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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) - USD ($)
Dec. 31, 2021
Dec. 31, 2020
Deferred tax assets:    
Accrued bonus $ 376,000 $ 243,000
Fixed assets 0 108,000
Federal credit carryforwards 939,000 331,000
Leases 28,000 0
Start-up costs 39,000 48,000
Deferred tax assets before valuation allowance 1,382,000 730,000
Valuation allowance 1,237,000 560,000
Total deferred tax assets 145,000 170,000
Deferred tax liabilities:    
Intangible assets 90,000 148,000
Fixed assets 47,000 0
Prepaid expenses 8,000 22,000
Total deferred tax liabilities 145,000 170,000
Net deferred tax asset $ 0 $ 0