| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2024 | 03 Jun 2024 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Dec 2023 | 27 Dec 2023 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2023 | 15 Feb 2023 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Nov 2022 | 29 Nov 2022 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Aug 2022 | 23 Aug 2022 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Jun 2022 | 14 Jun 2022 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 May 2022 | 24 May 2022 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2022 | 23 Feb 2022 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Nov 2021 | 18 Nov 2021 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Aug 2021 | 18 Aug 2021 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2021 | 12 May 2021 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Feb 2021 | 19 Feb 2021 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Nov 2020 | 12 Nov 2020 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Aug 2020 | 18 Aug 2020 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 May 2020 | 15 May 2020 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Mar 2020 | 11 Mar 2020 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Nov 2019 | 13 Nov 2019 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2019 | 13 Aug 2019 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2019 | 10 May 2019 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Feb 2019 | 21 Feb 2019 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2018 | 14 Nov 2018 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Aug 2018 | 10 Aug 2018 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 May 2018 | 10 May 2018 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2018 | 12 Feb 2018 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Nov 2017 | 13 Nov 2017 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Aug 2017 | 10 Aug 2017 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2017 | 15 May 2017 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2017 | 15 Mar 2017 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2017 | 14 Feb 2017 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Nov 2016 | 16 Nov 2016 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Aug 2016 | 10 Aug 2016 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2016 | 10 May 2016 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2016 | 10 Feb 2016 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Nov 2015 | 19 Nov 2015 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Aug 2015 | 25 Aug 2015 | 000-20914 |
| SC 13D/A | Open Document | Open Filing | OVB APPOINTED AS TRUSTEE OF ESOP & TRUST 070315 | 06 Jul 2015 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2015 | 10 Jun 2015 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2015 | 12 May 2015 | 000-20914 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A AMEND 2 | 10 Apr 2015 | ||
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 19 Feb 2015 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2015 | 10 Feb 2015 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Dec 2014 | 28 Nov 2014 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Aug 2014 | 26 Aug 2014 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Jun 2014 | 30 May 2014 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Feb 2014 | 10 Feb 2014 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Nov 2013 | 26 Nov 2013 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2013 | 14 Aug 2013 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2013 | 28 May 2013 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 May 2013 | 24 May 2013 | 000-20914 |
| SC 13D | Open Document | Open Filing | SCHEDULE 13D | 12 Mar 2013 | ||
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Mar 2013 | 06 Mar 2013 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jan 2013 | 04 Jan 2013 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Nov 2012 | 12 Nov 2012 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Aug 2012 | 13 Aug 2012 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Jun 2012 | 11 Jun 2012 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 May 2012 | 10 May 2012 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2012 | 17 Feb 2012 | 000-20914 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Jan 2012 | 11 Jan 2012 | 000-20914 |