Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accrued Liabilities, Current [Abstract]
Compensation and related costs	$ 1,171	$ 1,667
Professional fees	519	406
Interest expense	242	250
Construction in process	167	131
Machinery and equipment	124	124
Clinical trials and drug development	116	613
Other accrued expenses and other current liabilities	75	75
Total accrued expenses and other current liabilities	$ 2,414	$ 3,266