| Date Filed | Type | Description |
| 04/15/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/16/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 08/13/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 04/17/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/31/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/30/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/27/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/14/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/15/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 08/09/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 06/01/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 04/30/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/20/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/19/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 10/07/2011 |
10-K/A
| Annual Report for the period ended December 30, 2010 [amend] |
| 04/15/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 12/17/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 02/05/2010 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 10/09/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 10/01/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 07/28/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 07/15/2009 |
10-K
| Annual Report for the period ended December 31, 2007 |