Investments in Available-for-Sale Securities - Schedule of investments (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	$ 35,566	$ 32,715
Available-for-sale, Gross Unrealized Gains	32	15
Available-for-sale, Gross Unrealized Losses	(15)	(6)
Available-for-sale, Fair Value	35,583	32,724
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	17,326	28,764
Available-for-sale, Gross Unrealized Gains	10	14
Available-for-sale, Gross Unrealized Losses	(8)	(5)
Available-for-sale, Fair Value	17,328	28,773
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	18,240	3,951
Available-for-sale, Gross Unrealized Gains	22	1
Available-for-sale, Gross Unrealized Losses	(7)	(1)
Available-for-sale, Fair Value	$ 18,255	$ 3,951