| Date Filed | Type | Description |
| 07/27/2023 |
10-K
| Annual Report for the period ended May 31, 2023 |
| 07/27/2022 |
10-K
| Annual Report for the period ended May 31, 2022 |
| 07/28/2021 |
10-K
| Annual Report for the period ended May 31, 2021 |
| 07/29/2020 |
10-K
| Annual Report for the period ended May 31, 2020 |
| 07/26/2019 |
10-K
| Annual Report for the period ended May 31, 2019 |
| 07/27/2018 |
10-K
| Annual Report for the period ended May 31, 2018 |
| 07/31/2017 |
10-K
| Annual Report for the period ended May 31, 2017 |
| 07/29/2016 |
10-K
| Annual Report for the period ended May 31, 2016 |
| 07/30/2015 |
10-K
| Annual Report for the period ended May 31, 2015 |
| 07/30/2014 |
10-K
| Annual Report for the period ended May 31, 2014 |
| 07/30/2013 |
10-K
| Annual Report for the period ended May 31, 2013 |
| 07/30/2012 |
10-K
| Annual Report for the period ended May 31, 2012 |
| 07/29/2011 |
10-K
| Annual Report for the period ended May 31, 2011 |
| 05/18/2011 |
10-K/A
| Annual Report for the period ended May 31, 2010 [amend] |
| 07/30/2010 |
10-K
| Annual Report for the period ended May 31, 2010 |
| 07/30/2009 |
10-K
| Annual Report for the period ended May 31, 2009 |
| 07/30/2008 |
10-K
| Annual Report for the period ended May 31, 2008 |
| 07/30/2007 |
10-K
| Annual Report for the period ended May 31, 2007 |
| 08/11/2006 |
10-K
| Annual Report for the period ended May 31, 2006 |
| 08/15/2005 |
10-K
| Annual Report for the period ended May 31, 2005 |
| 08/16/2004 |
10-K
| Annual Report for the period ended May 31, 2004 |
| 08/29/2003 |
10-K
| Annual Report for the period ended May 31, 2003 |
| 08/26/2002 |
10-K
| Annual Report for the period ended May 31, 2002 |
| 08/29/2001 |
10-K
| Annual Report for the period ended May 31, 2001 |
| 08/28/2000 |
10-K
| Annual Report for the period ended May 31, 2000 |
| 08/27/1999 |
10-K
| Annual Report for the period ended May 31, 1999 |
| 08/28/1998 |
10-K
| Annual Report for the period ended May 31, 1998 |
| 08/27/1997 |
10-K
| Annual Report for the period ended May 31, 1997 |
| 05/01/1997 |
10-K/A
| Annual Report for the period ended May 31, 1996 [amend] |
| 08/28/1996 |
10-K
| Annual Report for the period ended May 31, 1996 |
| 09/06/1995 |
10-K/A
| Annual Report for the period ended May 31, 1995 [amend] |
| 08/29/1995 |
10-K
| Annual Report for the period ended May 31, 1995 |
| 08/29/1994 |
10-K
| Annual Report for the period ended May 31, 1994 |