Investments in Debt Securities (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Summary of Available-for-Sale Debt Securities

The cost basis and fair value of available-for-sale debt securities with unrealized gains and losses included in “Accumulated other comprehensive loss” in the consolidated balance sheets were as follows (in thousands):

	December 31, 2023			December 31, 2022
Available-for-sale securities	Cost Basis	Unrealized Gains/(Losses), net	Fair Value	Cost Basis	Unrealized Gains/(Losses), net	Fair Value
Government debt
U.S. treasury bonds	17,230	168	17,398	141,003	59	141,062
Total available-for-sale securities	17,230	168	17,398	141,003	59	141,062

Summary of Available-for-Sale Debt Securities in an Unrealized Loss Position

	December 31, 2023				December 31, 2022
Available-for-sale securities in an unrealized loss position	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Government debt
U.S. treasury bonds
Less than 12 months(1)	$	—	$	—	$	39,574	$	(381)
12 months or more(1)	—		—		—		—
Total available-for-sale securities	$	—	$	—	$	39,574	$	(381)
(1) Indicates the length of time that individual securities have been in a continuous unrealized loss position.

Summary of Available-for-Sale Debt Securities by Contractual Maturity

The cost basis and fair value of available-for-sale debt securities at December 31, 2023, by contractual maturity, are shown below (in thousands). Expected maturities may differ from contractual maturities because borrowers may have the right to prepay and creditors may have the right to call obligations.

	December 31, 2023				December 31, 2022
	Cost Basis		Fair Value		Cost Basis		Fair Value
Due in one year or less	$	17,230	$	17,398	$	141,003	$	141,062
Due after one year through five years	—		—		—		—
Total available-for-sale securities	$	17,230	$	17,398	$	141,003	$	141,062