Fair Value of Financial Instruments - Financial Instruments Valued on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Financial assets:
U.S. Treasury securities	$ 30,146	$ 29,930
Investment in BFG	8,400	7,700
Level 1 \| Fair Value, Recurring
Financial assets:
U.S. Treasury securities	30,146	29,930
Level 3 \| Fair Value, Recurring
Financial assets:
Investment in BFG	8,400	7,700
Level 2 \| Fair Value, Recurring
Financial assets:
Derivative asset	0	509
Financial liabilities:
Derivative liability	$ 4	$ 0

Amount of 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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