| Date Filed | Type | Description |
| 03/15/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/16/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/13/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 08/15/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 03/10/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/10/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/18/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/21/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/19/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/18/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/30/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/24/2010 |
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] |
| 03/13/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/28/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/17/2008 |
10-K
| Annual Report for the period ended March 12, 2008 |
| 03/14/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/30/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 05/22/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/01/2002 |
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 |
| 03/23/2000 |
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 |
| 03/26/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 04/01/1997 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/31/1997 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |