| Date Filed | Type | Description |
| 06/14/2017 |
10-Q
| Quarterly Report for the period ended April 30, 2017 |
| 03/17/2017 |
10-Q
| Quarterly Report for the period ended January 31, 2017 |
| 12/15/2016 |
10-Q
| Quarterly Report for the period ended October 31, 2016 |
| 06/14/2016 |
10-Q
| Quarterly Report for the period ended April 30, 2016 |
| 03/16/2016 |
10-Q
| Quarterly Report for the period ended January 31, 2016 |
| 12/15/2015 |
10-Q
| Quarterly Report for the period ended October 31, 2015 |
| 06/15/2015 |
10-Q
| Quarterly Report for the period ended April 30, 2015 |
| 03/17/2015 |
10-Q
| Quarterly Report for the period ended January 31, 2015 |
| 12/15/2014 |
10-Q
| Quarterly Report for the period ended October 31, 2014 |
| 06/16/2014 |
10-Q
| Quarterly Report for the period ended April 30, 2014 |
| 03/17/2014 |
10-Q
| Quarterly Report for the period ended January 31, 2014 |
| 12/16/2013 |
10-Q
| Quarterly Report for the period ended October 31, 2013 |
| 06/11/2013 |
10-Q
| Quarterly Report for the period ended April 30, 2013 |
| 03/12/2013 |
10-Q
| Quarterly Report for the period ended January 31, 2013 |
| 12/17/2012 |
10-Q
| Quarterly Report for the period ended October 31, 2012 |
| 06/14/2012 |
10-Q
| Quarterly Report for the period ended April 30, 2012 |
| 03/15/2012 |
10-Q
| Quarterly Report for the period ended January 31, 2012 |
| 12/14/2011 |
10-Q
| Quarterly Report for the period ended October 31, 2011 |
| 06/14/2011 |
10-Q
| Quarterly Report for the period ended April 30, 2011 |
| 03/17/2011 |
10-Q
| Quarterly Report for the period ended January 31, 2011 |
| 12/15/2010 |
10-Q
| Quarterly Report for the period ended October 31, 2010 |
| 06/14/2010 |
10-Q
| Quarterly Report for the period ended April 30, 2010 |
| 03/17/2010 |
10-Q
| Quarterly Report for the period ended January 31, 2010 |
| 12/15/2009 |
10-Q
| Quarterly Report for the period ended October 31, 2009 |
| 06/15/2009 |
10-Q
| Quarterly Report for the period ended April 30, 2009 |
| 03/02/2009 |
10-Q
| Quarterly Report for the period ended January 31, 2009 |
| 12/15/2008 |
10-Q
| Quarterly Report for the period ended October 31, 2008 |
| 06/16/2008 |
10-Q
| Quarterly Report for the period ended April 30, 2008 |
| 06/16/2003 |
10-Q
| Quarterly Report for the period ended April 30, 2003 |
| 03/17/2003 |
10-Q
| Quarterly Report for the period ended January 31, 2003 |
| 12/16/2002 |
10-Q
| Quarterly Report for the period ended October 31, 2002 |
| 06/13/2002 |
10-Q
| Quarterly Report for the period ended April 30, 2002 |
| 03/18/2002 |
10-Q
| Quarterly Report for the period ended January 31, 2002 |
| 12/17/2001 |
10-Q
| Quarterly Report for the period ended October 31, 2001 |
|