| Date Filed | Type | Description |
| 05/24/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/15/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/15/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/29/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 04/03/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/27/2008 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/11/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 05/19/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 01/24/2006 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 06/03/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 04/29/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 04/27/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/30/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 04/01/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 05/22/2002 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 05/02/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/30/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/15/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 11/29/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 08/31/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 04/30/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 04/17/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 04/28/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 04/17/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 04/30/1999 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 04/30/1999 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 04/30/1999 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/31/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |