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Intangible Assets (Details 1) - USD ($)
Mar. 31, 2020
Dec. 31, 2019
2020 (excluding the three months ended March 31, 2020) $ 301,200  
2021 401,600  
2022 401,600  
2023 371,450  
2024 335,600  
Thereafter 1,482,223  
Total 3,293,673 $ 3,394,073
DGSE    
2020 (excluding the three months ended March 31, 2020) 49,500  
2021 66,000  
2022 66,000  
2023 35,850  
2024 0  
Thereafter 0  
Total 217,350 233,850
ECHG    
2020 (excluding the three months ended March 31, 2020) 251,700  
2021 335,600  
2022 335,600  
2023 335,600  
2024 335,600  
Thereafter 1,482,223  
Total $ 3,076,323 $ 3,160,223