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Marketable Investments - Summary of Company's marketable investments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 13,845	$ 19,899
Gross Unrealized Gains	0	8
Gross Unrealized Losses	(181)	(219)
Market value	13,664	19,688
Corporate obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	11,846	17,900
Gross Unrealized Gains	0	8
Gross Unrealized Losses	(162)	(205)
Market value	11,684	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	(19)	(14)
Market value	$ 1,980	$ 1,985

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