Annual report pursuant to Section 13 and 15(d)

Revenue Recognition (Schedule of Disaggregation of Revenues) (Details)

v3.20.1
Revenue Recognition (Schedule of Disaggregation of Revenues) (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                    
Revenues $ 15,364,000 $ 13,622,000 $ 10,704,000 $ 11,216,000 $ 13,121,000 $ 10,283,000 $ 9,165,000 $ 9,800,000 $ 50,906,179 $ 42,369,232
Transition Networks [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 44,860,000 36,470,000
Transition Networks [Member] | North America [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 39,748,000 31,059,000
Transition Networks [Member] | Europe, Middle East, Africa ("EMEA") [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 2,651,000 2,017,000
Transition Networks [Member] | Rest of World [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 2,461,000 3,394,000
Transition Networks [Member] | Media Converters [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 20,005,000 20,226,000
Transition Networks [Member] | Ethernet Switches and Adapters [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 18,845,000 9,694,000
Transition Networks [Member] | Other Products [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 6,010,000 6,550,000
JDL Technologies [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 4,741,000 5,134,000
JDL Technologies [Member] | Education [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 1,926,000 2,651,000
JDL Technologies [Member] | Healthcare and Commercial Clients [Member]                    
Disaggregation of Revenue [Line Items]                    
Revenues                 $ 2,815,000 $ 2,483,000