| Date Filed | Type | Description |
| 03/25/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/27/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 03/15/2017 |
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 |
| 05/06/2015 |
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 |
| 03/17/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 03/22/2013 |
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 |
| 03/14/2013 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 03/30/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 05/20/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/31/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 01/26/2011 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 01/14/2011 |
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 |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/04/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |