| Date Filed | Type | Description |
| 04/29/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/21/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/12/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 08/21/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 05/02/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/31/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/17/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/10/2004 |
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 |
| 04/16/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 07/13/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 06/13/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 04/27/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 04/17/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/29/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/03/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/25/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |