| Date Filed | Type | Description |
| 03/04/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 03/19/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 02/27/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 03/15/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/14/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 04/07/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/16/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 03/15/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/06/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/07/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 06/25/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/11/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/14/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/11/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/12/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/11/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/10/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/22/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 12/04/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/03/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/14/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/27/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/22/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/15/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/27/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/27/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/28/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/16/1995 |
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 |