| Date Filed | Type | Description |
| 03/01/2019 |
10-K/A
| Annual Report for the period ended December 31, 2018 [amend] |
| 02/25/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/06/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 02/09/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/11/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/20/2015 |
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 |
| 02/15/2013 |
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 |
| 03/01/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/18/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/17/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/20/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/27/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/15/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/21/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/18/2005 |
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 |
| 03/16/2005 |
AR
| 2004 Annual Report |
| 03/15/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/15/2004 |
AR
| 2003 Annual Report |
| 04/18/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/31/2003 |
AR
| 2002 Annual Report |
| 03/29/2002 |
AR
| 2001 Annual Report |
| 03/29/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/21/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/21/2001 |
AR
| 2000 Annual Report |
| 03/30/2000 |
AR
| 1999 Annual Report |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 05/05/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 04/05/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/31/1999 |
AR
| 1998 Annual Report |
|