| Date Filed | Type | Description |
| 02/29/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/02/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/03/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/26/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/26/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/27/2009 |
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 |
| 02/27/2008 |
AR
| 2007 Annual Report / 10K |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/28/2007 |
AR
| 2006 Annual Report |
| 03/08/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/08/2006 |
AR
| 2005 Annual Report |
| 03/09/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/09/2005 |
AR
| 2004 Annual Report |
| 03/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/12/2004 |
AR
| 2003 Annual Report |
| 03/14/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/19/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/20/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/20/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/23/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/23/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/06/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/26/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |