| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 8-K | Open Document | Data | Open Filing | FORM 8-K | 09 Dec 2025 | 08 Dec 2025 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Nov 2025 | 30 Sep 2025 | 000-52610 |
| ARS | Open Document | Open Filing | FORM ARS | 02 Oct 2025 | 31 Dec 2024 | 000-52610 |
| DEF 14A | Open Document | Open Filing | FORM DEF 14A | 01 Oct 2025 | 08 Dec 2025 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2025 | 30 Jun 2025 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | 24 Jul 2025 | 18 Jul 2025 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2025 | 31 Mar 2025 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 31 Mar 2025 | 31 Dec 2024 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 12 Dec 2024 | 09 Dec 2024 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Nov 2024 | 30 Sep 2024 | 000-52610 |
| ARS | Open Document | Open Filing | ARS | 10 Oct 2024 | 31 Dec 2023 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEF 14A | 10 Oct 2024 | 09 Dec 2024 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Aug 2024 | 30 Jun 2024 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 15 May 2024 | 31 Mar 2024 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 01 Apr 2024 | 31 Dec 2023 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 15 Dec 2023 | 14 Dec 2023 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 04 Dec 2023 | 29 Nov 2023 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Nov 2023 | 30 Sep 2023 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEF 14A | 16 Oct 2023 | 14 Dec 2023 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Aug 2023 | 30 Jun 2023 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 15 May 2023 | 31 Mar 2023 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 30 Mar 2023 | 31 Dec 2022 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 11 Jan 2023 | 21 Dec 2022 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 14 Dec 2022 | 08 Dec 2022 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 12 Dec 2022 | 08 Dec 2022 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Nov 2022 | 30 Sep 2022 | 000-52610 |
| DEFA14A | Open Document | Open Filing | DEFA14A | 09 Nov 2022 | 000-52610 | |
| DEF 14A | Open Document | Open Filing | PRE 14A | 18 Oct 2022 | 08 Dec 2022 | 000-52610 |
| PRE 14A | Open Document | Open Filing | PRE 14A | 07 Oct 2022 | 07 Oct 2022 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 11 Aug 2022 | 30 Jun 2022 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 13 May 2022 | 31 Mar 2022 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 23 Mar 2022 | 31 Dec 2021 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 20 Dec 2021 | 16 Dec 2021 | 000-52610 |
| 8-K | Open Document | Data | Open Filing | 8-K | 17 Dec 2021 | 16 Dec 2021 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 12 Nov 2021 | 30 Sep 2021 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEF 14A | 19 Oct 2021 | 16 Dec 2021 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 21 Sep 2021 | 16 Sep 2021 | 000-52610 |
| 3 | Open Document | Open Filing | 3 | 19 Aug 2021 | 10 Aug 2021 | |
| 8-K | Open Document | Open Filing | 8-K | 16 Aug 2021 | 10 Aug 2021 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 11 Aug 2021 | 30 Jun 2021 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 May 2021 | 31 Mar 2021 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 19 Mar 2021 | 31 Dec 2020 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 04 Dec 2020 | 03 Dec 2020 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 03 Dec 2020 | 03 Dec 2020 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 10 Nov 2020 | 30 Sep 2020 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEF 14A | 09 Oct 2020 | 03 Dec 2020 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 07 Aug 2020 | 30 Jun 2020 | 000-52610 |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 29 Jul 2020 | 005-86416 | |
| CORRESP | Open Document | Open Filing | 07 Jul 2020 | |||
| CORRESP | Open Document | Open Filing | 26 Jun 2020 | |||
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 26 Jun 2020 | 005-86416 | |
| UPLOAD | Open Document | Open Filing | 22 Jun 2020 | |||
| SC TO-I | Open Document | Open Filing | SC TO-I | 15 Jun 2020 | 005-86416 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 15 May 2020 | 31 Mar 2020 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 30 Mar 2020 | 31 Dec 2019 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 12 Dec 2019 | 10 Dec 2019 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 12 Dec 2019 | 10 Dec 2019 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Nov 2019 | 30 Sep 2019 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEFINITIVE PROXY STATEMENT | 17 Oct 2019 | 10 Dec 2019 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2019 | 30 Jun 2019 | 000-52610 |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 20 Jun 2019 | 005-86416 | |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 03 Jun 2019 | 005-86416 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 15 May 2019 | 31 Mar 2019 | 000-52610 |
| SC TO-I | Open Document | Open Filing | SCHEDULE TO | 19 Apr 2019 | 005-86416 | |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 01 Apr 2019 | 31 Dec 2018 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 13 Feb 2019 | 12 Feb 2019 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 04 Feb 2019 | 01 Feb 2019 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 17 Dec 2018 | 13 Dec 2018 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 13 Dec 2018 | 13 Dec 2018 | 000-52610 |
| UPLOAD | Open Document | Open Filing | 06 Dec 2018 | |||
| CORRESP | Open Document | Open Filing | 30 Nov 2018 | |||
| UPLOAD | Open Document | Open Filing | 15 Nov 2018 | |||
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Nov 2018 | 30 Sep 2018 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEFINITIVE PROXY STATEMENT | 23 Oct 2018 | 13 Dec 2018 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 17 Oct 2018 | 16 Oct 2018 | 000-52610 |
| S-3D | Open Document | Open Filing | FORM S-3D | 17 Oct 2018 | 333-227864 | |
| S-3DPOS | Open Document | Open Filing | S-3DPOS | 17 Oct 2018 | 333-182634 | |
| 8-K | Open Document | Open Filing | FORM 8-K | 29 Aug 2018 | 27 Aug 2018 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2018 | 30 Jun 2018 | 000-52610 |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 26 Jul 2018 | 005-86416 | |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 16 Jul 2018 | 005-86416 | |
| 8-K | Open Document | Open Filing | 8-K | 29 Jun 2018 | 29 Jun 2018 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 14 Jun 2018 | 14 Jun 2018 | 000-52610 |
| SC TO-I | Open Document | Open Filing | SC TO-I | 14 Jun 2018 | 005-86416 | |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 15 May 2018 | 31 Mar 2018 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 07 May 2018 | 07 May 2018 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 12 Mar 2018 | 31 Dec 2017 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 13 Dec 2017 | 11 Dec 2017 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 12 Dec 2017 | 11 Dec 2017 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Nov 2017 | 30 Sep 2017 | 000-52610 |
| DEFA14A | Open Document | Open Filing | DEFA14A | 13 Nov 2017 | 000-52610 | |
| DEFA14A | Open Document | Open Filing | DEFA14A | 25 Oct 2017 | 000-52610 | |
| DEF 14A | Open Document | Open Filing | DEF 14A | 20 Oct 2017 | 11 Dec 2017 | 000-52610 |
| PRE 14A | Open Document | Open Filing | PRE 14A | 04 Oct 2017 | 04 Oct 2017 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2017 | 30 Jun 2017 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 15 May 2017 | 31 Mar 2017 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 20 Mar 2017 | 31 Dec 2016 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 02 Dec 2016 | 02 Dec 2015 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Nov 2016 | 30 Sep 2016 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEFINITIVE PROXY STATEMENT | 17 Oct 2016 | 01 Dec 2016 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 06 Oct 2016 | 06 Oct 2016 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 06 Oct 2016 | 06 Oct 2016 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 15 Aug 2016 | 30 Jun 2016 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 16 May 2016 | 31 Mar 2016 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 27 Apr 2016 | 21 Apr 2016 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 24 Mar 2016 | 31 Dec 2015 | 000-52610 |
| UPLOAD | Open Document | Open Filing | 07 Mar 2016 | |||
| CORRESP | Open Document | Open Filing | 15 Jan 2016 | |||
| UPLOAD | Open Document | Open Filing | 23 Dec 2015 | |||
| 8-K | Open Document | Open Filing | 8-K | 03 Dec 2015 | 03 Dec 2015 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Nov 2015 | 30 Sep 2015 | 000-52610 |
| DEF 14A | Open Document | Open Filing | DEF 14A | 03 Nov 2015 | 03 Dec 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | 8-K | 03 Nov 2015 | 28 Oct 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 20 Aug 2015 | 14 Aug 2015 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2015 | 30 Jun 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 16 Jun 2015 | 10 Jun 2015 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2015 | 31 Mar 2015 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 31 Mar 2015 | 31 Dec 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 02 Mar 2015 | 26 Feb 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 18 Feb 2015 | 11 Feb 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 04 Feb 2015 | 19 Jan 2015 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 20 Jan 2015 | 14 Jan 2015 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 14 Nov 2014 | 30 Sep 2014 | 000-52610 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Sep 2014 | 22 Sep 2014 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Sep 2014 | 22 Sep 2014 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Sep 2014 | 22 Sep 2014 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 22 Sep 2014 | 22 Sep 2014 | |
| 8-K | Open Document | Open Filing | FORM 8-K | 22 Sep 2014 | 22 Sep 2014 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | 10-Q | 08 Aug 2014 | 30 Jun 2014 | 000-52610 |
| DEF 14A | Open Document | Open Filing | SCHEDULE 14A | 04 Aug 2014 | 22 Sep 2014 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2014 | 31 Mar 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 17 Apr 2014 | 17 Apr 2014 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 31 Mar 2014 | 31 Dec 2013 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 26 Feb 2014 | 26 Feb 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 14 Feb 2014 | 14 Feb 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 10 Feb 2014 | 10 Feb 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 05 Feb 2014 | 31 Jan 2014 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 31 Dec 2013 | 30 Dec 2013 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 20 Dec 2013 | 20 Dec 2013 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Nov 2013 | 30 Sep 2013 | 000-52610 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Sep 2013 | 16 Sep 2013 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Sep 2013 | 16 Sep 2013 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 17 Sep 2013 | 16 Sep 2013 | |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 16 Sep 2013 | 16 Sep 2013 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 12 Sep 2013 | 12 Sep 2013 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Aug 2013 | 30 Jun 2013 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 06 Aug 2013 | 06 Aug 2013 | 000-52610 |
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 30 Jul 2013 | 005-86416 | |
| DEF 14A | Open Document | Open Filing | 12 Jul 2013 | 16 Sep 2013 | 000-52610 | |
| 8-K | Open Document | Open Filing | FORM 8-K | 27 Jun 2013 | 27 Jun 2013 | 000-52610 |
| SC TO-T/A | Open Document | Open Filing | TENDER OFFER STATEMENT | 21 May 2013 | 005-86416 | |
| 8-K | Open Document | Open Filing | FORM 8-K | 16 May 2013 | 16 May 2013 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 May 2013 | 31 Mar 2013 | 000-52610 |
| CORRESP | Open Document | Open Filing | 07 May 2013 | |||
| SC TO-I/A | Open Document | Open Filing | SC TO-I/A | 07 May 2013 | 005-86416 | |
| UPLOAD | Open Document | Open Filing | 06 May 2013 | |||
| SC TO-I | Open Document | Open Filing | SC TO-I | 01 May 2013 | 005-86416 | |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 29 Apr 2013 | 29 Apr 2013 | 000-52610 |
| SC TO-T/A | Open Document | Open Filing | SC TO-T/A | 24 Apr 2013 | 005-86416 | |
| SC TO-C | Open Document | Open Filing | SCHEDULE TO-C | 18 Apr 2013 | 005-86416 | |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 18 Apr 2013 | 18 Apr 2013 | 000-52610 |
| SC TO-T/A | Open Document | Open Filing | SC TO-T/A | 15 Apr 2013 | 005-86416 | |
| SC TO-T | Open Document | Open Filing | SC TO-T | 10 Apr 2013 | 005-86416 | |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 29 Mar 2013 | 31 Dec 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 19 Mar 2013 | 19 Mar 2013 | 000-52610 |
| UPLOAD | Open Document | Open Filing | 20 Feb 2013 | |||
| 8-K | Open Document | Open Filing | CURRENT REPORT | 19 Feb 2013 | 18 Feb 2013 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 31 Jan 2013 | 31 Jan 2013 | 000-52610 |
| CORRESP | Open Document | Open Filing | 18 Jan 2013 | |||
| 8-K | Open Document | Open Filing | FORM 8-K | 16 Jan 2013 | 21 Dec 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 03 Jan 2013 | 03 Jan 2013 | 000-52610 |
| UPLOAD | Open Document | Open Filing | 20 Dec 2012 | |||
| 8-K | Open Document | Open Filing | FORM 8-K | 10 Dec 2012 | 04 Dec 2012 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 16 Nov 2012 | 30 Sep 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 05 Oct 2012 | 05 Oct 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | CURRENT REPORT | 20 Aug 2012 | 20 Aug 2012 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2012 | 30 Jun 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 31 Jul 2012 | 30 Jul 2012 | 000-52610 |
| 8-K | Open Document | Open Filing | FORM 8-K | 30 Jul 2012 | 30 Jul 2012 | 000-52610 |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Jul 2012 | 30 Jul 2012 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Jul 2012 | 30 Jul 2012 | |
| 4 | Open Document | Open Filing | OWNERSHIP DOCUMENT | 30 Jul 2012 | 30 Jul 2012 | |
| S-3D | Open Document | Open Filing | S-3D | 12 Jul 2012 | 333-182634 | |
| 8-K | Open Document | Open Filing | FORM 8-K | 28 Jun 2012 | 28 Jun 2012 | 000-52610 |
| DEF 14A | Open Document | Open Filing | SCHEDULE 14A | 04 Jun 2012 | 30 Jul 2012 | 000-52610 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2012 | 31 Mar 2012 | 000-52610 |
| 10-K | Open Document | Data | Open Filing | 10-K | 30 Mar 2012 | 31 Dec 2011 | 000-52610 |
| 424B3 | Open Document | Open Filing | 424B3 | 13 Mar 2012 | 333-166930 | |
| 8-K | Open Document | Open Filing | 8-K | 09 Mar 2012 | 09 Mar 2012 | 000-52610 |
| SC TO-I/A | Open Document | Open Filing | AMENDMENT TO SCHEDULE TO-I | 04 Jan 2012 | 005-86416 |