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Subsequent events | 12 Months Ended
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Dec. 31, 2021
Subsequent Events [Abstract] |
Subsequent events | Subsequent events In preparing the consolidated financial statements as of December 31, 2021 and for the fiscal years ended December 31, 2021, 2020, and 2019 the Company has evaluated subsequent events through March 25, 2022, the date the consolidated financial statements were available for issuance. On February 15, 2022, the Company granted 1,683,039 RSUs to employees at a grant date fair value of $14.32 per share that generally vest over a four-year period. On February 28, 2022, the Company completed the second tranche purchase of $5.0 million of preferred stock as a part of its strategic investment in a privately held online education platform technology company.

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- Definition The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -URI http://asc.fasb.org/topic&trid=2122774 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 855 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662 + Details
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