| Date Filed | Type | Description |
| 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 |
| 03/30/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 03/21/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/26/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/08/2009 |
10-K/A
| Annual Report for the period ended December 31, 2008 [amend] |
| 03/31/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 03/13/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/09/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 05/03/2006 |
10-K/A
| Annual Report for the period ended May 3, 2006 [amend] |
| 04/28/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/14/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/25/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/15/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/29/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/17/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/21/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 03/23/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/20/2000 |
10-K
| Annual Report for the period ended December 31, 1999 |
| 11/05/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 11/02/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 04/30/1999 |
10-K/A
| Annual Report for the period ended December 31, 1998 [amend] |
| 03/08/1999 |
10-K
| Annual Report for the period ended December 31, 1998 |
| 04/08/1998 |
10-K/A
| Annual Report for the period ended December 31, 1997 [amend] |
| 03/30/1998 |
10-K
| Annual Report for the period ended December 31, 1997 |
| 05/09/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 03/10/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |