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Balance Sheet Components - Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 5,220	$ 13,748
Less accumulated depreciation and amortization	(4,642)	(13,091)
Total property and equipment, net	578	657
Depreciation expense	291	418
Capitalized computer software, amortization	39	1
Office equipment and furnishings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,141	5,005
Capitalized internal-use software and website development
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	2,230	4,601
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	804	2,414
Computer hardware and software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 45	$ 1,728

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of expense for amortization of capitalized computer software costs.

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