Statements of Assets and Liabilities (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Investment in ETC, at fair value (cost $82,445 and $82,955 as of March 31, 2026 and December 31, 2025, respectively)	$ 82,445	$ 82,955
Number of authorized shares not disclosed	true	true
Common stock, shares authorized, unlimited	Unlimited	Unlimited

Cost of the investment.

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