| Date Filed | Type | Description |
| 03/23/2023 |
10-K
| Annual Report for the period ended January 31, 2023 |
| 03/24/2022 |
10-K
| Annual Report for the period ended January 31, 2022 |
| 03/25/2021 |
10-K
| Annual Report for the period ended January 31, 2021 |
| 03/26/2020 |
10-K
| Annual Report for the period ended January 31, 2020 |
| 03/28/2019 |
10-K
| Annual Report for the period ended January 31, 2019 |
| 03/29/2018 |
10-K
| Annual Report for the period ended January 31, 2018 |
| 03/20/2017 |
10-K
| Annual Report for the period ended January 31, 2017 |
| 03/31/2016 |
10-K
| Annual Report for the period ended January 31, 2016 |
| 03/31/2015 |
10-K
| Annual Report for the period ended January 31, 2015 |
| 03/28/2014 |
10-K
| Annual Report for the period ended January 31, 2014 |
| 03/26/2013 |
10-K
| Annual Report for the period ended January 31, 2013 |
| 03/30/2012 |
10-K
| Annual Report for the period ended January 31, 2012 |
| 04/27/2011 |
10-K/A
| Annual Report for the period ended January 31, 2011 [amend] |
| 04/07/2011 |
10-K
| Annual Report for the period ended January 31, 2011 |
| 04/01/2010 |
10-K
| Annual Report for the period ended January 31, 2010 |
| 04/09/2009 |
10-K
| Annual Report for the period ended January 31, 2009 |
| 03/27/2008 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 03/30/2007 |
10-K
| Annual Report for the period ended January 31, 2007 |
| 05/03/2006 |
10-K/A
| Annual Report for the period ended January 31, 2006 [amend] |
| 04/12/2006 |
10-K
| Annual Report for the period ended January 31, 2006 |
| 04/18/2005 |
10-K
| Annual Report for the period ended January 31, 2005 |
| 04/15/2004 |
10-K
| Annual Report for the period ended January 31, 2004 |
| 04/30/2003 |
10-K
| Annual Report for the period ended January 31, 2003 |
| 04/30/2002 |
10-K
| Annual Report for the period ended January 31, 2002 |
| 04/30/2001 |
10-K
| Annual Report for the period ended January 31, 2001 |
| 04/19/2000 |
10-K
| Annual Report for the period ended January 31, 2000 |
| 04/30/1999 |
10-K
| Annual Report for the period ended January 31, 1999 |
| 04/23/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 04/18/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |