| Date Filed | Type | Description |
| 03/20/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 05/03/2010 |
10-K
| Annual Report for the period ended January 31, 2010 |
| 05/01/2009 |
10-K
| Annual Report for the period ended January 31, 2009 |
| 04/29/2008 |
10-K
| Annual Report for the period ended January 31, 2008 |
| 04/27/2007 |
10-K
| Annual Report for the period ended January 31, 2007 |
| 05/31/2006 |
10-K/A
| Annual Report for the period ended January 31, 2006 [amend] |
| 05/01/2006 |
10-K
| Annual Report for the period ended January 31, 2006 |
| 05/31/2005 |
10-K/A
| Annual Report for the period ended January 31, 2005 [amend] |
| 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 |
| 11/12/2002 |
10-K/A
| Annual Report for the period ended January 31, 2002 [amend] |
| 04/30/2002 |
10-K
| Annual Report for the period ended January 31, 2002 |
| 04/23/2001 |
10-K
| Annual Report for the period ended January 31, 2001 |
| 03/20/2000 |
10-K
| Annual Report for the period ended January 31, 2000 |
| 07/27/1999 |
10-K/A
| Annual Report for the period ended January 31, 1999 [amend] |
| 03/25/1999 |
10-K
| Annual Report for the period ended January 31, 1999 |
| 05/01/1998 |
10-K
| Annual Report for the period ended January 31, 1998 |
| 01/30/1998 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 06/16/1997 |
10-K/A
| Annual Report for the period ended January 31, 1997 [amend] |
| 04/17/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |