Borrowings - MidCap Credit Facility - Additional Information (Detail)			1 Months Ended				12 Months Ended
	Apr. 22, 2021 USD ($)	Aug. 06, 2019	Aug. 31, 2022	Apr. 30, 2021 USD ($)	Dec. 31, 2020 Installment	Aug. 31, 2019 USD ($) Installment	Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)	Dec. 31, 2020 USD ($)	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 that began September 1, 2023, until paid in full on August 1, 2025.
Unamortized debt discount							$ 313,000
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							100,000		$ 200,000
Debt Instrument unamortized prepayment penalty.							$ 200,000		$ 500,000
Minimum cash covenant						$ 90,000,000.0
Interest on loans increased, percentage		2.00%
MidCap Credit Facility | SOFR
Debt Instrument [Line Items]
Interest rate floor			1.00%				1.00%	[1]	1.00%
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 | SOFR
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
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 | SOFR
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
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 MidCap 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

[1] In August 2022, the Company amended the MidCap credit facility and transitioned the benchmark interest rate from LIBOR to the Secured Overnight Financing Rate (“SOFR”). The interest rate prior to the amendment was one-month LIBOR (1% floor) plus 6.25% (cap of 8.25%).