| Date Filed | Type | Description |
| 04/30/2021 |
10-K/A
| Annual Report for the period ended December 31, 2020 [amend] |
| 03/05/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/28/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 03/06/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/19/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/16/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/17/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/17/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/17/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/13/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/13/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/21/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/17/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/16/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/26/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/27/2008 |
10-KT
| Form 10-KT - Transition reports [Rule 13a-10 or 15d-10] |
| 05/17/2007 |
10-K
| Annual Report for the period ended March 31, 2007 |
| 05/25/2006 |
10-K
| Annual Report for the period ended March 31, 2006 |
| 06/02/2005 |
10-K
| Annual Report for the period ended March 31, 2005 |
| 06/28/2004 |
10-K
| Annual Report for the period ended March 31, 2004 |
| 06/22/2004 |
10-K/A
| Annual Report for the period ended March 31, 2003 [amend] |
| 06/03/2003 |
10-K
| Annual Report for the period ended March 31, 2003 |
| 06/13/2002 |
10-K
| Annual Report for the period ended March 31, 2002 |
| 06/22/2001 |
10-K
| Annual Report for the period ended March 31, 2001 |
| 06/28/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/25/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/26/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/27/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/28/1996 |
10-K
| Annual Report for the period ended March 31, 1996 |