| Date Filed | Type | Description |
| 04/25/2013 |
10-K
| Annual Report for the period ended July 31, 2012 |
| 04/25/2013 |
10-K
| Annual Report for the period ended July 31, 2011 |
| 10/29/2010 |
10-K
| Annual Report for the period ended July 31, 2010 |
| 11/30/2009 |
10-K/A
| Annual Report for the period ended July 31, 2009 [amend] |
| 11/13/2009 |
10-K
| Annual Report for the period ended July 31, 2009 |
| 11/26/2008 |
10-K/A
| Annual Report for the period ended July 31, 2008 [amend] |
| 10/14/2008 |
10-K
| Annual Report for the period ended July 31, 2008 |
| 10/15/2007 |
10-K
| Annual Report for the period ended July 31, 2007 |
| 10/16/2006 |
10-K
| Annual Report for the period ended July 31, 2006 |
| 10/14/2005 |
10-K
| Annual Report for the period ended July 31, 2005 |
| 10/14/2004 |
10-K
| Annual Report for the period ended July 31, 2004 |
| 10/29/2003 |
10-K
| Annual Report for the period ended July 31, 2003 |
| 11/19/2002 |
10-K/A
| Annual Report for the period ended July 31, 2002 [amend] |
| 11/13/2002 |
10-K
| Annual Report for the period ended July 31, 2002 |
| 10/29/2001 |
10-K
| Annual Report for the period ended July 31, 2001 |
| 10/30/2000 |
10-K
| Annual Report for the period ended July 31, 2000 |
| 11/15/1999 |
10-K
| Annual Report for the period ended July 31, 1999 |
| 10/29/1998 |
10-K
| Annual Report for the period ended July 31, 1998 |
| 01/22/1998 |
10-K/A
| Annual Report for the period ended July 31, 1997 [amend] |
| 10/29/1997 |
10-K
| Annual Report for the period ended July 31, 1997 |