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Acquisition Contract Liabilities (Details Narrative)
$ in Millions
Mar. 25, 2019
USD ($)
Monte Carlo Simulation Model [Member] | Measurement Input, Discount Rate [Member]  
Restructuring Cost and Reserve [Line Items]  
Derivative liability measuremnet input 0.060
Cutanea Life Sciences Inc [Member]  
Restructuring Cost and Reserve [Line Items]  
Equity interest in acquiree, percentage 100.00%
Biofrontera AG [Member]  
Restructuring Cost and Reserve [Line Items]  
Equity interest in acquiree, percentage 29.90%
Maruho Co Ltd [Member]  
Restructuring Cost and Reserve [Line Items]  
Sale of equity estimated profits contingent consideration $ 6.5
Start-up cost financing interest rate 6.00%
Start-up cost financing term 57 months
Start-up cost financing maturity date Dec. 31, 2023
Maruho Co Ltd [Member] | Share Purchase Agreement [Member]  
Restructuring Cost and Reserve [Line Items]  
Start-up cost financing $ 7.3
Xepi [Member]  
Restructuring Cost and Reserve [Line Items]  
Start-up cost financing 7.3
Non-interest bearing start-up cost financing $ 1.7