| Date Filed | Type | Description |
| 04/01/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 02/18/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/30/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 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 |
| 02/11/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/16/2010 |
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 |
| 02/22/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 08/07/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/27/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 02/26/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/28/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/11/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 02/25/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/25/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/25/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/26/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/17/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 09/10/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 08/26/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/25/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/26/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 10/14/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 03/27/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |