Cash, Cash Equivalents and Available for Sale Securities (Tables)

3 Months Ended

Mar. 31, 2021

Cash, Cash Equivalents, and Short-term Investments [Abstract]

Schedule of Available for Sale Securities

Available for sale securities, including carrying value and estimated fair values, are summarized as follows:

	As of March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
U.S. Treasury securities	$	45,111	$	12	$	—	$	45,123
Corporate debt securities	91,559		2		(12)		91,549
Asset-backed securities	14,194		1		(1)		14,194
Total	$	150,864	$	15	$	(13)	$	150,866

Schedule of Accumulated Other Comprehensive Income

The changes in accumulated other comprehensive income associated with the unrealized gain on available for sale securities during the three months ended March 31, 2021 and 2020, respectively, were as follows:

	Three months ended March 31,
	2021		2020
Beginning balance	$	3	$	—
Current period changes in fair value before reclassifications, net of tax	(1)		—
Amounts reclassified from accumulated other comprehensive income, net of tax	—		—
Total other comprehensive income	$	(1)	$	—
Ending balance	$	2	$	—