Goodwill and Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Finite-lived intangible assets:
Gross Carrying Amount	$ 21,667	$ 21,667
Accumulated Amortization	(17,856)	(14,920)
Net Carrying Amount	3,811	6,747
Indefinite-lived intangible assets:
Indefinite-lived intangible assets	2,224	2,224
Goodwill:
Goodwill, gross	120,948	120,948
Goodwill	120,948	120,948
Gross Carrying Amount	144,839	144,839
Accumulated Amortization	(17,856)	(14,920)
Net Carrying Amount	126,983	129,919
Trade name - website domain
Indefinite-lived intangible assets:
Indefinite-lived intangible assets	$ 2,224	$ 2,224
Developed technology
Finite-lived intangible assets:
Weighted Average Remaining Amortization Period	1 month 6 days	9 months 18 days
Gross Carrying Amount	$ 13,200	$ 13,200
Accumulated Amortization	(12,909)	(10,820)
Net Carrying Amount	291	2,380
Goodwill:
Accumulated Amortization	$ (12,909)	$ (10,820)
Customer relationships
Finite-lived intangible assets:
Weighted Average Remaining Amortization Period	5 years	5 years 4 months 24 days
Gross Carrying Amount	$ 7,507	$ 7,507
Accumulated Amortization	(4,371)	(3,669)
Net Carrying Amount	3,136	3,838
Goodwill:
Accumulated Amortization	$ (4,371)	$ (3,669)
Launched in-process research and development assets
Finite-lived intangible assets:
Weighted Average Remaining Amortization Period	2 years	2 years 8 months 12 days
Gross Carrying Amount	$ 960	$ 960
Accumulated Amortization	(576)	(431)
Net Carrying Amount	384	529
Goodwill:
Accumulated Amortization	$ (576)	$ (431)