| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 09/07/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 03/06/18 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 12/11/17 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 11/14/17 | 4 | Statement of changes in beneficial ownership of securities |   | 3 | |
| 09/29/17 | 4 | Statement of changes in beneficial ownership of securities |   | 3 | |
| 07/05/17 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 11/24/15 | 3 | Initial statement of beneficial ownership of securities |   | 2 | |
| 11/24/15 | 3 | Initial statement of beneficial ownership of securities |   | 3 | |
| 01/06/11 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | |
| 01/06/10 | 4 | Statement of changes in beneficial ownership of securities |   | 2 | 
