Subsequent Events	3 Months Ended
Mar. 31, 2022
Subsequent Events
Subsequent Events	11. Subsequent Events On April 19, 2022, the Company terminated its Korea Lease effective April 30, 2022. On May11, 2022, the Company terminated the 2018 Plan. As of the date of termination, there were no outstanding awards under the 2018 Plan. As a result of the termination, the 3,180,379 shares previously reserved for grants under the 2018 Plan will no longer be available for grants.

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.

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

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