SUNation Energy (SUNE) 10-Q 2 Aug 19 2019 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 01, 2019
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2019
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2019
Entity Registrant Name	COMMUNICATIONS SYSTEMS INC
Entity Central Index Key	0000022701
Current Fiscal Year End Date	--12-31
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
Title of 12(b) Security	Common Stock, par value , $.05 per share
Trading Symbol	JCS
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		9,324,785

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents	$ 13,152,452	$ 11,056,426
Restricted cash	625,664
Investments	4,000,974
Trade accounts receivable, less allowance for doubtful accounts of $153,000 and $136,000, respectively	10,907,395	13,401,042
Inventories	13,648,913	16,175,616
Prepaid income taxes	62,147	148,036
Other current assets	1,628,792	1,553,972
TOTAL CURRENT ASSETS	44,026,337	42,335,092
PROPERTY, PLANT AND EQUIPMENT, net	9,607,354	10,962,239
OTHER ASSETS:
Deferred income taxes	19,068	19,068
Operating lease right of use asset	422,935
Other assets, net		4,765
TOTAL OTHER ASSETS	442,003	23,833
TOTAL ASSETS	54,075,694	53,321,164
CURRENT LIABILITIES:
Accounts payable	3,522,386	5,394,981
Accrued compensation and benefits	2,084,272	2,892,199
Operating lease liability	94,316
Other accrued liabilities	3,015,352	3,168,049
Dividends payable	193,294	184,541
TOTAL CURRENT LIABILITIES	8,909,620	11,639,770
LONG TERM LIABILITIES:
Long-term compensation plans	78,941
Uncertain tax positions		28,267
Operating lease liability	313,690
TOTAL LONG-TERM LIABILITIES	392,631	28,267
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; 9,316,576 and 9,158,438 shares issued and outstanding, respectively	465,829	457,922
Additional paid-in capital	43,176,179	42,680,499
Retained earnings (accumulated deficit)	1,901,373	(734,001)
Accumulated other comprehensive loss	(769,938)	(751,293)
TOTAL STOCKHOLDERS' EQUITY	44,773,443	41,653,127
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 54,075,694	$ 53,321,164

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Condensed Consolidated Balance Sheets [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 153	$ 136
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	9,316,576	9,158,438
Common stock, shares outstanding	9,316,576	9,158,438

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss) [Abstract]
Sales	$ 15,400,076	$ 15,038,159	$ 32,123,370	$ 31,811,844
Cost of sales	9,692,074	11,053,074	19,988,403	22,648,140
Gross profit	5,708,002	3,985,085	12,134,967	9,163,704
Operating expenses:
Selling, general and administrative expenses	5,972,100	6,707,289	12,218,430	13,860,128
Total operating expenses	5,972,100	6,707,289	12,218,430	13,860,128
Operating loss	(264,098)	(2,722,204)	(83,463)	(4,696,424)
Other income (expenses):
Investment and other income	76,742	89,131	121,632	193,252
Gain (loss) on sale of assets	9,660	(10,480)	8,725	17,051
Gain on sale of FutureLink Fiber business line	2,966,906		2,966,906
Interest and other expense	(9,594)	(9,482)	(19,038)	(19,188)
Other income, net	3,043,714	69,169	3,078,225	191,115
Income (Loss) from operations before income taxes	2,779,616	(2,653,035)	2,994,762	(4,505,309)
Income tax expense (benefit)	6,438	(11,525)	(18,529)	(3,955)
Net income (loss)	2,773,178	(2,641,510)	3,013,291	(4,501,354)
Other comprehensive income (loss), net of tax:
Unrealized loss (gain) on available-for-sale securities	403	4,433	403	(1,998)
Foreign currency translation adjustment	(47,666)	(104,998)	(19,048)	(70,905)
Total other comprehensive loss	(47,263)	(100,565)	(18,645)	(72,903)
Comprehensive income (loss)	$ 2,725,915	$ (2,742,075)	$ 2,994,646	$ (4,574,257)
Basic net income (loss) per share:	$ 0.30	$ (0.29)	$ 0.33	$ (0.50)
Diluted net income (loss) per share:	$ 0.30	$ (0.29)	$ 0.33	$ (0.50)
Weighted Average Basic Shares Outstanding	9,316,576	9,132,855	9,246,233	9,066,886
Weighted Average Dilutive Shares Outstanding	9,319,106	9,132,855	9,246,233	9,066,886
Dividends declared per share	$ 0.02	$ 0.04	$ 0.04	$ 0.08

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
BALANCE at Dec. 31, 2017	$ 448,685	$ 42,006,750	$ 7,328,671	$ (613,379)	$ 49,170,727
BALANCE, Shares at Dec. 31, 2017	8,973,708
Net income (loss)			(4,501,354)		(4,501,354)
Issuance of common stock under Employee Stock Purchase Plan	$ 691	49,758			50,449
Issuance of common stock under Employee Stock Purchase Plan, Shares	13,825
Issuance of common stock to Employee Stock Ownership Plan	$ 5,982	419,908			425,890
Issuance of common stock to Employee Stock Ownership Plan, Shares	119,632
Issuance of common stock under Executive Stock Plan	$ 2,175				2,175
Issuance of common stock under Executive Stock Plan, Shares	43,501
Share based compensation		109,783			109,783
Other share retirements	$ (401)	(37,387)	9,325		(28,463)
Other share retirements, Shares	(8,017)
Shareholder dividends			(732,228)		(732,228)
Other comprehensive loss				(72,903)	(72,903)
BALANCE at Jun. 30, 2018	$ 457,132	42,548,812	2,104,414	(686,282)	44,424,076
BALANCE, Shares at Jun. 30, 2018	9,142,649
BALANCE at Mar. 31, 2018	$ 456,149	42,501,770	5,113,019	(585,717)	47,485,221
BALANCE, Shares at Mar. 31, 2018	9,122,986
Net income (loss)			(2,641,510)		(2,641,510)
Issuance of common stock under Employee Stock Purchase Plan	$ 293	21,836			22,129
Issuance of common stock under Employee Stock Purchase Plan, Shares	5,870
Issuance of common stock under Executive Stock Plan	$ 690				690
Issuance of common stock under Executive Stock Plan, Shares	13,793
Share based compensation		25,206			25,206
Shareholder dividends			(367,095)		(367,095)
Other comprehensive loss				(100,565)	(100,565)
BALANCE at Jun. 30, 2018	$ 457,132	42,548,812	2,104,414	(686,282)	44,424,076
BALANCE, Shares at Jun. 30, 2018	9,142,649
BALANCE at Dec. 31, 2018	$ 457,922	42,680,499	(734,001)	(751,293)	41,653,127
BALANCE, Shares at Dec. 31, 2018	9,158,438
Net income (loss)			3,013,291		3,013,291
Issuance of common stock under Employee Stock Purchase Plan	$ 1,074	47,520			48,594
Issuance of common stock under Employee Stock Purchase Plan, Shares	21,477
Issuance of common stock to Employee Stock Ownership Plan	$ 6,641	262,995			269,636
Issuance of common stock to Employee Stock Ownership Plan, Shares	132,826
Issuance of common stock under Executive Stock Plan	$ 229				229
Issuance of common stock under Executive Stock Plan, Shares	4,575
Share based compensation		188,587			188,587
Other share retirements	$ (37)	(3,422)	1,494		(1,965)
Other share retirements, Shares	(740)
Shareholder dividends			(379,411)		(379,411)
Other comprehensive loss				(18,645)	(18,645)
BALANCE at Jun. 30, 2019	$ 465,829	43,176,179	1,901,373	(769,938)	44,773,443
BALANCE, Shares at Jun. 30, 2019	9,316,576
BALANCE at Mar. 31, 2019	$ 465,426	43,036,333	(677,819)	(722,675)	42,101,265
BALANCE, Shares at Mar. 31, 2019	9,308,520
Net income (loss)			2,773,178		2,773,178
Issuance of common stock under Employee Stock Purchase Plan	$ 403	20,946			21,349
Issuance of common stock under Employee Stock Purchase Plan, Shares	8,056
Share based compensation		118,900			118,900
Shareholder dividends			(193,986)		(193,986)
Other comprehensive loss				(47,263)	(47,263)
BALANCE at Jun. 30, 2019	$ 465,829	$ 43,176,179	$ 1,901,373	$ (769,938)	$ 44,773,443
BALANCE, Shares at Jun. 30, 2019	9,316,576

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Condensed Consolidated Statements of Changes in Stockholders' Equity [Abstract]
Shareholder dividends per share	$ 0.02	$ 0.04	$ 0.04	$ 0.08

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 3,013,291	$ (4,501,354)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	755,101	1,172,556
Share based compensation	188,587	109,783
Gain on sale of FutureLink Fiber business line	(2,966,906)
Loss on equipment disposal	(8,725)	(17,051)
Changes in assets and liabilities:
Trade accounts receivable	2,488,128	669,937
Inventories	1,486,916	(1,604,564)
Prepaid income taxes	86,709	34,012
Other assets, net	(80,145)	(439,897)
Accounts payable	(1,907,800)	788,435
Accrued compensation and benefits	(459,520)	106,896
Other accrued liabilities	(167,070)	1,204,309
Income taxes payable	(28,267)	(4,065)
Net cash provided by (used in) operating activities	2,400,299	(2,481,003)
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(259,497)	(612,273)
Purchases of investments	(4,000,571)	(3,488,793)
Proceeds from the sale of FutureLink Fiber business line	4,857,214
Proceeds from the sale of property, plant and equipment	59,639	39,263
Proceeds from the sale of investments		2,921,913
Net cash provided by (used in) investing activities	656,785	(1,139,890)
CASH FLOWS FROM FINANCING ACTIVITIES:
Cash dividends paid	(370,658)	(761,157)
Proceeds from issuance of common stock, net of shares withheld	46,858	24,161
Net cash used in financing activities	(323,800)	(736,996)
EFFECT OF FOREIGN EXCHANGE RATE CHANGES ON CASH	(11,594)	(29,470)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	2,721,690	(4,387,359)
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT BEGINNING OF PERIOD	11,056,426	12,453,663
CASH, CASH EQUIVALENTS, AND RESTRICTED CASH AT END OF PERIOD	13,778,116	8,066,304
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Income taxes refunded	(76,151)	(33,902)
Interest paid	18,939	18,969
Dividends declared not paid	193,294	368,222
Capital expenditures in accounts payable	39,129	$ 21,310
Operating right of use assets obtained in exchange for lease obligations	$ 449,995

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2019
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 operates directly and through its subsidiaries located in the United States (U.S.) and the United Kingdom (U.K.). CSI is principally engaged through its Transition Networks, Inc. (“Transition Networks” or “Transition”) subsidiary and business unit in the manufacture and sale of core media conversion products, Ethernet switches, and other connectivity and data transmission products, and through its Suttle, Inc. (“Suttle”) subsidiary and business unit in the manufacture and sale of connectivity infrastructure products for broadband and voice communications. Through its JDL Technologies, Inc. (“JDL Technologies” or “JDL”) business unit, CSI provides technology solutions including virtualization, managed services, wired and wireless network design and implementation, and hybrid cloud infrastructure and deployment. Through its Net2Edge Limited (“Net2Edge”) U.K.-based business unit, the Company develops, manufactures and sells Ethernet-based edge network access products to telecommunications carriers.   The Company classifies its businesses into four segments corresponding to the Transition Networks, Suttle, JDL Technologies, and Net2Edge business units. 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 and condensed consolidated statement of changes in stockholders’ equity as of June 30, 2019 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 June 30, 2019 and 2018 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 June 30, 2019 and 2018 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, 2018 Annual Report to Shareholders on Form 10-K. The results of operations for the period ended June 30, 2019 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 Company's Annual Report on Form 10-K for the year ended December 31, 2018 , 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 on securities Accumulated Other Comprehensive Loss  December 31, 2018 $ (764,000) $ 13,000 $ (751,000)   Net current period change (20,000) 1,000 (19,000)   June 30, 2019 $ (784,000) $ 14,000 $ (770,000) 

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2019
Revenue Recognition [Abstract]
Revenue Recognition	NOTE 2 – REVENUE RECOGNITION  Transition Networks & Suttle, Inc.  The Company has determined that the revenue recognition for its Suttle and Transition Networks divisions 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.  JDL Technologies, Inc.  The Company has determined that the following performance obligations identified in its JDL Technologies, Inc. division are transferred over time: managed services and professional services (time and materials (“T&M”) and fixed price). JDL’s managed services performance obligation is a bundled solution, a series of distinct services that are substantially the same and that have the same pattern of transfer to the customer and are recognized evenly over the term of the contract. T&M professional services arrangements are measured over time with an input method based on hours expended towards satisfying this performance obligation. Fixed price professional service arrangements under a relatively longer-term service will also be measured over time with an input method based on hours expended.  The Company has also identified the following performance obligations within its JDL Technologies division that are recognized at a point in time which include resale of third-party hardware and software, installation, arranging for another party to transfer serv ices 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 as the Company has transferred control upon the service first being made 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.  Net2Edge Limited  The Company’s Net2Edge division manufactures and markets Ethernet based edge network access devices. The Company principally sells these products through approved partners and integrators outside the United States. The Company has determined that the performance obligation in the Net2Edge division is recognized at a point in time, upon the delivery of its connectivity infrastructure and data transmission products.  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 Transition Networks, we analyze revenue by region and product group, which is as follows for the three and six months ended June 30, 2019 and 2018:      Transition Networks Sales by Region  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  North America $ 8,052,000 $ 6,450,000 $ 14,963,000 $ 14,092,000  Rest of World 672,000 864,000 1,396,000 1,840,000  Europe, Middle East, Africa ("EMEA") 451,000 520,000 1,706,000 1,056,000  $ 9,175,000 $ 7,834,000 $ 18,065,000 $ 16,988,000        Transition Networks Sales by Product Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Media converters $ 4,683,000 $ 4,492,000 $ 10,061,000 $ 9,677,000  Ethernet switches and adapters 2,831,000 1,827,000 4,831,000 4,086,000  Other products 1,661,000 1,515,000 3,173,000 3,225,000  $ 9,175,000 $ 7,834,000 $ 18,065,000 $ 16,988,000   For Suttle, we analyze revenues by product and customer group, which is as follows for the three and six months ended June 30, 2019 and 2018 :     Suttle Sales by Product Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Structured cabling and connecting system products $ 3,766,000 $ 5,169,000 $ 8,843,000 $ 11,742,000  DSL and other products 981,000 704,000 1,425,000 1,104,000  $ 4,747,000 $ 5,873,000 $ 10,268,000 $ 12,846,000       Suttle Sales by Customer Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Communication service providers $ 3,367,000 $ 4,500,000 $ 7,958,000 $ 10,447,000  International 109,000 766,000 508,000 1,346,000  Distributors 568,000 607,000 1,099,000 1,053,000  Other 703,000 - 703,000 -  $ 4,747,000 $ 5,873,000 $ 10,268,000 $ 12,846,000   For JDL, we analyze revenue by customer group, which is as follows for the three and six months ended June 30, 2019 and 2018 :     JDL Revenue by Customer Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Education $ 295,000 $ 280,000 $ 1,768,000 $ 388,000  Healthcare and commercial clients 656,000 633,000 1,392,000 1,234,000  $ 951,000 $ 913,000 $ 3,160,000 $ 1,622,000    The Company does not currently analyze revenue for Net2Edge on a disaggregated basis. Revenues from Net2Edge were $ 796,000 and $ 681,000 for the three months ended June 30, 2019 and 2018 , respectively. Revenues were $ 1,244,000 and $ 846,000 for the six mo nths ended June 30, 2019 and 2018, respectively.

Leases

Leases	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Leases	NOTE 3 – LEASES  In February 2016, the Financial Accounting Standards Board (“FASB”) issued ASU No. 2016-02, Leases (ASC Topic 842), which is intended to improve financial reporting of leasing transactions by requiring organizations that lease assets to recognize assets and liabilities for the rights and obligations created by leases that extend more than twelve months on the balance sheet. This accounting update also requires additional disclosures surrounding the amount, timing, and uncertainty of cash flows arising from leases. This standard is effective for financial statements issued for annual and interim periods beginning after December 15, 2018 for public business entities.  The Company adopted this standard with a cumulative-effect adjustment as of January 1, 2019, the beginning of the period of adoption. The Company has elected the package of practical expedients permitted in ASC Topic 842. Adoption of the new standard resulted in the recording of right of use (“ROU”) assets and lease liabilities of approximately $ 280,000 and $ 259,000 , respectively as of January 1, 2019. ROU assets represent our right to use an underlying asset for the lease term, while lease liabilities represent our obligation to make lease payments arising from the lease. Lease ROU assets and liabilities are recognized at the commencement date of a lease based on the present value of lease payments over the lease term. Because the rate implicit in each individual lease is not readily determinable, the Company uses its incremental borrowing rate to determine the present value of the lease payments. Adoption of the standard did not materially impact the Company’s condensed consolidated balance sheets, consolidated statement of income (loss) and comprehensive income (loss) or condensed consolidated statements of cash flows.  The Company has entered into operating leases for two office locations, including one in February 2019. These leases have remaining lease terms of 5 to 8 years. One of the leases includes two options to extend the lease for 5 years each, and the other lease includes an option to terminate the lease in 2022 . One of the leases includes a 3% rent adjustment on each anniversary of the lease. As of June 30, 2019 , total ROU assets and operating lease liabilities were $ 423,000 and $ 408,000 , respectively. All operating lease expense is recognized on a straight-line basis over the lease term. In the three and six months ended June 30, 2019 , the Company recognized $ 32,000 and $ 61,000 in lease expense, respectively.  Information related to the Company’s ROU assets and related lease liabilities were as follows:     Three Months Ended June 30, 2019 Six Months Ended June 30, 2019   Cash paid for operating leases $ 33,000 $ 50,000  Right-of-use assets obtained in exchange for new operating lease obligations (1) - 450,000    As of June 30, 2019  Weighted-average remaining lease term 3.8 years  Weighted-average discount rate 4.5%  (1) Includes $262,000 for operating leases existing on January 1, 2019 and $188,000 for operating leases that commenced in the first quarter of 2019.  Maturities of lease liabilities as of June 30, 2019 were as follows:      Q3 - Q4 2019 $ 63,000  2020 124,000  2021 129,000  2022 88,000  2023 47,000  Thereafter 4,000  Total lease payments 455,000  Less imputed interest (47,000)  Total operating lease liabilities $ 408,000  Future minimum lease commitments under operating leases based on accounting standards applicable as of December 31, 2018 were as follows:     Year Ending December 31:  2019 $ 106,000  2020 86,000  2021 86,000  2022 50,000  $ 328,000   As of June 30, 2019 , the Company does not have any additional future operating lease obligations that have not yet commenced.

Cash Equivalents and Investment

Cash Equivalents and Investments	6 Months Ended
	Jun. 30, 2019
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 June 30, 2019 and December 31, 2018 :     June 30, 2019  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 9,540,000 $ - $ - $ 9,540,000 $ 9,540,000 $ - $ -  Subtotal 9,540,000 - - 9,540,000 9,540,000 - -   Investments:  Commercial Paper 1,992,000 - - 1,992,000 - 1,992,000 -  Corporate Notes/Bonds 2,009,000 - - 2,009,000 - 2,009,000 -  Subtotal 4,001,000 - - 4,001,000 - 4,001,000 -    Total $ 13,541,000 $ - $ - $ 13,541,000 $ 9,540,000 $ 4,001,000 $ -         December 31, 2018  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 8,428,000 $ - $ - $ 8,428,000 $ 8,428,000 $ - $ -  Total $ 8,428,000 $ - $ - $ 8,428,000 $ 8,428,000 $ - $ -  The Company tests for other than temporary losses on a quarterly basis. The Company intends to hold the investments until it can recover the full principal amount and has the ability to do so based on other sources of liquidity. The Company expects such recoveries to occur prior to the contractual maturities. The Company did no t have any unrealized losses as of June 30, 2019 . 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 June 30, 2019 :    Amortized Cost Estimated Market Value   Due within one year $ 4,001,000 $ 4,001,000 The Company did not recognize any gross realized gains or losses during either of the six-month periods ending June 30, 2019 and 2018 , 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).

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jun. 30, 2019
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 June 30, 2019 . The ESPP is considered compensatory under current Internal Revenue Service rules. At June 30, 2019 , after giving effect to the shares issued as of that date, 102,114 shares remain available for future issuance under the ESPP.  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.  During 2019 , stock options covering 100,769 shares have been awarded to key executive employees and directors. These options expire seven years from the date of award and generally vest 25 % each year beginning one year after the date of award. The Company also granted deferred stock awards of 157,907 shares to key employees during the first quarter of 2019 under the Company’s long-term incentive plan. These awards vest over three years with the first vesting date being March 28, 2020.  At June 30, 2019 , 213,130 shares have been issued under the 2011 Incentive Plan, 1,681,614 shares are subject to currently outstanding options, deferred stock awards, and unvested restricted stock units, and 605,256 shares are eligible for grant under future awards.  Stock Option Plan for Directors  Shares of common stock are reserved for issuance to non-employee directors under options granted by the Company prior to 2011 under its Stock Option Plan for Non-Employee Directors (the “Director Plan”) . Under the Director Plan nonqualified stock options to acquire shares of common stock were automatically granted to each non-employee director concurrent with annual meetings of shareholders in 2010 and earlier years, with t he exercise price of options granted being the fair market value of the common stock on the date of the respective shareholder meetings. Options granted under the Director Plan expire 10 years from date of grant. No options have been granted under the Director Plan since 2011 when the Company amended the Director Plan to prohibit future option grants. As of June 30, 2019 , there were 18,000 shares subject to outstanding options under the Director Plan.  Changes in Stock Options Outstanding  The following table summarizes changes in the number of outstanding stock options under the 2011 Incentive Plan and the Director Plan over the period December 31, 2018 to June 30, 2019 :     Weighted average  Weighted average remaining  exercise price contractual term  Options per share in years  Outstanding – December 31, 2018 1,380,492 $ 7.56 4.18  Awarded 100,769 2.69  Exercised - -  Forfeited (147,127) 10.84  Outstanding – June 30, 2019 1,334,134 6.83 4.15   Exercisable at June 30, 2019 982,665 $ 7.94 3.60  Expected to vest June 30, 2019 1,334,134 6.83 4.15  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 June 30, 2019 was $ 60,000 . The intrinsic value of all options exercised during the six months ended June 30, 2019 was $ 0 . Net cash proceeds from the exercise of all stock options were $ 0 in each of the six-month periods ended June 30, 2019 and 2018 .  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, 2018 to June 30, 2019 :     Weighted Average  Grant Date  Shares Fair Value  Outstanding – December 31, 2018 270,066 $ 4.48  Granted 157,907 2.64  Vested (4,575) 4.56  Forfeited (57,918) 4.32  Outstanding – June 30, 2019 365,480 3.33  Compensation Expense  Share-based compensation expense recognized for the six months ended June 30, 2019 was $ 189,000 before income taxes and $ 149,000 after income taxes. Share-based compensation expense recognized for the six months ended June 30 , 2018 was $ 110,000 before income taxes and $ 87,000 after income taxes. Unrecognized compensation expense for the Company’s plans was $ 527,000 at June 30, 2019 and is expected to be recognized over a weighted-average period of 2.5 years. Share-based compensation expense is recorded as a part of selling, general and administrative expenses.

Inventories

Inventories	6 Months Ended
	Jun. 30, 2019
Inventories [Abstract]
Inventories	NOTE 6 - INVENTORIES  Inventories summarized below are priced at the lower of first-in, first-out cost or net realizable value:     June 30 December 31  2019 2018  Finished goods $ 8,720,000 $ 9,608,000  Raw and processed materials 4,929,000 6,568,000  $ 13,649,000 $ 16,176,000

Intangible Assets

Intangible Assets	6 Months Ended
	Jun. 30, 2019
Intangible Assets [Abstract]
Intangible Assets	NOTE 7 –INTANGIBLE ASSETS  The Company’s identifiable intangible assets with finite lives, included in other assets, net on the condensed consolidated balance sheets, are being amortized over their estimated useful lives and were as follows:     June 30, 2019  Gross Carrying Amount Accumulated Amortization Impairment loss Foreign Currency Translation Net   Trademarks $ 98,000 $ (78,000) $ - $ (20,000) $ -  Customer relationships 491,000 (230,000) (154,000) (107,000) -  Technology 229,000 (189,000) - (40,000) -  $ 818,000 $ (497,000) $ (154,000) $ (167,000) $ -      December 31, 2018  Gross Carrying Amount Accumulated Amortization Impairment loss Foreign Currency Translation Net   Trademarks $ 98,000 $ (74,000) $ - $ (19,000) $ 5,000  Customer relationships 491,000 (230,000) (154,000) (107,000) -  Technology 229,000 (178,000) - (51,000) -  $ 818,000 $ (482,000) $ (154,000) $ (177,000) $ 5,000   Amortization expense on these identifiable intangible assets was $ 5,000 and $ 6,000 for the six months ended June 30, 2019 and 2018 , respectively. The amortization expense is included in selling, general and administrative expenses.

Warranty

Warranty	6 Months Ended
	Jun. 30, 2019
Warranty [Abstract]
Warranty	NOTE 8 – WARRANTY  We provide reserves for the estimated cost of product warranties at the time revenue is recognized. We estimate the costs of our warranty obligations based on our warranty policy or applicable contractual warranty, historical experience of known product failure rates, and use of materials and service delivery costs incurred in correcting product failures. Management reviews the estimated warranty liability on a quarterly basis to determine its adequacy. The actual warranty expense could differ from the estimates made by the Company based on product performance. The warranty liability is included in other accrued liabilities on the condensed consolidated balance sheet.  The following table presents the changes in the Company’s warranty liability for the six-month periods ended June 30, 2019 and 2018 , respectively, the majority of which relates to a five -year obligation to provide for potential future liabilities for network equipment sales.     2019 2018  Beginning balance $ 594,000 $ 603,000  Amounts charged (credited) to expense (21,000) 88,000  Actual warranty costs paid (19,000) (57,000)  Ending balance $ 554,000 $ 634,000

Contingencies

Contingencies	6 Months Ended
	Jun. 30, 2019
General Commitments [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	6 Months Ended
	Jun. 30, 2019
Debt [Abstract]
Debt	NOTE 10 – DEBT  Line of Credit The Company has a $15,000,000 line of credit from Wells Fargo Bank, N.A. The Company had no outstanding borrowings against the line of credit at June 30, 2019 or December 31, 2018 . Due to the revolving nature of loans under our credit facility, additional borrowings and periodic repayments and re-borrowings may be made until the maturity date. The total amount available for borrowings under our credit facility at June 30, 2019 was $ 7,404,000 , based on the borrowing base calculation. Interest on borrowings on the credit line is at LIBOR plus 2.0% ( 4.4% at June 30, 2019 ). The credit agreement expires August 12, 2021 and is secured by assets of the Company. Our credit agreement contains financial covenants including a minimum liquidity balance of $10,000,000 . Liquidity is calculated as the sum of unrestricted cash, marketable securities and the availability on the line of credit. The Company was in compliance with its financial covenants at June 30, 2019 .

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2019
Income Taxes [Abstract]
Income Taxes	NOTE 11 – 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 June 30, 2019 there was $ 98,000 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 2015-2018 remain open to examination by the Internal Revenue Service and the years 2014-2018 remain open to examination by various state tax departments. The tax years from 2015-2018 remain open in Costa Rica. The Company’s effective income tax rate was (0.6%) for the first six months of 2019 . 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 shortfalls , provision true-ups, 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 8.0% for the six months ended June 30, 2019 . There were no additional uncertain tax positions identified in the first six months of 2019 . The Company's effective income tax rate for the six months ended June 30 , 2018 was 0.1% , 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, provisions for interest charges for uncertain income tax positions, stock compensation shortfalls and changes in valuation allowances related to deferred tax assets .

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2019
Segment Information [Abstract]
Segment Information	NOTE 12 – SEGMENT INFORMATION  Effective January 1, 2019, the Company realigned the financial reporting for its business units. As a result of this realignment, certain corporate general and administrative expenses that were previously included within the business unit level as fully allocated costs are now categorized as “Other”. The Company classifies its businesses into the four segments as follows:  · Transition Networks manufactures media converters, NIDs, NICs, Ethernet switches and other connectivity products that offer customers the ability to affordably integrate the benefits of fiber optics into any data network; · Suttle manufactures and markets connectivity infrastructure products for broadband and voice communications; · JDL Technologies provides technology solutions that address prevalent IT challenges, including virtualization and cloud solutions, managed services, wired and wireless network design and implementation, and converged infrastructure configuration and deployment ; and · Net2Edge develops, manufactures and sells edge network access products to telecommunications carriers .  Management has chosen to organize the Company and disclose reportable segments based on our products and services. Intersegment revenues are eliminated upon consolidation. In order to conform to the 2019 presentation, the Company has reclassified the 2018 corporate expenses previously allocated to reportable segments to the “Other” section.  Information concerning the Company’s continuing operations in the various segments for the three and six-month periods ended June 30, 2019 and 2018 are as follows:      Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Three Months Ended June 30, 2019  Sales $ 9,175,000 $ 4,747,000 $ 951,000 $ 796,000 $ - $ (269,000) $ 15,400,000  Cost of sales 5,232,000 3,280,000 700,000 543,000 - (63,000) 9,692,000  Gross profit 3,943,000 1,467,000 251,000 253,000 - (206,000) 5,708,000  Selling, general and  administrative expenses 3,575,000 938,000 331,000 760,000 574,000 (206,000) 5,972,000  Operating income (loss) 368,000 529,000 (80,000) (507,000) (574,000) - (264,000)  Other income (expense) (1,000) 2,980,000 - 3,000 62,000 - 3,044,000  Income (loss) before income tax $ 367,000 $ 3,509,000 $ (80,000) $ (504,000) $ (512,000) $ - $ 2,780,000   Depreciation and amortization $ 71,000 $ 220,000 $ 26,000 $ 18,000 $ - $ - $ 335,000   Capital expenditures $ 4,000 $ - $ - $ 1,000 $ 28,000 $ - $ 33,000   Assets $ 16,397,000 $ 9,747,000 $ 1,658,000 $ 3,024,000 $ 23,276,000 $ (27,000) $ 54,075,000       Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Three Months Ended June 30, 2018  Sales $ 7,834,000 $ 5,873,000 $ 913,000 $ 681,000 $ - $ (263,000) $ 15,038,000  Cost of sales 4,327,000 5,414,000 841,000 501,000 - (30,000) 11,053,000  Gross profit 3,507,000 459,000 72,000 180,000 - (233,000) 3,985,000  Selling, general and  administrative expenses 3,266,000 1,903,000 422,000 820,000 529,000 (233,000) 6,707,000  Operating (loss) income 241,000 (1,444,000) (350,000) (640,000) (529,000) - (2,722,000)  Other income (expense) 6,000 (4,000) 3,000 20,000 44,000 - 69,000  Income (loss) before income tax $ 247,000 $ (1,448,000) $ (347,000) $ (620,000) $ (485,000) $ - $ (2,653,000)   Depreciation and amortization $ 100,000 $ 386,000 $ 41,000 $ 14,000 $ - $ - $ 541,000   Capital expenditures $ 18,000 $ 232,000 $ - $ 98,000 $ - $ - $ 348,000   Assets $ 15,058,000 $ 15,748,000 $ 912,000 $ 2,468,000 $ 20,780,000 $ (27,000) $ 54,939,000     Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Six Months Ended June 30, 2019  Sales $ 18,065,000 $ 10,268,000 $ 3,160,000 $ 1,244,000 $ - $ (614,000) $ 32,123,000  Cost of sales 10,368,000 7,000,000 2,040,000 771,000 - (191,000) 19,988,000  Gross profit 7,697,000 3,268,000 1,120,000 473,000 - (423,000) 12,135,000  Selling, general and  administrative expenses 7,270,000 1,996,000 707,000 1,508,000 1,160,000 (423,000) 12,218,000  Operating (loss) income 427,000 1,272,000 413,000 (1,035,000) (1,160,000) - (83,000)  Other income (expense) (1,000) 2,989,000 (10,000) 2,000 98,000 - 3,078,000  Income (loss) before income tax $ 426,000 $ 4,261,000 $ 403,000 $ (1,033,000) $ (1,062,000) $ - $ 2,995,000   Depreciation and amortization $ 150,000 $ 513,000 $ 54,000 $ 38,000 $ - $ - $ 755,000   Capital expenditures $ 4,000 $ 16,000 $ 36,000 $ 8,000 $ 196,000 $ - $ 260,000      Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Six Months Ended June 30, 2018  Sales $ 16,988,000 $ 12,846,000 $ 1,622,000 $ 846,000 $ - $ (490,000) $ 31,812,000  Cost of sales 9,554,000 11,012,000 1,568,000 563,000 - (49,000) 22,648,000  Gross profit 7,434,000 1,834,000 54,000 283,000 - (441,000) 9,164,000  Selling, general and  administrative expenses 6,731,000 3,877,000 845,000 1,724,000 1,124,000 (441,000) 13,860,000  Operating (loss) income 703,000 (2,043,000) (791,000) (1,441,000) (1,124,000) - (4,696,000)  Other income 4,000 20,000 3,000 12,000 152,000 - 191,000  Income (loss) before income tax $ 707,000 $ (2,023,000) $ (788,000) $ (1,429,000) $ (972,000) $ - $ (4,505,000)   Depreciation and amortization $ 241,000 $ 799,000 $ 105,000 $ 28,000 $ - $ - $ 1,173,000   Capital expenditures $ 38,000 $ 459,000 $ - $ 115,000 $ - $ - $ 612,000 

Net Income (Loss) Per Share

Net Income (Loss) Per Share	6 Months Ended
	Jun. 30, 2019
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 2,530 and 0 for the three and six-month periods ended June 30, 2019 , respectively. Due to the net losses in the first three and six months of 2018, there was no dilutive impact from stock options or unvested shares. The Company calculates the dilutive effect of outstanding options using the treasury stock method. Options totaling 1,173,365 and 1,223,365 were excluded from the calculation of diluted earnings per share for the three and six months ended June 30, 2019 b ecause the exercise price was greater than the average market price of common stock during the period and deferred stock awards totaling 207,573 shares would not have been included for the three and six months ended June 30, 2019 because of unmet performance conditions. Options totaling 1,150,107 and 1,178,607 were excluded from the calculation of diluted earnings per share for the three and six months ended June 30 , 2018 because the exercise price was greater than the average market price of common stock during the period and deferred stock awards totaling 309,819 shares would not have been included for the three and six months ended June 30, 2018 because of unmet performance conditions.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019
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 June 30, 2019 and December 31, 2018 , are summarized below:     June 30, 2019   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 9,540,000 $ - $ - $ 9,540,000  Subtotal 9,540,000 - - 9,540,000   Short-term investments:  Commercial Paper - 1,992,000 - 1,992,000  Corporate Notes/Bonds - 2,009,000 - 2,009,000  Subtotal - 4,001,000 - 4,001,000   Total $ 9,540,000 $ 4,001,000 $ - $ 13,541,000      December 31, 2018   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 8,428,000 $ - $ - $ 8,428,000  Total $ 8,428,000 $ - $ - $ 8,428,000  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 six months ended June 30, 2019 .

General Commitments

General Commitments	6 Months Ended
	Jun. 30, 2019
General Commitments [Abstract]
General Commitments	NOTE 15 – GENERAL COMMITMENTS  On August 2, 2018, the Company entered into a purchase agreement with Launch Properties, LLC for the sale of the Company’s building located at 10900 Red Circle Drive, Minnetonka, MN for $10,000,000 . The building currently includes the Company’s corporate administrative offices, as well as some operations for Transition Networks, Suttle and JDL Technologies. The closing of the transaction is subject to several closing conditions, including the buyer’s ability to complete due diligence within 180 days and the buyer’s ability to obtain regulatory approval for its intended use of the property. The due diligence period lapsed on January 29, 2019 and the buyer met certain required obligations. One of the conditions of the agreement included non-refundable deposits into an escrow account. As of June 30, 2019, the balance was $125,000 and is included within restricted cash within the condensed consolidated balance sheet. If the sale proceeds, the Company currently expects the transaction to close in the second half of 2020. 

Disposition Of Assets

Disposition Of Assets	6 Months Ended
	Jun. 30, 2019
Disposition Of Assets [Abstract]
Disposition Of Assets	 NOTE 16 – DISPOSITION OF ASSETS  On April 5, 2019, the Company sold its Suttle FutureLink™ Fiber business line, including inventory, equipment, and customer relationships, to PPC Broadband Inc. (“PPC”). The transaction was structured as an Asset Purchase Agreement with a simultaneous signing and closing. The sale price was $5,000,000 cash, of which $500,000 was deferred into an escrow account until certain criteria are met and is recorded as restricted cash within the condensed consolidated balance sheet. The Company recognized a gain on the sale of inventory and capital equipment totaling $2,967,000 . Concurrent with the closing of the transaction, Suttle and PPC entered into a Transition Services Agreement under which Suttle will continue to manufacture products related to the FutureLink™ Fiber business line until September 30, 2019, to ensure seamless supply to the customer base.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	6 Months Ended
	Jun. 30, 2019
Recent Accounting Pronouncements [Abstract]
Recent Accounting Pronouncements	 NOTE 17 – RECENT ACCOUNTING PRONOUNCEMENTS  In February 2016, the FASB issued ASU 2016-02, “Leases” (Topic 842), which amends existing guidance and requires an entity to recognize both assets and liabilities arising from financing and operating leases, along with additional qualitative and quantitative disclosures. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within that reporting period, and early adoption is permitted. The Company adopted the accounting standard effective January 1, 2019. Please see Note 3 for the required disclosures related to the impact of adopting this standard.  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, 2019, which for us is the first quarter ending March 31, 2020. 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	6 Months Ended
	Jun. 30, 2019
Subsequent Events [Abstract]
Subsequent Events	NOTE 18 – SUBSEQUENT EVENTS  The Company has evaluated subsequent events through the date of this filing. We do not believe there are any material subsequent events other than those disclosed in the footnotes to these financial statements that require further disclosure. 

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policy)	6 Months Ended
	Jun. 30, 2019
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 operates directly and through its subsidiaries located in the United States (U.S.) and the United Kingdom (U.K.). CSI is principally engaged through its Transition Networks, Inc. (“Transition Networks” or “Transition”) subsidiary and business unit in the manufacture and sale of core media conversion products, Ethernet switches, and other connectivity and data transmission products, and through its Suttle, Inc. (“Suttle”) subsidiary and business unit in the manufacture and sale of connectivity infrastructure products for broadband and voice communications. Through its JDL Technologies, Inc. (“JDL Technologies” or “JDL”) business unit, CSI provides technology solutions including virtualization, managed services, wired and wireless network design and implementation, and hybrid cloud infrastructure and deployment. Through its Net2Edge Limited (“Net2Edge”) U.K.-based business unit, the Company develops, manufactures and sells Ethernet-based edge network access products to telecommunications carriers.   The Company classifies its businesses into four segments corresponding to the Transition Networks, Suttle, JDL Technologies, and Net2Edge business units. 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 and condensed consolidated statement of changes in stockholders’ equity as of June 30, 2019 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 June 30, 2019 and 2018 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 June 30, 2019 and 2018 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, 2018 Annual Report to Shareholders on Form 10-K. The results of operations for the period ended June 30, 2019 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 Company's Annual Report on Form 10-K for the year ended December 31, 2018 , 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 on securities Accumulated Other Comprehensive Loss  December 31, 2018 $ (764,000) $ 13,000 $ (751,000)   Net current period change (20,000) 1,000 (19,000)   June 30, 2019 $ (784,000) $ 14,000 $ (770,000) 

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2019
Summary of Significant Accounting Policies [Abstract]
Components of Accumulated Other Comprehensive Loss	    Foreign Currency Translation Unrealized gain on securities Accumulated Other Comprehensive Loss  December 31, 2018 $ (764,000) $ 13,000 $ (751,000)   Net current period change (20,000) 1,000 (19,000)   June 30, 2019 $ (784,000) $ 14,000 $ (770,000) 

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	Jun. 30, 2019
Revenue Recognition [Abstract]
Schedule of Disaggregation of Revenues	For Transition Networks, we analyze revenue by region and product group, which is as follows for the three and six months ended June 30, 2019 and 2018:      Transition Networks Sales by Region  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  North America $ 8,052,000 $ 6,450,000 $ 14,963,000 $ 14,092,000  Rest of World 672,000 864,000 1,396,000 1,840,000  Europe, Middle East, Africa ("EMEA") 451,000 520,000 1,706,000 1,056,000  $ 9,175,000 $ 7,834,000 $ 18,065,000 $ 16,988,000        Transition Networks Sales by Product Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Media converters $ 4,683,000 $ 4,492,000 $ 10,061,000 $ 9,677,000  Ethernet switches and adapters 2,831,000 1,827,000 4,831,000 4,086,000  Other products 1,661,000 1,515,000 3,173,000 3,225,000  $ 9,175,000 $ 7,834,000 $ 18,065,000 $ 16,988,000   For Suttle, we analyze revenues by product and customer group, which is as follows for the three and six months ended June 30, 2019 and 2018 :     Suttle Sales by Product Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Structured cabling and connecting system products $ 3,766,000 $ 5,169,000 $ 8,843,000 $ 11,742,000  DSL and other products 981,000 704,000 1,425,000 1,104,000  $ 4,747,000 $ 5,873,000 $ 10,268,000 $ 12,846,000       Suttle Sales by Customer Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Communication service providers $ 3,367,000 $ 4,500,000 $ 7,958,000 $ 10,447,000  International 109,000 766,000 508,000 1,346,000  Distributors 568,000 607,000 1,099,000 1,053,000  Other 703,000 - 703,000 -  $ 4,747,000 $ 5,873,000 $ 10,268,000 $ 12,846,000   For JDL, we analyze revenue by customer group, which is as follows for the three and six months ended June 30, 2019 and 2018 :     JDL Revenue by Customer Group  Three Months Ended June 30 Six Months Ended June 30  2019 2018 2019 2018  Education $ 295,000 $ 280,000 $ 1,768,000 $ 388,000  Healthcare and commercial clients 656,000 633,000 1,392,000 1,234,000  $ 951,000 $ 913,000 $ 3,160,000 $ 1,622,000  

Leases (Tables)

Leases (Tables)	6 Months Ended
	Jun. 30, 2019
Leases [Abstract]
Information Related to ROU Assets and Related Lease Liabilities	    Three Months Ended June 30, 2019 Six Months Ended June 30, 2019   Cash paid for operating leases $ 33,000 $ 50,000  Right-of-use assets obtained in exchange for new operating lease obligations (1) - 450,000    As of June 30, 2019  Weighted-average remaining lease term 3.8 years  Weighted-average discount rate 4.5%  (1) Includes $262,000 for operating leases existing on January 1, 2019 and $188,000 for operating leases that commenced in the first quarter of 2019.
Maturities of Lease Liabilities	   Q3 - Q4 2019 $ 63,000  2020 124,000  2021 129,000  2022 88,000  2023 47,000  Thereafter 4,000  Total lease payments 455,000  Less imputed interest (47,000)  Total operating lease liabilities $ 408,000  
Future Minimum Lease Commitments under Operating Leases based on ASC 840	   Year Ending December 31:  2019 $ 106,000  2020 86,000  2021 86,000  2022 50,000  $ 328,000  

Cash Equivalents and Investme_2

Cash Equivalents and Investments (Tables)	6 Months Ended
	Jun. 30, 2019
Cash Equivalents and Investments [Abstract]
Schedule of Cash Equivalents and Available-for-Sale Securities	   June 30, 2019  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 9,540,000 $ - $ - $ 9,540,000 $ 9,540,000 $ - $ -  Subtotal 9,540,000 - - 9,540,000 9,540,000 - -   Investments:  Commercial Paper 1,992,000 - - 1,992,000 - 1,992,000 -  Corporate Notes/Bonds 2,009,000 - - 2,009,000 - 2,009,000 -  Subtotal 4,001,000 - - 4,001,000 - 4,001,000 -    Total $ 13,541,000 $ - $ - $ 13,541,000 $ 9,540,000 $ 4,001,000 $ -         December 31, 2018  Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Cash Equivalents Short-Term Investments Long-Term Investments   Cash equivalents:  Money Market funds $ 8,428,000 $ - $ - $ 8,428,000 $ 8,428,000 $ - $ -  Total $ 8,428,000 $ - $ - $ 8,428,000 $ 8,428,000 $ - $ - 
Schedule of Estimated Fair Value of Available-for-Sale Securities	   Amortized Cost Estimated Market Value   Due within one year $ 4,001,000 $ 4,001,000 

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
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, 2018 1,380,492 $ 7.56 4.18  Awarded 100,769 2.69  Exercised - -  Forfeited (147,127) 10.84  Outstanding – June 30, 2019 1,334,134 6.83 4.15   Exercisable at June 30, 2019 982,665 $ 7.94 3.60  Expected to vest June 30, 2019 1,334,134 6.83 4.15 
Schedule of Changes in the Number of Deferred Stock Shares Under the Incentive Plan	   Weighted Average  Grant Date  Shares Fair Value  Outstanding – December 31, 2018 270,066 $ 4.48  Granted 157,907 2.64  Vested (4,575) 4.56  Forfeited (57,918) 4.32  Outstanding – June 30, 2019 365,480 3.33 

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jun. 30, 2019
Inventories [Abstract]
Schedule of Inventories	   June 30 December 31  2019 2018  Finished goods $ 8,720,000 $ 9,608,000  Raw and processed materials 4,929,000 6,568,000  $ 13,649,000 $ 16,176,000 

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2019
Intangible Assets [Abstract]
Schedule of Finite-Lived Intangible Assets	   June 30, 2019  Gross Carrying Amount Accumulated Amortization Impairment loss Foreign Currency Translation Net   Trademarks $ 98,000 $ (78,000) $ - $ (20,000) $ -  Customer relationships 491,000 (230,000) (154,000) (107,000) -  Technology 229,000 (189,000) - (40,000) -  $ 818,000 $ (497,000) $ (154,000) $ (167,000) $ -      December 31, 2018  Gross Carrying Amount Accumulated Amortization Impairment loss Foreign Currency Translation Net   Trademarks $ 98,000 $ (74,000) $ - $ (19,000) $ 5,000  Customer relationships 491,000 (230,000) (154,000) (107,000) -  Technology 229,000 (178,000) - (51,000) -  $ 818,000 $ (482,000) $ (154,000) $ (177,000) $ 5,000 

Warranty (Tables)

Warranty (Tables)	6 Months Ended
	Jun. 30, 2019
Warranty [Abstract]
Schedule of Warranty	   2019 2018  Beginning balance $ 594,000 $ 603,000  Amounts charged (credited) to expense (21,000) 88,000  Actual warranty costs paid (19,000) (57,000)  Ending balance $ 554,000 $ 634,000 

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
Segment Information [Abstract]
Schedule of Segment Information	   Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Three Months Ended June 30, 2019  Sales $ 9,175,000 $ 4,747,000 $ 951,000 $ 796,000 $ - $ (269,000) $ 15,400,000  Cost of sales 5,232,000 3,280,000 700,000 543,000 - (63,000) 9,692,000  Gross profit 3,943,000 1,467,000 251,000 253,000 - (206,000) 5,708,000  Selling, general and  administrative expenses 3,575,000 938,000 331,000 760,000 574,000 (206,000) 5,972,000  Operating income (loss) 368,000 529,000 (80,000) (507,000) (574,000) - (264,000)  Other income (expense) (1,000) 2,980,000 - 3,000 62,000 - 3,044,000  Income (loss) before income tax $ 367,000 $ 3,509,000 $ (80,000) $ (504,000) $ (512,000) $ - $ 2,780,000   Depreciation and amortization $ 71,000 $ 220,000 $ 26,000 $ 18,000 $ - $ - $ 335,000   Capital expenditures $ 4,000 $ - $ - $ 1,000 $ 28,000 $ - $ 33,000   Assets $ 16,397,000 $ 9,747,000 $ 1,658,000 $ 3,024,000 $ 23,276,000 $ (27,000) $ 54,075,000       Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Three Months Ended June 30, 2018  Sales $ 7,834,000 $ 5,873,000 $ 913,000 $ 681,000 $ - $ (263,000) $ 15,038,000  Cost of sales 4,327,000 5,414,000 841,000 501,000 - (30,000) 11,053,000  Gross profit 3,507,000 459,000 72,000 180,000 - (233,000) 3,985,000  Selling, general and  administrative expenses 3,266,000 1,903,000 422,000 820,000 529,000 (233,000) 6,707,000  Operating (loss) income 241,000 (1,444,000) (350,000) (640,000) (529,000) - (2,722,000)  Other income (expense) 6,000 (4,000) 3,000 20,000 44,000 - 69,000  Income (loss) before income tax $ 247,000 $ (1,448,000) $ (347,000) $ (620,000) $ (485,000) $ - $ (2,653,000)   Depreciation and amortization $ 100,000 $ 386,000 $ 41,000 $ 14,000 $ - $ - $ 541,000   Capital expenditures $ 18,000 $ 232,000 $ - $ 98,000 $ - $ - $ 348,000   Assets $ 15,058,000 $ 15,748,000 $ 912,000 $ 2,468,000 $ 20,780,000 $ (27,000) $ 54,939,000     Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Six Months Ended June 30, 2019  Sales $ 18,065,000 $ 10,268,000 $ 3,160,000 $ 1,244,000 $ - $ (614,000) $ 32,123,000  Cost of sales 10,368,000 7,000,000 2,040,000 771,000 - (191,000) 19,988,000  Gross profit 7,697,000 3,268,000 1,120,000 473,000 - (423,000) 12,135,000  Selling, general and  administrative expenses 7,270,000 1,996,000 707,000 1,508,000 1,160,000 (423,000) 12,218,000  Operating (loss) income 427,000 1,272,000 413,000 (1,035,000) (1,160,000) - (83,000)  Other income (expense) (1,000) 2,989,000 (10,000) 2,000 98,000 - 3,078,000  Income (loss) before income tax $ 426,000 $ 4,261,000 $ 403,000 $ (1,033,000) $ (1,062,000) $ - $ 2,995,000   Depreciation and amortization $ 150,000 $ 513,000 $ 54,000 $ 38,000 $ - $ - $ 755,000   Capital expenditures $ 4,000 $ 16,000 $ 36,000 $ 8,000 $ 196,000 $ - $ 260,000      Transition JDL Intersegment  Networks Suttle Technologies Net2Edge Other Eliminations Total  Six Months Ended June 30, 2018  Sales $ 16,988,000 $ 12,846,000 $ 1,622,000 $ 846,000 $ - $ (490,000) $ 31,812,000  Cost of sales 9,554,000 11,012,000 1,568,000 563,000 - (49,000) 22,648,000  Gross profit 7,434,000 1,834,000 54,000 283,000 - (441,000) 9,164,000  Selling, general and  administrative expenses 6,731,000 3,877,000 845,000 1,724,000 1,124,000 (441,000) 13,860,000  Operating (loss) income 703,000 (2,043,000) (791,000) (1,441,000) (1,124,000) - (4,696,000)  Other income 4,000 20,000 3,000 12,000 152,000 - 191,000  Income (loss) before income tax $ 707,000 $ (2,023,000) $ (788,000) $ (1,429,000) $ (972,000) $ - $ (4,505,000)   Depreciation and amortization $ 241,000 $ 799,000 $ 105,000 $ 28,000 $ - $ - $ 1,173,000   Capital expenditures $ 38,000 $ 459,000 $ - $ 115,000 $ - $ - $ 612,000        

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value Measurements [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	   June 30, 2019   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 9,540,000 $ - $ - $ 9,540,000  Subtotal 9,540,000 - - 9,540,000   Short-term investments:  Commercial Paper - 1,992,000 - 1,992,000  Corporate Notes/Bonds - 2,009,000 - 2,009,000  Subtotal - 4,001,000 - 4,001,000   Total $ 9,540,000 $ 4,001,000 $ - $ 13,541,000      December 31, 2018   Level 1 Level 2 Level 3 Total Fair Value   Cash equivalents:  Money Market Funds $ 8,428,000 $ - $ - $ 8,428,000  Total $ 8,428,000 $ - $ - $ 8,428,000 

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019segment
Summary of Significant Accounting Policies [Abstract]
Number of segments	4

Summary of Significant Accoun_5

Summary of Significant Accounting Policies (Components of Accumulated Other Comprehensive Loss) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	$ 41,653,127
BALANCE	44,773,443
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(764,000)
Net current period change	(20,000)
BALANCE	(784,000)
Unrealized gain on securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	13,000
Net current period change	1,000
BALANCE	14,000
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
BALANCE	(751,293)
Net current period change	(19,000)
BALANCE	$ (769,938)

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 15,400,076	$ 15,038,159	$ 32,123,370	$ 31,811,844
Net2Edge [Member]
Segment Reporting Information [Line Items]
Revenues	$ 796,000	$ 681,000	$ 1,244,000	$ 846,000

Revenue Recognition (Schedule o

Revenue Recognition (Schedule of Disaggregation of Revenues) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 15,400,076	$ 15,038,159	$ 32,123,370	$ 31,811,844
Transition Networks [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,175,000	7,834,000	18,065,000	16,988,000
Transition Networks [Member] | North America [Member]
Disaggregation of Revenue [Line Items]
Revenues	8,052,000	6,450,000	14,963,000	14,092,000
Transition Networks [Member] | Rest of World [Member]
Disaggregation of Revenue [Line Items]
Revenues	672,000	864,000	1,396,000	1,840,000
Transition Networks [Member] | Europe, Middle East, Africa ("EMEA") [Member]
Disaggregation of Revenue [Line Items]
Revenues	451,000	520,000	1,706,000	1,056,000
Transition Networks [Member] | Media Converters [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,683,000	4,492,000	10,061,000	9,677,000
Transition Networks [Member] | Ethernet Switches and Adapters [Member]
Disaggregation of Revenue [Line Items]
Revenues	2,831,000	1,827,000	4,831,000	4,086,000
Transition Networks [Member] | Other Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	1,661,000	1,515,000	3,173,000	3,225,000
Suttle [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,747,000	5,873,000	10,268,000	12,846,000
Suttle [Member] | Communication Service Providers [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,367,000	4,500,000	7,958,000	10,447,000
Suttle [Member] | International [Member]
Disaggregation of Revenue [Line Items]
Revenues	109,000	766,000	508,000	1,346,000
Suttle [Member] | Distributors [Member]
Disaggregation of Revenue [Line Items]
Revenues	568,000	607,000	1,099,000	1,053,000
Suttle [Member] | Other Customer [Member]
Disaggregation of Revenue [Line Items]
Revenues	703,000		703,000
Suttle [Member] | Structured Cabling and Connecting System Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	3,766,000	5,169,000	8,843,000	11,742,000
Suttle [Member] | DSL and Other Products [Member]
Disaggregation of Revenue [Line Items]
Revenues	981,000	704,000	1,425,000	1,104,000
JDL Technologies [Member]
Disaggregation of Revenue [Line Items]
Revenues	951,000	913,000	3,160,000	1,622,000
JDL Technologies [Member] | Education [Member]
Disaggregation of Revenue [Line Items]
Revenues	295,000	280,000	1,768,000	388,000
JDL Technologies [Member] | Healthcare and Commercial Clients [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 656,000	$ 633,000	$ 1,392,000	$ 1,234,000

Leases (Narrative) (Details)

Leases (Narrative) (Details)	1 Months Ended	3 Months Ended	6 Months Ended
	Feb. 28, 2019item	Jun. 30, 2019USD ($)	Jun. 30, 2019USD ($)item	Jan. 01, 2019USD ($)
Lessee, Lease, Description [Line Items]
Operating lease right of use asset | $		$ 422,935	$ 422,935	$ 280,000
Lease liability | $		408,000	$ 408,000	$ 259,000
Number of locations	1		2
Lease expense | $		$ 32,000	$ 61,000
Lease 1 [Member]
Lessee, Lease, Description [Line Items]
Number of leases with option to extend			1
Number of options to extend			2
Lease renewal term		5 years	5 years
Lease 2 [Member]
Lessee, Lease, Description [Line Items]
Date of option to terminate			2022
Number of leases with annual payment adjustment			1
Percentage of annual rent adjustment			3.00%
Minimum [Member] | Lease 1 [Member]
Lessee, Lease, Description [Line Items]
Lease term		5 years	5 years
Minimum [Member] | Lease 2 [Member]
Lessee, Lease, Description [Line Items]
Lease term		5 years	5 years
Maximum [Member] | Lease 1 [Member]
Lessee, Lease, Description [Line Items]
Lease term		8 years	8 years
Maximum [Member] | Lease 2 [Member]
Lessee, Lease, Description [Line Items]
Lease term		8 years	8 years

Leases (Information Related to

Leases (Information Related to ROU Assets and Related Lease Liabilities) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Jan. 01, 2019
Cash paid for operating leases	$ 33,000	$ 50,000
Right-of-use assets obtained in exchange for new operating lease obligations		$ 449,995
Weighted-average remaining lease term	3 years 9 months 18 days	3 years 9 months 18 days
Weighted-average discount rate	4.50%	4.50%
Operating lease right of use asset	$ 422,935	$ 422,935		$ 280,000
Existing on January 1, 2019 [Member]
Operating lease right of use asset			$ 262,000
Commenced First Quarter 2019 [Member]
Operating lease right of use asset			$ 188,000

Leases (Maturities of Lease Lia

Leases (Maturities of Lease Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Q3 - Q4 2019	$ 63
2020	124
2021	129
2022	88
2023	47
Thereafter	4
Total lease payments	455
Less imputed interest	(47)
Total operating lease liabilities	$ 408	$ 259

Leases (Future Minimum Lease Co

Leases (Future Minimum Lease Commitments under Operating Leases based on ASC 840) (Details) $ in Thousands	Dec. 31, 2018USD ($)
Leases [Abstract]
2019	$ 106
2020	86
2021	86
2022	50
Total minimum future lease commitments	$ 328

Cash Equivalents and Investme_3

Cash Equivalents and Investments (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Equivalents and Investments [Abstract]
Gross unrealized losses	$ 0
Gross realized gains (losses)	$ 0	$ 0

Cash Equivalents and Investme_4

Cash Equivalents and Investments (Schedule of Cash Equivalents and Available-for-Sale Securities) (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 13,541,000	$ 8,428,000
Gross Unrealized Losses	0
Fair Value	13,541,000	8,428,000
Cash Equivalents	9,540,000	8,428,000
Short-Term Investments	4,000,974
Long-Term Investments
Cash Equivalents [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,540,000
Fair Value	9,540,000
Cash Equivalents	9,540,000
Short-Term Investments
Long-Term Investments
Cash Equivalents [Member] | Money Market Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,540,000	8,428,000
Fair Value	9,540,000	8,428,000
Cash Equivalents	9,540,000	8,428,000
Short-Term Investments
Long-Term Investments
Investments [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,001,000
Fair Value	4,001,000
Short-Term Investments	4,001,000
Long-Term Investments
Investments [Member] | Commercial Paper [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,992,000
Fair Value	1,992,000
Short-Term Investments	1,992,000
Long-Term Investments
Investments [Member] | Corporate Notes/Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,009,000
Fair Value	2,009,000
Short-Term Investments	2,009,000
Long-Term Investments

Cash Equivalents and Investme_5

Cash Equivalents and Investments (Schedule of Estimated Fair Value of Available-for-Sale Securities) (Details) $ in Thousands	Jun. 30, 2019USD ($)
Cash Equivalents and Investments [Abstract]
Amortized Cost, Due within one year	$ 4,001
Estimated Market Value, Due within one year	$ 4,001

Stock-Based Compensation (Narra

Stock-Based Compensation (Narrative) (Details) - USD ($)	1 Months Ended	3 Months Ended	4 Months Ended	6 Months Ended		120 Months Ended
	Aug. 31, 2008	Mar. 31, 2019	Dec. 31, 2008	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	May 19, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options outstanding				1,334,134		1,380,492
Aggregate intrinsic value of options outstanding				$ 60,000
Intrinsic value of all options exercised				$ 0
Number of options exercised
Net cash proceeds from exercise of stock options				$ 0	$ 0
Share based compensation expense before income taxes				188,587	109,783
Share based compensation expense after income taxes				149,000	$ 87,000
Unrecognized compensation expense for awards				$ 527,000
Recognition period for unrecognized compensation expense				2 years 6 months
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				213,130
Number of options outstanding				1,681,614
Awards eligible for grant				605,256
2011 Executive Incentive Compensation Plan [Member] | Share-based Payment Arrangement, Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage				25.00%
Stock Option Plan For Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted	0		0	0		0
Award expiration period				10 years
Number of options outstanding				18,000
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				102,114
Key Employees [Member] | 2011 Executive Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred stock awards granted		157,907
Award vesting period		3 years
Key Executive Employees [Member] | 2011 Executive Incentive Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted				100,769
Award expiration period				7 years

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	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Stock-Based Compensation [Abstract]
Options, Outstanding - December 31, 2018	1,380,492
Options, Awarded	100,769
Options, Exercised
Options, Forfeited	(147,127)
Options, Outstanding - June 30, 2019	1,334,134	1,380,492
Options, Exercisable at June 30, 2019	982,665
Options, Expected to vest June 30, 2019	1,334,134
Weighted average exercise price per share, Outstanding - December 31, 2018	$ 7.56
Weighted average exercise price per share, Awarded	2.69
Weighted average exercise price per share, Exercised
Weighted average exercise price per share, Forfeited	10.84
Weighted average exercise price per share, Outstanding - June 30, 2019	6.83	$ 7.56
Weighted average exercise price per share, Exercisable at June 30, 2019	7.94
Weighted average exercise price per share, Expected to vest June 30, 2019	$ 6.83
Options, Outstanding - Weighted average remaining contractual term (in years)	4 years 1 month 24 days	4 years 2 months 5 days
Options, Exercisable - Weighted average remaining contractual term (in years)	3 years 7 months 6 days
Options, Expected to vest - Weighted average remaining contractual term (in years)	4 years 1 month 24 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]	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares, Outstanding - December 31, 2018 | shares	270,066
Shares, Granted | shares	157,907
Shares, Vested | shares	(4,575)
Shares, Forfeited | shares	(57,918)
Shares, Outstanding - June 30, 2019 | shares	365,480
Weighted Average Grant Date Fair Value, Outstanding - December 31, 2018 | $ / shares	$ 4.48
Weighted Average Grant Date Fair Value, Granted | $ / shares	2.64
Weighted Average Grant Date Fair Value, Vested | $ / shares	4.56
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	4.32
Weighted Average Grant Date Fair Value, Outstanding - June 30, 2019 | $ / shares	$ 3.33

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Inventories [Abstract]
Finished goods	$ 8,720,000	$ 9,608,000
Raw and processed materials	4,929,000	6,568,000
Inventories	$ 13,648,913	$ 16,175,616

Intangible Assets (Narrative) (

Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Intangible Assets [Abstract]
Amortization expense	$ 5	$ 6

Intangible Assets (Schedule of

Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 818	$ 818
Accumulated Amortization	(497)	(482)
Impairment loss	(154)	(154)
Foreign Currency Translation	(167)	(177)
Net		5
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	98	98
Accumulated Amortization	(78)	(74)
Impairment loss
Foreign Currency Translation	(20)	(19)
Net		5
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	491	491
Accumulated Amortization	(230)	(230)
Impairment loss	(154)	(154)
Foreign Currency Translation	(107)	(107)
Net
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	229	229
Accumulated Amortization	(189)	(178)
Impairment loss
Foreign Currency Translation	(40)	(51)
Net

Warranty (Details)

Warranty (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Warranty [Abstract]
Product warranty period	5 years
Beginning balance	$ 594	$ 603
Amounts charged (credited) to expense	(21)	88
Actual warranty costs paid	(19)	(57)
Ending balance	$ 554	$ 634

Debt (Narrative) (Details)

Debt (Narrative) (Details) - Line of Credit [Member] - USD ($)	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity	$ 15,000,000
Line of credit, amount outstanding	0	$ 0
Line of credit, remaining borrowing capacity	$ 7,404,000
Line of credit facility, interest rate at period end	4.40%
Line of credit, expiration date	Aug. 12, 2021
Minimum liquidity	$ 10,000,000
LIBOR [Member]
Debt Instrument [Line Items]
Line of credit, basis spread on variable rate	2.00%

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($)	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Income Taxes [Abstract]
Uncertain tax benefit positions that would reduce the effective income tax rate if recognized	$ 98,000
Effective tax rate	(0.60%)	(0.10%)
Federal tax rate	21.00%
Foreign net operating loss carry-forwards and credits	$ 0
Foreign income taxes, net of foreign tax credits	8.00%
Uncertain tax positions	$ 0

Segment Information (Narrative)

Segment Information (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019segment
Segment Information [Abstract]
Number of segments	4

Segment Information (Schedule o

Segment Information (Schedule of Segment Information) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Sales	$ 15,400,076	$ 15,038,159	$ 32,123,370	$ 31,811,844
Cost of sales	9,692,074	11,053,074	19,988,403	22,648,140
Gross profit	5,708,002	3,985,085	12,134,967	9,163,704
Selling, general and administrative expenses	5,972,100	6,707,289	12,218,430	13,860,128
Operating loss	(264,098)	(2,722,204)	(83,463)	(4,696,424)
Other income (expense)	3,043,714	69,169	3,078,225	191,115
Income (Loss) from operations before income taxes	2,779,616	(2,653,035)	2,994,762	(4,505,309)
Depreciation and amortization	335,000	541,000	755,101	1,172,556
Capital expenditures	33,000	348,000	260,000	612,000
Assets	54,075,694	54,939,000	54,075,694	54,939,000	$ 53,321,164
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Sales	(269,000)	(263,000)	(614,000)	(490,000)
Cost of sales	(63,000)	(30,000)	(191,000)	(49,000)
Gross profit	(206,000)	(233,000)	(423,000)	(441,000)
Selling, general and administrative expenses	(206,000)	(233,000)	(423,000)	(441,000)
Depreciation and amortization
Capital expenditures
Assets	(27,000)	(27,000)	(27,000)	(27,000)
Transition Networks [Member]
Segment Reporting Information [Line Items]
Sales	9,175,000	7,834,000	18,065,000	16,988,000
Cost of sales	5,232,000	4,327,000	10,368,000	9,554,000
Gross profit	3,943,000	3,507,000	7,697,000	7,434,000
Selling, general and administrative expenses	3,575,000	3,266,000	7,270,000	6,731,000
Operating loss	368,000	241,000	427,000	703,000
Other income (expense)	(1,000)	6,000	(1,000)	4,000
Income (Loss) from operations before income taxes	367,000	247,000	426,000	707,000
Depreciation and amortization	71,000	100,000	150,000	241,000
Capital expenditures	4,000	18,000	4,000	38,000
Assets	16,397,000	15,058,000	16,397,000	15,058,000
Suttle [Member]
Segment Reporting Information [Line Items]
Sales	4,747,000	5,873,000	10,268,000	12,846,000
Cost of sales	3,280,000	5,414,000	7,000,000	11,012,000
Gross profit	1,467,000	459,000	3,268,000	1,834,000
Selling, general and administrative expenses	938,000	1,903,000	1,996,000	3,877,000
Operating loss	529,000	(1,444,000)	1,272,000	(2,043,000)
Other income (expense)	2,980,000	(4,000)	2,989,000	20,000
Income (Loss) from operations before income taxes	3,509,000	(1,448,000)	4,261,000	(2,023,000)
Depreciation and amortization	220,000	386,000	513,000	799,000
Capital expenditures		232,000	16,000	459,000
Assets	9,747,000	15,748,000	9,747,000	15,748,000
JDL Technologies [Member]
Segment Reporting Information [Line Items]
Sales	951,000	913,000	3,160,000	1,622,000
Cost of sales	700,000	841,000	2,040,000	1,568,000
Gross profit	251,000	72,000	1,120,000	54,000
Selling, general and administrative expenses	331,000	422,000	707,000	845,000
Operating loss	(80,000)	(350,000)	413,000	(791,000)
Other income (expense)		3,000	(10,000)	3,000
Income (Loss) from operations before income taxes	(80,000)	(347,000)	403,000	(788,000)
Depreciation and amortization	26,000	41,000	54,000	105,000
Capital expenditures			36,000
Assets	1,658,000	912,000	1,658,000	912,000
Net2Edge [Member]
Segment Reporting Information [Line Items]
Sales	796,000	681,000	1,244,000	846,000
Cost of sales	543,000	501,000	771,000	563,000
Gross profit	253,000	180,000	473,000	283,000
Selling, general and administrative expenses	760,000	820,000	1,508,000	1,724,000
Operating loss	(507,000)	(640,000)	(1,035,000)	(1,441,000)
Other income (expense)	3,000	20,000	2,000	12,000
Income (Loss) from operations before income taxes	(504,000)	(620,000)	(1,033,000)	(1,429,000)
Depreciation and amortization	18,000	14,000	38,000	28,000
Capital expenditures	1,000	98,000	8,000	115,000
Assets	3,024,000	2,468,000	3,024,000	2,468,000
Other [Member]
Segment Reporting Information [Line Items]
Sales
Cost of sales
Gross profit
Selling, general and administrative expenses	574,000	529,000	1,160,000	1,124,000
Operating loss	(574,000)	(529,000)	(1,160,000)	(1,124,000)
Other income (expense)	62,000	44,000	98,000	152,000
Income (Loss) from operations before income taxes	(512,000)	(485,000)	(1,062,000)	(972,000)
Depreciation and amortization
Capital expenditures	28,000		196,000
Assets	$ 23,276,000	$ 20,780,000	$ 23,276,000	$ 20,780,000

Net Income (Loss) Per Share (Na

Net Income (Loss) Per Share (Narrative) (Details) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
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	2,530	0	0	0
Shares not included in the computation of diluted earnings per share	1,173,365	1,150,107	1,223,365	1,178,607
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	207,573	309,819	207,573	309,819

Fair Value Measurements (Narrat

Fair Value Measurements (Narrative) (Details)	6 Months Ended
	Jun. 30, 2019USD ($)
Fair Value Measurements [Abstract]
Transfers between levels	$ 0

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	$ 9,540
Investments	4,001
Assets (Liabilities) Net, fair value	13,541	$ 8,428
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	9,540
Assets (Liabilities) Net, fair value	9,540	8,428
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	4,001
Assets (Liabilities) Net, fair value	4,001
Money Market Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	9,540	8,428
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	9,540	$ 8,428
Commercial Paper [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	1,992
Commercial Paper [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	1,992
Corporate Notes/Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	2,009
Corporate Notes/Bonds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investments	$ 2,009

General Commitments (Narrative)

General Commitments (Narrative) (Details) - USD ($)	Aug. 02, 2018	Jun. 30, 2019
Other Commitments [Line Items]
Sale of building, purchase agreement, consideration amount	$ 10,000,000
Purchase agreement, buyer to complete due diligence, period	180 days
Restricted cash		$ 625,664
Purchase Agreement [Member]
Other Commitments [Line Items]
Restricted cash		$ 125,000

Disposition Of Assets (Narrativ

Disposition Of Assets (Narrative) (Details) - USD ($)	Apr. 05, 2019	Jun. 30, 2019	Jun. 30, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of FutureLink Fiber business line	$ 5,000,000		$ 4,857,214
Restricted cash		$ 625,664	625,664
Gain on sale of FutureLink Fiber business line		2,966,906	2,966,906
Suttle FutureLink Fiber Business Line [Member] | Disposal Group, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Restricted cash		$ 500,000	$ 500,000