Marketable Securities and Fair Value Measurements - Schedule of available for sale securities (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2026	Dec. 31, 2025
Equity securities:
Equity Securities, Adjusted Cost	$ 5,517	$ 5,428
Equity Securities, Gross Unrealized Gains	4	15
Equity Securities, Gross Unrealized Losses	0	0
Equity Securities, Fair Value	5,521	5,443
Debt securities:
Debt Securities, Adjusted Cost	6,263	6,174
Debt securities, Gross Unrealized Gains	4	15
Debt Securities, Gross Unrealized Losses	(92)	(107)
Debt Securities, Fair Value	6,175	6,082
Preferred Equity Securities [Member]
Equity securities:
Equity Securities, Adjusted Cost	510	510
Equity Securities, Gross Unrealized Gains	4	15
Equity Securities, Gross Unrealized Losses	0	0
Equity Securities, Fair Value	514	525
Mutual Funds [Member]
Equity securities:
Equity Securities, Adjusted Cost	5,007	4,918
Equity Securities, Gross Unrealized Gains	0	0
Equity Securities, Gross Unrealized Losses	0	0
Equity Securities, Fair Value	5,007	4,918
Corporate Bonds [Member]
Debt securities:
Debt Securities, Adjusted Cost	746	746
Debt securities, Gross Unrealized Gains	0	0
Debt Securities, Gross Unrealized Losses	(92)	(107)
Debt Securities, Fair Value	$ 654	$ 639

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