Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	May 31, 2021	Jan. 31, 2021	Jan. 01, 2021	Dec. 31, 2020	Dec. 01, 2020	Mar. 16, 2020	Dec. 31, 2019
Accounting Policies [Line Items]
Noncontrolling Interest, Ownership Percentage	100.00%
Stockholders' Equity	$ 385,959,000				$ 95,368,000			$ 59,638,000
Carrying amount of convertible promissory note	0				800,000
Fair value amount of convertible promissory note					4,600,000
Unamortized debt discount				$ 8,000
Fair Value, Net Asset (Liability)	0
Impairment loss recognized	0
Perception December 2020 Convertible Note Agreement [Member]
Accounting Policies [Line Items]
Debt Instrument, Face Amount						$ 12,000,000.0
First Tranche Funding [Member] | Perception December 2020 Convertible Note Agreement [Member]
Accounting Policies [Line Items]
Debt Instrument, Face Amount			$ 800,000		6,200,000	$ 7,000,000.0
Second Tranche Funding [Member]
Accounting Policies [Line Items]
Debt Instrument, Face Amount		$ 5,000,000.0
Convertible Notes Receivable [Member]
Accounting Policies [Line Items]
Investments by other investor							$ 600,000
Debt Instrument, Face Amount							$ 3,300,000
2018 Convertible Notes [Member]
Accounting Policies [Line Items]
Carrying amount of convertible promissory note	800,000				1,200,000
Fair value amount of convertible promissory note	$ 69,700,000				$ 76,700,000
Minimum [Member]
Accounting Policies [Line Items]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	50.00%