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Note 8 - Segment Reporting - Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Revenue $ 10,597 $ 4,660  
Income (loss) from operations (277) 50  
Depreciation expense 96 58  
Interest expense, net 82 109  
Total assets 10,121   $ 17,567
Facilities Segment [Member]      
Revenue 2,099 2,890  
Facilities Segment [Member] | Operating Segments [Member]      
Revenue 2,099 2,890  
Income (loss) from operations 19 510  
Depreciation expense 51 32  
Interest expense, net 44 60  
Total assets 1,026   939
System Integration Services Segment [Member]      
Revenue 8,498 1,770  
System Integration Services Segment [Member] | Operating Segments [Member]      
Revenue 8,498 1,770  
Income (loss) from operations (296) (460)  
Depreciation expense 45 26  
Interest expense, net 38 $ 49  
Total assets 1,955   6,120
Other Segments [Member] | Operating Segments [Member]      
Total assets $ 7,140   $ 10,508