Income Taxes - Summary of Significant Components of Deferred Tax Assets (Detail) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Acquired technology	$ 543,000	$ 1,089,000
Stock compensation expense	1,413,000	1,139,000
Lease liability	3,000	59,000
Accruals and other	110,000	214,000
Total deferred tax assets	2,069,000	2,501,000
Deferred tax liabilities:
Right of use asset	(3,000)	(59,000)
Total deferred tax liabilities	(3,000)	(59,000)
Less valuation allowance	$ (2,066,000)	$ (2,442,000)