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Borrowings - MidCap Credit Facility - Additional Information (Detail)
1 Months Ended 12 Months Ended
Apr. 22, 2021
USD ($)
Aug. 06, 2019
Apr. 30, 2021
USD ($)
Dec. 31, 2020
Installment
$ / shares
shares
Aug. 31, 2019
USD ($)
Installment
$ / shares
shares
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
$ / shares
shares
Oct. 31, 2021
shares
Mar. 31, 2021
USD ($)
Debt Instrument [Line Items]                    
Maturity date Dec. 31, 2025       Nov. 03, 2024          
Debt instrument payment term description           Principal on each term loan advance under Tranche 1 and Tranche 2 are payable in 24 equal monthly installments beginning September 1, 2023, until paid in full on August 1, 2025.        
Unamortized debt discount           $ 235,000        
On or After April 23, 2022 Through and Including April 22, 2023                    
Debt Instrument [Line Items]                    
Early Termination Fees Percentage           2.00%        
On or Prior to April 22, 2022                    
Debt Instrument [Line Items]                    
Early Termination Fees Percentage           3.00%        
On or After April 23, 2023 Through Maturity Date                    
Debt Instrument [Line Items]                    
Early Termination Fees Percentage           1.00%        
MidCap Credit Facility                    
Debt Instrument [Line Items]                    
Prepaid of borrowing     $ 10,000,000.0       $ 10,000,000.0      
Principal prepayment against outstanding term loans $ 10,000,000.0                  
Debt instrument, prepayment penalty 1,000,000.0           1,000,000.0      
Unamortized debt discount           $ 200,000 400,000      
Debt Instrument unamortized prepayment penalty.           $ 500,000 $ 800,000      
Minimum cash covenant         $ 90,000,000.0          
Interest on loans increased, percentage   2.00%                
Term loan advance percentage of amount drawdown         3.25%          
Tranche 1                    
Debt Instrument [Line Items]                    
Maturity date         Aug. 01, 2025          
Debt Instrument, Interest Rate, Effective Percentage         8.25%          
Debt Instrument Payment Number of Equal Monthly Installments | Installment         24          
Line Of Credit Facility Principal Payment Start Date         Sep. 01, 2023          
Tranche 1 | LIBOR                    
Debt Instrument [Line Items]                    
Debt Instrument, Basis Spread on Variable Rate         6.25%          
Interest rate floor         1.00%          
Tranche 1 | MidCap Credit Facility                    
Debt Instrument [Line Items]                    
Advance of borrowing         $ 40,000,000.0          
Warrants to purchase of common stock | shares         1,171,614       1,171,614  
Exercise price of warrants | $ / shares         $ 1.11          
Tranche 2                    
Debt Instrument [Line Items]                    
Maturity date       Aug. 01, 2025            
Debt Instrument, Interest Rate, Effective Percentage       8.25%       8.25%    
Debt Instrument Payment Number of Equal Monthly Installments | Installment       24            
Line Of Credit Facility Principal Payment Start Date       Sep. 01, 2023            
Tranche 2 | LIBOR                    
Debt Instrument [Line Items]                    
Debt Instrument, Basis Spread on Variable Rate       6.25%            
Interest rate floor       1.00%            
Tranche 2 | MidCap Credit Facility                    
Debt Instrument [Line Items]                    
Advance of borrowing               $ 10,000,000.0    
Warrants to purchase of common stock | shares       111,853       111,853 111,853  
Exercise price of warrants | $ / shares       $ 2.91       $ 2.91    
Tranche 3 | MidCap Credit Facility                    
Debt Instrument [Line Items]                    
Amount available under credit facility $ 60,000,000.0       $ 60,000,000.0         $ 25,000,000.0
Debt instrument advance available date Jun. 30, 2022                  
Debt instrument extended interest-only date Sep. 01, 2023                  
Maturity date Aug. 01, 2025                  
Debt instrument payment term description           The Mid Cap credit facility has been amended several times, including in April 2021, when the parties agreed to, among other things, (i) increase the amount available under the third advance from $25.0 million to $60.0 million and extend the date through which the third advance is available to June 30, 2022, (ii) amend the conditions to the third advance of $60.0 million being available to draw, including certain milestone conditions associated with Tyvaso DPI, (iii) remove the Company’s obligation to issue a warrant to purchase shares of the Company’s common stock upon drawing down the third advance, (iv) extend the interest-only period until September 1, 2023 and extend the maturity date until August 1, 2025, (v) amend the financial covenant relating to trailing 12 month minimum Afrezza net revenue, (vi) decrease the minimum cash covenant, (vii) decrease the interest rate on any amounts outstanding, now or in the future, under the MidCap credit facility, (viii) permit the Company to make certain acquisitions, subject to requirements, and (ix) permit the Company to make investments of up to an additional $9.0 million so long as the Company has $90.0 million or more of unrestricted cash and short-term investments following such investment.        
Maximum value of additional investment limit $ 9,000,000.0                  
Debt instrument minimum unrestricted cash and short-term investments $ 90,000,000.0