Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Investment maturity period (in years)	1 year
Fair value of outstanding debt	$ 13,400
Carrying value of outstanding debt	17,185
Term Loan Due 2040
Debt Instrument [Line Items]
Carrying value of outstanding debt	$ 10,560	$ 10,880
Interest rate (as a percent)	7.84%
Term Loan Due 2037
Debt Instrument [Line Items]
Carrying value of outstanding debt	$ 6,625	$ 6,875
Interest rate (as a percent)	7.78%