| Date Filed | Type | Description |
| 02/27/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 08/02/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 02/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/24/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 12/03/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 02/24/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/02/2009 |
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 |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/02/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/14/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 06/04/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 05/25/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/19/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 02/28/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/28/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/28/2001 |
AR
| 2000 Annual Report |
| 03/15/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/30/1999 |
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] |
| 03/20/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |