Acquisitions, Acquired Intangible Assets, and Goodwill - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 13,057	$ 4,226
Accumulated amortization	(1,678)	(1,301)
Net carrying amount	11,379	2,925
Developed technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	3,944	1,194
Accumulated amortization	(315)	(266)
Net carrying amount	3,629	928
Trade name
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	2,276	68
Accumulated amortization	(145)	(30)
Net carrying amount	2,131	38
Content
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,958
Accumulated amortization	(89)
Net carrying amount	1,869
Customer relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	1,500
Accumulated amortization	0
Net carrying amount	1,500
Capitalized internal-use software
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	3,379	2,964
Accumulated amortization	(1,129)	(1,005)
Net carrying amount	$ 2,250	$ 1,959