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Investments in Securities - Schedule of Marketable Securities at Cost and Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	$ 69,693	$ 71,299	$ 69,924
Gross Unrealized Gains	162	335	362
Gross Unrealized Losses	(424)	(404)	(838)
Fair Value	69,431	71,230	69,448
U.S. treasury bills
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	59,783	60,801	59,764
Gross Unrealized Gains	37	131	319
Gross Unrealized Losses	(35)	0	0
Fair Value	59,785	60,932	60,083
Municipal bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	8,955	9,543	9,205
Gross Unrealized Gains	70	148	40
Gross Unrealized Losses	(389)	(404)	(838)
Fair Value	8,636	9,287	8,407
Corporate/government bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	477	477	477
Gross Unrealized Gains	28	29	0
Gross Unrealized Losses	0	0	0
Fair Value	505	506	477
Other bonds
Debt Securities, Available-for-Sale [Line Items]
Amortized Cost	478	478	478
Gross Unrealized Gains	27	27	3
Gross Unrealized Losses	0	0	0
Fair Value	$ 505	$ 505	$ 481

X

- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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