Commitments and Contingencies - Additional Information (Detail) € in Millions		1 Months Ended					3 Months Ended		12 Months Ended
		Jul. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) ConsecutiveMonth	Feb. 28, 2023 USD ($)	Jun. 30, 2022 USD ($)	Nov. 30, 2021 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Mar. 31, 2025 EUR (€)	Jul. 01, 2013 USD ($)
Commitments And Contingencies [Line Items]
Operating lease costs							$ 728,000	$ 348,000
Operating lease weighted average discount rate							7.30%		7.30%	7.30%
Financing Liability							$ 103,800,000		$ 103,900,000
Financing liability - long term							93,665,000		93,877,000
Financing liability - current							$ 10,125,000		10,062,000
Supply Agreement expiration period							Dec. 31, 2034
Supply Agreement renewal period							2 years
Milestone liabilities							$ 2,523,000		2,523,000
Returns reserve for acquired product	[1]						$ 313,000		804,000
Losses on estimated returns of acquired product								$ 1,200,000
Effective interest rate							8.90%
Loss on purchase commitments | €										€ 55.2
Insulin
Commitments And Contingencies [Line Items]
Loss on purchase commitments							$ 60,700,000		58,200,000
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 or (ii) the fair market value of the Property.
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 for milestone payments							5,000,000
Contingent liability remain payable							600,000				$ 50,000,000
Remaining milestone rights liability							3,200,000		3,200,000
Milestone rights liability, current							600,000		600,000
Milestone liabilities							$ 2,500,000		2,500,000
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							$ 4,100,000		$ 4,100,000
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
Number of consecutive months | ConsecutiveMonth			12
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 14 – Commitments and Contingencies under Loss Contingencies — Returns Reserve for Acquired Product.