| Date Filed | Type | Description |
| 03/29/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/30/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/30/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/23/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/13/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/13/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 10/29/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/08/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 08/03/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/10/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/10/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/10/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/20/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/14/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/20/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/28/2005 |
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 |
| 02/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/12/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/16/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/22/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/19/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/25/1998 |
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 |
| 03/28/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |