Cash, Cash Equivalents and Marketable Securities - Additional Information (Details)	6 Months Ended
Jun. 30, 2021 USD ($) item Security	Jun. 30, 2020 USD ($) item
Investments Debt And Equity Securities [Abstract]
Realized gains (losses)	$ 0	$ 0
Number of investments adjusted for other-than-temporary declines in fair value \| item	0	0
Number of securities held unrealized position \| Security	8
Unrealized loss position for less than twelve months	$ 18,400,000
Unrealized loss position for more than twelve months	0
Marketable securities with an other-than temporary impairment	$ 0

Number of investments adjusted for other-than-temporary declines in fair value.

No definition available.

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer.

+ References

No definition available.

+ Details

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- Definition

Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months.

+ References

No definition available.

+ Details

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- Definition

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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No definition available.

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- Definition

Number of investment positions in available-for-sale investments in a continuous unrealized loss position for less than one year or normal operating cycle, if longer, for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

Amount of unrealized and realized gain (loss) on investment in marketable security, excluding other-than-temporary impairment (OTTI).

+ References

No definition available.

+ Details

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