| Date Filed | Type | Description |
| 04/29/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/30/2011 |
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] |
| 03/23/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/24/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/26/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/29/2008 |
10-K/A
| Annual Report for the period ended April 25, 2008 [amend] |
| 03/26/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 04/30/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/30/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 04/28/2006 |
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 |
| 04/29/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/22/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 12/10/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 12/07/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 04/29/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/26/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/25/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/27/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/29/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 03/11/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/20/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 03/27/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 05/01/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/29/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/05/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/30/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/16/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 04/30/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 03/28/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 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-K/A
| Annual Report for the period ended December 31, 1994 [amend] |
|