| Date Filed | Type | Description |
| 03/11/2011 |
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 |
| 03/13/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/17/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 04/23/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/30/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/07/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 05/10/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 02/10/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/11/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/25/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/14/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 02/28/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 05/19/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 05/01/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 04/30/1999 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 04/19/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 04/15/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 05/22/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 04/30/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/31/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |