forfeitures. The weighted-average period over which the unearned stock-based compensation is expected to be recognized is 0.2 years. If there are any modifications or cancellations of the underlying unvested awards, the Company may be required to accelerate, increase, or cancel any remaining unearned stock-based compensation expense or calculate and record additional expense. Future stock-based compensation expense and unearned stock-based compensation will increase to the extent that the Company grants additional common stock options or other stock-based awards. Restricted Stock Units Restricted stock units may be granted at the discretion of the compensation committee of the Board of Directors under the Company’s 2017 Equity Incentive Plan that was adopted on October 10, 2017 (the “2017 Plan”) in connection with the hiring and retention of personnel and are subject to certain conditions. Restricted stock units generally vest quarterly or semi-annually over a period of one to three years and are typically forfeited if employment is terminated before the restricted stock unit vest. The compensation expense related to the restricted stock units is calculated as the fair value of the common stock on the grant date and is amortized to expense over the vesting period and is adjusted for estimated forfeitures. The Company’s restricted stock unit activity for the six months ended June 30, 2021, is as follows: Restricted Stock Units Number of Shares Weighted Average Grant Date Fair Value Unvested on January 1, 2021 575,922 $ 2.65 Granted 416,946 $ 5.77 Vested (133,380 ) $ 3.33 Canceled (3,125 ) $ 5.77 Unvested on June 30, 2021 856,363 $ 4.05 As of June 30, 2021, there was $2,645,821 of unrecognized compensation cost related to unvested restricted stock units which is expected to be recognized over a weighted average period of 1.44 years. Stock-based compensation expense for the three and six month periods ended June 30, 2021 and 2020, was comprised of the following: For the Three Months Ended June 30, For the Six Months Ended June 30, Stock-based compensation classified as: 2021 2020 2021 2020 General and administrative $ 215,825 $ 42,351 $ 616,825 $ 202,031 Production 78,657 17,769 93,316 35,738 Marketing and selling 114,319 17,074 129,716 34,366 Research and development 56,535 8,184 63,873 21,004 $ 465,336 $ 85,378 $ 903,730 $ 293,139 Warrants The following table summarizes the Company’s warrant activity during the six months ended June 30, 2021: Number of Warrants Weighted Average Exercise Price Warrants outstanding – January 1, 2021 505,946 $ 5.00 Warrants granted - $ - Warrants exercised (35,067 ) $ 1.85 Warrants outstanding – June 30, 2021 470,879 $ 5.23 Amendment to 2017 Plan On May 19, 2021, the Company’s stockholders approved, by a majority of votes cast, the Company’s proposal to increase the authorized shares under the 2017 Plan from 1,500,000 shares to 3,000,000 shares of common stock of the Company pursuant to the terms and conditions of the 2017 Plan. S-8 Registration Statement On June 21, 2021, the Company filed a Form S-8 Registration Statement relating to 3,543,114 shares of the Company’s common stock, par value $0.0001 per share, issuable to the employees, officers, directors, consultants and advisors of the Company under the Company’s 2017 Plan, One Stop Systems, Inc. 2015 Stock Option Plan, and One Stop Systems, Inc. 2011 Stock Option Plan.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	NOTE 10 – COMMITMENTS AND CONTINGENCIES Legal We are subject to litigation, claims, investigations, and audits arising from time to time in the ordinary course of our business. On September 29, 2020, the Company’s former Chief Executive Officer, Stephen D. Cooper, commenced an action entitled Stephen D. Cooper v. One Stop Systems, Inc. et al, in San Diego County Superior Court, Case No. 37-2020-00034492-CU-BC-CTL. Mr. Cooper alleges claims for (1) breach of written contract and (2) violation of California Labor Code Sections 201 and 203 in connection with the Company’s alleged failure to pay unpaid wages and an earned bonus following the Company’s termination of Mr. Cooper’s employment with the Company in February 2020. Mr. Cooper sought unspecified compensatory damages and statutory penalties. The Company denied Mr. Cooper’s allegations. On December 8, 2020, the Company filed a cross-complaint (“Cross Complaint”) against Mr. Cooper for (1) breach of contract (in connection with a binding commitment letter and Mr. Cooper’s employment agreement), (2) intentional misrepresentation, (3) negligent misrepresentation, and (4) breach of fiduciary duty pursuant to which the Company sought compensatory damages, punitive damages, pre-judgment interest, attorneys’ fees, and the cost of suit incurred in connection with Mr. Cooper’s complaint and the Cross Complaint. On June 28, 2021, pursuant to the parties’ agreement to resolve all of their disputes, the court entered a dismissal with prejudice of the litigation, including all claims and cross-claims . As a result, his action has been r esolved . Guarantees and Indemnities The Company has made certain indemnities, under which it may be required to make payments to an indemnified party, in relation to certain transactions. The Company indemnifies its directors, officers, employees, and agents to the maximum extent permitted under the laws of the State of Delaware. In connection with its facility lease, the Company has indemnified its lessor for certain claims arising from the use of the facilities. Also, in connection with its Credit Agreement, the Company has agreed to indemnify its lender and others related to the use of the proceeds and other matters. The duration of the indemnities varies, and in many cases is indefinite. These indemnities do not provide for any limitation of the maximum potential future payments the Company could be obligated to make. Historically, the Company has not been obligated to make any payments for these obligations and no liabilities have been recorded for these indemnities in the accompanying consolidated balance sheets. Leases The Company leases its offices, manufacturing, and warehouse facility in San Diego County under a non-cancelable operating lease. Our corporate headquarters are in a leased space comprising of approximately 29,342 August 2024 Additionally, the Company entered into a two year lease beginning July 2021, for a 1,632 square foot lab facility in Anaheim, California. The Company also leases a 3,208 square foot facility in Salt Lake City, Utah that houses our Ion software development team. Bressner Technology GmbH, leases space comprising of 8,073 square feet on a month-to-month basis. For the three months ended June 30, 2021 and 2020, rent expense was $201,120 and $176,739, respectively. For the six months ended June 30, 2021 and 2020, rent expense was $452,250 and $366,156, respectively. Purchase Commitments In the normal course of business, the Company may enter into purchase commitments for inventory components to be delivered based upon pre-established delivery schedules over a period that may exceed one year. Customer Concentration During the three month period ended June 30, 2021, the Company had three customers and in the same period in 2020, two customers that had approximately 42% and 21%, respectively of revenue for which each represented greater than 10% of our consolidated annual revenue. During the six month period ended June 30, 2021, the Company had two customers and in the same period in 2020, one customer that had approximately 33% and 34%, respectively of revenue for which each represented greater than 10% of our consolidated annual revenue. As of June 30, 2021, the Company had three customers and as of December 31, 2020, three customers that had approximately 68% and 64%, respectively of trade accounts receivables for which each customer’s balances represented greater than 10% of our consolidated trade accounts receivable balance. During the three month periods ended June 30, 2021 and 2020, the Company had approximately 23% and 47%, respectively of purchases from vendors/suppliers for which each represents greater than 10% of our consolidated purchases. During the six month periods ended June 30, 2021 and 2020, the Company had approximately 23% and 33%, respectively of purchases from vendors/suppliers for which each represents greater than 10% of our consolidated purchases.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	NOTE 11 – RELATED PARTY TRANSACTIONS In April 2019, certain members of the Company’s Board of Directors executed definitive agreements to commit funds of up to $4,000,000 as a credit facility. The Company initially borrowed $1,150,000 from members of the Board of Directors and $350,000 from other shareholders for a two-year

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	NOTE 12 – NET INCOME (LOSS) PER SHARE Basic and diluted net income (loss) per share was calculated as follows for the three and six month periods ended June 30, 2021 and 2020: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Basic and diluted net income (loss) per share: Numerator: Net income (loss) $ 1,697,122 $ (12,162 ) $ 1,738,320 $ (1,108,194 ) Denominator: Weighted average common shares outstanding - basic 18,513,620 16,488,325 17,934,022 16,410,660 Effect of dilutive securities 1,221,763 - 1,371,820 - Weighted average common shares outstanding - diluted 19,735,383 16,488,325 19,305,842 16,410,660 Net income (loss) per common share: Basic $ 0.09 $ (0.00 ) $ 0.10 $ (0.07 ) Diluted $ 0.09 $ (0.00 ) $ 0.09 $ (0.07 )

Revenue, Segment and Geographic

Revenue, Segment and Geographic Information	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Revenue, Segment and Geographic Information	NOTE 13 – REVENUE, SEGMENT AND GEOGRAPHIC INFORMATION The Company operates in two reportable segments: the design and manufacture of high-performance customized computers and flash arrays, which is inclusive of in-flight entertainment & connectivity, and value-added reseller with minimal customization. The Company evaluates financial performance on a company-wide basis. As of June 1, 2020, CDI’s operations became fully integrated and combined with the operation of OSS’ core business operations located in Escondido, California. It is the Company’s intention to dissolve CDI as a standalone entity upon resolution of certain outstanding items. Segment detail for the three and six month periods ended June 30, 2021 and 2020, is as follows: For the Three Months Ended June 30, 2021 For the Three Months Ended June 30, 2020 OSS Bressner Total OSS Bressner Total Revenues $ 9,102,435 $ 5,802,574 $ 14,905,009 $ 7,305,302 $ 4,320,025 $ 11,625,327 Cost of revenues (5,762,867 ) (4,489,398 ) (10,252,265 ) (4,802,177 ) (3,497,955 ) (8,300,132 ) Gross profit 3,339,568 1,313,176 4,652,744 2,503,125 822,070 3,325,195 Gross margin % 36.7 % 22.6 % 31.2 % 34.3 % 19.0 % 28.6 % Total operating expenses (3,172,432 ) (963,662 ) (4,136,094 ) (2,844,838 ) (886,243 ) (3,731,081 ) Income (loss) from operations $ 167,136 $ 349,514 $ 516,650 $ (341,713 ) $ (64,173 ) $ (405,886 ) For the Six Months Ended June 30, 2021 For the Six Months Ended June 30, 2020 OSS Bressner Total OSS Bressner Total Revenues $ 17,704,406 $ 10,516,355 $ 28,220,761 $ 15,745,525 $ 9,239,439 $ 24,984,964 Cost of revenues (11,104,229 ) (8,031,004 ) (19,135,233 ) (10,923,086 ) (7,340,996 ) (18,264,082 ) Gross profit 6,600,177 2,485,351 9,085,528 4,822,439 1,898,443 6,720,882 Gross profit % 37.3 % 23.6 % 32.2 % 30.6 % 20.5 % 26.9 % Total operating expenses (6,424,217 ) (1,869,630 ) (8,293,847 ) (6,831,047 ) (1,806,875 ) (8,637,922 ) Income (loss) from operations $ 175,960 $ 615,721 $ 791,681 $ (2,008,608 ) $ 91,568 $ (1,917,040 ) Revenue from customers with non-U.S. billing addresses represented approximately 65% and 56%, As of June 30, 2021, substantially all the Company’s long-lived assets are located in the United States of America with the exception of assets of $202,804 located in Germany.

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2021
Subsequent Events [Abstract]
Subsequent Events	NOTE 14 – SUBSEQUENT EVENTS The Company has evaluated subsequent events after the consolidated balance sheet dated as of June 30, 2021, through the date of filing of this quarterly report. Based upon the Company’s evaluation, management has determined that, other than as disclosed in the accompanying notes, no subsequent events have occurred that would require recognition in the accompanying consolidated financial statements or disclosure in the notes thereto.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2021
Accounting Policies [Abstract]
Liquidity, Going Concern Considerations and Management Plans	Liquidity, Going Concern Considerations and Management Plans The Company’s primary sources of liquidity have been provided by (i) the Company’s February 2018 initial public offering (net proceeds were approximately $16,100,000); (ii) March 2019 notes payable from members of the Board of Directors and others of $1,500,000; (iii) the July 2019 sale of 1,554,546 shares of the Company’s common stock for net cash proceeds of $2,488,148; (iv) the April 24, 2020 sale of $3,000,000 of Senior Secured Convertible Promissory Notes issued at a 10% original issue discount; (v) receipt of approximately $1,500,000 on April 28, 2020 of government funding under the Paycheck Protection Program, and (vi) a receipt of $9,188,673 on March 3, 2021 in a registered direct offering. As of June 30, 2021, the Company’s cash and cash equivalents were $3,975,069 and working capital was $26,954,277. Cash and cash equivalents held by Bressner totaled $1,345,037 on June 30, 2021. Bressner’s debt covenants do not permit the use of these funds by its parent company. During the six month period ended June 30, 2021, the Company experienced an operating income of $791,681, with cash generated by operating activities of $2,788,363. During the year ended December 31, 2020, the Company experienced an operating loss of $424,281, with cash used in operating activities of $250,173. The Company’s revenue growth during the prior year slowed due to the effects of COVID-19. However, resulting from a reduction in force and strict cost containment, the Company was able to mitigate the effects, to some degree, of the reduced revenue attributable to the economic impact of COVID-19. Although there are signs that COVID-19 may begin to taper off, COVID-19 still has an impact on worldwide economic activity, and the ongoing effects of the COVID-19 pandemic has adversely impacted, and may continue to adversely impact, many aspects of our business In response to the COVID-19 pandemic, many state, local, and foreign governments have put in place restrictions in order to control the spread of the disease. Such restrictions, or the perception that further restrictions could occur, have resulted in business closures, work stoppages, slowdowns and delays, work-from-home policies, travel restrictions, and cancellation or postponement of events, among other effects that impacted productivity and disrupted our operations and those of our partners, suppliers, contractors, and customers. One way that COVID-19 has directly affected our operations is that we have experienced increased pricing and/or shortages of certain parts and supplies that are necessary components to the products and services we offer to our customers, and as a result, are experiencing longer lead-times. COVID-19 has indirectly affected our operations as well. For instance, some of our customers experienced downturns or uncertainty in their own business operations and revenue, and as a result, these customers have (and may continue to) decreased or delayed their technology spending, requested pricing concessions or payment extensions, or seek to renegotiate their contracts. For example, one of our customers that uses our products and services in their business operations operates in the live event space, such as music festivals and concerts. Due to measures implemented by local and state governments to restrict public gatherings in order to stop and/or prevent the spread of COVID-19, our client was unable to generate revenue at previous levels during these times, and as a result, we provided extended payment terms for the collection of our accounts receivables for this particular customer during the pandemic. However, all outstanding accounts receivables owed by this particular customer have now been received by the Company. During the pandemic, as state, local, and foreign governments implemented (and may continue to implement) preventative measures to contain or mitigate the outbreak of COVID-19, the usage of our products and services fluctuated following such implementation, and we cannot predict how usage levels will continue to be impacted by these preventative measures. There is no assurance that customers will continue to use our products and services, or to the same extent, as the COVID-19 pandemic begins to taper off or when it has ended. As a result, it has been difficult to accurately forecast our revenues or financial results, especially given that the near and long term impact of the pandemic remains uncertain. In addition, while the potential impact and duration of the COVID-19 pandemic on the economy and our business in particular may be difficult to assess or predict, the pandemic has resulted in, and may continue to result in, significant disruption of global financial markets, and may reduce our ability to access additional capital, which could negatively affect our liquidity in the future. Our results of operations could be materially below our forecasts as well, which could adversely affect our results of operations, disappoint analysts and investors, or cause our stock price to decline. Furthermore, a decrease in orders in a given period could negatively affect our revenues in future periods. The COVID-19 pandemic may also have the effect of heightening many of the other risks described in the “Risk Factors” section of our December 31, 2020 Annual Report on Form 10-K filed March 25, 2021, including risks associated with our customers and supply chain. We may take further actions that alter our operations as may be required by federal, state, or local authorities, or which we determine are in our best interests. While much of our operations can be performed remotely, certain activities often require personnel to be on-site, and our ability to carry out these activities have been, and may continue to be negatively impacted if our employees or local personnel are not able to travel. In addition, for activities that may be conducted remotely, there is no guarantee that we will be as effective while working remotely because our team is dispersed and many employees and their families have been negatively affected, mentally or physically, by the COVID-19 pandemic. Decreased effectiveness and availability of our team could harm our business. In addition, we may decide to postpone or cancel planned investments in our business in response to changes in our business as a result of the spread of COVID-19, which may impact our ability to attract and retain customers and our rate of innovation, either of which could harm our business. We do not yet know the full extent of potential delays or impacts on our business, operations, or the global economy as a whole. While there have recently been vaccines developed and administered, and certain government orders and restrictions in particular cities, counties, and states have been lifted as the spread of COVID-19 starts to get contained and mitigated, we cannot predict the timing of the vaccine roll-out globally or the efficacy of such vaccines, and we do not yet know how businesses, customers, contractors, suppliers, or our partners will operate in a post COVID-19 environment, especially if additional or supplemental governmental orders, limitations, and restrictions are reinstated. There may be additional costs or impacts to our business and operations, including when we are able to resume in-person activities, travel, and events. In addition, there is no guarantee that a future outbreak of this or any other widespread epidemics will not occur, or that the global economy will recover, either of which could harm our business . Although the Company’s revenue growth during the prior year slowed due to the effects of COVID-19, the Company was able to mitigate the effects, to some degree, of the reduced revenue attributable to the economic impact of COVID-19 as a result of implementing a reduction in force and strict cost containment measures. Management’s plans with respect to the above is to continue its efforts towards responding to the changing economic landscape attributable to COVID-19, to continue to reduce costs, conserve cash, strengthen margins, and improve company-wide execution. Specific actions already implemented by management include a reduction in force, a limited freeze on hiring, reduced work week, minimizing overtime, travel and entertainment, and contractor costs. On April 7, 2020, the Company implemented a cost reduction plan which included the termination of certain employees and elimination of certain costs. Savings from this effort are estimated to be $2.5 million on an annual basis. While management expects these actions to result in prospective cost reductions, management is also committed to conserve cash, securing debt and/or equity financing to ensure that liquidity will be sufficient to meet the Company’s cash requirements through at least a period of the next twelve months. Management believes potential sources of liquidity include at least the following: ▪ In May 2019, the Company filed a Form S-3 prospectus with the Securities and Exchange Commission which became effective on June 19, 2019, and allows the Company to offer up to $100,000,000 aggregate dollar amount of shares of its common stock, preferred stock, debt securities, warrants to purchase its 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, in any combination, together or separately, in one or more offerings, in amounts, at prices and on the terms that the Company will determine at the time of the offering and which will be set forth in a prospectus supplement and any related free writing prospectus. ▪ On April 24, 2020, the Company completed a $6.0 million debt financing on a non-interest bearing convertible note with a 10% original issue discount. The first tranche of $3.0 million was received on April 27, 2020, with an additional $3.0 million available beginning seven months from the date of closing at the option of the Company conditioned upon meeting certain requirements which have been satisfied. This right expired in April 2021. The note is repayable in twenty-two installments beginning three months after closing in cash or shares of the Company’s common stock. ▪ On March 1, 2021, the Company entered into a Securities Purchase Agreement with an accredited investor, pursuant to which the Company agreed to issue and sell, in a registered direct offering, 1,497,006 shares of the Company’s common stock, par value $0.0001 per share, to the purchaser at an offering price of $6.68 per share. The registered offering was conducted pursuant to the Company’s effective shelf registration statement on Form S-3 (Registration No. 333-231513), which was initially filed with the Securities and Exchange Commission on May 15, 2019; and was declared effective on June 19, 2019. As compensation for their services, the Company paid to the placement agents a fee equal to 7% of the gross proceeds received by the Company as a result of the registered offering, and reimbursed the placement agents for certain expenses incurred in connection with such offering. The net proceeds from the registered offering are approximately $9.2 million after deducting certain fees due to the placement agents’ and the Company’s transaction expenses. The net proceeds received by the Company will be used for general corporate and working capital purposes. As a result of management’s cost reduction plans, the Company’s sources of liquidity and management’s most recent cash flow forecasts, management believes that the Company has sufficient liquidity to satisfy its anticipated cash requirements for at least the next twelve months. However, there can be no assurance that management’s cost reduction efforts will be effective, the forecasted cash flows will be achieved, or that external sources of financing, including the issuance of debt and/or equity securities, will be available at times and on terms acceptable to the Company, or at all.
Basis of Presentation	Basis of Presentation The accompanying consolidated financial statements have been prepared on an accrual basis of accounting in accordance with United States Generally Accepted Accounting Principles (“U.S. GAAP”), as set forth in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”). The unaudited consolidated financial statements herein have been prepared by the Company pursuant to the rules and regulations of the United States Securities Exchange Commission (“SEC”). The accompanying interim unaudited consolidated financial statements have been prepared under the presumption that users of the interim financial information have either read or have access to the audited consolidated financial statements for the latest year ended December 31, 2020. Accordingly, note disclosures which would substantially duplicate the disclosures contained in the December 31, 2020, audited consolidated financial statements have been omitted from these interim unaudited consolidated financial statements. The Company evaluated all subsequent events and transactions through the date of filing this report. In the opinion of management, all adjustments considered necessary for a fair presentation have been included in the accompanying condensed financial statements. Operating results for the three and six months ended June 30, 2021, are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. For further information, refer to the audited consolidated financial statements and notes for the year ended December 31, 2020, included in the Company’s Annual Report on Form 10-K filed with the SEC on March 25, 2021.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements include the accounts of OSS, which include the acquisition of Concept Development Inc., its wholly owned subsidiary, OSS GmbH, which also includes the acquisition of Bressner Technology GmbH. Intercompany balances and transactions have been eliminated in consolidation.
Short-term Investments	Short-term Investments Short-term investments consist predominantly of commercial paper, corporate debt securities, U.S. Treasury securities, and asset-backed securities. The Company classifies short-term investments based on the facts and circumstances surrounding the investments at the time of purchase and evaluates such classification as of each balance sheet date. On June 30, 2021, all short-term investments were classified as available-for-sale. Unrealized gains and losses for available-for-sale securities are included in accumulated other comprehensive income—a component of stockholders’ equity. Realized gains and losses are determined using the specific identification method and are included in other income (expense) in the consolidated statement of operations. The Company evaluates its investments to determine whether those with unrealized loss positions are other than temporarily impaired. Impairments are considered to be other than temporary if they are related to deterioration in credit risk or if it is likely that the Company will sell the securities before recovery of their cost basis.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent liabilities at the date of the condensed consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Actual results could differ from these estimates and assumptions. On an ongoing basis, our management evaluates these estimates and assumptions, including those related to determination of standalone selling prices of our products and services, allowance for doubtful account and sales reserves, income tax valuations, stock-based compensation, goodwill, intangible assets and inventory valuations and recoverability. We base our estimates on historical data and experience, as well as various other factors that our management believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities. As of June 30, 2021, we had $3,485,709 in net deferred tax assets (DTAs). These DTAs include approximately $5.3 million related to net operating loss carryforwards that can be used to offset taxable income in future periods and reduce our income taxes payable in those future periods. At this time, we consider it more likely than not that we will have sufficient taxable income in the future that will allow us to realize these DTAs. However, it is possible that economic conditions may On March 11, 2021, Congress passed, and the President signed into law, the American Rescue Plan Act, 2021 (the “ARP”), which includes certain business tax provisions. At this point we do not believe that these changes will have a material impact on our income tax provision for 2021. We will continue to evaluate the impact of new legislation on our financial position, results of operations, and cash flows. Due to the COVID-19 pandemic, there has been uncertainty and disruption in the global economy and financial markets. We are not aware of any specific event or circumstance that would require an update to our estimates or assumptions or a revision of the carrying value of our assets or liabilities as of the date of this Quarterly Report on Form 10-Q. These estimates and assumptions may change as new events occur and additional information is obtained. As a result, actual results could differ materially from these estimates and assumptions.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the FASB issued ASU No. 2016-02, Leases In June 2016, the FASB issued ASU 2016-13, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.
Recently Implemented Accounting Pronouncements	Recently Implemented Accounting Pronouncements In September 2018, the FASB issued ASU No. 2018-07, Stock-based Compensation: Improvements to Nonemployee Share-based Payment Accounting t materially impact the Company’s consolidated financial statements In July 2017, the FASB issued Accounting Standards Update No. 2017-11, Accounting for financial instruments with down rounds features (i) , and the existence of s often result in an accounting conclusion that the evaluated feature or instrument is i was adopted early by the Company on April 1, 2020 ’s April 2020 convertible note payable described in Note 8 possesses In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes

Short-Term Investments (Tables)

Short-Term Investments (Tables)	6 Months Ended
	Jun. 30, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Short-Term Investments by Significant Investment Category	The Company’s short-term investments by significant investment category as of June 30, 2021, are as follows: Description Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Accrued Interest Estimated Fair Value Level 1: (1) Cash alternatives $ 734,556 $ - $ - $ - $ 734,556 Certificates of deposit 593,602 - 16 1,129 594,715 Corporate bonds and notes 4,854,610 - 465 47,311 4,901,456 Municipal Securities 8,264,729 1,082 - 27,711 8,293,522 $ 14,447,497 $ 1,082 $ 481 $ 76,151 $ 14,524,249 (1) Level 1 fair value estimates are based on quoted prices in active markets for identical assets or liabilities.

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jun. 30, 2021
Accounts Receivable Net Current [Abstract]
Schedule of Accounts Receivable, Net	Accounts receivable, net consists of the following: June 30, December 31, 2021 2020 Accounts receivable $ 6,554,902 $ 7,491,397 Unbilled receivables 4 106 6,554,906 7,491,503 Less: allowance for doubtful accounts (27,797 ) (33,120 ) $ 6,527,109 $ 7,458,383

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2021
Inventory Disclosure [Abstract]
Summary of Inventories, Net	Inventories, net consist of the following: June 30, December 31, 2021 2020 Raw materials $ 4,563,989 $ 5,210,327 Sub-assemblies 323,493 255,699 Work-in-process 473,027 407,328 Finished goods 7,663,042 4,424,603 13,023,551 10,297,957 Less: reserves for obsolete and slow-moving inventories (612,061 ) (650,453 ) $ 12,411,490 $ 9,647,504

Long-Lived Intangible Assets (T

Long-Lived Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Schedule of Definite Lived Intangible Assets	Definite lived intangible assets related to acquisition are as follows, as of June 30, 2021: Expected Life Remaining Months Gross Intangible Assets Accumulated Amortization Net Intangible Assets Customer lists and relationships 36 to 60 months 4 to 26 months $ 2,084,515 $ (1,812,427 ) $ 272,088 Drawings and technology 36 months 0 months 760,207 (760,207 ) - Trade name, trademarks & other 24 to 36 months 4 months 447,274 (410,661 ) 36,613 Non-compete 36 months 4 months 246,797 (221,042 ) 25,755 $ 3,538,793 $ (3,204,337 ) $ 334,456 Definite lived intangibles assets related to acquisitions are as follows, as of December 31, 2020: Expected Life Remaining Months Gross Intangible Assets Accumulated Amortization Net Intangible Assets Customer lists and relationships 36 to 60 months 10 to 32 months $ 2,084,515 $ (1,578,178 ) $ 506,337 Drawings and technology 36 months 0 months 760,207 (760,207 ) - Trade name, trademarks & other 24 to 36 months 10 months 447,274 (355,742 ) 91,532 Non-compete 36 months 10 months 246,797 (182,409 ) 64,388 $ 3,538,793 $ (2,876,536 ) $ 662,257
Schedule of Amortization Expense of Definite Lived Intangible Assets	As of June 30, 2021, amortization expense of the definite lived intangible assets for the years remaining is as follows: 2021 2022 2023 Total $ 229,071 $ 63,231 $ 42,154 $ 334,456

Accrued Expenses and Other Li_2

Accrued Expenses and Other Liabilities (Tables)	6 Months Ended
	Jun. 30, 2021
Accrued Liabilities And Other Liabilities [Abstract]
Schedule of Accrued Expenses and Other Liabilities	Accrued expenses and other liabilities consist of the following: June 30, December 31, 2021 2020 Accrued compensation and related liabilities $ 984,322 $ 932,988 Deferred revenue and customer deposits 885,356 1,096,672 Warranty reserve 468,542 425,636 Deferred rent 272,870 312,909 Other accrued expenses 425,703 713,239 $ 3,036,793 $ 3,481,444

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2021
Debt Disclosure [Abstract]
Summary of Outstanding Debt Obligations	A summary of outstanding debt obligations as of June 30, 2021, is as follows: Loan Description Current Interest Rate Maturity Date Balance (Euro) Balance ($) Current Portion Long-term Portion Domestic: Notes payable - third party 9.50% April-21 € - $ - $ - $ - Related party notes payable 9.50% April-21 - - - - Convertible senior secured note 10% OID April-22 - 2,590,909 2,590,909 - PPP loan 1.00% April-22 - - € - $ 2,590,909 $ 2,590,909 $ - Foreign: Uni Credit Bank AG 1.60% September-21 € 500,000 $ 592,571 $ 592,571 $ - Uni Credit Bank AG 1.55% November-21 500,000 592,572 592,572 Uni Credit Bank AG 1.55% December-21 500,000 592,572 592,572 - € 1,500,000 $ 1,777,715 $ 1,777,715 $ - $ 4,368,624 $ 4,368,624 $ - Outstanding debt obligations as of June 30, 2021, consist of the following: Period Ended June 30, 2021 Related Parties Third Parties Convertible Note PPP Loan Foreign Total Current portion: Principal $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 Less discount (36,246 ) - - (36,246 ) Less loan origination costs - - (38,212 ) - - (38,212 ) Net liability $ - $ - $ 2,516,451 $ - $ 1,777,715 $ 4,294,166 Long-term portion: Principal $ - $ - $ - $ - $ - $ - Less discount - - - - - - Less loan origination costs - - - - - - Net liability $ - $ - $ - $ - $ - $ - Total: Principal $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 Less discount - - (36,246 ) - - (36,246 ) Less loan origination costs - - (38,212 ) - - (38,212 ) Net liability $ - $ - $ 2,516,451 $ - $ 1,777,715 $ 4,294,166
Schedule of Total Future Payments under Notes Payable and Related Party Notes Payable	Total future principal payments under notes payable and related party notes payable as of June 30, 2021, are as follows: Period Ending June 30, Related Parties Third Parties Convertible Note PPP Loan Foreign Total Discount / Loan Original Costs 2022 $ - $ - $ 2,590,909 $ - $ 1,777,715 $ 4,368,624 $ (74,458 ) Total minimum payments - - 2,590,909 - 1,777,715 4,368,624 (74,458 ) Current portion of notes payable - - (2,590,909 ) - (1,777,715 ) (4,368,624 ) 74,458 Notes payable, net of current portion $ - $ - $ - $ - $ - $ - $ -

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2021
Stockholders Equity Note [Abstract]
Summary of Stock Option Activity	A summary of stock option activity under each of the Company’s stock option plans during the six months ended June 30, 2021, is as follows: Stock Options Outstanding Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (in years) Aggregate Intrinsic Value Outstanding on January 1, 2021 1,320,267 $ 1.81 6.18 $ 5,248,333 Granted - $ - - $ - Forfeited / Canceled (13,772 ) $ 2.89 6.63 $ 39,276 Exercised (210,188 ) $ 1.13 3.10 $ 981,085 Outstanding on June 30, 2021 1,096,307 $ 1.93 6.47 $ 4,227,972 Exercisable as of June 30, 2021 1,082,597 $ 1.93 6.46 $ 4,182,562 Vested and expected to vest as of June 30, 2021 1,095,896 $ 1.93 6.47 $ 4,226,609
Schedule of Assumption to Calculate Weighted Average Grant Date Fair Value of Options Grant	The following table presents details of the assumptions used to calculate the weighted-average grant date fair value of common stock options granted by the Company. There were no options granted during the six month period ended June 30, 2021: For the Six Months Ended June 30, 2021 2020 Expected term (in years) - 5.00 - 5.86 Expected volatility 0.00 % 43.50 % Risk-free interest rate 0.00 % 0.33% -1.41% Weighted average grant date fair value per share $ - $ 0.083 Grant date fair value of options vested $ 4,182,562 $ 529,471 Intrinsic value of options exercised $ 43,473 $ 813,148
Schedule of Restricted Stock Unit Activity	The Company’s restricted stock unit activity for the six months ended June 30, 2021, is as follows: Restricted Stock Units Number of Shares Weighted Average Grant Date Fair Value Unvested on January 1, 2021 575,922 $ 2.65 Granted 416,946 $ 5.77 Vested (133,380 ) $ 3.33 Canceled (3,125 ) $ 5.77 Unvested on June 30, 2021 856,363 $ 4.05
Summary of Stock-Based Compensation Expense	Stock-based compensation expense for the three and six month periods ended June 30, 2021 and 2020, was comprised of the following: For the Three Months Ended June 30, For the Six Months Ended June 30, Stock-based compensation classified as: 2021 2020 2021 2020 General and administrative $ 215,825 $ 42,351 $ 616,825 $ 202,031 Production 78,657 17,769 93,316 35,738 Marketing and selling 114,319 17,074 129,716 34,366 Research and development 56,535 8,184 63,873 21,004 $ 465,336 $ 85,378 $ 903,730 $ 293,139
Schedule of Warrant Activity	The following table summarizes the Company’s warrant activity during the six months ended June 30, 2021: Number of Warrants Weighted Average Exercise Price Warrants outstanding – January 1, 2021 505,946 $ 5.00 Warrants granted - $ - Warrants exercised (35,067 ) $ 1.85 Warrants outstanding – June 30, 2021 470,879 $ 5.23

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	6 Months Ended
	Jun. 30, 2021
Earnings Per Share [Abstract]
Summary of Basic and Diluted Net Income (Loss) Per Share	Basic and diluted net income (loss) per share was calculated as follows for the three and six month periods ended June 30, 2021 and 2020: For the Three Months Ended June 30, For the Six Months Ended June 30, 2021 2020 2021 2020 Basic and diluted net income (loss) per share: Numerator: Net income (loss) $ 1,697,122 $ (12,162 ) $ 1,738,320 $ (1,108,194 ) Denominator: Weighted average common shares outstanding - basic 18,513,620 16,488,325 17,934,022 16,410,660 Effect of dilutive securities 1,221,763 - 1,371,820 - Weighted average common shares outstanding - diluted 19,735,383 16,488,325 19,305,842 16,410,660 Net income (loss) per common share: Basic $ 0.09 $ (0.00 ) $ 0.10 $ (0.07 ) Diluted $ 0.09 $ (0.00 ) $ 0.09 $ (0.07 )

Revenue, Segment and Geograph_2

Revenue, Segment and Geographic Information (Tables)	6 Months Ended
	Jun. 30, 2021
Segment Reporting [Abstract]
Schedule of (Loss) Income from Operations by Reporting Segments	Segment detail for the three and six month periods ended June 30, 2021 and 2020, is as follows: For the Three Months Ended June 30, 2021 For the Three Months Ended June 30, 2020 OSS Bressner Total OSS Bressner Total Revenues $ 9,102,435 $ 5,802,574 $ 14,905,009 $ 7,305,302 $ 4,320,025 $ 11,625,327 Cost of revenues (5,762,867 ) (4,489,398 ) (10,252,265 ) (4,802,177 ) (3,497,955 ) (8,300,132 ) Gross profit 3,339,568 1,313,176 4,652,744 2,503,125 822,070 3,325,195 Gross margin % 36.7 % 22.6 % 31.2 % 34.3 % 19.0 % 28.6 % Total operating expenses (3,172,432 ) (963,662 ) (4,136,094 ) (2,844,838 ) (886,243 ) (3,731,081 ) Income (loss) from operations $ 167,136 $ 349,514 $ 516,650 $ (341,713 ) $ (64,173 ) $ (405,886 ) For the Six Months Ended June 30, 2021 For the Six Months Ended June 30, 2020 OSS Bressner Total OSS Bressner Total Revenues $ 17,704,406 $ 10,516,355 $ 28,220,761 $ 15,745,525 $ 9,239,439 $ 24,984,964 Cost of revenues (11,104,229 ) (8,031,004 ) (19,135,233 ) (10,923,086 ) (7,340,996 ) (18,264,082 ) Gross profit 6,600,177 2,485,351 9,085,528 4,822,439 1,898,443 6,720,882 Gross profit % 37.3 % 23.6 % 32.2 % 30.6 % 20.5 % 26.9 % Total operating expenses (6,424,217 ) (1,869,630 ) (8,293,847 ) (6,831,047 ) (1,806,875 ) (8,637,922 ) Income (loss) from operations $ 175,960 $ 615,721 $ 791,681 $ (2,008,608 ) $ 91,568 $ (1,917,040 )

The Company and Basis of Pres_2

The Company and Basis of Presentation - Additional Information (Details)

Mar. 03, 2021USD ($)

Mar. 01, 2021USD ($)$ / sharesshares

Apr. 27, 2020USD ($)Installment

Apr. 24, 2020USD ($)

Apr. 07, 2020USD ($)

Apr. 30, 2017USD ($)

Jul. 31, 2019USD ($)shares

Mar. 31, 2019USD ($)

Feb. 28, 2018USD ($)

Jun. 30, 2021USD ($)$ / sharesshares

Jun. 30, 2020USD ($)

Jun. 30, 2021USD ($)$ / sharesshares

Jun. 30, 2020USD ($)

Dec. 31, 2020USD ($)$ / sharesshares

Jun. 18, 2021EUR (€)

Jun. 04, 2021EUR (€)

Apr. 09, 2021EUR (€)

Jun. 25, 2020EUR (€)

Apr. 28, 2020USD ($)

Apr. 09, 2020EUR (€)

Jun. 19, 2019USD ($)

Oct. 31, 2018

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Net proceeds from issuance of initial public offering

$ 16,100,000

Proceeds from notes payable

$ 1,807,818

Common stock, shares issued | shares

1,554,546

18,538,689

18,538,689

16,684,424

Proceeds from issuance of common stock

$ 2,488,148

$ 10,000,000

Funding amount

$ 4,368,624

4,368,624

Cash and cash equivalents

3,975,069

3,975,069

$ 6,316,921

Working capital

26,954,277

26,954,277

Operating income (loss)

$ 516,650

$ (405,886)

791,681

$ (1,917,040)

(424,281)

Cash generated by (used in) operating activities

$ 2,788,363

$ (2,935,059)

$ (250,173)

Non-interest bearing convertible note

$ 6,000,000

Original issue discount rate

10.00%

Common stock, par value | $ / shares

$ 0.0001

$ 0.0001

$ 0.0001

Tranche One

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Non-interest bearing convertible note

$ 3,000,000

Debt maturity term

3 months

Tranche Two

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Non-interest bearing convertible note

$ 3,000,000

Debt maturity term

7 months

Non-interest bearing convertible note, expiration date

2021-04

Number of note repayable installments | Installment

22

Direct Offering

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Estimated proceeds from Issuance of common stock after commissions and offering costs

$ 9,188,673

$ 9,200,000

Proceeds from issuance of stock, net of issuance costs, Shares | shares

1,497,006

Sale of stock, price per share | $ / shares

$ 6.68

Common stock, par value | $ / shares

$ 0.0001

Percentage of placement agents fee

7.00%

Follow-on Public Offering

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Aggregate of common stock preferred stock debt securities and warrants securities

$ 100,000,000

Members of Board of Directors and Others

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Proceeds from notes payable

$ 1,500,000

Management

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Estimated savings from cost reduction plan

$ 2,500,000

Senior Secured Convertible Promissory Notes

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Debt instrument, face amount

$ 3,000,000

Debt instrument, interest rate

10.00%

Paycheck Protection Program

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Funding amount

$ 1,500,000

Bressner Technology

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Percentage of shares acquired

100.00%

Bressner Technology GmbH

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Debt instrument, face amount | €

€ 500,000

€ 500,000

€ 500,000

€ 500,000

€ 500,000

Cash and cash equivalents

$ 1,345,037

$ 1,345,037

SkyScale, LLC

Organization Consolidation And Presentation Of Financial Statements [Line Items]

Member contribution to joint venture

$ 750,000

Interest received in joint venture

50.00%

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Significant Accounting Policies [Line Items]
Deferred tax assets, net	$ 3,485,709			$ 3,485,709
Operating loss carryforwards	5,300,000			5,300,000
Additional interim tax benefit	$ 235,293		$ (441,511)	$ 295,815	$ (908,809)
ASU 2018-07
Significant Accounting Policies [Line Items]
Change in accounting principle, ASU, adopted	true			true
Change in accounting principle, accounting standards update, immaterial effect	true			true
ASU 2017-11
Significant Accounting Policies [Line Items]
Change in accounting principle, ASU, adopted						true
Change in accounting principle, ASU, adoption date						Apr. 1, 2020
Change in accounting principle, ASU, early adopted						true
ASU 2019-12
Significant Accounting Policies [Line Items]
Change in accounting principle, ASU, adopted						true
Change in accounting principle, ASU, adoption date						Jul. 1, 2020
Change in accounting principle, ASU, early adopted						true
Additional interim tax benefit		$ 446,099

Short-Term Investments - Summar

Short-Term Investments - Summary of Short-Term Investments by Significant Investment Category (Details) - Level 1	Jun. 30, 2021USD ($)
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 14,447,497
Gross Unrealized Gains	1,082
Gross Unrealized Losses	481
Accrued Interest	76,151
Estimated Fair Value	14,524,249
Cash Alternatives
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	734,556
Estimated Fair Value	734,556
Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	593,602
Gross Unrealized Losses	16
Accrued Interest	1,129
Estimated Fair Value	594,715
Corporate Bonds and Notes
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	4,854,610
Gross Unrealized Losses	465
Accrued Interest	47,311
Estimated Fair Value	4,901,456
Municipal Securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	8,264,729
Gross Unrealized Gains	1,082
Accrued Interest	27,711
Estimated Fair Value	$ 8,293,522

Short-Term Investments - Additi

Short-Term Investments - Additional Information (Details)	6 Months Ended
	Jun. 30, 2021Issuer
Maximum
Schedule Of Available For Sale Securities [Line Items]
Number of issuer, investment policy limits the amount of credit exposure	1

Accounts Receivable - Schedule

Accounts Receivable - Schedule of Accounts Receivable, Net (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable gross	$ 6,554,906	$ 7,491,503
Less: allowance for doubtful accounts	(27,797)	(33,120)
Accounts receivable, total	6,527,109	7,458,383
Accounts Receivable
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable gross	6,554,902	7,491,397
Unbilled Receivables
Accounts Notes And Loans Receivable [Line Items]
Accounts receivable gross	$ 4	$ 106

Accounts Receivable - Additiona

Accounts Receivable - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accounts Receivable Net Current [Abstract]
(Recovery) provision for bad debt expense	$ 11,688	$ 994	$ (4,902)	$ (1,411)

Inventories - Summary of Invent

Inventories - Summary of Inventories, Net (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 4,563,989	$ 5,210,327
Sub-assemblies	323,493	255,699
Work-in-process	473,027	407,328
Finished goods	7,663,042	4,424,603
Inventory gross	13,023,551	10,297,957
Less: reserves for obsolete and slow-moving inventories	(612,061)	(650,453)
Inventory net	$ 12,411,490	$ 9,647,504

Long-Lived Intangible Assets -

Long-Lived Intangible Assets - Schedule of Definite Lived Intangible Assets (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Gross	$ 3,538,793	$ 3,538,793
Definite lived intangible assets, Accumulated Amortization	(3,204,337)	(2,876,536)
Definite lived intangible assets, Net	334,456	662,257
Customer Lists and Relationships
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Gross	2,084,515	2,084,515
Definite lived intangible assets, Accumulated Amortization	(1,812,427)	(1,578,178)
Definite lived intangible assets, Net	$ 272,088	$ 506,337
Customer Lists and Relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	36 months	36 months
Definite lived intangible assets, Remaining Months	4 months	10 months
Customer Lists and Relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	60 months	60 months
Definite lived intangible assets, Remaining Months	26 months	32 months
Drawings and Technology
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	36 months	36 months
Definite lived intangible assets, Remaining Months	0 months	0 months
Definite lived intangible assets, Gross	$ 760,207	$ 760,207
Definite lived intangible assets, Accumulated Amortization	$ (760,207)	$ (760,207)
Trade name, Trademarks & other
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Remaining Months	4 months	10 months
Definite lived intangible assets, Gross	$ 447,274	$ 447,274
Definite lived intangible assets, Accumulated Amortization	(410,661)	(355,742)
Definite lived intangible assets, Net	$ 36,613	$ 91,532
Trade name, Trademarks & other | Minimum
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	24 months	24 months
Trade name, Trademarks & other | Maximum
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	36 months	36 months
Non-Compete
Finite Lived Intangible Assets [Line Items]
Definite lived intangible assets, Expected Life	36 months	36 months
Definite lived intangible assets, Remaining Months	4 months	10 months
Definite lived intangible assets, Gross	$ 246,797	$ 246,797
Definite lived intangible assets, Accumulated Amortization	(221,042)	(182,409)
Definite lived intangible assets, Net	$ 25,755	$ 64,388

Long-Lived Intangible Assets _2

Long-Lived Intangible Assets - Schedule of Amortization Expense of Definite Lived Intangible Assets (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 229,071
2022	63,231
2023	42,154
Definite lived intangible assets, Net	$ 334,456	$ 662,257

Long-Lived Intangible Assets _3

Long-Lived Intangible Assets - Additional Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense	$ 163,901	$ 174,525	$ 327,801	$ 349,051

Accrued Expenses and Other Li_3

Accrued Expenses and Other Liabilities - Schedule of Accrued Expenses and Other Liabilities (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities And Other Liabilities [Abstract]
Accrued compensation and related liabilities	$ 984,322	$ 932,988
Deferred revenue and customer deposits	885,356	1,096,672
Warranty reserve	468,542	425,636
Deferred rent	272,870	312,909
Other accrued expenses	425,703	713,239
Accrued expenses and other liabilities	$ 3,036,793	$ 3,481,444

Debt - Additional Information (

Debt - Additional Information (Details)

Jun. 18, 2021EUR (€)

Jun. 04, 2021EUR (€)

Apr. 09, 2021EUR (€)

Jul. 01, 2020

Jun. 25, 2020EUR (€)

Jun. 05, 2020

May 11, 2020USD ($)

Apr. 24, 2020USD ($)$ / shares

Apr. 20, 2020USD ($)$ / shares

Apr. 09, 2020EUR (€)

Apr. 01, 2019USD ($)

Apr. 01, 2019EUR (€)

Sep. 30, 2019USD ($)

Apr. 30, 2019USD ($)Individual$ / sharesshares

Sep. 30, 2017USD ($)

Jun. 30, 2021USD ($)LineofCreditTermLoan$ / shares

Mar. 31, 2021USD ($)

Jun. 30, 2020USD ($)

Jun. 30, 2021USD ($)LineofCreditTermLoan$ / shares

Jun. 30, 2020USD ($)

Jun. 30, 2021EUR (€)LineofCreditTermLoan

May 03, 2021USD ($)

Dec. 31, 2020USD ($)$ / shares

Dec. 31, 2020EUR (€)

Sep. 30, 2019EUR (€)

Apr. 01, 2019EUR (€)

Sep. 30, 2017EUR (€)

Debt Instrument [Line Items]

Total balance outstanding

$ 4,368,624

$ 4,368,624

Proceeds from loan

$ 1,807,818

Non-interest bearing convertible note

$ 6,000,000

Common stock, par value | $ / shares

$ 0.0001

$ 0.0001

$ 0.0001

Original issue discount rate

10.00%

Debt discount amortization

$ 109,305

$ 115,990

April 2019 Notes

Debt Instrument [Line Items]

Total balance outstanding

$ 0

0

$ 63,188

Debt instrument, face amount

$ 350,000

Debt instrument, interest rate

9.50%

Debt instrument, monthly / quarterly principal and interest payments

$ 16,100

Number of individuals | Individual

3

Debt maturity term

2 years

Warrants to purchase common stock percentage equal to original principal

10.00%

Warrants exercise price | $ / shares

$ 2.15

Warrants to purchase common stock | shares

16,276

Estimated fair value of each warrants | $ / shares

$ 0.90

April 2019 Notes | Warrants

Debt Instrument [Line Items]

Fair value of the warrant issued

$ 14,037

April 2019 Notes | Warrants | Exercise Price

Debt Instrument [Line Items]

Warrants exercise price | $ / shares

$ 2.15

April 2019 Notes | Warrants | Contractual Term

Debt Instrument [Line Items]

Fair value assumptions

5 years

April 2019 Notes | Warrants | Volatility Rate

Debt Instrument [Line Items]

Fair value assumptions

0.4460

April 2019 Notes | Warrants | Dividend Rate

Debt Instrument [Line Items]

Fair value assumptions

0

April 2019 Notes | Warrants | Risk-free Interest Rate

Debt Instrument [Line Items]

Fair value assumptions

0.02307

April 2019 Related Party Notes | Board of Directors

Debt Instrument [Line Items]

Total balance outstanding

$ 0

$ 0

206,669

Debt instrument, face amount

$ 1,150,000

Debt instrument, interest rate

9.50%

Debt instrument, monthly / quarterly principal and interest payments

$ 52,900

Number of individuals | Individual

3

Debt maturity term

2 years

Warrants to purchase common stock percentage equal to original principal

10.00%

Warrants exercise price | $ / shares

$ 2.15

Warrants to purchase common stock | shares

53,490

Estimated fair value of each warrants | $ / shares

$ 0.90

April 2019 Related Party Notes | Warrants

Debt Instrument [Line Items]

Fair value of the warrant issued

$ 46,121

April 2019 Related Party Notes | Warrants | Exercise Price

Debt Instrument [Line Items]

Warrants exercise price | $ / shares

$ 2.15

April 2019 Related Party Notes | Warrants | Contractual Term

Debt Instrument [Line Items]

Fair value assumptions

5 years

April 2019 Related Party Notes | Warrants | Volatility Rate

Debt Instrument [Line Items]

Fair value assumptions

0.4260

April 2019 Related Party Notes | Warrants | Dividend Rate

Debt Instrument [Line Items]

Fair value assumptions

0

April 2019 Related Party Notes | Warrants | Risk-free Interest Rate

Debt Instrument [Line Items]

Fair value assumptions

0.023067

PPP Loan

Debt Instrument [Line Items]

Debt instrument, interest rate

1.00%

1.00%

1.00%

Debt instrument, maturity date

Apr. 30, 2022

Proceeds from loan

$ 1,499,360

Loan forgiveness period

168 days

56 days

Percentage of payroll requirement

60.00%

Percentage of funds spend on other eligible expenses

40.00%

Debt instrument maturity period

2 years

Existing loans original term

2 years

Renegotiated term under payback Protection Program Flexibility Act

5 years

Loan fully forgiven

$ 1,499,360

Accrued interest fully forgiven

$ 14,994

PPP Loan | Minimum

Debt Instrument [Line Items]

Payroll costs exclude compensation of individual employee

$ 100,000

Percentage of reduction in salaries and wages for employees

25.00%

Debt instrument maturity period

5 years

PPP Loan | Maximum

Debt Instrument [Line Items]

Percentage of forgiven amount for non-payroll costs

25.00%

Salaries and wages for employees

$ 100,000

PPP Loan | Two Year Promissory Note

Debt Instrument [Line Items]

Debt instrument, interest rate

1.00%

Debt instrument, maturity date

Apr. 28, 2022

Senior Secured Convertible Promissory Notes

Debt Instrument [Line Items]

Debt instrument, face amount

$ 3,000,000

Debt instrument, interest rate

10.00%

Senior Secured Convertible Promissory Notes | Securities Purchase Agreement

Debt Instrument [Line Items]

Debt instrument, interest rate

0.00%

Debt instrument, maturity date

Apr. 1, 2022

Non-interest bearing convertible note

$ 3,000,000

$ 6,000,000

$ 3,000,000

Common stock, par value | $ / shares

$ 0.0001

Debt instrument, initial conversion price per share | $ / shares

$ 2.50

$ 2.50

Original issue discount rate

10.00%

10.00%

Debt instrument, aggregate purchase price

$ 2,700,000

Debt instrument, conversion price percentage, eligibility of conversion

135.00%

Monthly amortization payments percentage of initial principal

0.04545%

Debt instrument, redemption price percentage

105.00%

110.00%

Debt instrument, conversion description

Subject to the satisfaction of certain equity conditions set forth in the notes, installment amounts may be satisfied in shares of our common stock, with such installment conversion at a conversion price equal to the lower of (i) the conversion price then in effect; and (ii) the greater of (x) the floor price of $1.00 (80% of the Nasdaq market price at date of purchase agreement) and (y) the lower of (I) 82.5% the volume weighted average price of our common stock on the trading day immediately before the applicable installment date and (II) 82.5% of the quotient of (A) the sum of the volume weighted average price of our common stock for each of the three (3) trading days with the lowest volume weighted average price of our common stock during the twenty (20) consecutive trading day period ending and including the trading day immediately prior to the applicable installment date, divided by (B) three (3).

Percentage of market price

80.00%

Volume weighted average price of common stock period

3 days

Volume weighted average price period

20 days

Number of trading days, shares pre-delivered

2 days

Debt discount amortization

$ 44,431

$ 49,141

$ 95,359

49,141

Original issue discount rate

$ 316,274

Debt issuance costs amortized

46,842

51,806

100,532

51,806

Debt discount amortization

$ 1,254

$ 7,520

$ 8,773

$ 15,040

Senior Secured Convertible Promissory Notes | Minimum | Securities Purchase Agreement

Debt Instrument [Line Items]

Debt conversion floor price | $ / shares

$ 1

Volume weighted average price percentage

82.50%

Senior Secured Convertible Promissory Notes | Maximum | Securities Purchase Agreement

Debt Instrument [Line Items]

Volume weighted average price percentage

82.50%

Bressner Technology GmbH

Debt Instrument [Line Items]

Number of term loans outstanding | TermLoan

3

3

3

Debt instrument, face amount | €

€ 500,000

€ 500,000

€ 500,000

€ 500,000

€ 500,000

Bressner Technology GmbH | Term Loans

Debt Instrument [Line Items]

Total balance outstanding

$ 1,777,715

$ 1,777,715

€ 1,500,000

Bressner Technology GmbH | Note Payable Maturing on March 30, 2021

Debt Instrument [Line Items]

Total balance outstanding

81,251

€ 66,446

Debt instrument, face amount

$ 586,189

€ 500,000

Debt instrument, interest rate

2.25%

2.25%

Debt instrument, maturity date

Mar. 30, 2021

Mar. 30, 2021

Debt instrument, monthly / quarterly principal and interest payments

$ 24,960

€ 22,232

Bressner Technology GmbH | Note Payable Maturing on March 24, 2020

Debt Instrument [Line Items]

Debt instrument, face amount

$ 336,810

€ 300,000

Debt instrument, interest rate

1.65%

1.65%

Debt instrument, maturity date

Mar. 24, 2020

Bressner Technology GmbH | Note Payable Maturing on January 31, 2020

Debt Instrument [Line Items]

Debt instrument, face amount

$ 436,272

€ 400,000

Debt instrument, interest rate

2.125%

2.125%

Debt instrument, maturity date

Jan. 31, 2020

Term Loans | Bressner Technology GmbH

Debt Instrument [Line Items]

Total balance outstanding

$ 592,572

$ 592,572

€ 500,000

611,406

€ 500,000

Debt instrument, interest rate

1.55%

1.55%

1.60%

1.87%

1.90%

Debt instrument, maturity date

Dec. 17, 2021

Nov. 30, 2021

Sep. 30, 2021

Jun. 18, 2021

Apr. 9, 2021

German Institutions | Revolving Credit Facility | Bressner Technology GmbH

Debt Instrument [Line Items]

Number of lines of credit | LineofCredit

3

3

3

Line of credit facility, maximum borrowing capacity

$ 3,199,886

$ 3,199,886

€ 2,700,000

Total outstanding balance

0

$ 0

$ 0

German Institutions | Revolving Credit Facility | Bressner Technology GmbH | Line of Credit Facility One

Debt Instrument [Line Items]

Line of credit current rate

3.10%

German Institutions | Revolving Credit Facility | Bressner Technology GmbH | Line of Credit Facility Two

Debt Instrument [Line Items]

Line of credit current rate

4.00%

Line of Credit from UniCredit Bank | Term Loans | Bressner Technology GmbH

Debt Instrument [Line Items]

Total balance outstanding

$ 592,571

$ 592,571

Debt - Summary of Outstanding D

Debt - Summary of Outstanding Debt Obligations (Details)	6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2021EUR (€)
Debt Instrument [Line Items]
Balance	$ 4,368,624
Current Portion	$ 4,368,624
PPP Loan
Debt Instrument [Line Items]
Current Interest Rate	1.00%	1.00%
Maturity Date	Apr. 30, 2022
Note Payable - Third Party
Debt Instrument [Line Items]
Current Interest Rate	9.50%	9.50%
Maturity Date	Apr. 30, 2021
Related Party Notes Payable
Debt Instrument [Line Items]
Current Interest Rate	9.50%	9.50%
Maturity Date	Apr. 30, 2021
Convertible Senior Secured Note
Debt Instrument [Line Items]
Current Interest Rate	10.00%	10.00%
Maturity Date	Apr. 30, 2022
Balance	$ 2,590,909
Current Portion	2,590,909
Domestic
Debt Instrument [Line Items]
Balance	2,590,909
Current Portion	2,590,909
Foreign
Debt Instrument [Line Items]
Balance	1,777,715	€ 1,500,000
Current Portion	$ 1,777,715
Foreign | Note Payable Maturing on September 30, 2021
Debt Instrument [Line Items]
Current Interest Rate	1.60%	1.60%
Maturity Date	Sep. 30, 2021
Balance	$ 592,571	€ 500,000
Current Portion	$ 592,571
Foreign | Note Payable Maturing on November 30, 2021
Debt Instrument [Line Items]
Current Interest Rate	1.55%	1.55%
Maturity Date	Nov. 30, 2021
Balance	$ 592,572	€ 500,000
Current Portion	$ 592,572
Foreign | Note Payable Maturing on December 31, 2021
Debt Instrument [Line Items]
Current Interest Rate	1.55%	1.55%
Maturity Date	Dec. 31, 2021
Balance	$ 592,572	€ 500,000
Current Portion	$ 592,572

Debt - Schedule of Outstanding

Debt - Schedule of Outstanding Debt Obligations (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Current portion, principal	$ 4,368,624
Current portion, less discount	(36,246)
Current portion, less loan origination costs	(38,212)
Current portion, net liability	4,294,166
Principal	4,368,624
Less discount	(36,246)
Less loan origination costs	(38,212)
Net liability	4,294,166
Related Parties
Debt Instrument [Line Items]
Current portion, less discount	0	$ (6,726)
Convertible Note
Debt Instrument [Line Items]
Current portion, principal	2,590,909
Current portion, less discount	(36,246)
Current portion, less loan origination costs	(38,212)
Current portion, net liability	2,516,451
Principal	2,590,909
Less discount	(36,246)
Less loan origination costs	(38,212)
Net liability	2,516,451
Foreign
Debt Instrument [Line Items]
Current portion, principal	1,777,715
Current portion, net liability	1,777,715
Principal	1,777,715
Net liability	$ 1,777,715

Debt - Schedule of Total Future

Debt - Schedule of Total Future Payments under Notes Payable and Related Party Notes Payable (Details)	Jun. 30, 2021USD ($)
Debt Instrument [Line Items]
2022	$ 4,368,624
Total minimum payments	4,368,624
Current portion of notes payable	(4,368,624)
2022	(74,458)
Total minimum payments	(74,458)
Current portion of notes payable	74,458
Convertible Note
Debt Instrument [Line Items]
2022	2,590,909
Total minimum payments	2,590,909
Current portion of notes payable	(2,590,909)
Foreign
Debt Instrument [Line Items]
2022	1,777,715
Total minimum payments	1,777,715
Current portion of notes payable	$ (1,777,715)

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details)	Jun. 24, 2020$ / sharesshares	Jun. 30, 2021USD ($)$ / sharesshares	Jun. 21, 2021$ / sharesshares	May 19, 2021shares	May 18, 2021shares	Dec. 31, 2020$ / sharesshares
Class Of Stock [Line Items]
Preferred stock, shares authorized		10,000,000
Common stock, shares authorized		50,000,000				50,000,000
Number of shares granted		0
Unvested common stock options, net of estimated forfeitures | $		$ 25,730
Unearned stock-based compensation expected to be recognized		2 months 12 days
Common stock, par value | $ / shares		$ 0.0001				$ 0.0001
2017 Equity Incentive Plan | Common Stock
Class Of Stock [Line Items]
Shares authorized				3,000,000	1,500,000
Employees, Officers, Directors, Consultants and Advisors
Class Of Stock [Line Items]
Common stock, par value | $ / shares			$ 0.0001
Employees, Officers, Directors, Consultants and Advisors | Common Stock
Class Of Stock [Line Items]
Common stock shares issuable			3,543,114
Restricted Stock Units
Class Of Stock [Line Items]
Number of shares, granted		416,946
Weighted average exercise price | $ / shares		$ 5.77
Unvested common stock options, net of estimated forfeitures | $		$ 2,645,821
Unearned stock-based compensation expected to be recognized		1 year 5 months 8 days
Restricted Stock Units | 2017 Equity Incentive Plan | Minimum
Class Of Stock [Line Items]
Vesting period		1 year
Restricted Stock Units | 2017 Equity Incentive Plan | Maximum
Class Of Stock [Line Items]
Vesting period		3 years
Restricted Stock Units | Mr. Raun
Class Of Stock [Line Items]
Number of shares, granted	412,125
Vesting period	3 years
Vesting percentage	33.33%
Incentive Stock Options
Class Of Stock [Line Items]
Share price | $ / shares		$ 5.50
Multiplier for calculating share vested on determined date		1,177.52
Incentive Stock Options | Mr. Raun
Class Of Stock [Line Items]
Number of shares granted	412,125
Weighted average exercise price | $ / shares	$ 2.14

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Stock Option Activity (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Granted	0
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding beginning balance	1,320,267
Number of Shares, Forfeited / Cancelled	(13,772)
Number of Shares, Exercised	(210,188)
Number of Shares, Outstanding ending balance	1,096,307	1,320,267
Number of Shares, Exercisable ending balance	1,082,597
Number of Shares, Vested and expected to vest ending balance	1,095,896
Weighted Average Exercise Price, Outstanding beginning balance	$ 1.81
Weighted Average Exercise Price, Forfeited / Cancelled	2.89
Weighted Average Exercise Price, Exercised	1.13
Weighted Average Exercise Price, Outstanding ending balance	1.93	$ 1.81
Weighted Average Exercise Price, Exercisable ending balance	1.93
Weighted Average Exercise Price, Vested and expected to vest ending balance	$ 1.93
Weighted Average Remaining Contractual Life (in years), Outstanding balance	6 years 5 months 19 days	6 years 2 months 4 days
Weighted Average Remaining Contractual Life (in years), Forfeited / Cancelled	6 years 7 months 17 days
Weighted Average Remaining Contractual Life (in years), Exercised	3 years 1 month 6 days
Weighted Average Remaining Contractual Life (in years), Exercisable balance	6 years 5 months 15 days
Weighted Average Remaining Contractual Life (in years), Vested and expected to vest balance	6 years 5 months 19 days
Aggregate Intrinsic Value, Outstanding balance	$ 4,227,972	$ 5,248,333
Aggregate Intrinsic Value, Forfeited / Cancelled balance	39,276
Aggregate Intrinsic Value, Exercised balance	981,085
Aggregate Intrinsic Value, Exercisable balance	4,182,562
Aggregate Intrinsic Value, Vested and expected to vest balance	$ 4,226,609

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule of Assumption to Calculate Weighted Average Grant Date Fair Value of Options Grant (Details) - Common Stock - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Class Of Stock [Line Items]
Expected term (in years)	0 years
Expected volatility	0.00%	43.50%
Risk-free interest rate	0.00%
Risk-free interest rate, minimum		0.33%
Risk-free interest rate, maximum		1.41%
Weighted average grant date fair value per share		$ 0.083
Grant date fair value of options vested	$ 4,182,562	$ 529,471
Intrinsic value of options exercised	$ 43,473	$ 813,148
Minimum
Class Of Stock [Line Items]
Expected term (in years)		5 years
Maximum
Class Of Stock [Line Items]
Expected term (in years)		5 years 10 months 9 days

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Restricted Stock Unit Activity (Details) - Restricted Stock Units	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Outstanding beginning balance | shares	575,922
Number of Shares, Granted | shares	416,946
Number of shares, Vested | shares	(133,380)
Number of Shares, Cancelled | shares	(3,125)
Number of Shares, Outstanding ending balance | shares	856,363
Weighted Average Grant Date Fair Value, Outstanding beginning balance | $ / shares	$ 2.65
Weighted Average Grant Date Fair Value, Granted | $ / shares	5.77
Weighted Average Grant Date Fair Value, Vested | $ / shares	3.33
Weighted Average Grant Date Fair Value, Cancelled | $ / shares	5.77
Weighted Average Grant Date Fair Value / Exercise Price, Outstanding ending balance | $ / shares	$ 4.05

Stockholders' Equity - Summar_3

Stockholders' Equity - Summary of Stock-Based Compensation Expense (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 465,336	$ 85,378	$ 903,730	$ 293,139
General and Administrative
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	215,825	42,351	616,825	202,031
Production
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	78,657	17,769	93,316	35,738
Marketing and Selling
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	114,319	17,074	129,716	34,366
Research and Development
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 56,535	$ 8,184	$ 63,873	$ 21,004

Stockholders' Equity - Schedu_2

Stockholders' Equity - Schedule of Warrant Activity (Details) - Warrants	6 Months Ended
	Jun. 30, 2021$ / sharesshares
Class Of Stock [Line Items]
Number of Shares, Beginning Warrants outstanding | shares	505,946
Number of Shares, Warrants exercised | shares	(35,067)
Number of Shares, Ending Warrants outstanding | shares	470,879
Weighted Average Grant Date Fair Value, Outstanding beginning balance | $ / shares	$ 5
Weighted Average Exercise Price, Warrant exercised | $ / shares	1.85
Weighted Average Grant Date Fair Value / Exercise Price, Outstanding ending balance | $ / shares	$ 5.23

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021USD ($)ft²Customer	Jun. 30, 2020USD ($)Customer	Jun. 30, 2021USD ($)ft²Customer	Jun. 30, 2020USD ($)Customer	Dec. 31, 2020Customer
Operating Leased Assets [Line Items]
Operating lease, rent expense | $	$ 201,120	$ 176,739	$ 452,250	$ 366,156
Purchase commitments description			In the normal course of business, the Company may enter into purchase commitments for inventory components to be delivered based upon pre-established delivery schedules over a period that may exceed one year.
Number of customer's more than10% of revenue | Customer	3	2	2	1
Number of customers more than 10% of net trade accounts receivable | Customer	3		3		3
Revenue | Customer Concentration Risk
Operating Leased Assets [Line Items]
Customers accounted for 10% or more of annual revenues	42.00%	21.00%	33.00%	34.00%
Accounts Receivable | Customer Concentration Risk
Operating Leased Assets [Line Items]
Customers accounted for 10% or more of annual revenues			68.00%		64.00%
Net Purchases | Customer Concentration Risk
Operating Leased Assets [Line Items]
Customers accounted for 10% or more of annual revenues	23.00%	47.00%	23.00%	33.00%
Offices, Manufacturing and Warehouse Facility | Bressner Technology GmbH
Operating Leased Assets [Line Items]
Operating lease, area	8,073		8,073
Offices, Manufacturing and Warehouse Facility | Escondido, California
Operating Leased Assets [Line Items]
Operating lease, area	29,342		29,342
Operating lease modified date			2019-02
Operating lease, expiration date			Aug. 31, 2024
Offices, Manufacturing and Warehouse Facility | Anaheim, California
Operating Leased Assets [Line Items]
Operating lease, area	1,632		1,632
Lessee, operating lease, term of contract	2 years		2 years
Operating lease beginning date			2021-07
Offices, Manufacturing and Warehouse Facility | Salt Lake City, Utah
Operating Leased Assets [Line Items]
Operating lease, area	3,208		3,208

Related Party Transactions - Ad

Related Party Transactions - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2019	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Related Party Transaction [Line Items]
Interest expense on all the related party		$ 417	$ 17,156	$ 4,095	$ 32,080
Unused remaining funding commitments expiration date				Apr. 1, 2020
Additional funding commitments received			$ 0		$ 0
Management | Credit Facility
Related Party Transaction [Line Items]
Line of credit facility, maximum borrowing capacity	$ 4,000,000
Debt instrument, face amount	1,150,000
Other Shareholders | Credit Facility
Related Party Transaction [Line Items]
Debt instrument, face amount	$ 350,000
Members of Board of Directors and Other Shareholders | Credit Facility
Related Party Transaction [Line Items]
Debt maturity term	2 years
Debt instrument, interest rate	9.50%
Debt instrument, monthly / quarterly principal and interest payments	$ 69,000
Warrants to purchase common stock percentage equal to original principal	10.00%
Warrants exercise price	$ 2.15
Warrants to purchase common stock	69,766
Members of Board of Directors and Other Shareholders | Credit Facility | Warrants
Related Party Transaction [Line Items]
Fair value of the warrant issued	$ 60,158

Net Income (Loss) Per Share - S

Net Income (Loss) Per Share - Summary of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss)	$ 1,697,122	$ 41,198	$ (12,162)	$ (1,096,032)	$ 1,738,320	$ (1,108,194)
Denominator:
Weighted average common shares outstanding - basic	18,513,620		16,488,325		17,934,022	16,410,660
Effect of dilutive securities	1,221,763				1,371,820
Weighted average common shares outstanding - diluted	19,735,383		16,488,325		19,305,842	16,410,660
Net income (loss) per common share:
Basic	$ 0.09		$ 0		$ 0.10	$ (0.07)
Diluted	$ 0.09		$ 0		$ 0.09	$ (0.07)

Revenue, Segment and Geograph_3

Revenue, Segment and Geographic Information - Additional Information (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2021USD ($)	Jun. 30, 2020	Jun. 30, 2021USD ($)Segment	Jun. 30, 2020
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Number of Reportable Segments | Segment			2
Germany
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Exception of Long-Lived Assets | $	$ 202,804		$ 202,804
Revenue | Customer Concentration Risk
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Concentration risk, percentage	42.00%	21.00%	33.00%	34.00%
Revenue | Customer Concentration Risk | Non-U.S.
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Concentration risk, percentage	65.00%	56.00%	65.00%	64.00%

Revenue, Segment and Geograph_4

Revenue, Segment and Geographic Information - Schedule of (Loss) Income from Operations by Reporting Segments (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Revenue	$ 14,905,009	$ 11,625,327	$ 28,220,761	$ 24,984,964
Cost of revenues	(10,252,265)	(8,300,132)	(19,135,233)	(18,264,082)
Gross profit	$ 4,652,744	$ 3,325,195	$ 9,085,528	$ 6,720,882
Gross margin %	31.20%	28.60%	32.20%	26.90%
Total operating expenses	$ (4,136,094)	$ (3,731,081)	$ (8,293,847)	$ (8,637,922)
Income (loss) from operations	516,650	(405,886)	791,681	(1,917,040)	$ (424,281)
OSS Segment
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Revenue	9,102,435	7,305,302	17,704,406	15,745,525
Cost of revenues	(5,762,867)	(4,802,177)	(11,104,229)	(10,923,086)
Gross profit	$ 3,339,568	$ 2,503,125	$ 6,600,177	$ 4,822,439
Gross margin %	36.70%	34.30%	37.30%	30.60%
Total operating expenses	$ (3,172,432)	$ (2,844,838)	$ (6,424,217)	$ (6,831,047)
Income (loss) from operations	167,136	(341,713)	175,960	(2,008,608)
Bressner Segment
Segment Reporting Reconciling Item For Operating Profit Loss From Segment To Consolidated [Line Items]
Revenue	5,802,574	4,320,025	10,516,355	9,239,439
Cost of revenues	(4,489,398)	(3,497,955)	(8,031,004)	(7,340,996)
Gross profit	$ 1,313,176	$ 822,070	$ 2,485,351	$ 1,898,443
Gross margin %	22.60%	19.00%	23.60%	20.50%
Total operating expenses	$ (963,662)	$ (886,243)	$ (1,869,630)	$ (1,806,875)
Income (loss) from operations	$ 349,514	$ (64,173)	$ 615,721	$ 91,568