| Date Filed | Type | Description |
| 12/14/2012 |
10-Q
| Quarterly Report for the period ended October 31, 2012 |
| 09/10/2012 |
10-Q
| Quarterly Report for the period ended July 31, 2012 |
| 06/11/2012 |
10-Q
| Quarterly Report for the period ended April 30, 2012 |
| 12/12/2011 |
10-Q
| Quarterly Report for the period ended October 31, 2011 |
| 09/08/2011 |
10-Q
| Quarterly Report for the period ended July 31, 2011 |
| 07/28/2011 |
10-Q
| Quarterly Report for the period ended October 31, 2010 |
| 07/28/2011 |
10-Q
| Quarterly Report for the period ended July 31, 2010 |
| 07/28/2011 |
10-Q
| Quarterly Report for the period ended April 30, 2010 |
| 06/22/2011 |
10-Q
| Quarterly Report for the period ended April 30, 2011 |
| 12/12/2005 |
10-Q
| Quarterly Report for the period ended October 31, 2005 |
| 09/08/2005 |
10-Q
| Quarterly Report for the period ended July 31, 2005 |
| 06/08/2005 |
10-Q
| Quarterly Report for the period ended April 30, 2005 |
| 12/08/2004 |
10-Q
| Quarterly Report for the period ended October 31, 2004 |
| 09/09/2004 |
10-Q
| Quarterly Report for the period ended July 31, 2004 |
| 06/08/2004 |
10-Q
| Quarterly Report for the period ended April 30, 2004 |
| 12/11/2003 |
10-Q
| Quarterly Report for the period ended October 31, 2003 |
| 09/12/2003 |
10-Q
| Quarterly Report for the period ended July 31, 2003 |
| 06/13/2003 |
10-Q
| Quarterly Report for the period ended April 30, 2003 |
| 12/13/2002 |
10-Q
| Quarterly Report for the period ended October 31, 2002 |
| 09/13/2002 |
10-Q
| Quarterly Report for the period ended July 31, 2002 |
| 06/12/2002 |
10-Q
| Quarterly Report for the period ended April 30, 2002 |
| 12/14/2001 |
10-Q
| Quarterly Report for the period ended October 31, 2001 |
| 09/14/2001 |
10-Q
| Quarterly Report for the period ended July 31, 2001 |
| 06/13/2001 |
10-Q
| Quarterly Report for the period ended April 30, 2001 |
| 12/14/2000 |
10-Q
| Quarterly Report for the period ended October 31, 2000 |
| 09/14/2000 |
10-Q
| Quarterly Report for the period ended July 31, 2000 |
| 06/14/2000 |
10-Q
| Quarterly Report for the period ended April 30, 2000 |
| 12/13/1999 |
10-Q
| Quarterly Report for the period ended October 31, 1999 |
| 09/14/1999 |
10-Q
| Quarterly Report for the period ended July 31, 1999 |
| 06/14/1999 |
10-Q
| Quarterly Report for the period ended April 30, 1999 |
| 12/11/1998 |
10-Q
| Quarterly Report for the period ended October 31, 1998 |
| 09/11/1998 |
10-Q
| Quarterly Report for the period ended July 31, 1998 |
| 06/10/1998 |
10-Q
| Quarterly Report for the period ended April 30, 1998 |
| 11/12/1997 |
10-Q
| Quarterly Report for the period ended September 30, 1997 |
|