| Date Filed | Type | Description |
| 04/30/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 03/31/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 04/30/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 03/31/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/30/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 04/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 04/30/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 04/27/2012 |
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 |
| 04/28/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/30/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/30/2010 |
10-K/A
| Annual Report for the period ended December 31, 2009 [amend] |
| 03/18/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/30/2009 |
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 |
| 02/12/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/23/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 02/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 02/16/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 02/15/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 02/12/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/30/2003 |
10-K/A
| Annual Report for the period ended December 31, 2002 [amend] |
| 03/31/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 03/28/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/16/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 11/14/2000 |
10-K405/A
| Form 10-K405/A - Annual report [Sections 13 and 15(d), S-K Item 405] [Amend] |
| 03/30/2000 |
10-K405
| Form 10-K405 - Annual report [Sections 13 and 15(d), S-K Item 405] |
| 09/09/1997 |
10-K/A
| Annual Report for the period ended December 31, 1996 [amend] |
| 04/16/1997 |
10-K
| Annual Report for the period ended December 31, 1996 |
| 09/27/1996 |
10-K/A
| Annual Report for the period ended December 31, 1995 [amend] |
| 09/26/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |