| Date Filed | Type | Description |
| 03/08/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 09/28/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/28/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/14/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/15/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/16/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 11/23/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/11/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/12/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/12/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/28/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/10/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/28/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/10/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 02/28/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/30/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/19/1998 |
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 |
| 03/20/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 04/12/1995 |
10-K
| Annual Report for the period ended December 31, 1994 |