| Date Filed | Type | Description |
| 02/18/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/20/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/19/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/26/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/12/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/25/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/04/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/05/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 05/30/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/06/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/08/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/28/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/14/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/10/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/27/2003 |
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 |
| 03/23/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 09/24/1999 |
10-K
| Annual Report for the period ended June 30, 1999 |
| 09/24/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 09/19/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 09/27/1996 |
10-K
| Annual Report for the period ended June 30, 1996 |