Commitments and Contingencies - Additional Information (Detail) - USD ($)	1 Months Ended			3 Months Ended		9 Months Ended
	Jun. 30, 2022	Nov. 30, 2021	Nov. 30, 2017	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Jul. 01, 2013
Commitments And Contingencies [Line Items]
Milestone liabilities				$ 3,772,000		$ 3,772,000		$ 4,524,000
Operating lease costs				422,000	$ 408,000	1,253,000	$ 1,037,000
Financing liability				104,100,000		104,100,000		104,100,000
Financing liability, long term				94,375,000		94,375,000		94,512,000
Financing liability, short term				9,747,000		$ 9,747,000		9,565,000
Supply Agreement expiration period						Dec. 31, 2027
Supply Agreement renewal period						2 years
Cash paid for interest on financing liability						$ 7,200,000	$ 3,800,000
Equipment | V-Go
Commitments And Contingencies [Line Items]
Embedded lease cost per month	$ 14,370
Master Lease Agreement with Enterprise | Vehicle Leases
Commitments And Contingencies [Line Items]
Operating lease rent expenses						$ 100,000
Marlborough Lease | Buildings
Commitments And Contingencies [Line Items]
Operating lease rent expenses	$ 28,895
Percentage of annual increase in lease payment	3.00%
Casper L L C
Commitments And Contingencies [Line Items]
Sale price		$ 102,300,000
Lease initial term		20 years
Lease renewal option		4 years
Lease renewal options		renewal options of five years
Lessee,option to extend [true false]		true
Operating lease costs		$ 9,500,000
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.
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.
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									$ 55,000,000
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
Barings Global Milestone Rights
Commitments And Contingencies [Line Items]
Remaining milestone rights liability				3,900,000		$ 3,900,000		4,800,000
Milestone rights liability, current				800,000		800,000		900,000
Milestone liabilities				$ 3,100,000		$ 3,100,000		$ 3,900,000