Related Party Transactions - Summary of Weighted-Average Remaining Lease Term and Weighted-Average Discount Rate (Detail)	Sep. 30, 2023	Dec. 31, 2022
Related Party Transaction [Line Items]
weighted-average remaining lease term	6 years 8 months 12 days	7 years 10 months 24 days
weighted-average discount rate	9.80%	11.90%
UMD [Member]
Related Party Transaction [Line Items]
weighted-average remaining lease term	7 years 2 months 12 days	7 years 10 months 24 days
weighted-average discount rate	11.90%	11.90%