| Date Filed | Type | Description |
| 07/01/2013 |
10-K/A
| Annual Report for the period ended January 31, 2013 [amend] |
| 03/21/2013 |
10-K
| Annual Report for the period ended January 31, 2013 |
| 03/26/2012 |
10-K/A
| Annual Report for the period ended January 31, 2012 [amend] |
| 03/22/2012 |
10-K
| Annual Report for the period ended January 31, 2012 |
| 03/17/2011 |
10-K
| Annual Report for the period ended January 31, 2011 |
| 03/15/2010 |
10-K
| Annual Report for the period ended March 15, 2010 |
| 06/03/2009 |
10-K
| Annual Report for the period ended April 30, 2009 |
| 04/10/2009 |
10-K
| Annual Report for the period ended April 10, 2009 |
| 04/11/2008 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 02/12/2008 |
10-K/A
| Annual Report for the period ended February 12, 2008 [amend] |
| 04/13/2007 |
10-K
| Annual Report for the period ended January 31, 2007 |
| 12/13/2006 |
10-K/A
| Annual Report for the period ended January 31, 2006 [amend] |
| 04/13/2006 |
10-K
| Annual Report for the period ended January 31, 2006 |
| 04/13/2005 |
10-K
| Annual Report for the period ended January 31, 2005 |
| 04/13/2004 |
10-K
| Annual Report for the period ended January 31, 2004 |
| 04/28/2003 |
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 |
| 05/04/2001 |
10-K
| Annual Report for the period ended January 31, 2001 |
| 04/27/2000 |
10-K
| Annual Report for the period ended January 31, 2000 |
| 04/23/1999 |
10-K
| Annual Report for the period ended January 31, 1999 |
| 04/24/1998 |
10-K
| Annual Report for the period ended January 31, 1998 |
| 04/25/1997 |
10-K
| Annual Report for the period ended January 31, 1997 |
| 04/25/1996 |
10-K
| Annual Report for the period ended January 31, 1996 |