Marketable Investments - Summary of Company's marketable investments (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 16,924	$ 19,899
Gross Unrealized Gains	3	8
Gross Unrealized Losses	(168)	(219)
Market value	16,759	19,688
Corporate obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,925	17,900
Gross Unrealized Gains	3	8
Gross Unrealized Losses	(158)	(205)
Market value	14,770	17,703
Federal agency obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,999	1,999
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(10)	(14)
Market value	$ 1,989	$ 1,985

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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