| Date Filed | Type | Description |
| 02/25/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 02/24/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 02/26/2019 |
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 |
| 02/23/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 02/25/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 09/18/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 02/27/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 05/30/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 02/27/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 02/20/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/22/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/23/2011 |
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 |
| 02/25/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/26/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 02/26/2008 |
AR
| 2007 Annual Report |
| 02/28/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |