| Date Filed | Type | Description |
| 06/23/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 03/30/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 03/28/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 03/30/2015 |
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 |
| 03/28/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/30/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 05/16/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 03/19/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/12/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/12/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 09/26/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/30/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/31/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |