Cash, Cash Equivalents, Marketable Securities, and Restricted Cash - Additional Information (Details) - USD ($) |
9 Months Ended | 12 Months Ended | |
|---|---|---|---|
Sep. 30, 2022 |
Dec. 31, 2021 |
Sep. 30, 2021 |
|
| Cash, Money Market Funds, and Marketable Securities | |||
| Cash and cash equivalents | $ 277,592,000 | $ 245,197,000 | $ 385,903,000 |
| Available-for-sale debt securities | 77,108,000 | 237,299,000 | |
| Realized gain (loss) on debt securities | 0 | 0 | |
| Fair value of available-for-sale debt securities in unrealized loss positions | 76,700,000 | $ 173,400,000 | |
| Marketable Securities | |||
| Cash, Money Market Funds, and Marketable Securities | |||
| Available-for-sale debt securities | $ 77,100,000 |
| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount 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. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading). No definition available.
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Details
|