| Date Filed | Type | Description |
| 03/11/2022 |
10-K
| Annual Report for the period ended January 31, 2022 |
| 02/24/2022 |
10-K
| Annual Report for the period ended January 31, 2021 |
| 03/17/2021 |
10-K
| Annual Report for the period ended January 31, 2021 |
| 03/05/2020 |
10-K
| Annual Report for the period ended January 31, 2020 |
| 03/08/2019 |
10-K
| Annual Report for the period ended January 31, 2019 |
| 03/09/2018 |
10-K
| Annual Report for the period ended January 31, 2018 |
| 03/06/2017 |
10-K
| Annual Report for the period ended January 31, 2017 |
| 03/04/2016 |
10-K
| Annual Report for the period ended January 31, 2016 |
| 03/05/2015 |
10-K
| Annual Report for the period ended January 31, 2015 |
| 03/05/2014 |
10-K
| Annual Report for the period ended January 31, 2014 |
| 03/08/2013 |
10-K
| Annual Report for the period ended January 31, 2013 |
| 03/09/2012 |
10-K
| Annual Report for the period ended January 31, 2012 |
| 06/24/2011 |
10-K/A
| Annual Report for the period ended January 31, 2011 [amend] |
| 03/23/2011 |
10-K
| Annual Report for the period ended January 31, 2011 |
| 03/11/2010 |
10-K
| Annual Report for the period ended January 31, 2010 |
| 03/09/2009 |
10-K
| Annual Report for the period ended January 31, 2009 |
| 02/29/2008 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 03/09/2007 |
10-K
| Annual Report for the period ended January 31, 2007 |
| 03/15/2006 |
10-K
| Annual Report for the period ended January 31, 2006 |
| 03/25/2005 |
10-K
| Annual Report for the period ended January 31, 2005 |