| Date Filed | Type | Description |
| 03/16/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/08/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 06/22/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 06/15/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/10/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/11/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/17/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/25/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/29/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 10/17/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 07/29/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 06/19/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 11/19/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 11/19/2002 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/15/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/26/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/03/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/06/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |