| Date Filed | Type | Description |
| 02/28/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 02/22/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/09/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/11/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/12/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/21/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/15/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 05/13/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/29/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/30/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/11/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/14/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/14/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 04/29/2005 |
10-K/A
| Annual Report for the period ended December 31, 2004 [amend] |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 07/14/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 02/25/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/14/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/02/2001 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/08/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |