| Date Filed | Type | Description |
| 04/01/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 05/21/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 04/02/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/31/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/07/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/16/2015 |
10-K
| Annual Report for the period ended March 16, 2015 |
| 03/17/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 05/10/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/18/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 04/02/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/30/2012 |
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 |
| 04/07/2010 |
10-K/A
| Annual Report for the period ended April 7, 2010 [amend] |
| 03/23/2010 |
10-K
| Annual Report for the period ended February 26, 2010 |
| 03/20/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 05/08/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/17/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/16/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/16/2007 |
AR
| 2006 Annual Report |
| 03/16/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2004 |
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] |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/03/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 05/26/2000 |
10-K/A
| Annual Report for the period ended December 31, 1999 [amend] |
| 04/14/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 04/16/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 05/01/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 04/16/1998 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 04/15/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 02/24/1998 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 10/17/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |