Goodwill and Intangible Assets, Net - Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,667	$ 21,667
Accumulated Amortization	(15,899)	(14,920)
Net Carrying Amount	5,768	6,747
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	2,224	2,224
Intangible Assets, Net (Including Goodwill) [Abstract]
Goodwill, Gross	120,948	120,948
Goodwill	120,948	120,948
Gross Carrying Amount	144,839	144,839
Accumulated Amortization	(15,899)	(14,920)
Net Carrying Amount	128,940	129,919
Trade name - website domain
Indefinite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 2,224	$ 2,224
Developed technology
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	7 months 6 days	9 months 18 days
Gross Carrying Amount	$ 13,200	$ 13,200
Accumulated Amortization	(11,517)	(10,820)
Net Carrying Amount	1,683	2,380
Intangible Assets, Net (Including Goodwill) [Abstract]
Accumulated Amortization	$ (11,517)	$ (10,820)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	5 years 2 months 12 days	5 years 4 months 24 days
Gross Carrying Amount	$ 7,507	$ 7,507
Accumulated Amortization	(3,902)	(3,669)
Net Carrying Amount	3,605	3,838
Intangible Assets, Net (Including Goodwill) [Abstract]
Accumulated Amortization	$ (3,902)	$ (3,669)
Launched in-process research and development assets
Finite-Lived Intangible Assets [Line Items]
Weighted Average Remaining Amortization Period	2 years 6 months	2 years 8 months 12 days
Gross Carrying Amount	$ 960	$ 960
Accumulated Amortization	(480)	(431)
Net Carrying Amount	480	529
Intangible Assets, Net (Including Goodwill) [Abstract]
Accumulated Amortization	$ (480)	$ (431)