| Schedule of Disaggregation of Revenues | 
 
		
			For the Electronics & Software segment, we analyze revenue by region and product group,which is as follows for the three and six months ended June 30, 2020 and 2019:  
		 
		
			
		 
		
			
		 
		
			
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				| 
					 
						 
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						Electronics & Software Sales by Region 
				 | 
			 
			
				| 
					 
						 
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						Three Months Ended June 30 
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						Six Months Ended June 30 
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				| 
					 
						 
				 | 
				
					 
						  
				 | 
				
					 
						2020 
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						2019 
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						2020 
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						2019 
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				| 
					 
						North America 
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						$ 
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				6,898,000 
				 | 
				
					 
						  
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						$ 
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				8,055,000 
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						$ 
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				14,346,000 
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						$ 
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				14,969,000 
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				| 
					 
						International 
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				1,389,000 
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				 | 
				
					 
						  
				 | 
				1,881,000 
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				 | 
				
					 
						  
				 | 
				2,477,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
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				4,258,000 
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				| 
					 
						 
				 | 
				
					 
						$ 
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				8,287,000 
				 | 
				
					 
						  
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						$ 
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				9,936,000 
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						$ 
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				16,823,000 
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						$ 
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				19,227,000 
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						Electronics & Software Sales by Product Group 
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				| 
					 
						 
				 | 
				
					 
						Three Months Ended June 30 
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						Six Months Ended June 30 
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				| 
					 
						 
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						2020 
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						2019 
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						2020 
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						2019 
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				| 
					 
						Intelligent edge solutions 
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						$ 
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				3,023,000 
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						$ 
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				2,747,000 
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						$ 
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				6,377,000 
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						$ 
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				5,055,000 
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				| 
					 
						Traditional products 
				 | 
				
					 
						  
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				5,264,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
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				7,189,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
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				10,446,000 
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				 | 
				
					 
						  
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				14,172,000 
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				| 
					 
						 
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						$ 
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				8,287,000 
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						$ 
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				9,936,000 
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						$ 
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				16,823,000 
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						$ 
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				19,227,000 
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			For the Services & Support segment, we analyze revenue by customer group and type, which is as follows for the three and six months ended June 30, 2020 and 2019:
		 
		
			
		 
		
			
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				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
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						Services & Support Revenue by Customer Group 
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						Three Months Ended June 30 
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						Six Months Ended June 30 
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				| 
					 
						 
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						2020 
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						2019 
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						2020 
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						2019 
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				| 
					 
						Education 
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						$ 
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				626,000 
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						$ 
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				295,000 
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						$ 
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				719,000 
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						$ 
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				1,768,000 
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				| 
					 
						Healthcare 
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				240,000 
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				183,000 
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				430,000 
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				376,000 
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				| 
					 
						Financial and other commercial clients 
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				474,000 
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				291,000 
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				817,000 
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				550,000 
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				| 
					 
						CSI IT operations 
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				185,000 
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				182,000 
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				386,000 
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				466,000 
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				| 
					 
						 
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						$ 
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				1,525,000 
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						$ 
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				951,000 
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						$ 
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				2,352,000 
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						$ 
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				3,160,000 
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				 | 
				
					 
						  
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				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						  
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				| 
					 
						 
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						Services & Support Revenue by Type 
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				| 
					 
						 
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						Three Months Ended June 30 
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						Six Months Ended June 30 
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				| 
					 
						 
				 | 
				
					 
						  
				 | 
				
					 
						2020 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				
					 
						2019 
				 | 
				
					 
						  
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						2020 
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				 | 
				
					 
						2019 
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				| 
					 
						Project & product revenue 
				 | 
				
					 
						$ 
				 | 
				746,000 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
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				355,000 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				886,000 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				1,994,000 
				 | 
			 
			
				| 
					 
						Services & support revenue 
				 | 
				
					 
						  
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				779,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				596,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				1,466,000 
				 | 
				
					 
						  
				 | 
				
					 
						  
				 | 
				1,166,000 
				 | 
			 
			
				| 
					 
						 
				 | 
				
					 
						$ 
				 | 
				1,525,000 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				951,000 
				 | 
				
					 
						  
				 | 
				
					 
						$ 
				 | 
				2,352,000 
				 | 
				
					 
						  
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						$ 
				 | 
				3,160,000 
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