| Date Filed | Type | Description |
| 04/28/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 02/04/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/05/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/06/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/25/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 02/08/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/09/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/09/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/23/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/27/2009 |
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 |
| 02/28/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/09/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/24/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/28/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 02/17/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/28/2002 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/30/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/30/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/31/1999 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 03/31/1998 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |