| Date Filed | Type | Description |
| 04/28/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 03/11/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 04/29/2019 |
10-K/A
| Annual Report for the period ended December 31, 2018 [amend] |
| 03/14/2019 |
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] |
| 03/28/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 05/01/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 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 |
| 03/31/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 03/31/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/29/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/29/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/14/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/31/2009 |
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 |
| 01/03/2008 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 04/02/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |