| Date Filed | Type | Description |
| 03/01/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 03/01/2021 |
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 |
| 03/20/2019 |
10-K/A
| Annual Report for the period ended December 31, 2018 [amend] |
| 03/18/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/01/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/06/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/26/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/26/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/27/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/28/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 02/25/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/27/2009 |
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 |
| 02/28/2008 |
AR
| 2007 Annual Report to Stockholders |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 11/20/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/15/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |