| Date Filed | Type | Description |
| 08/03/2023 |
10-K
| Annual Report for the period ended May 31, 2023 |
| 07/22/2022 |
10-K
| Annual Report for the period ended May 31, 2022 |
| 07/27/2021 |
10-K
| Annual Report for the period ended May 31, 2021 |
| 08/10/2020 |
10-K
| Annual Report for the period ended May 31, 2020 |
| 07/25/2019 |
10-K
| Annual Report for the period ended May 31, 2019 |
| 07/23/2018 |
10-K
| Annual Report for the period ended May 31, 2018 |
| 08/04/2017 |
10-K
| Annual Report for the period ended May 31, 2017 |
| 07/25/2017 |
10-K/A
| Annual Report for the period ended May 31, 2016 [amend] |
| 08/01/2016 |
10-K
| Annual Report for the period ended May 31, 2016 |
| 08/10/2015 |
10-K
| Annual Report for the period ended May 31, 2015 |
| 01/09/2015 |
10-K/A
| Annual Report for the period ended May 31, 2014 [amend] |
| 01/07/2015 |
10-K/A
| Annual Report for the period ended May 31, 2014 [amend] |
| 08/14/2014 |
10-K
| Annual Report for the period ended May 31, 2014 |
| 08/14/2013 |
10-K
| Annual Report for the period ended May 31, 2013 |
| 08/14/2012 |
10-K
| Annual Report for the period ended May 31, 2012 |
| 08/12/2011 |
10-K
| Annual Report for the period ended May 31, 2011 |
| 08/06/2010 |
10-K
| Annual Report for the period ended May 31, 2010 |
| 08/14/2009 |
10-K
| Annual Report for the period ended May 31, 2009 |
| 08/14/2008 |
10-K
| Annual Report for the period ended May 31, 2008 |
| 08/14/2007 |
10-K
| Annual Report for the period ended August 14, 2007 |
| 09/21/2006 |
10-K/A
| Annual Report for the period ended June 3, 2006 [amend] |
| 08/11/2006 |
10-K
| Annual Report for the period ended June 3, 2006 |
| 08/26/2005 |
10-K
| Annual Report for the period ended May 28, 2005 |
| 08/27/2004 |
10-K
| Annual Report for the period ended May 29, 2004 |