Leases - Additional Information (Details)			1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 17, 2021	Oct. 15, 2021	Jun. 30, 2022	Sep. 30, 2022 USD ($) ft²	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) ft²	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Apr. 23, 2019 ft²	Mar. 05, 2019 ft²	Apr. 01, 2018 ft²	Mar. 06, 2018 ft²
Lessee Lease Description [Line Items]
Operating lease right of use asset | $				$ 300,000		$ 300,000		$ 400,000
Operating lease liability | $				$ 285,717		$ 285,717		$ 393,837
Operating lease discount rate				8.00%		8.00%		10.00%
Operating lease, weighted average remaining lease term				2 years 7 months 6 days		2 years 7 months 6 days
Operating lease, cash payment made | $				$ 27,000	$ 100,000	$ 200,000	$ 200,000
Operating lease expense | $				$ 44,000	$ 100,000	$ 200,000	$ 200,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]				Other non-current assets		Other non-current assets
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]				us-gaap:OtherLiabilities		us-gaap:OtherLiabilities
Newton Lease
Lessee Lease Description [Line Items]
Lease expiration date						May 31, 2022
Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Mar. 06, 2018
Lease commencement date						Oct. 01, 2018
Square feet of office space leased												2,760
Additional Newton Lease
Lessee Lease Description [Line Items]
Lease expiration date		Dec. 31, 2022
Additional Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Mar. 05, 2019
Lease commencement date						Jun. 01, 2019
Square feet of office space leased										1,600
Amendment of Newton Lease
Lessee Lease Description [Line Items]
Reduced area of land				1,600		1,600
Amendment of Newton Lease | Newton, Massachusetts
Lessee Lease Description [Line Items]
Lease agreement date						Oct. 15, 2021
Bend Lease | Oregon
Lessee Lease Description [Line Items]
Lease agreement date						Apr. 01, 2018
Square feet of office space leased											2,288
Additional Bend Lease | Oregon
Lessee Lease Description [Line Items]
Lease agreement date						Apr. 23, 2019
Lease commencement date						May 01, 2019
Square feet of office space leased									1,389
Modified Bend Lease
Lessee Lease Description [Line Items]
Lease agreement date						Nov. 17, 2021
Lease expiration date	Jun. 30, 2022		Jun. 30, 2025
Lease, existence of option to extend						true
Lease, option to extend						On November 17, 2021, the Company entered into a lease agreement to extend the term of the Bend Lease and the Additional Bend Lease to June 30, 2022 and to further extend the term either (1) until June 30, 2027 if FDA approval of ACER-001 was received in June 2022, or (2) until June 30, 2025 if FDA approval of ACER-001 was not received in June 2022