Cash, Cash Equivalents and Marketable Securities - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Sale of non-marketable equity investment	$ 24,000	$ 23,979	$ 0	$ 0
Gain on sale of investment	$ 23,800	23,836	132	$ 316
Marketable securities
Debt Securities, Available-for-sale [Line Items]
Fair value of term bond mutual funds		3,700	3,600
Other assets
Debt Securities, Available-for-sale [Line Items]
Non-marketable equity securities		$ 400	$ 500

Gain (Loss) On Debt Securities And Sale Of Equity Securities Without Readily Determinable Fair Value

No definition available.

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- Definition

Proceeds From Sale Of Equity Securities Without Readily Determinable Fair Value

+ References

No definition available.

+ Details

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

+ Details

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- Definition

Amount of investment in equity security without readily determinable fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 321
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123583765&loc=SL75117539-209714

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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

No definition available.

+ Details

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