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Debt (Details)
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2019
EUR (€)
Apr. 30, 2017
EUR (€)
Mar. 31, 2022
USD ($)
Mar. 31, 2022
EUR (€)
Dec. 31, 2021
USD ($)
Dec. 31, 2016
EUR (€)
Mar. 31, 2022
EUR (€)
Jul. 09, 2020
EUR (€)
Apr. 22, 2020
USD ($)
Jun. 30, 2018
EUR (€)
EIB [Member]                    
Debt (Details) [Line Items]                    
Fund drawn period           36 months        
Debt Instrument, Term           5 years        
Percentage of participation percentage interest 2.10%                  
Short-Term Debt, Maximum Amount Outstanding During Period | $     $ 24,957,409              
Interest Payable | $     $ 4,975,609              
EIB debt financing facility [Member]                    
Debt (Details) [Line Items]                    
Defer total interest payments € 15,800,000                  
PPP [Member]                    
Debt (Details) [Line Items]                    
Debt Instrument, Face Amount (in Dollars) | $                 $ 879,630  
Percentage of interest accrues     1.00% 1.00%            
Interest Expense, Debt (in Dollars) | $     $ 1,269,581   $ 1,164,982          
PPP [Member] | Subsidiaries [Member]                    
Debt (Details) [Line Items]                    
Debt Instrument, Face Amount (in Dollars) | $                 $ 259,353  
First Tranche [Member] | EIB [Member]                    
Debt (Details) [Line Items]                    
Debt Instrument, Interest Rate, Basis for Effective Rate   EURIBOR plus 4%                
Debt Instrument, Interest Rate, Stated Percentage   6.00%                
OpGen's equity value [Member] | EIB [Member]                    
Debt (Details) [Line Items]                    
Percentage of participation percentage interest 0.30%                  
Euro Member Countries, Euro | EIB [Member]                    
Debt (Details) [Line Items]                    
Unsecured Debt           € 25,000,000        
Amount of cumulative equity capital raised € 15,000,000                  
Short-Term Debt, Maximum Amount Outstanding During Period       € 22,482,127            
Interest Payable             € 4,482,127      
Euro Member Countries, Euro | First Tranche [Member] | EIB [Member]                    
Debt (Details) [Line Items]                    
Unsecured Debt   € 10,000,000                
Euro Member Countries, Euro | Second Tranche [Member] | EIB [Member]                    
Debt (Details) [Line Items]                    
Unsecured Debt                   € 3,000,000
Euro Member Countries, Euro | Third Tranche [Member] | EIB [Member]                    
Debt (Details) [Line Items]                    
Unsecured Debt € 5,000,000             € 5,000,000