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Fair Value Measurements (Details)
€ in Millions
1 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2019
EUR (€)
Sep. 30, 2023
Dec. 31, 2022
USD ($)
May 23, 2023
Jul. 09, 2020
EUR (€)
Dec. 31, 2016
EUR (€)
Fair Value Disclosures [Line Items]            
Participation percentage interest         2.10%  
Goodwill impairment expense | $     $ 6,940,549      
Impairment of intangible assets | $     $ 5,407,699      
Fair Value, Recurring [Member] | Curetis GmbH [Member]            
Fair Value Disclosures [Line Items]            
Participation percentage interest 2.10%          
European Investment Bank [Member] | Curetis GmbH [Member] | Share-Based Payment Arrangement, Tranche Three [Member]            
Fair Value Disclosures [Line Items]            
Disbures equity capital         € 5.0  
European Investment Bank [Member] | OpGen's Equity [Member] | Share-Based Payment Arrangement, Tranche Three [Member]            
Fair Value Disclosures [Line Items]            
Maturity period   the Company entered into a Waiver and Amendment Letter which increased the PPI to 0.75% upon maturity between mid-2024 and mid-2025.        
European Investment Bank [Member] | Fair Value, Recurring [Member] | Curetis GmbH [Member]            
Fair Value Disclosures [Line Items]            
Unsecured loan financing facility           € 25.0
European Investment Bank [Member] | Fair Value, Recurring [Member] | Curetis GmbH [Member] | Share-Based Payment Arrangement, Tranche Three [Member]            
Fair Value Disclosures [Line Items]            
Disbures equity capital € 5.0          
Participation percentage interest 2.10%          
European Investment Bank [Member] | Fair Value, Recurring [Member] | Curetis GmbH [Member] | Share-Based Payment Arrangement, Tranche Three [Member] | Minimum [Member]            
Fair Value Disclosures [Line Items]            
EIB waived for curetis to have equity capital raised to disburse the third tranche € 15.0          
European Investment Bank [Member] | Fair Value, Recurring [Member] | OpGen's Equity [Member] | Share-Based Payment Arrangement, Tranche Three [Member]            
Fair Value Disclosures [Line Items]            
Participation percentage interest       0.75% 0.30%  
European Investment Bank [Member] | Fair Value, Recurring [Member] | Curetis GmbH [Member] | Share-Based Payment Arrangement, Tranche Three [Member]            
Fair Value Disclosures [Line Items]            
Disbures equity capital € 5.0