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Defined Contribution Plan	9 Months Ended
	Sep. 30, 2021
Retirement Benefits [Abstract]
Defined Contribution Plan	Defined Contribution Plan The Company sponsors a defined contribution retirement plan qualifying under Section 401(k) of the Internal Revenue Code of 1986. The Company did not make any employer contributions to the plan during the three and nine months ended September 30, 2021 and 2020. The Company has a deferred compensation plan for employees located in the United Kingdom that qualifies under the Pensions Act 2008, in which the Company contributes 3% of eligible U.K. employees’ salaries. As of September 30, 2021 and December 31, 2020, the liability under this plan was immaterial.

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- References

No definition available.

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- Definition

The entire disclosure for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-URI http://asc.fasb.org/subtopic&trid=2235116

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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