| Date Filed | Type | Description |
| 02/22/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 02/18/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/13/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/14/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/13/2018 |
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 |
| 02/24/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/02/2015 |
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 |
| 02/28/2013 |
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 |
| 03/01/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/27/2009 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 03/07/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/07/2008 |
AR
| 2007 Annual Report |
| 03/01/2007 |
AR
| 2006 Annual Report |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/08/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/08/2006 |
AR
| 2005 Annual Report |
| 03/11/2005 |
AR
| 2004 Annual Report |
| 03/10/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/11/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/11/2004 |
AR
| 2003 Annual Report |
| 03/17/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/17/2003 |
AR
| 2002 Annual Report |
| 03/15/2002 |
AR
| 2001 Annual Report |
| 03/15/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/16/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/15/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 02/07/2000 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/18/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/01/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
|