| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 144 | Open Document | Open Filing | Dec 2, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Nov 21, 2025 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Nov 14, 2025 | Nov 14, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 12, 2025 | Nov 12, 2025 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | Nov 12, 2025 | Sep 30, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 12, 2025 | Nov 12, 2025 | 000-16050 |
| SCHEDULE 13G/A | Open Document | Open Filing | Nov 12, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Nov 4, 2025 | Nov 4, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Oct 20, 2025 | Oct 20, 2025 | 000-16050 |
| SCHEDULE 13G/A | Open Document | Open Filing | Oct 15, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Sep 29, 2025 | Sep 29, 2025 | 000-16050 |
| 144 | Open Document | Open Filing | Sep 18, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Sep 18, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Sep 12, 2025 | 000-16050 | ||
| SCHEDULE 13G/A | Open Document | Open Filing | Sep 8, 2025 | 005-39216 | ||
| 144 | Open Document | Open Filing | Sep 2, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Sep 2, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Sep 2, 2025 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Aug 18, 2025 | Aug 18, 2025 | 000-16050 |
| 144 | Open Document | Open Filing | Aug 15, 2025 | 000-16050 | ||
| SCHEDULE 13G | Open Document | Open Filing | Aug 14, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Aug 11, 2025 | Aug 11, 2025 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | Aug 11, 2025 | Jun 30, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 11, 2025 | Aug 11, 2025 | 000-16050 |
| SCHEDULE 13G/A | Open Document | Open Filing | Aug 5, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Jul 28, 2025 | Jul 28, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 21, 2025 | Jul 21, 2025 | 000-16050 |
| SCHEDULE 13G | Open Document | Open Filing | Jul 7, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Jun 26, 2025 | Jun 26, 2025 | 000-16050 |
| 144 | Open Document | Open Filing | Jun 20, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Jun 20, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Jun 17, 2025 | 000-16050 | ||
| 144 | Open Document | Open Filing | Jun 10, 2025 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Jun 5, 2025 | Jun 5, 2025 | 000-16050 |
| SD | Open Document | Open Filing | SD | Jun 4, 2025 | 000-16050 | |
| SCHEDULE 13D/A | Open Document | Open Filing | Jun 3, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Jun 3, 2025 | Jun 3, 2025 | 000-16050 |
| 424B5 | Open Document | Open Filing | 424B5 | May 30, 2025 | 333-286699 | |
| 6-K | Open Document | Open Filing | 6-K | May 30, 2025 | May 30, 2025 | 000-16050 |
| 424B5 | Open Document | Open Filing | 424B5 | May 28, 2025 | 333-286699 | |
| 6-K | Open Document | Open Filing | 6-K | May 28, 2025 | May 28, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 21, 2025 | May 21, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 19, 2025 | May 19, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 19, 2025 | May 19, 2025 | 000-16050 |
| SCHEDULE 13G/A | Open Document | Open Filing | May 12, 2025 | 005-39216 | ||
| EFFECT | Open Document | Open Filing | Apr 25, 2025 | 333-286699 | ||
| CORRESP | Open Document | Open Filing | Apr 23, 2025 | |||
| S-8 | Open Document | Open Filing | S-8 | Apr 23, 2025 | 333-286702 | |
| F-3 | Open Document | Open Filing | F-3 | Apr 23, 2025 | 333-286699 | |
| SCHEDULE 13G/A | Open Document | Open Filing | Apr 1, 2025 | 005-39216 | ||
| UPLOAD | Open Document | Open Filing | Mar 31, 2025 | 377-07823 | ||
| CORRESP | Open Document | Open Filing | Mar 26, 2025 | |||
| DRS | Open Document | Open Filing | Mar 26, 2025 | 377-07823 | ||
| 6-K | Open Document | Open Filing | 6-K | Mar 26, 2025 | Mar 26, 2025 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 26, 2025 | Dec 31, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 26, 2025 | Mar 26, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 20, 2025 | Mar 20, 2025 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 10, 2025 | Mar 10, 2025 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | Feb 11, 2025 | Feb 11, 2025 | 000-16050 |
| SCHEDULE 13G/A | Open Document | Open Filing | Jan 23, 2025 | 005-39216 | ||
| 6-K | Open Document | Open Filing | 6-K | Dec 16, 2024 | Dec 16, 2024 | 000-16050 |
| 144 | Open Document | Open Filing | Dec 12, 2024 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Dec 11, 2024 | Dec 11, 2024 | 000-16050 |
| 144 | Open Document | Open Filing | Dec 6, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Dec 5, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Dec 5, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Dec 3, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Dec 3, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Nov 29, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Nov 27, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Nov 27, 2024 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Nov 19, 2024 | Nov 19, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 18, 2024 | Nov 18, 2024 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 8 TO SCHEDULE 13G | Nov 4, 2024 | 005-39216 | |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Oct 1, 2024 | 005-39216 | |
| 144 | Open Document | Open Filing | Sep 20, 2024 | 000-16050 | ||
| 144 | Open Document | Open Filing | Sep 12, 2024 | 000-16050 | ||
| SC 13G | Open Document | Open Filing | SC 13G | Sep 12, 2024 | 005-39216 | |
| SC 13G | Open Document | Open Filing | 6-K | Sep 9, 2024 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Sep 6, 2024 | Sep 6, 2024 | 000-16050 |
| 144 | Open Document | Open Filing | Sep 5, 2024 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | Sep 3, 2024 | Sep 3, 2024 | 000-16050 |
| SC 13D/A | Open Document | Open Filing | SC 13D\A | Sep 3, 2024 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Aug 28, 2024 | Aug 28, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 28, 2024 | Aug 28, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 15, 2024 | Aug 15, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 10, 2024 | Jun 10, 2024 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 29, 2024 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 22, 2024 | May 22, 2024 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 22, 2024 | May 22, 2024 | 000-16050 |
| 20-F/A | Open Document | Data | Open Filing | 20-F/A | Mar 7, 2024 | Dec 31, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 6, 2024 | Mar 6, 2024 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 6, 2024 | Dec 31, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 6, 2024 | Mar 6, 2024 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 7 TO SCHEDULE 13G | Jan 31, 2024 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Jan 16, 2024 | Jan 16, 2024 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 6 TO SCHEDULE 13G | Jan 4, 2024 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Dec 22, 2023 | Dec 22, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Dec 14, 2023 | Dec 14, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Dec 1, 2023 | Dec 1, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 20, 2023 | Nov 20, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 13, 2023 | Nov 13, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 30, 2023 | Aug 30, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 29, 2023 | Aug 29, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 21, 2023 | Aug 21, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 15, 2023 | Aug 15, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 13, 2023 | Jul 13, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 10, 2023 | Jul 10, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 13, 2023 | Jun 13, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 7, 2023 | Jun 7, 2023 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 31, 2023 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 30, 2023 | May 30, 2023 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 29, 2023 | Mar 29, 2023 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 29, 2023 | Dec 31, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Feb 6, 2023 | Feb 6, 2023 | 000-16050 |
| S-8 | Open Document | Open Filing | S-8 | Dec 20, 2022 | 333-268906 | |
| 6-K | Open Document | Open Filing | 6-K | Nov 30, 2022 | Nov 30, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 8, 2022 | Nov 8, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 1, 2022 | Nov 1, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Oct 18, 2022 | Oct 18, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Oct 3, 2022 | Oct 3, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 30, 2022 | Aug 30, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 18, 2022 | Jul 18, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 10, 2022 | Jun 10, 2022 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 9, 2022 | Jun 9, 2022 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 31, 2022 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 31, 2022 | May 31, 2022 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | Mar 14, 2022 | Dec 31, 2021 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | Mar 9, 2022 | Mar 9, 2022 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 5 TO SCHEDULE 13G | Feb 7, 2022 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Nov 10, 2021 | Nov 10, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 4, 2021 | Nov 4, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 30, 2021 | Aug 30, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 5, 2021 | Aug 5, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 26, 2021 | Jul 26, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 1, 2021 | Jul 1, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 14, 2021 | Jun 14, 2021 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 27, 2021 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 19, 2021 | May 19, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 13, 2021 | May 13, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 30, 2021 | Mar 30, 2021 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 30, 2021 | Dec 31, 2020 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 4 TO SCHEDULE 13G | Feb 2, 2021 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Jan 5, 2021 | Jan 5, 2021 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 12, 2020 | Nov 12, 2020 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Oct 6, 2020 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Sep 24, 2020 | Sep 24, 2020 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 27, 2020 | Aug 27, 2020 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 16, 2020 | Jul 16, 2020 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 1, 2020 | Jul 1, 2020 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 28, 2020 | May 28, 2020 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 27, 2020 | May 27, 2020 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 27, 2020 | 000-16050 | |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 19, 2020 | Dec 31, 2019 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 18, 2020 | 005-39216 | |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 3 TO SCHEDULE 13G | Feb 10, 2020 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Nov 29, 2019 | Nov 29, 2019 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 29, 2019 | Aug 29, 2019 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 24, 2019 | Jun 24, 2019 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 30, 2019 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 23, 2019 | May 23, 2019 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 15, 2019 | May 15, 2019 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Apr 15, 2019 | Apr 15, 2019 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 27, 2019 | Dec 31, 2018 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Feb 14, 2019 | 005-39216 | |
| SC 13G/A | Open Document | Open Filing | AMENDMENT NO. 2 TO SCHEDULE 13G | Feb 11, 2019 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Nov 28, 2018 | Nov 28, 2018 | 000-16050 |
| S-8 | Open Document | Open Filing | S-8 | Nov 13, 2018 | 333-228345 | |
| SC 13G | Open Document | Open Filing | SC 13G | Oct 29, 2018 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Oct 4, 2018 | Oct 4, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 13, 2018 | Sep 13, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 4, 2018 | Sep 4, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 30, 2018 | Aug 30, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 30, 2018 | Aug 30, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 23, 2018 | Jul 23, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 27, 2018 | Jun 27, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 12, 2018 | Jun 12, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 31, 2018 | May 31, 2018 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 31, 2018 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 30, 2018 | May 30, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 14, 2018 | May 14, 2018 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 25, 2018 | Dec 31, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 29, 2018 | Mar 29, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 27, 2018 | Mar 27, 2018 | 000-16050 |
| SC 13G/A | Open Document | Open Filing | SC 13G/A | Jan 31, 2018 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Jan 9, 2018 | Jan 9, 2018 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Dec 29, 2017 | Dec 29, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 24, 2017 | Nov 24, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 15, 2017 | Nov 15, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 1, 2017 | Nov 1, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 1, 2017 | Nov 1, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 25, 2017 | Sep 25, 2017 | 000-16050 |
| SC 13G | Open Document | Open Filing | SC 13G | Sep 18, 2017 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Aug 15, 2017 | Aug 15, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 14, 2017 | Aug 14, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 18, 2017 | Jul 18, 2017 | 000-16050 |
| S-8 | Open Document | Open Filing | S-8 | Jun 29, 2017 | 333-219031 | |
| 6-K | Open Document | Open Filing | 6-K | Jun 28, 2017 | Jun 28, 2017 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 25, 2017 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 22, 2017 | May 22, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 22, 2017 | May 22, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 17, 2017 | May 17, 2017 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 6, 2017 | Dec 31, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 15, 2017 | Mar 15, 2017 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 7, 2017 | Mar 7, 2017 | 000-16050 |
| UPLOAD | Open Document | Open Filing | Jan 25, 2017 | |||
| CORRESP | Open Document | Open Filing | Jan 18, 2017 | |||
| UPLOAD | Open Document | Open Filing | Dec 22, 2016 | |||
| 6-K | Open Document | Open Filing | 6-K | Dec 21, 2016 | Dec 21, 2016 | 000-16050 |
| SC 13D/A | Open Document | Open Filing | SC13D/A | Dec 12, 2016 | 005-39216 | |
| 6-K | Open Document | Open Filing | 6-K | Dec 1, 2016 | Dec 1, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 18, 2016 | Nov 18, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 3, 2016 | Nov 3, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 29, 2016 | Sep 29, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 29, 2016 | Sep 29, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 31, 2016 | Aug 31, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 29, 2016 | Jun 29, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 23, 2016 | Jun 23, 2016 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | May 31, 2016 | May 31, 2016 | 000-16050 |
| SD | Open Document | Open Filing | SD | May 31, 2016 | 000-16050 | |
| 6-K | Open Document | Open Filing | 6-K | May 20, 2016 | May 20, 2016 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Apr 21, 2016 | Dec 31, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Apr 21, 2016 | Apr 21, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Apr 20, 2016 | Apr 20, 2016 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | Apr 20, 2016 | Apr 20, 2016 | 000-16050 |
| 6-K | Open Document | Data | Open Filing | 6-K | Apr 11, 2016 | Apr 11, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 31, 2016 | Mar 31, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 15, 2016 | Mar 15, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 1, 2016 | Mar 1, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 1, 2016 | Mar 1, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Feb 26, 2016 | Feb 26, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Feb 24, 2016 | Feb 24, 2016 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Feb 8, 2016 | Feb 8, 2016 | 000-16050 |
| S-8 | Open Document | Open Filing | S-8 | Jan 14, 2016 | 333-208990 | |
| 6-K | Open Document | Open Filing | 6-K | Dec 1, 2015 | Dec 1, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 27, 2015 | Nov 27, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Nov 4, 2015 | Nov 4, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Oct 19, 2015 | Oct 19, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 8, 2015 | Sep 8, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 8, 2015 | Sep 8, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 10, 2015 | Aug 10, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 10, 2015 | Aug 10, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 29, 2015 | Jul 29, 2015 | 000-16050 |
| SD | Open Document | Open Filing | May 28, 2015 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | May 28, 2015 | May 28, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 14, 2015 | May 14, 2015 | 000-16050 |
| 20-F/A | Open Document | Open Filing | 20-F/A | Mar 23, 2015 | Dec 31, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 23, 2015 | Mar 23, 2015 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 23, 2015 | Dec 31, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 11, 2015 | Mar 11, 2015 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Dec 1, 2014 | Dec 1, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Sep 22, 2014 | Sep 22, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Aug 7, 2014 | Aug 7, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jul 9, 2014 | Jul 9, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Jun 25, 2014 | Jun 25, 2014 | 000-16050 |
| SD | Open Document | Open Filing | May 30, 2014 | 000-16050 | ||
| 6-K | Open Document | Open Filing | 6-K | May 27, 2014 | May 27, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 20, 2014 | May 20, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | May 15, 2014 | May 15, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Apr 29, 2014 | Apr 29, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 27, 2014 | Mar 27, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 24, 2014 | Mar 24, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 21, 2014 | Mar 21, 2014 | 000-16050 |
| 20-F | Open Document | Data | Open Filing | 20-F | Mar 21, 2014 | Dec 31, 2013 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Mar 20, 2014 | Mar 20, 2014 | 000-16050 |
| 6-K | Open Document | Open Filing | 6-K | Feb 18, 2014 | Feb 18, 2014 | 000-16050 |