Cash Equivalents and Investments (Tables)

3 Months Ended

Mar. 31, 2022

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

Schedule of Cash and Cash Equivalents

	Amortized Cost		Gross Unrealized				Fair Value		Net Carrying Value
			Gains		Losses
As of March 31, 2022	(In Thousands)
Cash equivalents
Commercial paper	$	8,999	$	—	$	(1)	$	8,998	$	8,999
Total cash equivalents	$	8,999	$	—	$	(1)	$	8,998	$	8,999
Investments
Commercial paper	$	79,843	$	—	$	(351)	$	79,492	$	79,843
Total investments	$	79,843	$	—	$	(351)	$	79,492	$	79,843

Debt Securities, Held-to-maturity

	Amortized Cost		Gross Unrealized				Fair Value		Net Carrying Value
			Gains		Losses
As of March 31, 2022	(In Thousands)
Cash equivalents
Commercial paper	$	8,999	$	—	$	(1)	$	8,998	$	8,999
Total cash equivalents	$	8,999	$	—	$	(1)	$	8,998	$	8,999
Investments
Commercial paper	$	79,843	$	—	$	(351)	$	79,492	$	79,843
Total investments	$	79,843	$	—	$	(351)	$	79,492	$	79,843

As of March 31, 2022	Amortized Cost		Fair Value
	(In Thousands)
Within one year	$	79,843	$	79,492
After one year through five years	—		—
After 5 years through 10 years	—		—
After 10 years	—		—
Total investments	$	79,843	$	79,492

Schedule of Unrealized Loss on Investments

For those securities in an unrealized loss position, the length of time the securities were in such a position is as follows:

	Less than 12 Months					Total
	# of Securities	Fair Value		Unrealized Losses		# of Securities	Fair Value		Unrealized Losses
As of March 31, 2022	(Dollars In Thousands)
Investments
Commercial Paper	10	$	79,492	$	(351)	10	$	79,492	$	(351)
Total	10	$	79,492	$	(351)	10	$	79,492	$	(351)

Investment Income

The following table presents the components of net investment income:

	For the Three Months Ended March 31,
	2022		2021
Investment income	$	75	$	—
Investment expenses	—		—
Net investment income	$	75	$	—