| Date Filed | Type | Description |
| 04/28/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 02/04/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/11/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/13/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/04/2008 |
AR
| 2007 Annual Report |
| 02/01/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 08/09/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/01/2007 |
AR
| 2006 Annual Report |
| 08/09/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/09/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/15/2005 |
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 |
| 03/26/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/28/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/02/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 04/02/2001 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 10/25/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/30/2000 |
AR
| 1999 Annual Report |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/27/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 04/10/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 03/31/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 10/08/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |