| Date Filed | Type | Description |
| 04/30/2021 |
10-K/A
| Annual Report for the period ended December 31, 2020 [amend] |
| 03/01/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/27/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 03/12/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 04/26/2019 |
10-K/A
| Annual Report for the period ended April 26, 2019 [amend] |
| 03/07/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 03/07/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 04/01/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 03/28/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 04/29/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/31/2011 |
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] |
| 03/31/2010 |
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 |
| 03/03/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 03/03/2008 |
AR
| 2007 Annual Report |
| 07/03/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/16/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/16/2007 |
AR
| 2006 Annual Report |
| 04/07/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 04/06/2006 |
10-K/A
| Annual Report for the period ended December 31, 2005 [amend] |
| 03/16/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/16/2006 |
AR
| 2005 Annual Report |
| 03/16/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
| 03/16/2005 |
AR
| 2004 Annual Report |
| 03/29/2004 |
10-K
| Annual Report for the period ended December 31, 2003 |
| 03/29/2004 |
AR
| 2003 Annual Report |
| 03/31/2003 |
10-KT
| Form 10-KT - Transition reports [Rule 13a-10 or 15d-10] |
| 02/28/2003 |
10-K/A
| Annual Report for the period ended March 31, 2002 [amend] |
| 07/01/2002 |
10-K
| Annual Report for the period ended March 31, 2002 |
| 07/02/2001 |
10-K
| Annual Report for the period ended April 1, 2001 |
| 07/03/2000 |
10-K
| Annual Report for the period ended April 2, 2000 |
| 06/28/1999 |
10-K
| Annual Report for the period ended March 28, 1999 |
|