| Date Filed | Type | Description |
| 08/29/2016 |
10-K
| Annual Report for the period ended May 31, 2016 |
| 08/31/2015 |
10-K
| Annual Report for the period ended May 31, 2015 |
| 10/07/2014 |
10-K
| Annual Report for the period ended May 31, 2014 |
| 08/28/2013 |
10-K
| Annual Report for the period ended May 31, 2013 |
| 10/09/2012 |
10-K/A
| Annual Report for the period ended May 31, 2012 [amend] |
| 08/29/2012 |
10-K
| Annual Report for the period ended May 31, 2012 |
| 08/06/2009 |
10-K
| Annual Report for the period ended May 31, 2009 |
| 09/10/2008 |
10-K/A
| Annual Report for the period ended May 31, 2008 [amend] |
| 08/27/2008 |
10-K
| Annual Report for the period ended May 31, 2008 |
| 08/29/2003 |
10-K
| Annual Report for the period ended May 31, 2003 |
| 09/13/2001 |
10-K
| Annual Report for the period ended May 31, 2001 |
| 09/13/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 09/29/1999 |
10-K/A
| Annual Report for the period ended May 31, 1999 [amend] |
| 09/02/1999 |
10-K/A
| Annual Report for the period ended May 31, 1999 [amend] |
| 08/30/1999 |
10-K
| Annual Report for the period ended May 31, 1999 |
| 09/30/1998 |
10-K/A
| Annual Report for the period ended May 31, 1998 [amend] |
| 08/31/1998 |
10-K
| Annual Report for the period ended May 31, 1998 |
| 09/29/1997 |
10-K/A
| Annual Report for the period ended May 31, 1997 [amend] |
| 08/29/1997 |
10-K
| Annual Report for the period ended May 31, 1997 |
| 09/30/1996 |
10-K/A
| Annual Report for the period ended May 31, 1996 [amend] |
| 08/29/1996 |
10-K
| Annual Report for the period ended May 31, 1996 |
| 08/29/1995 |
10-K
| Annual Report for the period ended May 31, 1995 |