Condensed Consolidated Balance Sheet Components - Internal-Use Software, Property and Equipment, Net (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	$ 10,646,000		$ 10,476,000
Less: accumulated depreciation and amortization	(6,106,000)		(5,284,000)
Internal-use software, and property and equipment, net	4,540,000		5,192,000
Depreciation expense	100,000	$ 100,000
Capitalized internal-use software amortization expense	700,000	700,000
Impairment loss on internally developed software	0	$ 500,000
Capitalized internal-use software
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	8,995,000		9,000,000
Leasehold improvements
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	1,030,000		866,000
Furniture and fixtures
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	496,000		485,000
Computer equipment
Public Utility, Property, Plant and Equipment [Line Items]
Internal-use software, and property and equipment	$ 125,000		$ 125,000