| Date Filed | Type | Description |
| 12/15/2017 |
10-Q
| Quarterly Report for the period ended October 31, 2017 |
| 09/14/2017 |
10-Q
| Quarterly Report for the period ended July 31, 2017 |
| 06/14/2017 |
10-Q
| Quarterly Report for the period ended April 30, 2017 |
| 12/15/2016 |
10-Q
| Quarterly Report for the period ended October 31, 2016 |
| 09/14/2016 |
10-Q
| Quarterly Report for the period ended July 31, 2016 |
| 06/14/2016 |
10-Q
| Quarterly Report for the period ended April 30, 2016 |
| 12/15/2015 |
10-Q
| Quarterly Report for the period ended October 31, 2015 |
| 09/15/2015 |
10-Q
| Quarterly Report for the period ended July 31, 2015 |
| 06/15/2015 |
10-Q
| Quarterly Report for the period ended April 30, 2015 |
| 12/15/2014 |
10-Q
| Quarterly Report for the period ended October 31, 2014 |
| 09/15/2014 |
10-Q
| Quarterly Report for the period ended July 31, 2014 |
| 06/16/2014 |
10-Q
| Quarterly Report for the period ended April 30, 2014 |
| 12/13/2013 |
10-Q
| Quarterly Report for the period ended October 31, 2013 |
| 09/16/2013 |
10-Q
| Quarterly Report for the period ended July 31, 2013 |
| 06/14/2013 |
10-Q
| Quarterly Report for the period ended April 30, 2013 |
| 12/14/2012 |
10-Q
| Quarterly Report for the period ended October 31, 2012 |
| 09/14/2012 |
10-Q
| Quarterly Report for the period ended July 31, 2012 |
| 06/14/2012 |
10-Q
| Quarterly Report for the period ended April 30, 2012 |
| 12/15/2011 |
10-Q
| Quarterly Report for the period ended October 31, 2011 |
| 09/14/2011 |
10-Q
| Quarterly Report for the period ended July 31, 2011 |
| 06/14/2011 |
10-Q
| Quarterly Report for the period ended April 30, 2011 |
| 12/15/2010 |
10-Q
| Quarterly Report for the period ended October 31, 2010 |
| 09/07/2010 |
10-Q
| Quarterly Report for the period ended July 31, 2010 |
| 06/14/2010 |
10-Q
| Quarterly Report for the period ended April 30, 2010 |
| 12/11/2009 |
10-Q
| Quarterly Report for the period ended October 31, 2009 |
| 09/14/2009 |
10-Q
| Quarterly Report for the period ended July 31, 2009 |
| 06/15/2009 |
10-Q
| Quarterly Report for the period ended April 30, 2009 |
| 12/12/2008 |
10-Q
| Quarterly Report for the period ended October 31, 2008 |
| 09/12/2008 |
10-Q
| Quarterly Report for the period ended July 31, 2008 |
| 06/13/2008 |
10-Q
| Quarterly Report for the period ended April 30, 2008 |
| 12/13/2007 |
10-Q
| Quarterly Report for the period ended October 31, 2007 |
| 09/13/2007 |
10-Q
| Quarterly Report for the period ended July 31, 2007 |
| 06/14/2007 |
10-Q
| Quarterly Report for the period ended April 30, 2007 |
| 12/20/2006 |
10-Q
| Quarterly Report for the period ended October 31, 2006 |
|