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Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Marketable Securities

The following tables summarize the Company's marketable debt securities (in thousands):

			March 31, 2021
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. Treasury securities			$	79,775					$	12					$	—					$	79,787
Government-sponsored enterprises			$	4,570					$	—					$	—					$	4,570
Corporate debt securities			40,325						2						(3)						40,324
Total			$	124,670					$	14					$	(3)					$	124,681

			December 31, 2020
			Amortized Cost						Gross Unrealized Gains						Gross Unrealized Losses						Fair Value
U.S. Treasury securities			$	60,630					$	1					$	(7)					$	60,624
Corporate debt securities			30,777						2						(3)						30,776
Total			$	91,407					$	3					$	(10)					$	91,400

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- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

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