| Date Filed | Type | Description |
| 06/03/2020 |
10-K
| Annual Report for the period ended March 31, 2020 |
| 06/04/2019 |
10-K
| Annual Report for the period ended March 31, 2019 |
| 06/11/2018 |
10-K
| Annual Report for the period ended March 31, 2018 |
| 05/25/2017 |
10-K
| Annual Report for the period ended March 31, 2017 |
| 05/25/2016 |
10-K
| Annual Report for the period ended March 31, 2016 |
| 05/22/2015 |
10-K
| Annual Report for the period ended March 31, 2015 |
| 05/22/2014 |
10-K
| Annual Report for the period ended March 31, 2014 |
| 05/21/2013 |
10-K
| Annual Report for the period ended March 31, 2013 |
| 03/04/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/28/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/28/2006 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/11/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/13/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/12/2002 |
10-K
| Annual Report for the period ended December 21, 2001 |
| 03/07/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/13/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/10/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/26/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/20/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/20/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 05/10/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/22/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/16/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 04/01/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 03/24/1995 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/17/1995 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/13/1995 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/29/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |