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Acquisition of RareGen LLC (now Liquidia PAH, LLC) (Details Textual) - USD ($)
3 Months Ended
Dec. 31, 2020
Nov. 18, 2020
Mar. 31, 2021
Business Acquisition [Line Items]      
Common stock, par value (in dollars per share) $ 0.001   $ 0.001
Contract acquisition costs $ 12,792,491   $ 12,034,436
Goodwill $ 3,903,282   $ 3,903,282
PBM [Member] | Liquidia Corporation [Member]      
Business Acquisition [Line Items]      
Related Party Ownership Percentage     10.00%
Merger With RareGen LLC [Member]      
Business Acquisition [Line Items]      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) 5,550,000 6,166,666  
Common stock, par value (in dollars per share)   $ 0.001  
Number of common units exchanged, representing all of the issued and outstanding RareGen equity   10,000  
Cash threshold amount used to determine the pro-rata portion of RareGen cash at closing that RareGen members received   $ 1,000,000  
Business Combination, Consideration Transferred, Total   $ 20,843,331  
Business Acquisition, Share Price (in dollars per share)   $ 3.38  
Contract acquisition costs $ 12,792,491 $ 12,980,000 $ 12,034,436
Intangible asset   5,620,000  
Business Combination, Amortization Expense     758,056
Amortization of Intangible Assets, Total     328,218
Goodwill   3,903,282  
Goodwill expected to be tax deductible   0  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Refund Liability   2,696,000  
Amount of refund liability offset against accounts receivable from Sandoz $ 927,136   $ 826,468
Business Combination, Indemnification Assets, Amount as of Acquisition Date   $ 1,065,538  
Merger With RareGen LLC [Member] | Holdback Shares [Member]      
Business Acquisition [Line Items]      
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)   616,666