| Date Filed | Type | Description |
| 04/26/2021 |
10-K/A
| Annual Report for the period ended December 31, 2020 [amend] |
| 03/16/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/28/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 03/10/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 03/12/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 04/19/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 03/16/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 04/14/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/29/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 03/11/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 05/14/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 03/16/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/10/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/28/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/18/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/08/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/14/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/14/2011 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/11/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 05/05/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/16/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/31/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |