| Date Filed | Type | Description |
| 04/30/2019 |
10-K/A
| Annual Report for the period ended December 31, 2018 [amend] |
| 04/01/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 04/18/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 02/27/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 04/28/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 03/23/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/20/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 03/15/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 02/19/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 02/27/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 11/05/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 02/21/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 02/23/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 02/28/2011 |
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 |
| 02/26/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/29/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/30/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 05/31/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |