Organization and Summary of Significant Accounting Policies - Schedule of Contingent Portion Payments (Detail) - USD ($) |
3 Months Ended | 108 Months Ended | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Dec. 31, 2024 |
Sep. 30, 2024 |
Jun. 30, 2024 |
Mar. 31, 2024 |
Dec. 31, 2023 |
Sep. 30, 2023 |
Jun. 30, 2023 |
Mar. 31, 2023 |
Dec. 31, 2022 |
Sep. 30, 2022 |
Jun. 30, 2022 |
Mar. 31, 2022 |
Dec. 31, 2021 |
Sep. 30, 2021 |
Jun. 30, 2021 |
Mar. 31, 2021 |
Sep. 30, 2020 |
Jun. 30, 2020 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Sep. 30, 2018 |
Mar. 31, 2018 |
Sep. 30, 2017 |
Mar. 31, 2017 |
Sep. 30, 2016 |
Mar. 31, 2016 |
Mar. 31, 2025 |
|
| Accounting Policies [Abstract] | |||||||||||||||||||||||||||||||
| Deficiency in Contingent Portion payments | $ 69,244 | $ 0 | $ 135,768 | $ 0 | $ 43,909 | $ 40,761 | $ 131,213 | $ 37,491 | $ 44,908 | $ 0 | $ 83,438 | $ 70,709 | $ 0 | $ 38,112 | $ 38,846 | $ 43,148 | $ 42,742 | $ 40,085 | $ 15,557 | $ 40,025 | $ 42,572 | $ 68,571 | $ 41,786 | $ 71,489 | $ 75,712 | $ 98,901 | $ 41,557 | $ 85,359 | $ 37,529 | $ 79,889 | $ 1,559,321 |