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Marketable Securities - Schedule of Available-For-Sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Available-for-sale securities:
Amortized Cost	$ 8,993	$ 13,257
Gross Unrealized Gain	0	2
Gross Unrealized (Losses)	(45)	(223)
Estimated Fair Value	8,948	13,036
Tax-exempt municipal securities
Available-for-sale securities:
Amortized Cost	6,993	10,055
Gross Unrealized Gain	0	2
Gross Unrealized (Losses)	(15)	(144)
Estimated Fair Value	6,978	9,913
Corporate debt securities
Available-for-sale securities:
Amortized Cost	2,000	3,202
Gross Unrealized Gain	0	0
Gross Unrealized (Losses)	(30)	(79)
Estimated Fair Value	1,970	3,123
Term deposits
Held-to-maturity securities:
Amortized Cost	17,180	27,175
Gross Unrealized Gain	0	0
Gross Unrealized (Losses)	0	0
Estimated Fair Value	$ 17,180	$ 27,175

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