| Date Filed | Type | Description |
| 03/30/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/30/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/31/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/26/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/31/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/25/2010 |
10-K
| Annual Report for the period ended March 25, 2010 |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 06/16/2008 |
10-K/A
| Annual Report for the period ended June 16, 2008 [amend] |
| 03/14/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 08/17/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/16/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 10/18/2006 |
10-K/A
| Annual Report for the period ended October 18, 2006 [amend] |
| 10/18/2006 |
10-K/A
| Annual Report for the period ended October 18, 2006 [amend] |
| 03/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/29/2006 |
10-K/A
| Annual Report for the period ended March 29, 2006 [amend] |
| 04/14/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 05/05/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/29/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/15/2003 |
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-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/22/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/18/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/25/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/27/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 04/01/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |
| 03/30/1995 |
10-K
| Annual Report for the period ended December 31, 1994 |
| 06/28/1994 |
10-K/A
| Annual Report for the period ended March 31, 1993 [amend] |
| 03/30/1994 |
10-K
| Annual Report for the period ended December 31, 1993 |