Income Taxes - Summary of Significant Components of Deferred Tax Assets (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Acquired technology	$ 80,000	$ 81,000
Stock compensation expense	846,000	574,000
Lease liability	39,000
Accruals and other	237,000	244,000
Total deferred tax assets	1,202,000	899,000
Deferred tax liabilities:
Right of use asset	(39,000)
Total deferred tax liabilities	(39,000)
Less valuation allowance	$ (1,163,000)	$ (899,000)