| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 10, 2025 | Sep 30, 2025 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 20, 2025 | Oct 20, 2025 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 12, 2025 | Jun 30, 2025 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 17, 2025 | Jul 17, 2025 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 8, 2025 | Mar 31, 2025 | 001-35160 |
| 8-K | Open Document | Open Filing | FROM 8-K | Apr 17, 2025 | Apr 17, 2025 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 20, 2025 | Dec 31, 2024 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jan 17, 2025 | Jan 17, 2025 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 7, 2024 | Sep 30, 2024 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 17, 2024 | Oct 17, 2024 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 9, 2024 | Jun 30, 2024 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 18, 2024 | Jul 18, 2024 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 8, 2024 | Mar 31, 2024 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Apr 18, 2024 | Apr 18, 2024 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 20, 2024 | Dec 31, 2023 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jan 19, 2024 | Jan 19, 2024 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 9, 2023 | Sep 30, 2023 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 19, 2023 | Oct 19, 2023 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 10, 2023 | Jun 30, 2023 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 20, 2023 | Jul 20, 2023 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 11, 2023 | Mar 31, 2023 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Apr 20, 2023 | Apr 20, 2023 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 16, 2023 | Dec 31, 2022 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jan 20, 2023 | Jan 20, 2023 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 10, 2022 | Sep 30, 2022 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 20, 2022 | Oct 20, 2022 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 9, 2022 | Jun 30, 2022 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 20, 2022 | Jul 20, 2022 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 10, 2022 | Mar 31, 2022 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Apr 20, 2022 | Apr 20, 2022 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 17, 2022 | Dec 31, 2021 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jan 20, 2022 | Jan 20, 2022 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 12, 2021 | Sep 30, 2021 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 20, 2021 | Oct 20, 2021 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 12, 2021 | Jun 30, 2021 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 20, 2021 | Jul 20, 2021 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 14, 2021 | Mar 31, 2021 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Apr 20, 2021 | Apr 20, 2021 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 16, 2021 | Dec 31, 2020 | 001-35160 |
| 8-K | Open Document | Open Filing | FROM 8-K | Jan 20, 2021 | Jan 20, 2021 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Nov 9, 2020 | Sep 30, 2020 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Oct 20, 2020 | Oct 20, 2020 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | Aug 10, 2020 | Jun 30, 2020 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jul 20, 2020 | Jul 20, 2020 | 001-35160 |
| 10-Q | Open Document | Open Filing | FORM 10-Q | May 11, 2020 | Mar 31, 2020 | 001-35160 |
| 8-K | Open Document | Open Filing | FORM 8-K | Apr 17, 2020 | Apr 17, 2020 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 13, 2020 | Dec 31, 2019 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jan 16, 2020 | Jan 16, 2020 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Nov 13, 2019 | Sep 30, 2019 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Oct 17, 2019 | Oct 17, 2019 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Aug 9, 2019 | Jun 30, 2019 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jul 18, 2019 | Jul 18, 2019 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 9, 2019 | Mar 31, 2019 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Apr 18, 2019 | Apr 18, 2019 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 12, 2019 | Dec 31, 2018 | 001-35160 |
| SC 13G | Open Document | Open Filing | SC 13G | Feb 8, 2019 | 005-86233 | |
| 8-K | Open Document | Open Filing | 8-K | Jan 17, 2019 | Jan 17, 2019 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Nov 8, 2018 | Sep 30, 2018 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Oct 18, 2018 | Oct 18, 2018 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Aug 10, 2018 | Jun 30, 2018 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jul 19, 2018 | Jul 19, 2018 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 10, 2018 | Mar 31, 2018 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Apr 19, 2018 | Apr 19, 2018 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Mar 15, 2018 | Mar 14, 2018 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 14, 2018 | Dec 31, 2017 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jan 18, 2018 | Jan 18, 2018 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Nov 9, 2017 | Sep 30, 2017 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Oct 19, 2017 | Oct 19, 2017 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Aug 10, 2017 | Jun 30, 2017 | 001-35160 |
| 8-K | Open Document | Data | Open Filing | 8-K | Jul 20, 2017 | Jul 20, 2017 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 11, 2017 | Mar 31, 2017 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Apr 20, 2017 | Apr 20, 2017 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 15, 2017 | Dec 31, 2016 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jan 19, 2017 | Jan 19, 2017 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Nov 9, 2016 | Sep 30, 2016 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Oct 20, 2016 | Oct 20, 2016 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Aug 9, 2016 | Jun 30, 2016 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jul 20, 2016 | Jul 20, 2016 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 10, 2016 | Mar 31, 2016 | 001-35160 |
| 8-K | Open Document | Data | Open Filing | 8-K | Apr 19, 2016 | Apr 19, 2016 | 001-35160 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 15, 2016 | Dec 31, 2015 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jan 19, 2016 | Jan 19, 2016 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Nov 5, 2015 | Sep 30, 2015 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Oct 19, 2015 | Oct 19, 2015 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | Aug 6, 2015 | Jun 30, 2015 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jul 16, 2015 | Jul 16, 2015 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 7, 2015 | Mar 31, 2015 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Apr 16, 2015 | Apr 16, 2015 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 12, 2015 | Dec 31, 2014 | 001-35160 |
| 8-K | Open Document | Open Filing | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | Jan 15, 2015 | Jan 15, 2015 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Dec 22, 2014 | Dec 22, 2014 | 001-35160 |
| UPLOAD | Open Document | Open Filing | Nov 19, 2014 | |||
| 10-Q | Open Document | Open Filing | 10-Q | Nov 6, 2014 | Sep 30, 2014 | 001-35160 |
| CORRESP | Open Document | Open Filing | Oct 31, 2014 | |||
| UPLOAD | Open Document | Open Filing | Oct 22, 2014 | |||
| 8-K | Open Document | Open Filing | 8-K | Oct 16, 2014 | Oct 16, 2014 | 001-35160 |
| CORRESP | Open Document | Open Filing | Oct 7, 2014 | |||
| UPLOAD | Open Document | Open Filing | Sep 24, 2014 | |||
| SC 13G/A | Open Document | Open Filing | KAYNE ANDERSON CAPITAL ADVISORS, LP SC 13GA 8-8-2014 (VOC ENERGY TRUST) | Aug 11, 2014 | 005-86233 | |
| 10-Q | Open Document | Open Filing | QUARTERLY REPORT PURSUANT TO SECTIONS 13 OR 15(D) | Aug 7, 2014 | Jun 30, 2014 | 001-35160 |
| 8-K | Open Document | Open Filing | 8-K | Jul 17, 2014 | Jul 17, 2014 | 001-35160 |
| 10-Q | Open Document | Open Filing | 10-Q | May 8, 2014 | Mar 31, 2014 | 001-35160 |
| 8-K | Open Document | Open Filing | CURRENT REPORT OF MATERIAL EVENTS OR CORPORATE CHANGES | Apr 17, 2014 | Apr 17, 2014 | 001-35160 |
| 10-K | Open Document | Open Filing | 10-K | Mar 13, 2014 | Dec 31, 2013 | 001-35160 |
| SC 13G/A | Open Document | Open Filing | KAYNE ANDERSON CAPITAL ADVISORS LP SC 13G A NO 3 2-4-2014 (VOC ENERGY TRUST) | Feb 5, 2014 | 005-86233 | |
| 8-K | Open Document | Open Filing | 8-K | Jan 16, 2014 | Jan 16, 2014 | 001-35160 |