CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS (Tables)

3 Months Ended

Mar. 31, 2022

CASH, CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS

Schedule of cash, cash equivalents and short-term investments

Cash, cash equivalents and short-term investments for the periods presented consist of the following (in thousands):

	March 31,		December 31,
	2022		2021
Cash	$	4,070	$	6,249
Money market funds		12,363		6,842
US treasury bills		35,170		35,366
Government-sponsored enterprise securities		15,559		14,678
Corporate bonds and commercial paper		40,357		61,832
	$	107,519	$	124,967
Reported as:
Cash and cash equivalents	$	24,679	$	18,890
Short-term investments		82,840		106,077
	$	107,519	$	124,967

Schedule of cash equivalents and short-term investments including securities with unrealized gains and losses

Cash equivalents and short-term investments include the following securities with gross unrealized gains and losses (in thousands):

			Gross		Gross
	Amortized		Unrealized		Unrealized
March 31, 2022	Cost		Gains		Losses		Fair Value
US treasury bills	$	35,353	$	—	$	(183)	$	35,170
Government-sponsored enterprise securities		15,677		—		(118)		15,559
Corporate bonds and commercial paper		40,472		—		(115)		40,357
Total	$	91,502	$	—	$	(416)	$	91,086

			Gross		Gross
	Amortized		Unrealized		Unrealized
December 31, 2021	Cost		Gains		Losses		Fair Value
US treasury bills	$	35,416	$	—	$	(50)	$	35,366
Government-sponsored enterprise securities		14,705		—		(27)		14,678
Corporate bonds and commercial paper		61,857		2		(27)		61,832
Total	$	111,978	$	2	$	(104)	$	111,876

Schedule of fair value and gross unrealized losses of investments in unrealized loss position

The following table shows the fair value and gross unrealized losses of our investments in individual securities that are in an unrealized loss position, aggregated by investment category (in thousands):

March 31, 2022	Fair Value		Unrealized Losses
US treasury bills	$	35,170	$	(183)
Government-sponsored enterprise securities		15,559		(118)
Corporate bonds and commercial paper		39,607		(115)
Total	$	90,336	$	(416)