| Date Filed | Type | Description |
| 04/19/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 03/01/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/22/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 02/26/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 04/24/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 02/27/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 04/24/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 02/28/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/19/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 04/27/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 02/29/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 04/29/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/01/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/29/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/01/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/30/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 02/26/2009 |
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] |
| 02/29/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 04/30/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/06/2007 |
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 |
| 03/09/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/11/2004 |
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 |
| 03/27/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/26/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/27/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/27/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/28/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |