| Date Filed | Type | Description |
| 03/15/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 09/01/2011 |
10-K/A
| Annual Report for the period ended September 1, 2011 [amend] |
| 06/01/2011 |
10-K/A
| Annual Report for the period ended June 1, 2011 [amend] |
| 03/16/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 09/07/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/26/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/11/2009 |
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 |
| 03/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 04/20/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/27/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/16/2006 |
10-K
| Annual Report for the period ended March 16, 2006 |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/12/2004 |
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/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/01/2002 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 02/22/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/30/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 04/08/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/22/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |