| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 15-12G | Open Document | Open Filing | FORM 15-12G | 20 Dec 2022 | 000-08952 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Nov 2022 | 30 Sep 2022 | 000-08952 |
| DEF 14C | Open Document | Open Filing | FORM DEF 14C | 28 Oct 2022 | 27 Oct 2022 | 000-08952 |
| PRE 14C | Open Document | Open Filing | FORM PRE 14C | 22 Sep 2022 | 22 Sep 2022 | 000-08952 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | 25 Aug 2022 | 22 Aug 2022 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 15 Aug 2022 | 30 Jun 2022 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 16 May 2022 | 31 Mar 2022 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 31 Mar 2022 | 31 Dec 2021 | 000-08952 |
| 8-K | Open Document | Data | Open Filing | FORM 8-K | 23 Mar 2022 | 01 Feb 2022 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Nov 2021 | 30 Sep 2021 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Aug 2021 | 30 Jun 2021 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 04 Jun 2021 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2021 | 31 Mar 2021 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 30 Mar 2021 | 31 Dec 2020 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Nov 2020 | 30 Sep 2020 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Aug 2020 | 30 Jun 2020 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2020 | 31 Mar 2020 | 000-08952 |
| 8-K | Open Document | Open Filing | FORM 8-K | 01 Apr 2020 | 01 Apr 2020 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 26 Mar 2020 | 31 Dec 2019 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 10 Mar 2020 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Nov 2019 | 30 Sep 2019 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 05 Sep 2019 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Aug 2019 | 30 Jun 2019 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 18 Jun 2019 | 005-40543 | |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 17 May 2019 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 15 May 2019 | 31 Mar 2019 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 28 Mar 2019 | 31 Dec 2018 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 19 Dec 2018 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Nov 2018 | 30 Sep 2018 | 000-08952 |
| 8-K | Open Document | Open Filing | FORM 8-K | 09 Oct 2018 | 04 Oct 2018 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 10 Aug 2018 | 30 Jun 2018 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 14 Jun 2018 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 May 2018 | 31 Mar 2018 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 28 Mar 2018 | 31 Dec 2017 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 07 Dec 2017 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 13 Nov 2017 | 30 Sep 2017 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 10 Aug 2017 | 30 Jun 2017 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 05 Jun 2017 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 10 May 2017 | 31 Mar 2017 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 28 Mar 2017 | 31 Dec 2016 | 000-08952 |
| 8-K | Open Document | Open Filing | FORM 8-K | 27 Dec 2016 | 21 Dec 2016 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 10 Nov 2016 | 30 Sep 2016 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 06 Oct 2016 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 09 Aug 2016 | 30 Jun 2016 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 01 Jun 2016 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 09 May 2016 | 31 Mar 2016 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 29 Mar 2016 | 31 Dec 2015 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Nov 2015 | 30 Sep 2015 | 000-08952 |
| 8-K | Open Document | Open Filing | FORM 8-K | 21 Sep 2015 | 17 Sep 2015 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 08 Sep 2015 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 14 Aug 2015 | 30 Jun 2015 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 May 2015 | 31 Mar 2015 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | FORM 10-K | 24 Apr 2015 | 31 Dec 2014 | 000-08952 |
| NT 10-K | Open Document | Open Filing | FORM NT 10-K | 27 Mar 2015 | 31 Dec 2014 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Nov 2014 | 30 Sep 2014 | 000-08952 |
| SC 13D/A | Open Document | Open Filing | SCHEDULE 13D/A | 21 Aug 2014 | 005-40543 | |
| 10-Q | Open Document | Data | Open Filing | FORM 10-Q | 12 Aug 2014 | 30 Jun 2014 | 000-08952 |
| 10-Q | Open Document | Data | Open Filing | SBPARTNERS10Q033113 | 13 May 2014 | 31 Mar 2014 | 000-08952 |
| 10-K | Open Document | Data | Open Filing | 22 Apr 2014 | 31 Dec 2013 | 000-08952 | |
| NT 10-K | Open Document | Open Filing | 31 Mar 2014 | 31 Dec 2013 | 000-08952 |