| Date Filed | Type | Description |
| 03/26/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/23/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/24/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/24/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/20/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 03/19/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/31/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/26/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/29/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/29/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/30/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/30/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/31/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 05/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/31/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/30/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 07/12/2002 |
10-K
| Annual Report for the period ended May 31, 2002 |
| 01/23/2002 |
10-K/A
| Annual Report for the period ended May 31, 2001 [amend] |
| 08/29/2001 |
10-K
| Annual Report for the period ended May 31, 2001 |
| 08/29/2000 |
10-K
| Annual Report for the period ended May 31, 2000 |
| 08/26/1999 |
10-K
| Annual Report for the period ended May 31, 1999 |
| 08/31/1998 |
10-K
| Annual Report for the period ended May 31, 1998 |
| 08/29/1997 |
10-K
| Annual Report for the period ended May 31, 1997 |
| 09/16/1996 |
10-K/A
| Annual Report for the period ended May 31, 1996 [amend] |