Marketable Securities - Schedule of Debt Securities in an Unrealized Loss Position (Details) $ in Thousands	Mar. 31, 2020 USD ($)
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt securities, available for sale, in an unrealized loss posiiton for less than 12 months, fair value	$ 72,343
Debt securities, available for sale, held in an unrealized loss position for less than 12 months, unrealized losses	(692)
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, fair value	0
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, unrealized losses	0
Debt securities, available for sale, unrealized loss position, fair value	72,343
Debt securities, available for sale, unrealized loss position, unrealized losses	(692)
Domestic corporate debt securities
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt securities, available for sale, in an unrealized loss posiiton for less than 12 months, fair value	67,477
Debt securities, available for sale, held in an unrealized loss position for less than 12 months, unrealized losses	(638)
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, fair value	0
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, unrealized losses	0
Debt securities, available for sale, unrealized loss position, fair value	67,477
Debt securities, available for sale, unrealized loss position, unrealized losses	(638)
Domestic corporate commercial paper
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items]
Debt securities, available for sale, in an unrealized loss posiiton for less than 12 months, fair value	4,866
Debt securities, available for sale, held in an unrealized loss position for less than 12 months, unrealized losses	(54)
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, fair value	0
Debt securities, available for sale, held in an unrealized loss position for more than 12 months, unrealized losses	0
Debt securities, available for sale, unrealized loss position, fair value	4,866
Debt securities, available for sale, unrealized loss position, unrealized losses	$ (54)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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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.

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