| Date Filed | Type | Description |
| 03/30/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 03/02/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 03/20/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 03/29/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/29/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/29/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/11/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/31/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 04/04/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/16/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 04/04/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/31/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/30/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 04/15/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/04/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 04/02/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 05/13/1998 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/26/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/31/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/04/1996 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 04/01/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |