Investments (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Investment

The following table summarizes the contract maturity of the available-for-sale securities the Company held as of December 31, 2021:

One year or less	100	%
After one year but within two years	—	%
Total	100	%

Debt Securities, Available-for-sale

The amortized cost, gross unrealized holding gains, gross unrealized holding losses and fair value of cash equivalents and available-for-sale securities by type of security at December 31, 2021 and 2020 were as follows:

	December 31, 2021
	Amortized Costs		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses		Fair Value
Commercial paper	$	10,498	$	—	$	(2)	$	10,496
	$	10,498	$	—	$	(2)	$	10,496

	December 31, 2020
	Amortized Costs		Gross Unrealized Holding Gains		Gross Unrealized Holding Losses		Fair Value
Commercial paper	$	15,992	$	2	$	(3)	$	15,991
Corporate notes/bonds	29,227		72		(3)		29,296
U.S. Treasuries	2,251		2		—		2,253
U.S. Government agency securities	1,265		13		—		1,278
	$	48,735	$	89	$	(6)	$	48,818