Commitments and Contingencies - Additional Information (Detail) € in Millions		1 Months Ended						3 Months Ended		9 Months Ended		12 Months Ended
		Jul. 31, 2024 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($) ConsecutiveMonth	Feb. 28, 2023 USD ($)	Jun. 30, 2022 USD ($)	Nov. 30, 2021 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2024 EUR (€)	Jul. 08, 2024	Jul. 01, 2013 USD ($)
Commitments And Contingencies [Line Items]
Operating lease costs								$ 719,000	$ 422,000	$ 1,417,000	$ 1,253,000
Operating lease weighted average discount rate				7.25%				7.25%		7.25%		7.25%	7.25%	7.25%
Financing Liability				$ 104,100,000				$ 104,000,000		$ 104,000,000		$ 104,100,000
Financing liability - long term				94,319,000				94,005,000		94,005,000		94,319,000
Financing liability - current				9,809,000				9,998,000		$ 9,998,000		9,809,000
Supply Agreement expiration period										Dec. 31, 2034
Supply Agreement renewal period										2 years
Lease monthly payments			$ 100,000
Percentage of annual increment on lease			3.00%
Milestone liabilities				3,452,000				2,813,000		$ 2,813,000		3,452,000
Returns reserve for acquired product	[1]			601,000				1,468,000		1,468,000		601,000
Losses on estimated returns of acquired product										1,400,000
Milestone payments										752,000	924,000
Loss on purchase commitments | €													€ 56.6
Insulin
Commitments And Contingencies [Line Items]
Loss on purchase commitments				$ 64,800,000				62,600,000		62,600,000		64,800,000
Tyvaso DPI
Commitments And Contingencies [Line Items]
Royalty commencement date				Oct. 01, 2023
Royalty termination date				Dec. 31, 2042
Pulmatrix, Inc
Commitments And Contingencies [Line Items]
Lease renewal option		5 years
Landlord-funded tenant improvements payable		$ 700,000
Landlord-funded tenant improvements payable per month		6,000,000,000
Lease monthly payments		$ 101,282
Percentage of annual increment on lease		3.00%
Vehicle Leases | Master Lease Agreement with Enterprise
Commitments And Contingencies [Line Items]
Operating lease rent expenses										$ 100,000
Buildings | Marlborough Lease
Commitments And Contingencies [Line Items]
Operating lease rent expenses						$ 28,895
Percentage of annual increase in lease payment						3.00%
Equipment | V-Go
Commitments And Contingencies [Line Items]
Lease Cost						$ 14,370
Casper L L C
Commitments And Contingencies [Line Items]
Sale price							$ 102,300,000
Lease initial term							20 years
Lease renewal options							renewal options of five years
Lessee,option to extend [true false]							true
Operating lease costs							$ 9,500,000
Operating lease weighted average discount rate							9.00%
Lease, description							The total annual rent under the Lease starts at approximately $9.5 million per year, subject to a 50% rent abatement during the first year of the Lease, and will increase annually by (i) 2.5% in the second through fifth year of the Lease and (ii) 3% in the sixth and each subsequent year of the Lease, including any renewal term, utilizing a weighted average discount rate of 9.0%.
Security deposit							$ 2,000,000.0
Lease repurchase description							the Company has four options to repurchase the Property, in 2026, 2031, 2036 and 2041, for the greater of (i) $102.3 million and (ii) the fair market value of the Property.
Maximum
Commitments And Contingencies [Line Items]
Effective interest rate										11.50%
Minimum
Commitments And Contingencies [Line Items]
Effective interest rate										8.80%
Minimum | Casper L L C
Commitments And Contingencies [Line Items]
Lease repurchase, amount							$ 102,300,000
Deerfield | Milestone Rights Liability
Commitments And Contingencies [Line Items]
Contingent liability remain payable															$ 50,000,000
Remaining milestone rights liability			$ 3,200,000	$ 3,900,000								3,900,000
Milestone rights liability, current				800,000				700,000		$ 700,000		800,000
Milestone liabilities				3,100,000				$ 2,500,000		2,500,000		3,100,000
Milestone payments										$ 5,000,000	$ 5,000,000
Deerfield | Milestone Rights Liability | Maximum
Commitments And Contingencies [Line Items]
Contingent liability for milestone payments															$ 90,000,000
Russell Ranch Road II LLC | Office Lease
Commitments And Contingencies [Line Items]
Operating lease rent expenses					$ 79,543
Percentage of annual increase in lease payment					3.00%
Description of right to extension of lease term										The Company has no further right to extend the lease term beyond July 31, 2028.
Russell Ranch Road II LLC | Maximum | Office Lease
Commitments And Contingencies [Line Items]
Reimbursement for tenant improvements					$ 900,000
Additional base rent concession					$ 700,000
Sagard
Commitments And Contingencies [Line Items]
Upfront proceeds				150,000,000
Reimbursements				$ 400,000
Percentage of royalty on future net sales				1.00%
Unamortized transaction costs										$ 4,200,000		$ 4,400,000
Sagard | Tyvaso DPI
Commitments And Contingencies [Line Items]
Purchase price				$ 200,000,000
Sagard | Net Sales Threshold A | Tyvaso DPI
Commitments And Contingencies [Line Items]
Milestone payments				50,000,000
Net sales				1,900,000,000
Sagard | Net Sales Threshold B | Tyvaso DPI
Commitments And Contingencies [Line Items]
Milestone payments				45,000,000
Net sales				$ 2,300,000,000
Number of consecutive months | ConsecutiveMonth				12
Sagard | Net Sales Thresholds A and B | Tyvaso DPI
Commitments And Contingencies [Line Items]
Net sales				$ 3,500,000,000
Sagard | Remainder of Year
Commitments And Contingencies [Line Items]
Royalties				$ 0
Sagard | Royalty Liability
Commitments And Contingencies [Line Items]
Royalty rights				1.00%
Transaction costs				$ 4,400,000
Percentage of Future Royalty Revenues				10.00%

[1] See Note 15 – Commitments and Contingencies under Loss Contingencies — Returns Reserve for Acquired Product.