Investments (Tables)

9 Months Ended

Sep. 30, 2020

Investments Debt And Equity Securities [Abstract]

Schedule of Investments by Security Type

Investments by security type consisted of the following at September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Investments:
Commercial paper	$	6,245	$	—	$	—		$	6,245
Corporate bonds		2,021		—		—			2,021
Government securities		104,718		4		(2	)		104,720
	$	112,984	$	4	$	(2	)	$	112,986

	December 31, 2019
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Investments:
Commercial Paper	$	11,957	$	—	$	—		$	11,957
Corporate Bonds		17,732		3		(2	)		17,733
	$	29,689	$	3	$	(2	)	$	29,690

Schedule of Amortized Cost and Fair Value of Investments by Contractual Maturity

The amortized cost and fair value of investments in commercial paper, corporate bonds and government securities by contractual maturity, as of September 30, 2020 were as follows (in thousands):

	Available-for-Sale
	Cost		Fair Value
Due in 1-year or less	$	90,586	$	90,588
Due after 1-year through 5-years		22,398		22,398
	$	112,984	$	112,986