| Date Filed | Type | Description |
| 10/20/2016 |
10-K
| Annual Report for the period ended July 31, 2016 |
| 10/13/2015 |
10-K
| Annual Report for the period ended July 31, 2015 |
| 10/15/2014 |
10-K
| Annual Report for the period ended July 31, 2014 |
| 10/21/2013 |
10-K
| Annual Report for the period ended July 31, 2013 |
| 10/23/2012 |
10-K
| Annual Report for the period ended July 31, 2012 |
| 10/17/2011 |
10-K
| Annual Report for the period ended July 31, 2011 |
| 10/20/2010 |
10-K
| Annual Report for the period ended July 31, 2010 |
| 10/14/2009 |
10-K
| Annual Report for the period ended July 31, 2009 |
| 10/01/2008 |
10-K
| Annual Report for the period ended July 31, 2008 |
| 11/28/2000 |
10-K/A
| Annual Report for the period ended July 31, 2000 [amend] |
| 10/31/2000 |
10-K
| Annual Report for the period ended July 31, 2000 |
| 05/03/2000 |
10-K/A
| Annual Report for the period ended July 31, 1997 [amend] |
| 05/03/2000 |
10-K/A
| Annual Report for the period ended July 31, 1998 [amend] |
| 05/03/2000 |
10-K
| Annual Report for the period ended July 31, 1999 |
| 10/29/1997 |
10-K
| Annual Report for the period ended July 31, 1997 |
| 12/09/1996 |
10-K/A
| Annual Report for the period ended July 31, 1996 [amend] |
| 11/14/1996 |
10-K
| Annual Report for the period ended July 31, 1996 |