Related Party Transaction - Additional Information (Details) - Content Sourcing Agreement - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Related Party Transaction [Line Items]
Related party content fees	$ 1,546	$ 1,712	$ 3,176	$ 3,391
Outstanding to educator partner payables	$ 1,546		$ 1,546		$ 1,502

Carrying amount as of the balance sheet date of obligations due all related parties.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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+ Details