| Date Filed | Type | Description |
| 04/01/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 02/12/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/13/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/14/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/15/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/10/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/11/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/11/2014 |
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 |
| 02/22/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/23/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/24/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/25/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/27/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/22/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/01/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/08/2006 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/15/2004 |
AR
| 2003 Annual Report |
| 03/24/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/24/2003 |
AR
| 2002 Annual Report |
| 06/28/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 03/19/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 06/29/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 03/05/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 06/27/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/28/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 01/21/2000 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 07/01/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/30/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 06/30/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/30/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |