| Date Filed | Type | Description |
| 03/10/2023 |
10-K
| Annual Report for the period ended December 31, 2022 |
| 03/11/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 03/05/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/28/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 03/01/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 04/30/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 03/07/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/03/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/04/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/06/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 08/28/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 03/07/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/29/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/08/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/02/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/04/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/16/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/29/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/19/2009 |
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] |
| 04/03/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/31/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/27/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/27/2007 |
AR
| SFE Annual Report 2006 |
| 03/13/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/13/2006 |
AR
| SFE Annual Report 2005 |
| 03/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2005 |
AR
| SFE Annual Report 2004 |
| 04/14/2004 |
10-K/A
| Annual Report for the period ended December 31, 2003 [amend] |
| 03/15/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/15/2004 |
AR
| SFE Annual Report 2003 |
| 04/24/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/31/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
|