| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 6-K | Open Document | Open Filing | 6-K | Aug 8, 2025 | Aug 8, 2025 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 9, 2025 | May 9, 2025 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 25, 2025 | Dec 31, 2024 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 11, 2025 | Apr 11, 2025 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2025 | Mar 31, 2025 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 7, 2025 | Mar 7, 2025 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 14, 2025 | Feb 14, 2025 | 000-51138 |
| UPLOAD | Open Document | Open Filing | Nov 26, 2024 | 000-51138 | ||
| CORRESP | Open Document | Open Filing | Nov 15, 2024 | |||
| 20-F/A | Open Document | Data | Open Filing | 20-F/A | Nov 15, 2024 | Dec 31, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 12, 2024 | Nov 12, 2024 | 000-51138 |
| UPLOAD | Open Document | Open Filing | Nov 7, 2024 | 000-51138 | ||
| 6-K | Open Document | Open Filing | 6-K | Aug 9, 2024 | Aug 9, 2024 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 9, 2024 | May 9, 2024 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 26, 2024 | Dec 31, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 12, 2024 | Apr 12, 2024 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 29, 2024 | Mar 29, 2024 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 7, 2024 | Mar 7, 2024 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 14, 2024 | Dec 31, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 13, 2023 | Sep 30, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 9, 2023 | Jun 30, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 11, 2023 | Mar 31, 2023 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 27, 2023 | Dec 31, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 13, 2023 | Apr 13, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2023 | Mar 31, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 8, 2023 | Mar 8, 2023 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 14, 2023 | Dec 31, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 14, 2022 | Sep 30, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 10, 2022 | Jun 30, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 13, 2022 | May 13, 2022 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 28, 2022 | Dec 31, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 13, 2022 | Apr 13, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2022 | Mar 31, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 8, 2022 | Mar 8, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 14, 2022 | Feb 14, 2022 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 12, 2021 | Nov 12, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 13, 2021 | Aug 13, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 14, 2021 | May 14, 2021 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 29, 2021 | Dec 31, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 13, 2021 | Apr 13, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2021 | Mar 31, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 9, 2021 | Mar 9, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 16, 2021 | Feb 16, 2021 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 13, 2020 | Nov 13, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 7, 2020 | Aug 7, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Jun 18, 2020 | Jun 18, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 29, 2020 | May 29, 2020 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 29, 2020 | Dec 31, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 10, 2020 | Apr 10, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2020 | Mar 31, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 6, 2020 | Mar 6, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 13, 2020 | Feb 13, 2020 | 000-51138 |
| 6-K | Open Document | Open Filing | 20193Q_6K | Nov 14, 2019 | Nov 14, 2019 | 000-51138 |
| 6-K/A | Open Document | Open Filing | 6-K/A | Aug 8, 2019 | Aug 8, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 8, 2019 | Aug 8, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Jun 4, 2019 | Jun 4, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K_2019_1Q | May 13, 2019 | May 13, 2019 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 26, 2019 | Dec 31, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 12, 2019 | Apr 12, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 29, 2019 | Mar 29, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K_20180308 | Mar 8, 2019 | Mar 8, 2019 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 15, 2019 | Feb 15, 2019 | 000-51138 |
| EFFECT | Open Document | Open Filing | Nov 5, 2018 | 333-227893 | ||
| 6-K | Open Document | Open Filing | 6-K | Oct 31, 2018 | Oct 31, 2018 | 000-51138 |
| F-6 | Open Document | Open Filing | Oct 19, 2018 | 333-227893 | ||
| 6-K | Open Document | Open Filing | 6-K | Aug 27, 2018 | Aug 27, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 27, 2018 | Aug 27, 2018 | 000-51138 |
| 424B3 | Open Document | Open Filing | FORM OF RECEIPT | Aug 24, 2018 | 333-122160 | |
| 6-K | Open Document | Open Filing | 6-K | Jul 27, 2018 | Jul 27, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 27, 2018 | Apr 27, 2018 | 000-51138 |
| 20-F/A | Open Document | Data | Open Filing | FORM 20-F/A | Apr 27, 2018 | Dec 31, 2017 | 000-51138 |
| 20-F | Open Document | Open Filing | FORM 20-F | Apr 27, 2018 | Dec 31, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 5, 2018 | Apr 5, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 30, 2018 | Mar 30, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 9, 2018 | Mar 9, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 7, 2018 | Mar 7, 2018 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Feb 2, 2018 | Dec 31, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Oct 30, 2017 | Oct 30, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Aug 9, 2017 | Aug 9, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Apr 28, 2017 | Apr 28, 2017 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | FORM 20-F | Apr 28, 2017 | Dec 31, 2016 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Apr 7, 2017 | Apr 7, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Mar 30, 2017 | Mar 30, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Mar 9, 2017 | Mar 9, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Mar 9, 2017 | Mar 9, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Jan 25, 2017 | Jan 25, 2017 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Oct 28, 2016 | Oct 28, 2016 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Aug 24, 2016 | Aug 24, 2016 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | May 25, 2016 | May 25, 2016 | 000-51138 |
| 20-F/A | Open Document | Open Filing | AMENDMENT NO.1 TO FORM 20-F | Apr 29, 2016 | Dec 31, 2015 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 20, 2016 | Dec 31, 2015 | 000-51138 |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | Apr 5, 2016 | Apr 5, 2016 | 000-51138 |
| 6-K | Open Document | Data | Open Filing | FORM 6-K | Mar 25, 2016 | Mar 25, 2016 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | Mar 4, 2016 | Mar 4, 2016 | 000-51138 |
| UPLOAD | Open Document | Open Filing | Feb 11, 2016 | |||
| CORRESP | Open Document | Open Filing | Feb 1, 2016 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | Jan 26, 2016 | Jan 26, 2016 | 000-51138 |
| UPLOAD | Open Document | Open Filing | Dec 31, 2015 | |||
| 6-K | Open Document | Open Filing | FORM 6-K | Nov 24, 2015 | Nov 24, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 18, 2015 | Aug 31, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 27, 2015 | May 31, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | FORM 6-K | May 27, 2015 | May 27, 2015 | 000-51138 |
| 424B3 | Open Document | Open Filing | LETTER RE RATIO CHANGE | May 11, 2015 | 333-122160 | |
| 6-K | Open Document | Open Filing | 6-K | May 11, 2015 | May 31, 2015 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 27, 2015 | Dec 31, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 22, 2015 | Apr 30, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 2, 2015 | Apr 30, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 27, 2015 | Mar 31, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 4, 2015 | Mar 31, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Jan 20, 2015 | Jan 31, 2015 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 25, 2014 | Nov 30, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Nov 18, 2014 | Nov 30, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Aug 27, 2014 | Aug 31, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Jun 3, 2014 | Jun 30, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | May 22, 2014 | May 30, 2014 | 000-51138 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 30, 2014 | Dec 31, 2013 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Apr 4, 2014 | Apr 30, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 26, 2014 | Mar 31, 2014 | 000-51138 |
| 6-K | Open Document | Open Filing | 6-K | Mar 4, 2014 | Mar 31, 2014 | 000-51138 |