Condensed Consolidated Balance Sheet Components - Internal-Use Software, Property and Equipment, Net (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	$ 11,177,000		$ 11,177,000		$ 10,476,000
Less: accumulated depreciation and amortization	(7,677,000)		(7,677,000)		(5,284,000)
Internal-use software and property and equipment, net	3,500,000		3,500,000		5,192,000
Depreciation expense	200,000	$ 100,000	400,000	$ 200,000
Capitalized internal-use software amortization expense	600,000	700,000	2,000,000.0	2,100,000
Impairment loss on internally developed software	0	$ 0.0	0	$ 500,000
Capitalized internal-use software
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	9,160,000		9,160,000		9,000,000
Leasehold improvements
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	1,275,000		1,275,000		866,000
Furniture and fixtures
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	579,000		579,000		485,000
Computer equipment
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	$ 163,000		$ 163,000		$ 125,000