| Date Filed | Type | Description |
| 04/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 10/19/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/30/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 04/06/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/02/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/31/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 04/20/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/04/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/02/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 04/20/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 07/20/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 06/16/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 05/25/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 04/21/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 04/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 04/29/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/30/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/01/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 01/15/2002 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 05/22/2001 |
10-K/A
| Annual Report for the period ended March 30, 2001 [amend] |
| 05/21/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 03/30/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |