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Balance Sheet Components - Schedule of Property and Equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 5,168 $ 5,220
Less accumulated depreciation and amortization (4,745) (4,642)
Total property and equipment, net 423 578
Depreciation expense 209 291
Capitalized computer software, amortization 154 39
Office equipment and furnishings    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,164 2,141
Capitalized internal-use software and website development    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 2,196 2,230
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross 763 804
Computer hardware and software    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, gross $ 45 $ 45