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Investment in Omnimetrix (Details Narrative) - USD ($)
$ in Thousands
1 Months Ended
Jul. 02, 2019
Dec. 31, 2015
Dec. 31, 2020
Payments to repurchase of preferred stock $ 1,273    
Unpaid dividend payment $ 323    
Omnimetrix LLC [Member] | Minimum [Member]      
Percentage of ownership in Omni Metrix, LLC     80.00%
Omnimetrix LLC [Member] | Maximum [Member]      
Percentage of ownership in Omni Metrix, LLC 99.00%    
CEO [Member] | Omnimetrix LLC [Member]      
Percentage of ownership in Omni Metrix, LLC 1.00%    
OMX Holdings, Inc [Member]      
Percentage acquired by one of the company's directors   20.00%  
Purchase of Omni Metrix preferred stock   $ 1,000  
OMX Holdings, Inc [Member] | Minimum [Member]      
Percentage of ownership in Omni Metrix, LLC 80.00%    
OMX Holdings, Inc [Member] | Maximum [Member]      
Percentage of ownership in Omni Metrix, LLC 99.00%    
OMX Holdings, Inc [Member] | Investor [Member]      
Investment     $ 1,000
OMX Holdings, Inc [Member] | CEO [Member]      
Percentage of ownership in Omni Metrix, LLC 1.00%    
Omnimetrix LLC [Member]      
Percentage of ownership in Omni Metrix, LLC 100.00% 100.00%