Restricted Cash	12 Months Ended
Dec. 31, 2022
Cash and Cash Equivalents [Abstract]
Restricted Cash	Restricted CashAs of December 31, 2022 and 2021 the Company had restricted cash of $0.4 million and $1.0 million, respectively, held as letters of credit for the benefit of its current and former landlords. The Company's Boston, Massachusetts sublease expires on January 31, 2026, and the related letter of credit of $0.4 million was classified within other non-current assets on the consolidated balance sheet as of December 31, 2022 and 2021. The Company's Cambridge, Massachusetts sublease expired on December 31, 2021, and the related letter of credit of $0.6 million was classified within prepaid expenses and other current assets on the consolidated balance sheet as of December 31, 2021.

The entire disclosure for cash and cash equivalent footnotes, which may include the types of deposits and money market instruments, applicable carrying amounts, restricted amounts and compensating balance arrangements. Cash and equivalents include: (1) currency on hand (2) demand deposits with banks or financial institutions (3) other kinds of accounts that have the general characteristics of demand deposits (4) short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Generally, only investments maturing within three months from the date of acquisition qualify.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(1))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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