| Date Filed | Type | Description |
| 02/14/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/14/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/08/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/10/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/12/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/03/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/15/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/14/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/11/2011 |
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 |
| 02/20/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/15/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/16/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/14/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/18/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 02/24/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 02/27/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/01/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/05/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/01/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/01/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 02/20/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/06/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 02/29/1996 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/08/1995 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/14/1994 |
10-K/A
| Annual Report for the period ended December 31, 1993 [amend] |
| 02/24/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |