| Date Filed | Type | Description |
| 05/03/2021 |
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] |
| 04/13/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 04/01/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/19/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/15/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/15/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/16/2015 |
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 |
| 04/30/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/28/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/25/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/14/2011 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 12/22/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 04/15/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 04/12/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 04/14/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/10/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/15/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/28/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 09/01/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 04/14/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 04/12/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 08/24/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 04/10/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/29/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |