| Date Filed | Type | Description |
| 05/17/2018 |
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] |
| 04/14/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 04/14/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 09/07/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 08/25/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 04/12/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 05/11/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 05/08/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 04/14/2014 |
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 |
| 04/16/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 04/14/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 05/17/2010 |
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 |
| 07/21/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/30/2002 |
10-K/A
| Annual Report for the period ended December 31, 2001 [amend] |
| 04/16/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 07/11/2001 |
10-K/A
| Annual Report for the period ended December 31, 2000 [amend] |
| 03/29/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/31/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 03/31/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 03/31/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 03/31/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 03/29/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |