SUNation Energy (SUNE) 10-Q 7 May 21 2021 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 01, 2021
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Current Fiscal Year End Date	--12-31
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Transition Report	false
Entity File Number	001-31588
Entity Registrant Name	COMMUNICATIONS SYSTEMS INC
Entity Incorporation, State or Country Code	MN
Entity Tax Identification Number	41-0957999
Entity Address, Address Line One	10900 Red Circle Drive
Entity Address, City or Town	Minnetonka
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55343
City Area Code	952
Local Phone Number	996-1674
Title of 12(b) Security	Common Stock, par value , $.05 per share
Trading Symbol	JCS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		9,320,475
Amendment Flag	false
Document Fiscal Period Focus	Q1
Entity Central Index Key	0000022701

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents	$ 14,747,054	$ 13,092,484
Investments	693,424	2,759,024
Trade accounts receivable, less allowance for doubtful accounts of $137,000 and $121,000, respectively	8,673,414	10,177,445
Inventories	8,218,822	8,696,880
Prepaid income taxes		35,948
Other current assets	1,330,487	996,472
TOTAL CURRENT ASSETS	33,663,201	35,758,253
PROPERTY, PLANT AND EQUIPMENT, net	7,088,892	7,242,072
OTHER ASSETS:
Investments	7,064,665	7,109,212
Goodwill	2,086,393	2,086,393
Operating lease right of use asset	362,812	413,415
Intangible assets, net	2,661,541	2,775,361
Other assets, net	180,734	171,619
TOTAL OTHER ASSETS	12,356,145	12,556,000
TOTAL ASSETS	53,108,238	55,556,325
CURRENT LIABILITIES:
Accounts payable	2,685,775	2,378,449
Accrued compensation and benefits	1,776,982	2,298,075
Operating lease liability	217,133	213,553
Other accrued liabilities	1,440,107	1,524,515
Accrued consideration		550,000
Income taxes payable	2,225
Dividends payable	5,387	16,147
Deferred revenue	589,444	456,912
TOTAL CURRENT LIABILITIES	6,717,053	7,437,651
LONG TERM LIABILITIES:
Long-term compensation plans	142,835	116,460
Operating lease liability	140,105	197,308
Deferred revenue	386,314	310,179
TOTAL LONG-TERM LIABILITIES	669,254	623,947
COMMITMENTS AND CONTINGENCIES (Footnote 9)
STOCKHOLDERS' EQUITY
Preferred stock, par value $1.00 per share; 3,000,000 shares authorized; none issued
Common stock, par value $.05 per share; 30,000,000 shares authorized; 9,448,129 and 9,321,927 shares issued and outstanding, respectively	472,406	466,096
Additional paid-in capital	43,969,776	43,572,114
Retained earnings	1,948,084	4,135,284
Accumulated other comprehensive loss	(668,335)	(678,767)
TOTAL STOCKHOLDERS' EQUITY	45,721,931	47,494,727
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 53,108,238	$ 55,556,325

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Condensed Consolidated Balance Sheets [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 137	$ 121
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	9,448,129	9,321,927
Common stock, shares outstanding	9,448,129	9,321,927

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) [Abstract]
Sales	$ 10,159,315	$ 9,162,742
Cost of sales	5,942,677	5,425,595
Gross profit	4,216,638	3,737,147
Operating expenses:
Selling, general and administrative expenses	5,219,731	4,960,890
Acquisition-related costs	1,143,423
Total operating expenses	6,363,154	4,960,890
Operating loss from continuing operations	(2,146,516)	(1,223,743)
Other income (expenses):
Investment and other (expense) income	(10,855)	111,757
Gain on sale of assets		308,403
Interest and other expense	(2,277)	(9,593)
Other (expense) income, net	(13,132)	410,567
Operating loss from continuing operations before income taxes	(2,159,648)	(813,176)
Income tax expense (benefit)	1,203	(4,457)
Net loss from continuing operations	(2,160,851)	(808,719)
Net income from discontinued operations, net of tax		2,313,352
Net (loss) income	(2,160,851)	1,504,633
Other comprehensive income (loss), net of tax:
Unrealized loss on available-for-sale securities	(9,299)	(14,452)
Foreign currency translation adjustment	19,731	(132,103)
Total other comprehensive income (loss)	10,432	(146,555)
Comprehensive (loss) income	$ (2,150,419)	$ 1,358,078
Basic net (loss) income per share:
Continuing operations	$ (0.23)	$ (0.09)
Discontinued operations		0.25
Basic net (loss) income per share	(0.23)	0.16
Diluted net (loss) income per share:
Continuing operations	(0.23)	(0.09)
Discontinued operations		0.25
Diluted net (loss) income per share	$ (0.23)	$ 0.16
Weighted Average Basic Shares Outstanding	9,332,589	9,265,590
Weighted Average Dilutive Shares Outstanding	9,332,589	9,445,299
Dividends declared per share		$ 0.02

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Beginning balance at Dec. 31, 2019	$ 462,637	$ 42,977,914	$ 4,649,395	$ (697,664)	$ 47,392,282
BALANCE, Shares at Dec. 31, 2019	9,252,749
Net (loss) income			1,504,633		1,504,633
Issuance of common stock under Employee Stock Purchase Plan	$ 177	21,720			21,897
Issuance of common stock under Employee Stock Purchase Plan, Shares	3,549
Issuance of common stock to Employee Stock Ownership Plan	$ 3,303	404,281			407,584
Issuance of common stock to Employee Stock Ownership Plan, Shares	66,059
Issuance of common stock under Executive Stock Plan	$ 2,329				2,329
Issuance of common stock under Executive Stock Plan, Shares	46,584
Share based compensation		79,168			79,168
Other share retirements	$ (1,099)	(101,305)	(6,382)		(108,786)
Other share retirements, Shares	(21,975)
Shareholder dividends			(189,850)		(189,850)
Other comprehensive income (loss)				(146,555)	(146,555)
Ending balance at Mar. 31, 2020	$ 467,347	43,381,778	5,957,796	(844,219)	48,962,702
BALANCE, Shares at Mar. 31, 2020	9,346,966
Beginning balance at Dec. 31, 2020	$ 466,096	43,572,114	4,135,284	(678,767)	47,494,727
BALANCE, Shares at Dec. 31, 2020	9,321,927
Net (loss) income			(2,160,851)		(2,160,851)
Issuance of common stock under Employee Stock Purchase Plan	$ 282	25,524			25,806
Issuance of common stock under Employee Stock Purchase Plan, Shares	5,647
Issuance of common stock to Employee Stock Ownership Plan	$ 3,610	326,358			329,968
Issuance of common stock to Employee Stock Ownership Plan, Shares	72,203
Issuance of common stock under Executive Stock Plan	$ 3,448				3,448
Issuance of common stock under Executive Stock Plan, Shares	68,959
Share based compensation		141,836			141,836
Other share retirements	$ (1,030)	(96,056)	(26,347)		(123,433)
Other share retirements, Shares	(20,607)
Shareholder dividends			(2)		(2)
Other comprehensive income (loss)				10,432	10,432
Ending balance at Mar. 31, 2021	$ 472,406	$ 43,969,776	$ 1,948,084	$ (668,335)	$ 45,721,931
BALANCE, Shares at Mar. 31, 2021	9,448,129

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Condensed Consolidated Statements of Changes in Stockholders' Equity [Abstract]
Shareholder dividends per share	$ 0	$ 0.02

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (2,160,851)	$ 1,504,633
Net income from discontinued operations, net of tax		2,313,352
Net loss from continuing operations	(2,160,851)	(808,719)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	260,321	211,461
Share based compensation	141,836	79,168
Deferred taxes		9,534
Gain on sale of assets		(308,403)
Changes in assets and liabilities:
Trade accounts receivables	1,506,254	3,641,383
Inventories	478,058	371,202
Prepaid income taxes	35,948	(4,085)
Other assets, net	(326,681)	25,874
Accounts payable	306,881	(1,025,979)
Accrued compensation and benefits	(165,147)	(811,873)
Other accrued liabilities	120,736	(373,465)
Income taxes payable	2,225
Net cash provided by operating activities - continuing operations	199,580	1,006,098
Net cash used in operating activities - discontinued operations		(765,468)
Net cash provided by operating activities	199,580	240,630
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(8,818)	(56,917)
Purchases of investments		(8,417,689)
Proceeds from the sale of property, plant and equipment		420,000
Proceeds from the sale of investments	2,100,848	6,448,284
Net cash provided by (used in) investing activities - continuing operations	2,092,030	(1,606,322)
Net cash provided by investing activities - discontinued operations		8,110,179
Net cash provided by investing activities	2,092,030	6,503,857
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(10,762)	(189,505)
Proceeds from issuance of common stock, net of shares withheld	29,254	24,226
Payment of contingent consideration related to acquisition	(550,000)
Purchase of common stock	(123,433)	(108,786)
Net cash used in financing activities	(654,941)	(274,065)
EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH	17,901	(36,822)
NET INCREASE IN CASH AND CASH EQUIVALENTS	1,654,570	6,433,600
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT BEGINNING OF PERIOD	13,092,484	14,607,510
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD	14,747,054	21,041,110
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Income taxes refunded	(36,971)	(7,398)
Interest paid	2,363	9,467
Dividends declared not paid	$ 5,387	$ 200,708

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Summary of Significant Accounting Policies [Abstract]
Summary of Significant Accounting Policies	NOTE 1 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES  Description of Business  Communications Systems, Inc. (herein collectively referred to as “CSI,” “our,” “we” or the “Company”) is a Minnesota corporation organized in 1969 that classifies its business into two segments: (1) the Electronics & Software segment (consisting of US-based subsidiary Transition Networks and UK-based subsidiary Net2Edge) which (i) manufactures and sells solutions that provide actionable intelligence, power and connectivity at the edge of networks through PoE products, software and services as well as traditional products such as media converters, network adapters and other connectivity products and (ii) designs, develops, and sells edge network access products, TDM (time-division multiplexing) over IP and other circuit emulation solutions, along with specialized cloud-based software solutions, primarily within the telecommunications market; and (2) the Services and Support segment (consisting of subsidiaries JDL and Ecessa), which (i) provides technology solutions including virtualization, managed services, wired and wireless network design and implementation, and hybrid cloud infrastructure and deployment and (ii) designs, develops, and sells SD-WAN (software-designed wide-area network) solutions.  The Company classifies its businesses into the two segments discussed above . Non-allocated general and administrative expenses are separately accounted for as “Other” in the Company’s segment reporting. Intersegment revenues are eliminated upon consolidation.  Financial Statement Presentation  The condensed consolidated balance sheets as of March 31, 2021 , the condensed consolidated statement of changes in stockholders’ equity for the three months ended March 31, 2021 and 2020, and the related condensed consolidated statements of income (loss) and comprehensive income (loss), and the condensed consolidated statements of cash flows for the periods ended March 31, 2021 and 2020 have been prepared by Company management . In the opinion of management, all adjustments (which include only normal recurring adjustments, except where noted) necessary to present fairly the financial position, results of operations, and cash flows at March 31, 2021 and 2020 and for the periods then ended have been made.  Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with generally accepted accounting principles in the United States of America have been condensed or omitted. We recommend these condensed consolidated financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s December 31 , 2020 Annual Report to Shareholders on Form 10-K (“ 2020 Form 10-K”). The results of operations for the period ended March 31, 2021 are not necessarily indicative of operating results for the entire year.  The presentation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the balance sheet date, and the reported amounts of revenues and expenses during the reporting period. The estimates and assumptions used in the accompanying condensed consolidated financial statements are based upon management’s evaluation of the relevant facts and circumstances as of the time of the financial statements. Actual results could differ from those estimates.  Except to the extent updated or described below, the significant accounting policies set forth in Note 1 to the consolidated financial statements in the December 31, 2020 Form 10-K, appropriately represent, in all material respects, the current status of accounting policies, and are incorporated herein by reference.  Accumulated Other Comprehensive Loss  The components of accumulated other comprehensive loss, net of tax, are as follows:       Foreign Currency Translation Unrealized gain (loss) on securities Accumulated Other Comprehensive Loss  December 31, 2020 $ (700,000) $ 21,000 $ (679,000)   Net current period change 20,000 (9,000) 11,000   March 31, 2021 $ (680,000) $ 12,000 $ (668,000) 

Revenue Recognition

Revenue Recognition	3 Months Ended
	Mar. 31, 2021
Revenue Recognition [Abstract]
Revenue Recognition	NOTE 2 – REVENUE RECOGNITION  Electronics & Software  The Company has determined that the revenue recognition for its Electronics & Software segment occurs upon delivery of the Company’s connectivity infrastructure and data transmission products. To determine when revenue should be recognized, it is important to determine when the transfer of control has occurred. The Company has determined that control transfers for these products upon shipment or delivery to the customer, in accordance with the agreed upon shipping terms. As such, the timing of revenue recognition occurs at a specific point in time.  Services & Support  The Company has determined that the following performance obligations identified in its Services & Support segment are transferred over time: managed services and professional services (time and materials (“T&M”) and fixed price) as well as services under maintenance and service contracts. The managed services performance obligation is a bundled solution consisting of a series of distinct services that are substantially the same and that have the same pattern of transfer to the customer and are therefore recognized evenly over the term of the contract. T&M professional services arrangements are recognized over time with an input method based on hours expended towards satisfying the performance obligation. Fixed price professional service arrangements under a relatively longer-term service are also recognized over time with an input method based on hours expended. Maintenance and service contracts are recognized evenly over the life of the contract.  The Company has also identified the following performance obligations within its Services & Support segment that are recognized at a point in time which include resale of third-party hardware and software, installation, arranging for another party to transfer services to the customer, and certain professional services. The resale of third-party hardware and software is recognized at a point in time, when the goods are shipped or delivered to the customer’s location, in accordance with the shipping terms. Installation services are recognized at a point in time when the services are completed. The service the Company provides to arrange for another party to transfer services to the customer is satisfied at a point in time after the Company has transferred control when the service is first available to the customer by the third-party vendor. The Company reports revenue from these third-party services on a net basis in its financial statements. Depending on the nature of the service, certain professional services transfer control at a point in time. The Company evaluates these circumstances on a case by case basis to determine if revenue should be recognized over time or at a point in time.  Disaggregation of revenue  Revenues are recognized when control of the promised goods or services is transferred to our customers, in an amount that best reflects the consideration we expect to receive in exchange for those goods or services. In accordance with ASC 606-10-50-5, the following tables present how we disaggregate our revenues, which is different for each segment.  For the Electronics & Software segment, we analyze revenue by region and product group, which is as follows for the three months ended March 31, 2021 and 2020 :      Electronics & Software Sales by Region  Three Months Ended March 31  2021 2020  North America $ 7,201,000 $ 7,448,000  International 1,164,000 1,088,000  $ 8,365,000 $ 8,536,000        Electronics & Software Sales by Product Group  Three Months Ended March 31  2021 2020  Intelligent edge solutions $ 3,713,000 $ 3,354,000  Traditional products 4,652,000 5,182,000  $ 8,365,000 $ 8,536,000   For the Services & Support segment, we analyze revenue by customer group and type, which is as follows for the three months ended March 31, 2021 and 2020 :     Services & Support Revenue by Customer Group  Three Months Ended March 31  2021 2020  Financial $ 424,000 $ 94,000  Healthcare 253,000 190,000  Education 63,000 93,000  Other commercial clients 1,054,000 250,000  CSI IT operations 144,000 200,000  $ 1,938,000 $ 827,000       Services & Support Revenue by Type  Three Months Ended March 31  2021 2020  Project & product revenue $ 385,000 $ 141,000  Services & support revenue 1,553,000 686,000  $ 1,938,000 $ 827,000  

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2021
Discontinued Operations [Abstract]
Discontinued Operations	NOTE 3 – DISCONTINUED OPERATIONS  On March 11, 2020, the Company sold the remainder of its Suttle business lines, including the SoHo, MediaMAX, and SpeedStar brands and inventory as well as working capital, certain capital equipment, intellectual property, and customer relationships to Oldcastle Infrastructure, Inc. (“Oldcastle”) for $8,000,000 , with a working capital adjustment 90 days after close. Oldcastle will operate the majority of the acquired Suttle business through its wholly-owned subsidiary, Primex Technologies, Inc. The Company received proceeds of $ 8,900,000 and recorded a gain on the sale of $ 2,247,000 during 2020.  Concurrent with the closing of the transaction, the Company and Oldcastle entered into a Transition Services Agreement (“TSA”) under which Suttle continued to manufacture products for Oldcastle for six months, to ensure seamless supply and quality assurance to the existing customer base. Concurrently with the closing of the transaction and the TSA, the Company and Oldcastle also entered into a lease agreement under which Oldcastle agreed to lease two buildings in Hector, Minnesota, where Suttle had conducted operations. Base rents under the lease agreement range from $6,970 to $7,180 per month. The presentation of discontinued operations has been retrospectively applied to all prior periods presented.  The financial results of the discontinued operations are as follows:      Three Months Ended March 31  2021 2020   Sales $ - $ 3,025,000  Cost of sales - 2,050,000  Selling, general and administrative expenses - 500,000  Restructuring expenses - 320,000  Gain on sale of assets - (2,161,000)  Operating income before income taxes - 2,316,000  Income tax expense - 3,000  Income from discontinued operations $ - $ 2,313,000  During the three months ended March 31, 2020 , the Company re corded $ 320,000 in restructuring expense. This consisted of severance and related benefits costs due to the sale of the remainder of Suttle’s business lines and the closure of the plant. The Company had no restructuring costs for the three months ended March 31, 2021, paid $ 186,000 in restructuring charges during the first three months of 202 1 and had $ 66,000 in restructu ring accruals recorded in accrued compensation and benefits at March 31, 2021 that are expected to be paid during the second quarter of 2021.

Cash Equivalents and Investment

Cash Equivalents and Investments	3 Months Ended
	Mar. 31, 2021
Cash Equivalents and Investments [Abstract]
Cash Equivalents and Investments	NOTE 4 – CASH EQUIVALENTS AND INVESTMENTS  The following tables show the Company’s cash equivalents and available –for-sale securities’ amortized cost, gross unrealized gains, gross unrealized losses and fair value by significant investment category recorded as cash and cash equivalents or short- and long-term investments as of March 31, 2021 and December 31, 2020 :     March 31, 2021  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 11,530,000 $ - $ - $ 11,530,000 $ 11,530,000 $ - $ -  Subtotal 11,530,000 - - 11,530,000 11,530,000 - -   Investments:  Corporate Notes/Bonds 6,257,000 - (3,000) 6,254,000 - 693,000 5,561,000  Convertible Debt 605,000 - - 605,000 - - 605,000  Subtotal 6,862,000 - (3,000) 6,859,000 - 693,000 6,166,000    Total $ 18,392,000 $ - $ (3,000) $ 18,389,000 $ 11,530,000 $ 693,000 $ 6,166,000         December 31, 2020  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 9,424,000 $ - $ - $ 9,424,000 $ 9,424,000 $ - $ -  Subtotal 9,424,000 - - 9,424,000 9,424,000 - -   Investments:  Commercial Paper 700,000 - - 700,000 - 700,000 -  Corporate Notes/Bonds 7,658,000 7,000 (1,000) 7,664,000 - 2,059,000 5,605,000  Convertible Debt 605,000 - - 605,000 - - 605,000  Subtotal 8,963,000 7,000 (1,000) 8,969,000 - 2,759,000 6,210,000    Total $ 18,387,000 $ 7,000 $ (1,000) $ 18,393,000 $ 9,424,000 $ 2,759,000 $ 6,210,000  The following table summarizes the estimated fair value of our investments, designated as available-for-sale and classified by the contractual maturity date of the securities as of March 31, 2021 :    Amortized Cost Estimated Market Value   Due within one year $ 693,000 $ 693,000  Due after one year through five years 6,169,000 6,166,000  $ 6,862,000 $ 6,859,000 The Company did no t recognize any gross realized gains or losses during either of the three-month periods ending March 31, 2021 and 2020 , respectively. If the Company had realized gains or losses, they would be included within investment and other income in the accompanying condensed consolidated statement of income (loss) and comprehensive income (loss) . In April 2020, the Company made an $899,000 investment in the common stock of Quortus Ltd., a UK-based company that provides virtual core network software for Private LTE solutions for critical and secure communications. T his investment wa s important for the Company’s Electronics & Software segment because this segment has be en partnering with Quortus to integrate the Quortus Private LTE core in existing and new products for th at segment ’s federal business, network extensions, and private networks for enterprises. The Company’s investment represents less than 10% of the outstanding equity of Quortus Ltd. The Company uses the cost method to account for investments in common stock of entities such as Quortus if the Company does not have the ability to exercise significant influence over the operating and financial matters of the entity . The Company also uses the cost method to account for its i nvestments that are not in the form of common stock or in-substance common stock in entities if the Company does not have the ability to exercise significant influence over the entity’s operating and financial matters .

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Mar. 31, 2021
Stock-Based Compensation [Abstract]
Stock-Based Compensation	NOTE 5 - STOCK-BASED COMPENSATION  Employee Stock Purchase Plan  Under the Company’s Employee Stock Purchase Plan (“ESPP”), employees are able to acquire shares of common stock at 85 % of the price at the end of each current quarterly plan term. The most recent term ended March 31, 2021 . The ESPP is considered compensatory under current Internal Revenue Service rules. At March 31, 2021 , after giving effect to the shares issued as of that date, 63,196 shares remain available for future issuance under the ESPP. The ESPP was suspended effective March 31, 2021 due to conditions of the Pineapple Energy Merger Agreement.  2011 Executive Incentive Compensation Plan  On March 28, 2011 the Board adopted and on May 19, 2011 the Company’s shareholders approved the Company’s 2011 Executive Incentive Compensation Plan (“2011 Incentive Plan”). The 2011 Incentive Plan authorizes incentive awards to officers, key employees and non-employee directors in the form of options (incentive and non-qualified), stock appreciation rights, restricted stock, restricted stock units, performance stock units (“deferred stock”), performance cash units, and other awards in stock, cash, or a combination of stock and cash. The 2011 Incentive Plan, as amended, allows the issuance of up to 2,500,000 shares of common stock.  At March 31, 2021 , 499,991 shares have been issued under the 2011 Incentive Plan, 1,239,452 shares are subject to currently outstanding options, deferred stock awards, and unvested restricted stock units, and 760,557 shares are eligible for grant under future awards.  Changes in Stock Options Outstanding  The following table summarizes changes in the number of outstanding stock options under the 2011 Incentive Plan over the period December 31, 2020 to March 31, 2021 :     Weighted average  Weighted average remaining  exercise price contractual term  Options per share in years  Outstanding – December 31, 2020 1,173,190 $ 6.52 3.35  Awarded - -  Exercised - -  Forfeited (59,365) 12.97  Outstanding – March 31, 2021 1,113,825 6.18 3.27   Exercisable at March 31, 2021 885,855 $ 6.55 2.61  Expected to vest March 31, 2021 1,113,825 6.18 3.27  The aggregate intrinsic value of all options (the amount by which the market price of the stock on the last day of the period exceeded the market price of the stock on the date of grant) outstanding at March 31, 2021 was $ 1,215,000 . The intrinsic value of all options exercised during the three months ended March 31, 2021 was $ 0 . Net cash proceeds from the exercise of all stock options were $ 0 in each of the three-month periods ended March 31, 2021 and 2020 .  Changes in Deferred Stock Outstanding  The following table summarizes the changes in the number of deferred stock shares under the 2011 Incentive Plan over the period December 31, 2020 to March 31, 2021 :     Weighted Average  Grant Date  Shares Fair Value  Outstanding – December 31, 2020 272,695 $ 3.91  Granted - -  Vested (68,959) 3.07  Forfeited (78,109) 3.56  Outstanding – March 31, 2021 125,627 4.58  Compensation Expense  Share-based compensation expense recognized for the three months ended March 31, 2021 was $ 142,000 before income taxes and $ 112,000 after income taxes. Share-based compensation expense recognized for the three months ended March 31 , 2020 was $ 79,000 before income taxes and $ 63,000 after income taxes. Unrecognized compensation expense for the Company’s plans was $ 424,000 at March 31, 2021 and is expected to be recognized over a weighted-average period of 2.2 years. Share-based compensation expense is recorded as a part of selling, general and administrative expenses.  Employee Stock Ownership Plan (ESOP)  All eligible employees of the Company participate in the ESOP after completing one year of service. Contributions are allocated to each participant based on compensation and vest 20% after two years of service and incrementally thereafter, with full vesting after six years . The Company contributed $329,968 for which the Company issued 72,203 shares in March 2021 for the 2020 ESOP contribution.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2021
Inventories [Abstract]
Inventories	NOTE 6 - INVENTORIES  Inventories summarized below are priced at the lower of first-in, first-out cost or net realizable value:     March 31 December 31  2021 2020  Finished goods $ 7,462,000 $ 7,871,000  Raw and processed materials 757,000 826,000  $ 8,219,000 $ 8,697,000

Business Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Business Combinations	NOTE 7 – BUSINESS COMBINATIONS  On May 14, 2020, in a reverse triangular merger, the Company completed the acquisition of 100% of Ecessa Corporation. Ecessa designs and distributes software-defined wide area networking (SD-WAN) solutions for businesses through the deployment of over 10,000 field installations (since 2002) of Ecessa Edge®, PowerLink®, and WANworX® controllers. The acquisition expands the Company’s IoT intelligent edge products and services and provides opportunities to expand the Company’s services platform. The purchase price was $ 4,642,000 , with cash acquired totaling $ 666,000 . The purchase price includes initial consideration of $ 4,666,000 and $ (24,000) in working capital adjustments.  The assets and liabilities of Ecessa were recorded in the consolidated balance sheet within the Services & Support segment as of the acquisition date, at their respective fair values. The purchase price allocation is based on the estimated fair value of assets acquired and liabilities assumed and has been allocated as follows:      May 14, 2020   Current assets $ 1,101,000  Property, plant, and equipment 127,000  Other long-term assets 421,000  Intangible assets 2,260,000  Goodwill 1,341,000  Total assets 5,250,000   Total liabilities 608,000   Net assets acquired $ 4,642,000   Identifiable intangible assets are definite-lived assets. These assets include trade name/trademark/internet domain assets, non-compete agreements, customer relationships, and internally developed software intangible assets, and have a weighted average amortization period of 7 years, which matches the weighted average useful life of the assets. Goodwill recorded as part of the purchase price allocation is not tax deductible.  On November 3, 2020, the Company acquired the operating assets of privately held IVDesk Minnesota, Inc. (“IVDesk”) from a third-party receiver (“Receiver”). IVDesk provides private cloud services to small- and mid-size businesses (SMB), with a particular focus on the financial services industry. The acquisition expands the Company’s monthly recurring revenue service model, bringing additional resources and experience in cloud-delivered applications. The purchase price was $ 1,368,000 and includes initial consideration of $ 950,000 , working capital adjustments of $ (132,000) , and $ 550,000 in contingent consideration. The Company agreed to pay up to $550,000 in additional consideration upon retaining a certain customer level 120 days after closing. During March 2021, upon meeting the requirements of the earn-out, the Company paid the Receiver the additional consideration. At March 31, 2021 , the Company had no further liabilities related to the contingent consideration.  The assets and liabilities of IVDesk are recorded in the consolidated balance sheet within the Services & Support segment at March 31, 2021 . The purchase price allocation was based on estimates of the fair value of assets acquired and liabilities assumed, and included total assets of $1,500,000 , including property, plant, and equipment of $35,000 , goodwill of $745,000 and intangible assets of $720,000 , and total liabilities of $132,000 . Identifiable intangible assets are definite-lived assets. These assets include customer relationships and have a weighted average amortization period of 8 years, which matches the weighted average useful life of the assets. 

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets [Abstract]
Goodwill and Intangible Assets	NOTE 8 – GOODWILL AND INTANGIBLE ASSETS  The changes in the carrying amount of goodwill for the year ended December 31, 2020 and three months ended March 31, 2021 by company are as follows:      Ecessa IVDesk Total   January 1, 2020 $ - $ - $ -   Acquisition 1,341,000 745,000 2,086,000   December 31, 2020 $ 1,341,000 $ 745,000 $ 2,086,000   March 31, 2021 $ 1,341,000 $ 745,000 $ 2,086,000   Gross goodwill 1,341,000 745,000 2,086,000  Accumulated impairment loss - - -  Balance at March 31, 2021 $ 1,341,000 $ 745,000 $ 2,086,000  The Company’s identifiable intangible assets with finite lives are being amortized over their estimated useful lives and were as follows:      March 31, 2021  Gross Carrying Amount Accumulated Amortization Net   Trade Name/Trademark/Internet Domain Assets $ 101,000 $ (7,000) $ 94,000  Non-compete Agreements 80,000 (22,000) 58,000  Customer Relationships 1,010,000 (86,000) 924,000  Internally Developed Software 1,800,000 (214,000) 1,586,000  $ 2,991,000 $ (329,000) $ 2,662,000      December 31, 2020  Gross Carrying Amount Accumulated Amortization Net   Trade Name/Trademark/Internet Domain Assets $ 90,000 $ (5,000) $ 85,000  Non-compete Agreements 80,000 (16,000) 64,000  Customer Relationships 1,010,000 (34,000) 976,000  Internally Developed Software 1,800,000 (150,000) 1,650,000  $ 2,980,000 $ (205,000) $ 2,775,000  Amortization expense on these identifiable intangible assets was $ 124,000 and $0 in first three months of 2021 and 2020 respectively. The amortization expense is included in selling, general and administrative expenses. The estimated future amortization expense for identifiable intangible assets during the next five fiscal years is as follows:      Year Ending December 31:  Q2 - Q4 2021 $ 264,000  2022 352,000  2023 336,000  2024 325,000  2025 292,000  Thereafter 410,000 

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2021
Contingencies [Abstract]
Contingencies	NOTE 9 – CONTINGENCIES  In the ordinary course of business, the Company is exposed to legal actions and claims and incurs costs to defend against these actions and claims. Company management is not aware of any outstanding or pending legal actions or claims that could materially affect the Company’s financial position or results of operations.

Debt

Debt	3 Months Ended
	Mar. 31, 2021
Debt [Abstract]
Debt	NOTE 10 – DEBT  Line of Credit On August 28, 2020, the Company entered into a Credit Agreement with Wells Fargo Bank, National Association, establishing a $5,000,000 line of credit facility agreement, that replaced a prior facility. On October 29, 2020, the Company entered into a First Amendment to the Credit Agreement. Under the Credit Agreement, as amended, the Company has the ability to obtain one or more letters of credit in an aggregate amount up to $2,000,000 , subject to the general terms of the credit agreement.  The Company had no outstanding borrowings against the line of credit, or the prior credit facility, at March 31, 2021 or December 31, 2020 and $ 2,101,000 of the credit line is available for use. Due to the revolving nature of loans under this credit facility, additional borrowings and periodic repayments and re-borrowings may be made until the maturity date. Interest on borrowings on the credit line is at LIBOR plus 1.25% , with a minimum LIBOR rate of 0.75% , ( 2.0% at March 31, 2021 ). The Credit Agreement expires August 28, 2021 and is secured by government securities owned and pledged by the Company. The Credit Agreement contains financial covenants including a tangible net worth minimum. The Company was in compliance with its financial covenants at March 31, 2021 .

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Taxes [Abstract]
Income Taxes	NOTE 1 1 – INCOME TAXES In the preparation of the Company’s consolidated financial statements, management calculates income taxes based upon the estimated effective rate applicable to operating results for the full fiscal year. This includes estimating the current tax liability as well as assessing differences resulting from different treatment of items for tax and book accounting purposes. These differences result in deferred tax assets and liabilities, which are recorded on the balance sheet. Management analyzes these assets and liabilities regularly and assesses the likelihood that deferred tax assets will be recovered from future taxable income. At March 31, 2021 there was $ 116,000 of net uncertain tax benefit positions that would reduce the effective income tax rate if recognized. The Company records interest and penalties related to income taxes as income tax expense in the condensed consolidated statements of income (loss) and comprehensive income (loss).  The Company is subject to U.S. federal income tax as well as income tax of multiple state and foreign jurisdictions. The tax years 2017 - 2020 remain open to examination by the Internal Revenue Service and the years 2016 - 2020 remain open to examination by various state tax departments. The tax years from 2017 - 2020 remain open in Costa Rica. The Company’s effective income tax rate was (0.1%) for the first three months of 2021 . The effective tax rate differs from the federal tax rate of 21 % due to state income taxes, foreign tax rate differences, foreign losses not deductible for U.S. income tax purposes, the effect of uncertain income tax positions, stock compensation windfalls and changes in valuation allowances related to deferred tax assets . The foreign operating losses may ultimately be deductible in the countries in which they occurred; however, the Company has not recorded a deferred tax asset for these losses due to uncertainty regarding the eventual realization of the benefit. The effect of the foreign operations was an overall rate decrease of approximately 0.5% for the three months ended March 31, 2021 . There were no additional uncertain tax positions identified in the first three months of 2021 . The Company's effective income tax rate for the three months ended March 31 , 2020 was 0.5% , and differed from the federal tax rate due to state income taxes, foreign tax rate differences, foreign losses not deductible for U.S. income tax purposes, changes in the reserve for uncertain income tax positions, provisions for interest charges for uncertain income tax positions, stock compensation windfalls and changes in valuation allowances related to deferred tax assets .

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 2021
Segment Information [Abstract]
Segment Information	NOTE 12 – SEGMENT INFORMATION  The Company classifies its businesses into two segments as follows:  · Electronics & Software: designs, develops and sells Intelligent Edge solutions that provide connectivity and power through PoE products and actionable intelligence to end devices in an IoT ecosystem through embedded and cloud-based management software. In addition, this segment continues to generate revenue from its traditional products consisting of, media converters, NICs, and Ethernet switches that offer the ability to affordably integrate the benefits of fiber optics into any data network; and · Services & Support: provides technology solutions that address prevalent IT challenges, including network resiliency, security products and services, network virtualization, and cloud migrations, IT managed services, wired and wireless network design and implementation, and converged infrastructure configuration, deployment and management .  Management has chosen to organize the Company and disclose reportable segments based on our products and services. Intersegment revenues are eliminated upon consolidation. “Other” includes non-allocated corporate overhead costs. As a result of our treatment of Suttle as discontinued operations, “Other” includes amounts previously allocated to Suttle that do not meet the criteria to be included in income from discontinued operations.  Information concerning the Company’s continuing operations in these two segments for the three-month periods ended March 31, 2021 and 2020 are as follows:      Electronics & Services & Intersegment  Software Support Other Eliminations Total  Three Months Ended March 31, 2021  Sales $ 8,365,000 $ 1,938,000 $ - $ (144,000) $ 10,159,000  Cost of sales 4,781,000 1,162,000 - - 5,943,000  Gross profit 3,584,000 776,000 - (144,000) 4,216,000  Selling, general and  administrative expenses 3,608,000 979,000 777,000 (144,000) 5,220,000  Acquisition-related costs - - 1,143,000 - 1,143,000  Operating loss (24,000) (203,000) (1,920,000) - (2,147,000)  Other (expense) income (19,000) - 6,000 - (13,000)  Loss before income tax $ (43,000) $ (203,000) $ (1,914,000) $ - $ (2,160,000)   Depreciation and amortization $ 68,000 $ 154,000 $ 38,000 $ - $ 260,000   Capital expenditures $ 4,000 $ 5,000 $ - $ - $ 9,000   Assets $ 14,571,000 $ 7,950,000 $ 30,614,000 $ (27,000) $ 53,108,000       Electronics & Services & Intersegment  Software Support Other Eliminations Total  Three Months Ended March 31, 2020  Sales $ 8,536,000 $ 827,000 $ - $ (200,000) $ 9,163,000  Cost of sales 4,807,000 620,000 - (1,000) 5,426,000  Gross profit 3,729,000 207,000 - (199,000) 3,737,000  Selling, general and  administrative expenses 3,897,000 328,000 935,000 (199,000) 4,961,000  Operating loss (168,000) (121,000) (935,000) - (1,224,000)  Other income 14,000 - 397,000 - 411,000  Loss before income tax $ (154,000) $ (121,000) $ (538,000) $ - $ (813,000)   Depreciation and amortization $ 71,000 $ 13,000 $ 127,000 $ - $ 211,000   Capital expenditures $ 43,000 $ - $ 13,000 $ - $ 56,000   Assets $ 15,665,000 $ 1,394,000 $ 39,807,000 $ (27,000) $ 56,839,000              

Net Income (Loss) Per Share

Net Income (Loss) Per Share	3 Months Ended
	Mar. 31, 2021
Net Income (Loss) Per Share [Abstract]
Net Income (Loss) Per Share	NOTE 13 – NET INCOME (LOSS) PER SHARE  Basic net income (loss) per common share is based on the weighted average number of common shares outstanding during each period and year. Diluted net income per common share takes into effect the dilutive effect of potential common shares outstanding. The Company’s only potential common shares outstanding are stock options and shares associated with the long-term incentive compensation plans, which resulted in a dilutive effect of 0 and 179,709 shares for the three months ended March 31, 2021 and 2020, respectively. The Company calculates the dilutive effect of outstanding options using the treasury stock method. Due to the net losses in the first three months ended March 31, 2021 , there was no dilutive impact from stock options or unvested shares. Options totaling 485,108 and 632,114 were excluded from the calculation of diluted earnings per share for the three months ended March 31, 2021 and 2020, respectively because the exercise price was greater than the average market price of common stock during the period and deferred stock awards totaling 0 and 117,688 shares would not have been included for the three months ended March 31, 2021 and 2020 , because of unmet performance conditions.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
Fair Value Measurements [Abstract]
Fair Value Measurements	NOTE 14 – FAIR VALUE MEASUREMENTS The accounting guidance establishes a valuation hierarchy for disclosure of the inputs to valuation used to measure fair value. This hierarchy prioritizes the inputs into three broad levels as follows: Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access at the measurement date. Level 2 – Observable inputs such as quoted prices for similar instruments and quoted prices in markets that are not active, and inputs that are directly observable or can be corroborated by observable market data. The types of assets and liabilities included in Level 2 are typically either comparable to actively traded securities or contracts, such as treasury securities with pricing interpolated from recent trades of similar securities, or priced with models using highly observable inputs, such as commodity options priced using observable forward prices and volatilities. Level 3 – Significant inputs to pricing that have little or no observability as of the reporting date. The types of assets and liabilities included in Level 3 are those with inputs requiring significant management judgment or estimation, such as the complex and subjective models and forecasts used to determine the fair value of financial instruments. Financial assets and liabilities measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020 , are summarized below:     March 31, 2021   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 11,530,000 $ - $ - $ 11,530,000  Subtotal 11,530,000 - - 11,530,000   Short-term investments:  Corporate Notes/Bonds - 693,000 - 693,000  Subtotal - 693,000 - 693,000   Long-term investments:  Corporate Notes/Bonds - 5,561,000 - 5,561,000  Convertible debt - - 605,000 605,000  Subtotal - 5,561,000 605,000 6,166,000   Total $ 11,530,000 $ 6,254,000 $ 605,000 $ 18,389,000      December 31, 2020   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 9,424,000 $ - $ - $ 9,424,000  Subtotal 9,424,000 - - 9,424,000   Short-term investments:  Commercial Paper - 700,000 - 700,000  Corporate Notes/Bonds - 2,059,000 - 2,059,000  Subtotal - 2,759,000 - 2,759,000   Long-term investments:  Corporate Notes/Bonds - 5,605,000 - 5,605,000  Convertible debt - - 605,000 605,000  Subtotal - 5,605,000 605,000 6,210,000   Current Liabilities:  Contingent Consideration - - (550,000) (550,000)  Subtotal - - (550,000) (550,000)   Total $ 9,424,000 $ 8,364,000 $ 55,000 $ 17,843,000   The estimated fair value of contingent consideration as of December 31, 2020 was $550,000 , as noted above. The estimated fair value is considered a level 3 measurement because the probability weighted discounted cash flow methodology used to estimate fair value includes the use of significant unobservable inputs, primarily the contractual contingent consideration revenue targets and assumed probabilities. The Company paid the full amount of the contingent consideration during the three months ended March 31, 2021 and there was no liability at March 31, 2021 .  We record transfers between levels of the fair value hierarchy, if necessary, at the end of the reporting period. There were no transfers between levels during the three and nine months ended March 31, 2021 .

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2021
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	 NOTE 15 – RECENT ACCOUNTING PRONOUNCEMENTS  In June 2016, FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments." The amendments in this update replace the incurred loss impairment methodology in current U.S. GAAP with a methodology that reflects expected credit losses. This ASU is intended to provide financial statement users with more decision-useful information about the expected credit losses and is effective for annual periods and interim periods for those annual periods beginning after December 15, 2022, which for us is the first quarter ending March 31, 2023. Entities may early adopt beginning after December 15, 2018. We are currently evaluating the impact of the adoption of ASU 2016-13 on our consolidated financial statements. 

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	NOTE 16 – SUBSEQUENT EVENTS  On April 28, 2021 the Company entered into a definitive securities purchase agreement with Lantronix, Inc. (Nasdaq: LTRX) (“Lantronix”), under which CSI agreed to sell to Lantronix CSI’s Transition Networks and Net2Edge businesses, which comprise substantially all the assets of the Company’s E&S segment, for an aggregate purchase price of up to $32,027,566 , consisting of (i) $25,027,566 in cash payable at closing, subject to a working capital adjustment following closing, plus (ii) earnout payments of up to $7,000,000 , payable following two successive 180-day intervals after the closing of the transaction based on revenue targets for these companies. The sale requires CSI shareholder approval and is expected to close in June 2021. Concurrently with the closing of the transaction, CSI and Lantronix will enter into a Transition Services Agreement under which CSI will perform administrative and IT services, and lease office, warehouse and production space to Lantronix at CSI’s Minnetonka, Minnesota facility for a period of up to twelve months. 

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policy)	3 Months Ended
	Mar. 31, 2021
Summary of Significant Accounting Policies [Abstract]
Description of Business	Description of Business  Communications Systems, Inc. (herein collectively referred to as “CSI,” “our,” “we” or the “Company”) is a Minnesota corporation organized in 1969 that classifies its business into two segments: (1) the Electronics & Software segment (consisting of US-based subsidiary Transition Networks and UK-based subsidiary Net2Edge) which (i) manufactures and sells solutions that provide actionable intelligence, power and connectivity at the edge of networks through PoE products, software and services as well as traditional products such as media converters, network adapters and other connectivity products and (ii) designs, develops, and sells edge network access products, TDM (time-division multiplexing) over IP and other circuit emulation solutions, along with specialized cloud-based software solutions, primarily within the telecommunications market; and (2) the Services and Support segment (consisting of subsidiaries JDL and Ecessa), which (i) provides technology solutions including virtualization, managed services, wired and wireless network design and implementation, and hybrid cloud infrastructure and deployment and (ii) designs, develops, and sells SD-WAN (software-designed wide-area network) solutions.  The Company classifies its businesses into the two segments discussed above . Non-allocated general and administrative expenses are separately accounted for as “Other” in the Company’s segment reporting. Intersegment revenues are eliminated upon consolidation.
Financial Statement Presentation	Financial Statement Presentation  The condensed consolidated balance sheets as of March 31, 2021 , the condensed consolidated statement of changes in stockholders’ equity for the three months ended March 31, 2021 and 2020, and the related condensed consolidated statements of income (loss) and comprehensive income (loss), and the condensed consolidated statements of cash flows for the periods ended March 31, 2021 and 2020 have been prepared by Company management . In the opinion of management, all adjustments (which include only normal recurring adjustments, except where noted) necessary to present fairly the financial position, results of operations, and cash flows at March 31, 2021 and 2020 and for the periods then ended have been made.  Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with generally accepted accounting principles in the United States of America have been condensed or omitted. We recommend these condensed consolidated financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s December 31 , 2020 Annual Report to Shareholders on Form 10-K (“ 2020 Form 10-K”). The results of operations for the period ended March 31, 2021 are not necessarily indicative of operating results for the entire year.  The presentation of financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the balance sheet date, and the reported amounts of revenues and expenses during the reporting period. The estimates and assumptions used in the accompanying condensed consolidated financial statements are based upon management’s evaluation of the relevant facts and circumstances as of the time of the financial statements. Actual results could differ from those estimates.  Except to the extent updated or described below, the significant accounting policies set forth in Note 1 to the consolidated financial statements in the December 31, 2020 Form 10-K, appropriately represent, in all material respects, the current status of accounting policies, and are incorporated herein by reference.
Accumulated Other Comprehensive Loss	Accumulated Other Comprehensive Loss  The components of accumulated other comprehensive loss, net of tax, are as follows:       Foreign Currency Translation Unrealized gain (loss) on securities Accumulated Other Comprehensive Loss  December 31, 2020 $ (700,000) $ 21,000 $ (679,000)   Net current period change 20,000 (9,000) 11,000   March 31, 2021 $ (680,000) $ 12,000 $ (668,000) 

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2021
Summary of Significant Accounting Policies [Abstract]
Components of Accumulated Other Comprehensive Loss	    Foreign Currency Translation Unrealized gain (loss) on securities Accumulated Other Comprehensive Loss  December 31, 2020 $ (700,000) $ 21,000 $ (679,000)   Net current period change 20,000 (9,000) 11,000   March 31, 2021 $ (680,000) $ 12,000 $ (668,000) 

Revenue Recognition (Tables)

Revenue Recognition (Tables)	3 Months Ended
	Mar. 31, 2021
Revenue Recognition [Abstract]
Schedule of Disaggregation of Revenues	For the Electronics & Software segment, we analyze revenue by region and product group, which is as follows for the three months ended March 31, 2021 and 2020 :      Electronics & Software Sales by Region  Three Months Ended March 31  2021 2020  North America $ 7,201,000 $ 7,448,000  International 1,164,000 1,088,000  $ 8,365,000 $ 8,536,000        Electronics & Software Sales by Product Group  Three Months Ended March 31  2021 2020  Intelligent edge solutions $ 3,713,000 $ 3,354,000  Traditional products 4,652,000 5,182,000  $ 8,365,000 $ 8,536,000   For the Services & Support segment, we analyze revenue by customer group and type, which is as follows for the three months ended March 31, 2021 and 2020 :     Services & Support Revenue by Customer Group  Three Months Ended March 31  2021 2020  Financial $ 424,000 $ 94,000  Healthcare 253,000 190,000  Education 63,000 93,000  Other commercial clients 1,054,000 250,000  CSI IT operations 144,000 200,000  $ 1,938,000 $ 827,000       Services & Support Revenue by Type  Three Months Ended March 31  2021 2020  Project & product revenue $ 385,000 $ 141,000  Services & support revenue 1,553,000 686,000  $ 1,938,000 $ 827,000  

Discontinued Operations (Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2021
Discontinued Operations [Abstract]
Schedule of Financial Results of Discontinued Operations	   Three Months Ended March 31  2021 2020   Sales $ - $ 3,025,000  Cost of sales - 2,050,000  Selling, general and administrative expenses - 500,000  Restructuring expenses - 320,000  Gain on sale of assets - (2,161,000)  Operating income before income taxes - 2,316,000  Income tax expense - 3,000  Income from discontinued operations $ - $ 2,313,000  

Cash Equivalents and Investme_2

Cash Equivalents and Investments (Tables)	3 Months Ended
	Mar. 31, 2021
Cash Equivalents and Investments [Abstract]
Schedule of Cash Equivalents and Available-for-Sale Securities	   March 31, 2021  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 11,530,000 $ - $ - $ 11,530,000 $ 11,530,000 $ - $ -  Subtotal 11,530,000 - - 11,530,000 11,530,000 - -   Investments:  Corporate Notes/Bonds 6,257,000 - (3,000) 6,254,000 - 693,000 5,561,000  Convertible Debt 605,000 - - 605,000 - - 605,000  Subtotal 6,862,000 - (3,000) 6,859,000 - 693,000 6,166,000    Total $ 18,392,000 $ - $ (3,000) $ 18,389,000 $ 11,530,000 $ 693,000 $ 6,166,000         December 31, 2020  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 9,424,000 $ - $ - $ 9,424,000 $ 9,424,000 $ - $ -  Subtotal 9,424,000 - - 9,424,000 9,424,000 - -   Investments:  Commercial Paper 700,000 - - 700,000 - 700,000 -  Corporate Notes/Bonds 7,658,000 7,000 (1,000) 7,664,000 - 2,059,000 5,605,000  Convertible Debt 605,000 - - 605,000 - - 605,000  Subtotal 8,963,000 7,000 (1,000) 8,969,000 - 2,759,000 6,210,000    Total $ 18,387,000 $ 7,000 $ (1,000) $ 18,393,000 $ 9,424,000 $ 2,759,000 $ 6,210,000 
Schedule of Estimated Fair Value of Available-for-Sale Securities	   Amortized Cost Estimated Market Value   Due within one year $ 693,000 $ 693,000  Due after one year through five years 6,169,000 6,166,000  $ 6,862,000 $ 6,859,000 

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2021
Stock-Based Compensation [Abstract]
Schedule of Changes in Number of Outstanding Stock Options Under Director Plan, Stock Plan and 2011 Incentive Plan	   Weighted average  Weighted average remaining  exercise price contractual term  Options per share in years  Outstanding – December 31, 2020 1,173,190 $ 6.52 3.35  Awarded - -  Exercised - -  Forfeited (59,365) 12.97  Outstanding – March 31, 2021 1,113,825 6.18 3.27   Exercisable at March 31, 2021 885,855 $ 6.55 2.61  Expected to vest March 31, 2021 1,113,825 6.18 3.27 
Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan	   Weighted Average  Grant Date  Shares Fair Value  Outstanding – December 31, 2020 272,695 $ 3.91  Granted - -  Vested (68,959) 3.07  Forfeited (78,109) 3.56  Outstanding – March 31, 2021 125,627 4.58 

Inventories (Tables)

Inventories (Tables)	3 Months Ended
	Mar. 31, 2021
Inventories [Abstract]
Schedule of Inventories	   March 31 December 31  2021 2020  Finished goods $ 7,462,000 $ 7,871,000  Raw and processed materials 757,000 826,000  $ 8,219,000 $ 8,697,000 

Business Combinations (Tables)

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Schedule Of Assets Acquired And Liabilities Assumed	   May 14, 2020   Current assets $ 1,101,000  Property, plant, and equipment 127,000  Other long-term assets 421,000  Intangible assets 2,260,000  Goodwill 1,341,000  Total assets 5,250,000   Total liabilities 608,000   Net assets acquired $ 4,642,000  

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Goodwill and Intangible Assets [Abstract]
Schedule of Changes in Carrying Amount of Goodwill	   Ecessa IVDesk Total   January 1, 2020 $ - $ - $ -   Acquisition 1,341,000 745,000 2,086,000   December 31, 2020 $ 1,341,000 $ 745,000 $ 2,086,000   March 31, 2021 $ 1,341,000 $ 745,000 $ 2,086,000   Gross goodwill 1,341,000 745,000 2,086,000  Accumulated impairment loss - - -  Balance at March 31, 2021 $ 1,341,000 $ 745,000 $ 2,086,000 
Schedule of Finite-Lived Intangible Assets	   March 31, 2021  Gross Carrying Amount Accumulated Amortization Net   Trade Name/Trademark/Internet Domain Assets $ 101,000 $ (7,000) $ 94,000  Non-compete Agreements 80,000 (22,000) 58,000  Customer Relationships 1,010,000 (86,000) 924,000  Internally Developed Software 1,800,000 (214,000) 1,586,000  $ 2,991,000 $ (329,000) $ 2,662,000      December 31, 2020  Gross Carrying Amount Accumulated Amortization Net   Trade Name/Trademark/Internet Domain Assets $ 90,000 $ (5,000) $ 85,000  Non-compete Agreements 80,000 (16,000) 64,000  Customer Relationships 1,010,000 (34,000) 976,000  Internally Developed Software 1,800,000 (150,000) 1,650,000  $ 2,980,000 $ (205,000) $ 2,775,000 
Schedule of Estimated Future Amortization Expense	   Year Ending December 31:  Q2 - Q4 2021 $ 264,000  2022 352,000  2023 336,000  2024 325,000  2025 292,000  Thereafter 410,000 

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2021
Segment Information [Abstract]
Schedule of Segment Information	    Electronics & Services & Intersegment  Software Support Other Eliminations Total  Three Months Ended March 31, 2021  Sales $ 8,365,000 $ 1,938,000 $ - $ (144,000) $ 10,159,000  Cost of sales 4,781,000 1,162,000 - - 5,943,000  Gross profit 3,584,000 776,000 - (144,000) 4,216,000  Selling, general and  administrative expenses 3,608,000 979,000 777,000 (144,000) 5,220,000  Acquisition-related costs - - 1,143,000 - 1,143,000  Operating loss (24,000) (203,000) (1,920,000) - (2,147,000)  Other (expense) income (19,000) - 6,000 - (13,000)  Loss before income tax $ (43,000) $ (203,000) $ (1,914,000) $ - $ (2,160,000)   Depreciation and amortization $ 68,000 $ 154,000 $ 38,000 $ - $ 260,000   Capital expenditures $ 4,000 $ 5,000 $ - $ - $ 9,000   Assets $ 14,571,000 $ 7,950,000 $ 30,614,000 $ (27,000) $ 53,108,000       Electronics & Services & Intersegment  Software Support Other Eliminations Total  Three Months Ended March 31, 2020  Sales $ 8,536,000 $ 827,000 $ - $ (200,000) $ 9,163,000  Cost of sales 4,807,000 620,000 - (1,000) 5,426,000  Gross profit 3,729,000 207,000 - (199,000) 3,737,000  Selling, general and  administrative expenses 3,897,000 328,000 935,000 (199,000) 4,961,000  Operating loss (168,000) (121,000) (935,000) - (1,224,000)  Other income 14,000 - 397,000 - 411,000  Loss before income tax $ (154,000) $ (121,000) $ (538,000) $ - $ (813,000)   Depreciation and amortization $ 71,000 $ 13,000 $ 127,000 $ - $ 211,000   Capital expenditures $ 43,000 $ - $ 13,000 $ - $ 56,000   Assets $ 15,665,000 $ 1,394,000 $ 39,807,000 $ (27,000) $ 56,839,000                 

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Measurements [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	   March 31, 2021   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 11,530,000 $ - $ - $ 11,530,000  Subtotal 11,530,000 - - 11,530,000   Short-term investments:  Corporate Notes/Bonds - 693,000 - 693,000  Subtotal - 693,000 - 693,000   Long-term investments:  Corporate Notes/Bonds - 5,561,000 - 5,561,000  Convertible debt - - 605,000 605,000  Subtotal - 5,561,000 605,000 6,166,000   Total $ 11,530,000 $ 6,254,000 $ 605,000 $ 18,389,000      December 31, 2020   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 9,424,000 $ - $ - $ 9,424,000  Subtotal 9,424,000 - - 9,424,000   Short-term investments:  Commercial Paper - 700,000 - 700,000  Corporate Notes/Bonds - 2,059,000 - 2,059,000  Subtotal - 2,759,000 - 2,759,000   Long-term investments:  Corporate Notes/Bonds - 5,605,000 - 5,605,000  Convertible debt - - 605,000 605,000  Subtotal - 5,605,000 605,000 6,210,000   Current Liabilities:  Contingent Consideration - - (550,000) (550,000)  Subtotal - - (550,000) (550,000)   Total $ 9,424,000 $ 8,364,000 $ 55,000 $ 17,843,000 

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021segment
Summary of Significant Accounting Policies [Abstract]
Number of segments	2

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details)	3 Months Ended
	Mar. 31, 2021USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 47,494,727
Ending balance	45,721,931
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(700,000)
Net current period change	20,000
Ending balance	(680,000)
Unrealized gain (loss) on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	21,000
Net current period change	(9,000)
Ending balance	12,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(678,767)
Net current period change	11,000
Ending balance	$ (668,335)

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021segment
Revenue Recognition [Abstract]
Number of segments	2

Revenue Recognition (Schedule o

Revenue Recognition (Schedule of Disaggregation of Revenues) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 10,159,315	$ 9,162,742
Electronics & Software Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,365,000	8,536,000
Electronics & Software Segment [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenues	7,201,000	7,448,000
Electronics & Software Segment [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,164,000	1,088,000
Electronics & Software Segment [Member] | Intelligent Edge Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,713,000	3,354,000
Electronics & Software Segment [Member] | Traditional Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,652,000	5,182,000
Services & Support Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,938,000	827,000
Services & Support Segment [Member] | Financial [Member]
Disaggregation of Revenue [Line Items]
Revenues	424,000	94,000
Services & Support Segment [Member] | Healthcare [Member]
Disaggregation of Revenue [Line Items]
Revenues	253,000	190,000
Services & Support Segment [Member] | Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	63,000	93,000
Services & Support Segment [Member] | Other Commercial Clients [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,054,000	250,000
Services & Support Segment [Member] | CSI IT Operations [Member]
Disaggregation of Revenue [Line Items]
Revenues	144,000	200,000
Services & Support Segment [Member] | Project & Product [Member]
Disaggregation of Revenue [Line Items]
Revenues	385,000	141,000
Services & Support Segment [Member] | Services & Support [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,553,000	$ 686,000

Discontinued Operations (Narrat

Discontinued Operations (Narrative) (Details)	Mar. 11, 2020USD ($)item	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale				$ 8,900,000
Gain on sale of business line				$ 2,247,000
Number of buildings leased to purchaser | item	2
Restructuring expense		$ 0	$ 320,000
Restructuring payments		186,000
Restructuring accrual		$ 66,000
Remainder of Suttle Business Lines [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale	$ 8,000,000
Working capital adjustment, period after close	90 days
Minimum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Base rents	$ 6,970
Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Base rents	$ 7,180

Discontinued Operations (Schedu

Discontinued Operations (Schedule of Financial Results of Discontinued Operations) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Discontinued Operations [Abstract]
Sales		$ 3,025,000
Cost of sales		2,050,000
Selling, general and administrative expenses		500,000
Restructuring expenses		320,000
Gain on sale of assets		(2,161,000)
Operating income before income taxes		2,316,000
Income tax expense		3,000
Income (loss) from discontinued operations		$ 2,313,352

Cash Equivalents and Investme_3

Cash Equivalents and Investments (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended
	Apr. 30, 2020	Mar. 31, 2021	Mar. 31, 2020
Debt and Equity Securities, FV-NI [Line Items]
Gross realized gains (losses)		$ 0	$ 0
Common Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Investment	$ 899,000
Maximum [Member] | Common Stock [Member]
Debt and Equity Securities, FV-NI [Line Items]
Minority investment, ownership percentage	10.00%

Cash Equivalents and Investme_4

Cash Equivalents and Investments (Schedule of Cash Equivalents and Available-for-Sale Securities) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 18,392,000	$ 18,387,000
Gross Unrealized Gains		7,000
Gross Unrealized Losses	(3,000)	(1,000)
Fair Value	18,389,000	18,393,000
Cash Equivalents	11,530,000	9,424,000
Short-Term Investments	693,424	2,759,024
Long-Term Investments	6,166,000	6,210,000
Cash Equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,530,000	9,424,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	11,530,000	9,424,000
Cash Equivalents	11,530,000	9,424,000
Short-Term Investments
Long-Term Investments
Cash Equivalents [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,530,000	9,424,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	11,530,000	9,424,000
Cash Equivalents	11,530,000	9,424,000
Short-Term Investments
Long-Term Investments
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,862,000	8,963,000
Gross Unrealized Gains		7,000
Gross Unrealized Losses	(3,000)	(1,000)
Fair Value	6,859,000	8,969,000
Cash Equivalents
Short-Term Investments	693,000	2,759,000
Long-Term Investments	6,166,000	6,210,000
Investments [Member] | Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		700,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value		700,000
Cash Equivalents
Short-Term Investments		700,000
Long-Term Investments
Investments [Member] | Corporate Notes/Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,257,000	7,658,000
Gross Unrealized Gains		7,000
Gross Unrealized Losses	(3,000)	(1,000)
Fair Value	6,254,000	7,664,000
Cash Equivalents
Short-Term Investments	693,000	2,059,000
Long-Term Investments	5,561,000	5,605,000
Investments [Member] | Convertible Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	605,000	605,000
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	605,000	605,000
Cash Equivalents
Short-Term Investments
Long-Term Investments	$ 605,000	$ 605,000

Cash Equivalents and Investme_5

Cash Equivalents and Investments (Schedule of Estimated Fair Value of Available-for-Sale Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Estimated Market Value	$ 18,389	$ 18,393
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost, Due within one year	693
Amortized Cost, Due after one year through five years	6,169
Amortized Cost	6,862
Estimated Market Value, Due within one year	693
Estimated Market Value, Due after one year through five years	6,166
Estimated Market Value	$ 6,859	$ 8,969

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding	1,113,825		1,173,190
Aggregate intrinsic value of options outstanding	$ 1,215,000
Intrinsic value of all options exercised	0
Net cash proceeds from exercise of stock options	0	$ 0
Share based compensation expense before income taxes	142,000	79,000
Share based compensation expense after income taxes	112,000	$ 63,000
Unrecognized compensation expense for awards	$ 424,000
Recognition period for unrecognized compensation expense	2 years 2 months 12 days
2011 Executive Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of awards authorized				2,500,000
Shares issued under Plan	499,991
Number of options outstanding	1,239,452
Awards eligible for grant	760,557
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of price of common stock at which employees are able to acquire	85.00%
Shares available	63,196
ESOP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Requisite service period	1 year
Initial award vesting period	2 years
Award vesting period	6 years
ESOP contributions	$ 329,968
Shares of ESOP allocated to accounts of eligible employees	72,203
ESOP [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage	20.00%

Stock-Based Compensation (Sched

Stock-Based Compensation (Schedule of Changes in Number of Outstanding Stock Options Under Director Plan, Stock Plan and 2011 Incentive Plan) (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Stock-Based Compensation [Abstract]
Options, Outstanding - December 31, 2020	1,173,190
Options, Awarded
Options, Exercised
Options, Forfeited	(59,365)
Options, Outstanding - March 31, 2021	1,113,825	1,173,190
Options, Exercisable at March 31, 2021	885,855
Options, Expected to vest March 31, 2021	1,113,825
Weighted average exercise price per share, Outstanding - December 31, 2020	$ 6.52
Weighted average exercise price per share, Awarded
Weighted average exercise price per share, Exercised
Weighted average exercise price per share, Forfeited	12.97
Weighted average exercise price per share, Outstanding - March 31, 2021	6.18	$ 6.52
Weighted average exercise price per share, Exercisable at March 31, 2021	6.55
Weighted average exercise price per share, Expected to vest March 31, 2021	$ 6.18
Options, Outstanding - Weighted average remaining contractual term in years	3 years 3 months 7 days	3 years 4 months 6 days
Options, Exercisable - Weighted average remaining contractual term in years	2 years 7 months 10 days
Options, Expected to vest - Weighted average remaining contractual term in years	3 years 3 months 7 days

Stock-Based Compensation (Sch_2

Stock-Based Compensation (Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan) (Details) - Performance Units [Member]	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding - December 31, 2020 | shares	272,695
Shares, Vested | shares	(68,959)
Shares, Forfeited | shares	(78,109)
Shares, Outstanding - March 31, 2021 | shares	125,627
Weighted Average Grant Date Fair Value, Outstanding - December 31, 2020 | $ / shares	$ 3.91
Weighted Average Grant Date Fair Value, Vested | $ / shares	3.07
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	3.56
Weighted Average Grant Date Fair Value, Outstanding - March 31, 2021 | $ / shares	$ 4.58

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Inventories [Abstract]
Finished goods	$ 7,462,000	$ 7,871,000
Raw and processed materials	757,000	826,000
Inventories	$ 8,218,822	$ 8,696,880

Business Combinations (Narrativ

Business Combinations (Narrative) (Details)	Nov. 03, 2020USD ($)	May 14, 2020USD ($)item	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Business Acquisition [Line Items]
Intangibles amortization			$ 124,000	$ 0
Goodwill			$ 2,086,393		$ 2,086,393
Ecessa Corporation [Member]
Business Acquisition [Line Items]
Ownership acquired		100.00%
Number of field installations | item		10,000
Total purchase price of acquired entity		$ 4,642,000
Cash acquired in acquisition		666,000
Business acquisition, initial cash consideration paid		4,666,000
Business acquisition, working capital adjustment		(24,000)
Weighted average amortization period of acquired intangible assets			7 years
Total assets		5,250,000
Property, plant and equipment		127,000
Goodwill		1,341,000	$ 1,341,000		1,341,000
Intangible assets		2,260,000
Total liabilities		$ 608,000
IVDesk Minnesota, Inc. [Member]
Business Acquisition [Line Items]
Total purchase price of acquired entity	$ 1,368,000
Business acquisition, initial cash consideration paid	950,000
Business acquisition, working capital adjustment	(132,000)
Contingent consideration at fair value	550,000
Contingent consideration, maximum amount	$ 550,000
Contingent consideration period	120 days
Business acquisition, liabliites arising from contingencies			0
Total assets	$ 1,500,000
Property, plant and equipment	35,000
Goodwill	745,000		$ 745,000		$ 745,000
Intangible assets	720,000
Total liabilities	$ 132,000
IVDesk Minnesota, Inc. [Member] | Customer Relationships [Member] | Weighted Average [Member]
Business Acquisition [Line Items]
Amortization period	8 years

Business Combinations (Schedule

Business Combinations (Schedule Of Assets Acquired And Liabilities Assumed) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	May 14, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	$ 2,086,393	$ 2,086,393
Ecessa Corporation [Member]
Business Acquisition [Line Items]
Current assets			$ 1,101,000
Property, plant and equipment			127,000
Other long-term assets			421,000
Intangible assets			2,260,000
Goodwill	$ 1,341,000	$ 1,341,000	1,341,000
Total assets			5,250,000
Total liabilities			608,000
Net assets acquired			$ 4,642,000

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Nov. 03, 2020	Dec. 31, 2019
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 2,086,393		$ 2,086,393
Amortization expense	124,000	$ 0
IVDesk Minnesota, Inc. [Member]
Goodwill And Intangible Assets [Line Items]
Goodwill	$ 745,000		$ 745,000	$ 745,000
Intangible assets				$ 720,000

Goodwill And Intangible Asset_3

Goodwill And Intangible Assets (Schedule of Changes in Carrying Amount of Goodwill) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Mar. 31, 2021	Nov. 03, 2020	May 14, 2020
Goodwill [Roll Forward]
January 1, 2020
Acquisition	2,086,000
Ending Balance	2,086,393
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]
Gross goodwill		$ 2,086,000
Accumulated impairment loss
Balance at March 31, 2021	2,086,393	2,086,393
Ecessa Corporation [Member]
Goodwill [Roll Forward]
January 1, 2020
Acquisition	1,341,000
Ending Balance	1,341,000
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]
Gross goodwill		1,341,000
Accumulated impairment loss
Balance at March 31, 2021	1,341,000	1,341,000		$ 1,341,000
IVDesk Minnesota, Inc. [Member]
Goodwill [Roll Forward]
January 1, 2020
Acquisition	745,000
Ending Balance	745,000
Goodwill, Impaired, Accumulated Impairment Loss [Abstract]
Gross goodwill		745,000
Accumulated impairment loss
Balance at March 31, 2021	$ 745,000	$ 745,000	$ 745,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,991,000	$ 2,980,000
Accumulated Amortization	(329,000)	(205,000)
Net	2,662,000	2,775,000
Trade Name/Trademark/Internet Domain Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	101,000	90,000
Accumulated Amortization	(7,000)	(5,000)
Net	94,000	85,000
Non-compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	80,000	80,000
Accumulated Amortization	(22,000)	(16,000)
Net	58,000	64,000
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,010,000	1,010,000
Accumulated Amortization	(86,000)	(34,000)
Net	924,000	976,000
Internally Developed Software [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,800,000	1,800,000
Accumulated Amortization	(214,000)	(150,000)
Net	$ 1,586,000	$ 1,650,000

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets (Schedule of Estimated Future Amortization Expense) (Details)	Mar. 31, 2021USD ($)
Goodwill and Intangible Assets [Abstract]
Q2 - Q4 2021	$ 264,000
2022	352,000
2023	336,000
2024	325,000
2025	292,000
Thereafter	$ 410,000

Debt (Narrative) (Details)

Debt (Narrative) (Details)	Oct. 29, 2020USD ($)item	Mar. 31, 2021USD ($)	Aug. 28, 2020USD ($)
Line of Credit [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity			$ 5,000,000
Line of credit, amount outstanding		$ 0
Line of credit, remaining borrowing capacity		$ 2,101,000
Line of credit facility, interest rate at period end		2.00%
Line of credit, expiration date		Aug. 28, 2021
Line of Credit [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Line of credit, basis spread on variable rate		1.25%
Letter of Credit [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 2,000,000
Minimum [Member] | Line of Credit [Member]
Debt Instrument [Line Items]
Ability to obtain letter of credit, number of letters of credit | item	1
Minimum [Member] | Line of Credit [Member] | LIBOR [Member]
Debt Instrument [Line Items]
Line of credit, basis spread on variable rate		0.75%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Taxes [Line Items]
Uncertain tax benefit positions that would reduce the effective income tax rate if recognized	$ 116,000
Effective tax rate	(0.10%)	0.50%
Federal tax rate	21.00%
Foreign net operating loss carry-forwards and credits	$ 0
Increase (decrease) in income tax rate due to the effect of foreign operations	(0.50%)
Uncertain tax positions	$ 0
Domestic Tax Authority [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2017
Domestic Tax Authority [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2020
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2016
State and Local Jurisdiction [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2020
Foreign Tax Authority [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2017
Foreign Tax Authority [Member] | Latest Tax Year [Member]
Income Taxes [Line Items]
Open tax year	2020

Segment Information (Narrative)

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2021segment
Segment Information [Abstract]
Number of segments	2

Segment Information (Schedule o

Segment Information (Schedule of Segment Information) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Sales	$ 10,159,315	$ 9,162,742
Cost of sales	5,942,677	5,425,595
Gross profit	4,216,638	3,737,147
Selling, general and administrative expenses	5,219,731	4,960,890
Acquisition-related costs	1,143,423
Operating loss from continuing operations	(2,146,516)	(1,223,743)
Other (expense) income	(13,132)	410,567
Operating loss from continuing operations before income taxes	(2,159,648)	(813,176)
Depreciation and amortization	260,321	211,461
Capital expenditures	9,000	56,000
Assets	53,108,238	56,839,000	$ 55,556,325
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales	(144,000)	(200,000)
Cost of sales		(1,000)
Gross profit	(144,000)	(199,000)
Selling, general and administrative expenses	(144,000)	(199,000)
Depreciation and amortization
Capital expenditures
Assets	(27,000)	(27,000)
Electronics & Software Segment [Member]
Segment Reporting Information [Line Items]
Sales	8,365,000	8,536,000
Cost of sales	4,781,000	4,807,000
Gross profit	3,584,000	3,729,000
Selling, general and administrative expenses	3,608,000	3,897,000
Operating loss from continuing operations	(24,000)	(168,000)
Other (expense) income	(19,000)	14,000
Operating loss from continuing operations before income taxes	(43,000)	(154,000)
Depreciation and amortization	68,000	71,000
Capital expenditures	4,000	43,000
Assets	14,571,000	15,665,000
Services & Support Segment [Member]
Segment Reporting Information [Line Items]
Sales	1,938,000	827,000
Cost of sales	1,162,000	620,000
Gross profit	776,000	207,000
Selling, general and administrative expenses	979,000	328,000
Operating loss from continuing operations	(203,000)	(121,000)
Operating loss from continuing operations before income taxes	(203,000)	(121,000)
Depreciation and amortization	154,000	13,000
Capital expenditures	5,000
Assets	7,950,000	1,394,000
Other [Member]
Segment Reporting Information [Line Items]
Sales
Cost of sales
Gross profit
Selling, general and administrative expenses	777,000	935,000
Acquisition-related costs	1,143,000
Operating loss from continuing operations	(1,920,000)	(935,000)
Other (expense) income	6,000	397,000
Operating loss from continuing operations before income taxes	(1,914,000)	(538,000)
Depreciation and amortization	38,000	127,000
Capital expenditures		13,000
Assets	$ 30,614,000	$ 39,807,000

Net Income (Loss) Per Share (Na

Net Income (Loss) Per Share (Narrative) (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Stock Compensation Plan [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of outstanding stock options and shares associated with long-term incentive compensation plans	0	179,709
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Dilutive effect of outstanding stock options and shares associated with long-term incentive compensation plans	0
Shares not included in the computation of diluted earnings per share	485,108	632,114
Performance Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares not included in the computation of diluted earnings per share	0	117,688

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of accrued consideration		$ 550,000
Transfers between levels	$ 0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of accrued consideration		550,000
Contingent Consideration [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of accrued consideration		550,000
Contingent Consideration [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of accrued consideration		$ 550,000

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 11,530,000	$ 9,424,000
Short-term investments	693,000	2,759,000
Long-term investments	6,166,000	6,210,000
Current Liabilities		(550,000)
Total	18,389,000	17,843,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	11,530,000	9,424,000
Total	11,530,000	9,424,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	693,000	2,759,000
Long-term investments	5,561,000	5,605,000
Total	6,254,000	8,364,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	605,000	605,000
Current Liabilities		(550,000)
Total	605,000	55,000
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	11,530,000	9,424,000
Money Market Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	11,530,000	9,424,000
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		700,000
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments		700,000
Corporate Notes/Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	693,000	2,059,000
Long-term investments	5,561,000	5,605,000
Corporate Notes/Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term investments	693,000	2,059,000
Long-term investments	5,561,000	5,605,000
Convertible Debt [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	605,000	605,000
Convertible Debt [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term investments	$ 605,000	605,000
Contingent Consideration [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current Liabilities		(550,000)
Contingent Consideration [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Current Liabilities		$ (550,000)

Subsequent Events (Narrative) (

Subsequent Events (Narrative) (Details) - Lantronix, Inc. [Member] - Subsequent Event [Member]	Apr. 28, 2021USD ($)
Subsequent Events [Line Items]
Total purchase price of acquired entity	$ 32,027,566
Business acquisition, initial cash consideration paid	25,027,566
Maximum [Member]
Subsequent Events [Line Items]
Earnout payments	$ 7,000,000