Quarterly Statements of Operations - Schedule of Quarterly Statements of Operations (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Jun. 30, 2026 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Sep. 30, 2025 |
Jun. 30, 2025 |
Mar. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Expenses: | |||||||||||
| Sponsor's Fee, related party | $ 632 | $ 753 | $ 1,155 | $ 1,393 | $ 1,099 | $ 1,371 | $ 1,105 | $ 770 | $ 3,933 | $ 4,345 | $ 2,989 |
| Net investment loss | (632) | (753) | (1,155) | (1,393) | (1,099) | (1,371) | (1,105) | (770) | (3,933) | (4,345) | (2,989) |
| Net realized and unrealized (loss) gain from: | |||||||||||
| Net realized gain (loss) on investment in LTC | (482) | (355) | 14 | 245 | (44) | 236 | (9) | (287) | (578) | (104) | (622) |
| Net change in unrealized appreciation/depreciation on investment in LTC | (23,593) | (44,589) | (60,553) | 39,686 | 7,743 | (40,124) | 69,217 | (12,977) | (89,049) | 23,859 | (48,686) |
| Net realized and unrealized (loss) gain on investment | (24,075) | (44,944) | (60,539) | 39,931 | 7,699 | (39,888) | 69,208 | (13,264) | (89,627) | 23,755 | $ (49,308) |
| Net (decrease) increase in net assets resulting from operations | $ (24,707) | $ (45,697) | $ (61,694) | $ 38,538 | $ 6,600 | $ (41,259) | $ 68,103 | $ (14,034) | $ (93,560) | $ 19,410 | |