| Date Filed | Type | Description |
| 08/05/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 07/29/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/30/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/30/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/25/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 04/14/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 05/04/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 05/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 04/28/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/31/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 04/29/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/30/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/30/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/01/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 06/26/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 05/11/2000 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 04/27/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 04/13/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 04/23/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 04/14/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/29/1998 |
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 |
| 06/30/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 04/30/1997 |
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 |
| 05/23/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/29/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/01/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 05/01/1995 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |