Cash, Cash Equivalents and Marketable Securities - Schedule of Cash Equivalents and Marketable Securities, Available-for-Sale (Details) - USD ($) $ in Thousands |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Cash Equivalents and Marketable Securities | ||
| Marketable Securities, Amortized Cost | $ 173,984 | $ 91,392 |
| Marketable Securities, Unrealized Gains | 24 | |
| Marketable Securities, Fair Value | 173,984 | 91,416 |
| U.S treasury obligations | ||
| Cash Equivalents and Marketable Securities | ||
| Marketable Securities, Amortized Cost | 49,951 | |
| Marketable Securities, Unrealized Gains | 24 | |
| Marketable Securities, Fair Value | 49,975 | |
| Cash and money market funds | ||
| Cash Equivalents and Marketable Securities | ||
| Cash Equivalents, Amortized Cost | 173,984 | 29,441 |
| Cash Equivalents, Fair value | $ 173,984 | 29,441 |
| Overnight repurchase agreements | ||
| Cash Equivalents and Marketable Securities | ||
| Cash Equivalents, Amortized Cost | 12,000 | |
| Cash Equivalents, Fair value | $ 12,000 |
| X | ||||||||||
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. No definition available.
|
| X | ||||||||||
- Definition Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. No definition available.
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Definition Amount of 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 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
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|