XML 66 R15.htm IDEA: XBRL DOCUMENT
v3.25.4

Restricted Cash | 12 Months Ended
--- | ---
Dec. 31, 2025
Cash and Cash Equivalents [Abstract] |
Restricted Cash | 5. Restricted Cash Restricted cash as of December 31, 2025 was held as collateral for a stand-by letter of credit issued by the Company to its Sublandlord (as defined in Note 13) in connection with the current lease for its principal facilities located at 300 Fifth Avenue, Waltham, Massachusetts. For additional information regarding the Company’s lease, refer to Note 13. Cash, cash equivalents, and restricted cash consisted of the following as of December 31, 2025 and December 31, 2024 (in thousands):
| December 31, 2025 |  | December 31, 2024
Cash and cash equivalents | $ | 213,192 |  |  | $ | 34,766 |
Restricted cash | 107 |  |  | — |
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows | $ | 213,299 |  |  | $ | 34,766 |

X
- References No definition available. + Details
Name: | us-gaap_CashAndCashEquivalentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
Name: | us-gaap_CashAndCashEquivalentsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration