Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accounts payable - trade	$ 931	$ 1,411
Payroll and benefits	1,373	1,606
Inventory	69	72
Royalty fees due to unrelated parties	6	51
Consulting	8	79
Rent and utilities	28	127
Audit and tax fees	99	72
Legal	69	58
Other	298	162
Total accounts payable and accrued expenses	$ 2,881	$ 3,638