| Date Filed | Type | Description |
| 04/30/2013 |
10-K/A
| Annual Report for the period ended December 31, 2012 [amend] |
| 03/15/2013 |
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] |
| 03/15/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 04/29/2011 |
10-K/A
| Annual Report for the period ended April 29, 2011 [amend] |
| 03/16/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 04/29/2010 |
10-K/A
| Annual Report for the period ended April 29, 2010 [amend] |
| 03/16/2010 |
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] |
| 03/16/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/24/2008 |
10-K/A
| Annual Report for the period ended December 31, 2007 [amend] |
| 03/14/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/21/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/15/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/21/2006 |
10-K
| Annual Report for the period ended December 30, 2005 |
| 03/29/2005 |
10-K
| Annual Report for the period ended March 21, 2004 |
| 03/30/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 04/15/2003 |
10-K
| Annual Report for the period ended December 31, 2002 |
| 04/01/2002 |
10-K
| Annual Report for the period ended December 31, 2001 |
| 04/02/2001 |
10-K
| Annual Report for the period ended December 31, 2000 |
| 03/30/2000 |
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 |