| Date Filed | Type | Description |
| 02/23/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/25/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/26/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/27/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/28/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/23/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/24/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/19/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/28/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/29/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/24/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/02/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/29/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 08/03/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 07/03/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/09/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 07/05/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/02/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 07/02/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 02/18/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 07/02/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/19/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 07/03/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 03/22/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/22/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/28/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/13/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 06/29/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/11/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/30/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/25/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 03/20/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
|