XML 22 R12.htm IDEA: XBRL DOCUMENT
v3.23.1

Investments | 3 Months Ended
--- | ---
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract] |
Investments | 6. Investments The Company's available-for-sale investments consisted of the following (in thousands):
March 31, 2023 |  | Amortized Cost |  |  | Unrealized Gains |  |  | Unrealized Losses |  |  | Estimated Fair Value |
Short-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 124,250 |  |  | $ | — |  |  | $ | (519 | ) |  | $ | 123,731 |
U.S. agency bonds |  |  | 5,000 |  |  |  | — |  |  |  | (24 | ) |  |  | 4,976 |
Certificates of deposit |  |  | 1,960 |  |  |  | — |  |  |  | (28 | ) |  |  | 1,932 |
Short-term investments |  | $ | 131,210 |  |  | $ | — |  |  | $ | (571 | ) |  | $ | 130,639 |
Long-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 19,237 |  |  | $ | 72 |  |  | $ | — |  |  | $ | 19,309 |
Long-term investments |  | $ | 19,237 |  |  | $ | 72 |  |  | $ | — |  |  | $ | 19,309 |
December 31, 2022 |  |  |  |  |  |  |  |  |  |  |  |
Short-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 135,878 |  |  | $ | — |  |  | $ | (1,094 | ) |  | $ | 134,784 |
U.S. agency bonds |  |  | 2,500 |  |  |  | — |  |  |  | (11 | ) |  |  | 2,489 |
Certificates of deposit |  |  | 2,191 |  |  |  | — |  |  |  | (32 | ) |  |  | 2,159 |
Short-term investments |  | $ | 140,569 |  |  | $ | — |  |  | $ | (1,137 | ) |  | $ | 139,432 |
Long-term |  |  |  |  |  |  |  |  |  |  |  |
U.S. treasury securities |  | $ | 19,360 |  |  | $ | — |  |  | $ | (126 | ) |  | $ | 19,234 |
U.S. agency bonds |  |  | 2,500 |  |  |  | — |  |  |  | (24 | ) |  |  | 2,476 |
Certificates of deposit |  |  | 245 |  |  |  | — |  |  |  | (4 | ) |  |  | 241 |
Long-term investments |  | $ | 22,105 |  |  | $ | — |  |  | $ | (154 | ) |  | $ | 21,951 |
The Company has determined that there were no material declines in fair value of its investments due to credit-related factors as of March 31, 2023 and December 31, 2022. Credit loss is limited due to the nature of the investments.

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

X
- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
Name: | us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration