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Marketable Investments - Summary of Company's marketable investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 9,891	$ 19,899
Gross Unrealized Gains	0	8
Gross Unrealized Losses	(141)	(219)
Market value	9,750	19,688
Corporate obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	7,892	17,900
Gross Unrealized Gains	0	8
Gross Unrealized Losses	(126)	(205)
Market value	7,766	17,703
Federal agency obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,999	1,999
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(15)	(14)
Market value	$ 1,984	$ 1,985

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