| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 20 Jan 2023 | 18 Jan 2023 | 001-14965 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 21 Jan 2022 | 19 Jan 2022 | 001-14965 |
| 4 | Open Document | Open Filing | FORM 4 SUBMISSION | 22 Jan 2021 | 20 Jan 2021 | 001-14965 |
| 4 | Open Document | Open Filing | 17 Jan 2020 | 16 Jan 2020 | 001-14965 | |
| 4 | Open Document | Open Filing | 18 Jan 2019 | 17 Jan 2019 | 001-14965 | |
| 3 | Open Document | Open Filing | 06 Jul 2018 | 02 Jul 2018 | 001-14965 | |
| 4 | Open Document | Open Filing | FORM 4 | 12 Sep 2017 | 16 Jun 2017 | 000-17586 |
| 4 | Open Document | Open Filing | FORM 4 | 16 Jun 2017 | 14 Jun 2017 | 000-17586 |
| 4 | Open Document | Open Filing | FORM 4 | 20 Jun 2016 | 16 Jun 2016 | 000-17586 |
| 4 | Open Document | Open Filing | FORM 4 | 05 Jun 2015 | 03 Jun 2015 | 000-17586 |
| 4 | Open Document | Open Filing | FORM 4 | 10 Mar 2014 | 06 Mar 2014 | 000-17586 |
| 4 | Open Document | Open Filing | FORM 4 | 11 Mar 2013 | 07 Mar 2013 | 000-17586 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Sep 2012 | 13 Sep 2012 | 000-17586 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2012 | 06 Jun 2012 | 000-17586 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jun 2012 | 04 Jun 2012 | 000-17586 |