| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Jul 26, 2022 | Jul 25, 2022 | 001-14315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 17, 2021 | Jun 15, 2021 | 001-14315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Jun 17, 2020 | Jun 15, 2020 | 001-14315 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | Dec 17, 2018 | Dec 14, 2018 | 001-14315 |
| 3 | Open Document | Open Filing | FORM 3 SUBMISSION | Nov 26, 2018 | Nov 16, 2018 | 001-14315 |