Investments in Available-for-Sale Securities - Schedule of investments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	$ 32,153	$ 37,014
Available-for-sale, Gross Unrealized Gains	13	21
Available-for-sale, Gross Unrealized Losses	(50)	(42)
Available-for-sale, Fair Value	32,116	36,993
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	25,408	28,325
Available-for-sale, Gross Unrealized Gains		1
Available-for-sale, Gross Unrealized Losses	(20)	(25)
Available-for-sale, Fair Value	25,388	28,301
Corporate notes and bonds
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, Cost Basis	6,745	8,689
Available-for-sale, Gross Unrealized Gains	13	20
Available-for-sale, Gross Unrealized Losses	(30)	(17)
Available-for-sale, Fair Value	$ 6,728	$ 8,692

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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Amount, before tax, of unrealized loss 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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Amortized cost of 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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