Financial Instruments and Fair Value Measurements - Measurements on Recurring Basis (Details) - Recurring basis - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financial instruments and fair value measurements
Cash equivalents	$ 31,645
Total	59,576	$ 59,809
Level 1
Financial instruments and fair value measurements
Cash equivalents	31,645
Total	59,576	59,809
Money market fund
Financial instruments and fair value measurements
Cash equivalents	1,703	19,233
Money market fund \| Level 1
Financial instruments and fair value measurements
Cash equivalents	1,703	19,233
U.S. Treasury Bills
Financial instruments and fair value measurements
Cash equivalents	29,942
U.S. Treasury Bills \| Level 1
Financial instruments and fair value measurements
Cash equivalents	29,942
Available-for-sale, Debt securities \| U.S. Treasury Bills
Financial instruments and fair value measurements
Investments	27,931	40,576
Available-for-sale, Debt securities \| U.S. Treasury Bills \| Level 1
Financial instruments and fair value measurements
Investments	$ 27,931	$ 40,576

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-3

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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