| Date Filed | Type | Description |
| 04/27/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/23/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/03/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 09/01/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/01/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/30/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/03/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 08/25/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 02/27/2008 |
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 |
| 03/09/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/09/2006 |
AR
| 2005 Annual Report |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/16/2005 |
AR
| 2004 Annual Report |
| 03/30/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/05/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/05/2004 |
AR
| 2003 Annual Report |
| 01/12/2004 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/27/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/14/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/07/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/07/2001 |
AR
| 2000 Annual Report |