| Date Filed | Type | Description |
| 05/02/2022 |
10-K/A
| Annual Report for the period ended December 31, 2021 [amend] |
| 02/25/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 04/06/2021 |
10-K/A
| Annual Report for the period ended December 31, 2020 [amend] |
| 03/15/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/30/2020 |
10-K/A
| Annual Report for the period ended December 31, 2019 [amend] |
| 03/30/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 04/30/2019 |
10-K/A
| Annual Report for the period ended April 30, 2019 [amend] |
| 03/08/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 04/27/2018 |
10-K/A
| Annual Report for the period ended December 31, 2017 [amend] |
| 02/27/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 04/28/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 02/27/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/29/2016 |
10-K/A
| Annual Report for the period ended December 31, 2015 [amend] |
| 02/29/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 04/30/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 03/02/2015 |
10-K/A
| Annual Report for the period ended December 31, 2014 [amend] |
| 02/25/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 04/29/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 03/06/2014 |
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] |
| 03/18/2013 |
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] |
| 02/29/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 05/02/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 03/16/2011 |
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] |
| 03/10/2010 |
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] |
| 03/02/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 02/29/2008 |
10-K
| Annual Report for the period ended December 31, 2007 |
| 05/31/2007 |
10-K/A
| Annual Report for the period ended December 31, 2006 [amend] |
| 03/01/2007 |
10-K
| Annual Report for the period ended December 31, 2006 |
| 03/16/2006 |
10-K
| Annual Report for the period ended December 31, 2005 |
| 03/10/2005 |
10-K
| Annual Report for the period ended December 31, 2004 |
|