Annual report pursuant to Section 13 and 15(d)

Balance Sheet Components - Additional Information (Details)

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Balance Sheet Components - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Depreciation and amortization expense $ 79,000 $ 66,000
Property and equipment, gross 1,120,000 1,021,000
Accumulated Depreciation 958,000 $ 879,000
Capital lease    
Property and equipment, gross 32,000  
Accumulated Depreciation $ 72,000