| Date Filed | Type | Description |
| 04/30/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 02/27/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/01/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/02/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/28/2007 |
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 |
| 12/19/2005 |
10-K
| Annual Report for the period ended December 19, 2005 |
| 06/16/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 05/06/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 04/08/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/28/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 09/30/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 06/25/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 04/30/2003 |
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 |
| 03/15/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/22/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 02/22/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/10/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |