| Date Filed | Type | Description |
| 02/17/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/19/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/27/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/20/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/16/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/14/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/12/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/13/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/13/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/14/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/19/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 02/16/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/14/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/12/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/11/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/12/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/15/2007 |
AR
| 2006 Annual Report |
| 02/14/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/17/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/24/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 02/26/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 02/26/2004 |
AR
| 2003 Annual Report |
| 03/03/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/03/2003 |
AR
| 2002 Annual Report |
| 03/25/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/26/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/13/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/26/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/26/1999 |
AR
| 1998 Annual Report |
| 03/30/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/26/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 03/27/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/29/1995 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/30/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |