Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
---|---|---|---|---|---|---|
4 | Open Document | Open Filing | Jul 26, 2021 | Jul 23, 2021 | 000-55639 | |
4 | Open Document | Open Filing | Apr 15, 2020 | Apr 14, 2020 | 000-55639 | |
4 | Open Document | Open Filing | Mar 27, 2019 | Jan 11, 2019 | 000-55639 | |
3 | Open Document | Open Filing | OWNERSHIP DOCUMENT | Mar 21, 2018 | Feb 13, 2018 | 000-55639 |