| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 13, 2022 | Jan 12, 2022 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jan 10, 2022 | Jan 7, 2022 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 10, 2021 | Dec 8, 2021 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 9, 2021 | Dec 7, 2021 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Sep 29, 2021 | Sep 28, 2021 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 14, 2020 | Dec 10, 2020 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 7, 2020 | Dec 5, 2020 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 9, 2019 | Dec 5, 2019 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 10, 2018 | Dec 6, 2018 | 001-13836 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2018 | Sep 28, 2018 | 001-13836 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | Oct 2, 2018 | Oct 2, 2018 | 001-13836 |