INVESTMENTS (Tables)

9 Months Ended

Sep. 30, 2022

INVESTMENTS

Schedule of marketable securities by security type

	As of September 30, 2022								As of December 31, 2021
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Estimated				Unrealized		Unrealized		Estimated
(in thousands)	Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
US government agency debt security	$	6,967	$	23	$	—	$	6,990	$	27,042	$	1	$	(108)	$	26,935
Total	$	6,967	$	23	$	—	$	6,990	$	27,042	$	1	$	(108)	$	26,935

Schedule of contractual maturities

	As of September 30, 2022								As of December 31, 2021
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Estimated				Unrealized		Unrealized		Estimated
(in thousands)	Cost		Gains		Losses		Fair Value		Cost		Gains		Losses		Fair Value
Due in one year or less	$	6,967	$	23	$	—	$	6,990	$	27,042	$	1	$	(108)	$	26,935
Due in one through two years		—		—		—		—		—		—		—		—
Total	$	6,967	$	23	$	—	$	6,990	$	27,042	$	1	$	(108)	$	26,935

Unrealized Gain (Loss) on Investments

As of September 30, 2022

Securities in an unrealized loss position less than 12 months

Securities in an unrealized loss position greater than 12 months

Total

Unrealized

Estimated

Unrealized

Estimated

Unrealized

Estimated

(in thousands)

Losses

Fair Value

Losses

Fair Value

Losses

Fair Value

US government agency debt security

$

—

$

—

$

—

$

—

$

—

$

—

Total

$

—

$

—

$

—

$

—

$

—

$

—

	As of December 31, 2021
	Securities in an unrealized loss position less than 12 months				Securities in an unrealized loss position greater than 12 months				Total
	Unrealized		Estimated		Unrealized		Estimated		Unrealized		Estimated
(in thousands)	Losses		Fair Value		Losses		Fair Value		Losses		Fair Value
US government agency debt security	$	(108)	$	17,696	$	—	$	—	$	(108)	$	17,696
Total	$	(108)	$	17,696	$	—	$	—	$	(108)	$	17,696