| Date Filed | Type | Description |
| 03/23/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/31/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 10/01/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 02/26/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/22/2013 |
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 |
| 02/23/2011 |
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 |
| 03/02/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/28/2007 |
AR
| 2006 Annual Report |
| 03/16/2006 |
AR
| 2005 Annual Report |
| 03/15/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2005 |
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 |
| 03/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/21/2003 |
AR
| 2002 Annual Report |
| 03/25/2002 |
AR
| 2001 Annual Report |
| 03/25/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/02/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 03/14/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/14/2001 |
AR
| 2000 Annual Report |
| 11/03/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/24/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/24/2000 |
AR
| 1999 Annual Report |
| 03/25/1999 |
AR
| 1998 Annual Report |
| 03/25/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 06/05/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 04/30/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/31/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
|