| Date Filed | Type | Description |
| 05/02/2011 |
10-K
| Annual Report for the period ended January 31, 2011 |
| 04/20/2010 |
10-K
| Annual Report for the period ended January 31, 2010 |
| 04/16/2009 |
10-K
| Annual Report for the period ended January 31, 2009 |
| 04/10/2008 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 04/16/2007 |
10-K
| Annual Report for the period ended January 31, 2007 |
| 05/02/2006 |
10-K/A
| Annual Report for the period ended January 31, 2006 [amend] |
| 04/10/2006 |
10-K
| Annual Report for the period ended January 31, 2006 |
| 05/03/2005 |
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 |
| 04/18/2003 |
10-K
| Annual Report for the period ended January 31, 2003 |
| 04/19/2002 |
10-K
| Annual Report for the period ended January 31, 2002 |
| 04/26/2001 |
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 |
| 04/30/1999 |
10-K
| Annual Report for the period ended January 31, 1999 |
| 06/16/1998 |
10-K/A
| Annual Report for the period ended January 31, 1998 [amend] |
| 04/29/1998 |
10-K
| Annual Report for the period ended January 31, 1998 |
| 05/02/1997 |
10-K/A
| Annual Report for the period ended January 31, 1997 [amend] |
| 05/01/1997 |
10-K
| Annual Report for the period ended January 31, 1997 |
| 05/30/1996 |
10-K/A
| Annual Report for the period ended January 31, 1996 [amend] |
| 04/30/1996 |
10-K
| Annual Report for the period ended January 31, 1996 |