| Date Filed | Type | Description |
| 04/15/2022 |
10-K
| Annual Report for the period ended December 31, 2021 |
| 04/15/2021 |
10-K
| Annual Report for the period ended December 31, 2020 |
| 04/14/2020 |
10-K
| Annual Report for the period ended December 31, 2019 |
| 04/16/2019 |
10-K
| Annual Report for the period ended December 31, 2018 |
| 04/17/2018 |
10-K
| Annual Report for the period ended December 31, 2017 |
| 10/05/2017 |
10-K/A
| Annual Report for the period ended December 31, 2016 [amend] |
| 04/17/2017 |
10-K
| Annual Report for the period ended December 31, 2016 |
| 04/13/2016 |
10-K
| Annual Report for the period ended December 31, 2015 |
| 04/15/2015 |
10-K
| Annual Report for the period ended December 31, 2014 |
| 05/05/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 04/30/2014 |
10-K/A
| Annual Report for the period ended December 31, 2013 [amend] |
| 04/14/2014 |
10-K
| Annual Report for the period ended December 31, 2013 |
| 04/15/2013 |
10-K
| Annual Report for the period ended December 31, 2012 |
| 11/16/2012 |
10-K/A
| Annual Report for the period ended December 31, 2011 [amend] |
| 04/17/2012 |
10-K
| Annual Report for the period ended December 31, 2011 |
| 01/17/2012 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 12/02/2011 |
10-K/A
| Annual Report for the period ended December 31, 2010 [amend] |
| 04/14/2011 |
10-K
| Annual Report for the period ended December 31, 2010 |
| 03/31/2010 |
10-K
| Annual Report for the period ended December 31, 2009 |
| 04/15/2009 |
10-K
| Annual Report for the period ended December 31, 2008 |
| 04/01/1996 |
10-K
| Annual Report for the period ended December 31, 1995 |