Investments

6 Months Ended

Jun. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Investments

Investments

Investments by security type consisted of the following at June 30, 2022 and December 31, 2021 (in thousands):

	June 30, 2022
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Investments:
Corporate bonds	$	12,043	$	—	$	(51	)	$	11,992
Government securities		57,184		—		(205	)		56,979
	$	69,227	$	—	$	(256	)	$	68,971

	December 31, 2021
	Amortized Cost		Gross Unrealized Gain		Gross Unrealized Loss			Fair Value
Investments:
Commercial paper	$	6,250	$	—	$	—		$	6,250
Corporate bonds		40,123		—		(28	)		40,095
Government securities		64,885		—		(31	)		64,854
	$	111,258	$	—	$	(59	)	$	111,199

Investments with original maturities of less than 90 days are included in cash and cash equivalents on the condensed consolidated balance sheets and are not included in the table above. Investments with maturities of less than 12 months are considered current and those investments with maturities greater than 12 months are considered non-current assets.

Excluded from the tables above are restricted investments of $1,401 and $1,401 as the cost approximates current fair value as of June 30, 2022 and December 31, 2021, respectively.

The amortized cost and fair value of investments in commercial paper, corporate bonds and government securities by contractual maturity, as of June 30, 2022 and December 31, 2021 were as follows (in thousands):

	Available-for-Sale as of June 30, 2022				Available-for-Sale as of December 31, 2021
	Cost		Fair Value		Cost		Fair Value
Due in 1-year or less	$	69,227	$	68,971	$	110,762	$	110,704
Due after 1-year through 5-years		—		—		496		495
	$	69,227	$	68,971	$	111,258	$	111,199