| Date Filed | Type | Description |
| 02/22/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/25/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/24/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/21/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/23/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/24/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/25/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/25/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/27/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/27/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/23/2012 |
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 |
| 02/26/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/26/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/28/2008 |
AR
| 2007 Annual Report on Form 10-K |
| 02/21/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/28/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/28/2006 |
AR
| 2005 Annual Report on Form 10-K |
| 03/04/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 02/27/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/26/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/13/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 03/11/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/07/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/09/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/29/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/09/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/11/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/14/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/13/1995 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/14/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |