| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Mar 20, 2024 | Feb 27, 2024 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 15, 2023 | Sep 30, 2023 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Nov 2, 2023 | Oct 31, 2023 | 000-28249 |
| DEFM14A | Open Document | Open Filing | DEFM14A | Sep 26, 2023 | 000-28249 | |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Sep 21, 2023 | Sep 19, 2023 | 000-28249 |
| PREM14A | Open Document | Open Filing | PREM14A | Sep 15, 2023 | Sep 15, 2023 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 2, 2023 | Jun 30, 2023 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Jun 21, 2023 | Jun 15, 2023 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Jun 12, 2023 | Jun 6, 2023 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 15, 2023 | Mar 31, 2023 | 000-28249 |
| DEFA14A | Open Document | Open Filing | DEFA14A | Apr 27, 2023 | 000-28249 | |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 27, 2023 | Jun 6, 2023 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | Mar 31, 2023 | Dec 31, 2022 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Nov 28, 2022 | Nov 28, 2022 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 15, 2022 | Sep 30, 2022 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 15, 2022 | Jun 30, 2022 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Jun 7, 2022 | Jun 2, 2022 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | 8-K | May 20, 2022 | Apr 22, 2022 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 13, 2022 | Mar 31, 2022 | 000-28249 |
| DEFA14A | Open Document | Open Filing | DEFA14A | Apr 22, 2022 | 000-28249 | |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 22, 2022 | Jun 2, 2022 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | Mar 30, 2022 | Dec 31, 2021 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 12, 2021 | Sep 30, 2021 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | 8-K | Oct 18, 2021 | Oct 12, 2021 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 13, 2021 | Jun 30, 2021 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Jun 14, 2021 | Jun 8, 2021 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | May 13, 2021 | Mar 31, 2021 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 30, 2021 | Jun 8, 2021 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 30, 2021 | Dec 31, 2020 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | Nov 16, 2020 | Sep 30, 2020 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Nov 5, 2020 | Oct 30, 2020 | 000-28249 |
| 4 | Open Document | Open Filing | Nov 3, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 4 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 3 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 3 | Open Document | Open Filing | Nov 2, 2020 | Oct 30, 2020 | ||
| 8-K | Open Document | Open Filing | 8-K | Oct 14, 2020 | Sep 25, 2020 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 13, 2020 | Jun 30, 2020 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Jun 9, 2020 | Jun 3, 2020 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 13, 2020 | Mar 31, 2020 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 27, 2020 | Jun 3, 2020 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 30, 2020 | Dec 31, 2019 | 000-28249 |
| 4 | Open Document | Open Filing | Nov 26, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 26, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 26, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 25, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 25, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 25, 2019 | Nov 25, 2019 | ||
| 4 | Open Document | Open Filing | Nov 25, 2019 | Nov 25, 2019 | ||
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 13, 2019 | Sep 30, 2019 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 12, 2019 | Jun 30, 2019 | 000-28249 |
| 8-K | Open Document | Open Filing | FORM 8-K | Jun 12, 2019 | Jun 6, 2019 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 14, 2019 | Mar 31, 2019 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 26, 2019 | Jun 6, 2019 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 29, 2019 | Dec 31, 2018 | 000-28249 |
| 5 | Open Document | Open Filing | Feb 6, 2019 | Dec 31, 2018 | ||
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 14, 2018 | Sep 30, 2018 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 10, 2018 | Jun 30, 2018 | 000-28249 |
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 4/A | Open Document | Open Filing | Jul 2, 2018 | Mar 3, 2017 | ||
| 8-K | Open Document | Open Filing | FORM 8-K | Jun 11, 2018 | Jun 5, 2018 | 000-28249 |
| S-8 | Open Document | Open Filing | S-8 | May 17, 2018 | 333-224995 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 14, 2018 | Mar 31, 2018 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 26, 2018 | Jun 5, 2018 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 29, 2018 | Dec 31, 2017 | 000-28249 |
| 4 | Open Document | Open Filing | Jan 2, 2018 | Jan 1, 2018 | ||
| 4 | Open Document | Open Filing | Dec 8, 2017 | Dec 8, 2017 | ||
| 10-Q | Open Document | Data | Open Filing | 10-Q | Nov 14, 2017 | Sep 30, 2017 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | Aug 15, 2017 | Jun 30, 2017 | 000-28249 |
| NT 10-Q | Open Document | Open Filing | NT 10-Q | Aug 15, 2017 | Jun 30, 2017 | 000-28249 |
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 4 | Open Document | Open Filing | Jul 5, 2017 | Jul 1, 2017 | ||
| 8-K | Open Document | Open Filing | 8-K | Jun 6, 2017 | Jun 1, 2017 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | May 12, 2017 | Mar 31, 2017 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 26, 2017 | Jun 1, 2017 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 31, 2017 | Dec 31, 2016 | 000-28249 |
| 4 | Open Document | Open Filing | Mar 7, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 7, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 6, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 6, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 6, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 6, 2017 | Mar 3, 2017 | ||
| 4 | Open Document | Open Filing | Mar 6, 2017 | Mar 3, 2017 | ||
| 10-Q | Open Document | Data | Open Filing | 10-Q | Nov 14, 2016 | Sep 30, 2016 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | Aug 12, 2016 | Jun 30, 2016 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Jun 9, 2016 | Jun 2, 2016 | 000-28249 |
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 4 | Open Document | Open Filing | Jun 6, 2016 | Jun 2, 2016 | ||
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 13, 2016 | Mar 31, 2016 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 26, 2016 | Jun 2, 2016 | 000-28249 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | Mar 31, 2016 | Mar 31, 2016 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 28, 2016 | Dec 31, 2015 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Nov 13, 2015 | Sep 30, 2015 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 13, 2015 | Jun 30, 2015 | 000-28249 |
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 4 | Open Document | Open Filing | Jul 1, 2015 | Jul 1, 2015 | ||
| 8-K | Open Document | Open Filing | FORM 8-K | Jun 11, 2015 | Jun 4, 2015 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 14, 2015 | Mar 31, 2015 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 28, 2015 | Jun 4, 2015 | 000-28249 |
| ARS | Open Document | Open Filing | AUTO-GENERATED PAPER DOCUMENT | Apr 27, 2015 | Dec 31, 2014 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | 10-K | Mar 26, 2015 | Dec 31, 2014 | 000-28249 |
| 8-K | Open Document | Open Filing | FORM 8-K | Mar 13, 2015 | Mar 13, 2015 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | Nov 14, 2014 | Sep 30, 2014 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Sep 15, 2014 | Sep 15, 2014 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | Aug 14, 2014 | Jun 30, 2014 | 000-28249 |
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 4 | Open Document | Open Filing | Jul 1, 2014 | Jul 1, 2014 | ||
| 8-K | Open Document | Open Filing | 8-K | Jun 11, 2014 | Jun 5, 2014 | 000-28249 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | May 14, 2014 | Mar 31, 2014 | 000-28249 |
| ARS | Open Document | Open Filing | AUTO-GENERATED PAPER DOCUMENT | Apr 28, 2014 | Dec 31, 2013 | 000-28249 |
| DEF 14A | Open Document | Open Filing | DEF 14A | Apr 28, 2014 | Jun 5, 2014 | 000-28249 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | Mar 25, 2014 | Dec 31, 2013 | 000-28249 |
| 8-K | Open Document | Open Filing | 8-K | Mar 14, 2014 | Mar 14, 2014 | 000-28249 |