| Date Filed | Type | Description |
| 02/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 12/05/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 02/22/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/23/2010 |
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] |
| 04/02/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 02/25/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/27/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 06/01/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/27/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 04/28/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/13/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/31/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 04/20/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/26/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/28/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/28/2003 |
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 |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 04/28/2000 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/30/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |