| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/17/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/09/12 | 5 | Annual statement of changes in beneficial ownership of securities |
|
2 | |
| 01/11/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/02/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 08/11/09 | 3/A | Initial statement of beneficial ownership of securities |
|
1 | |
| 08/10/09 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 08/10/09 | 3/A | Initial statement of beneficial ownership of securities |
|
1 | |
| 08/10/09 | 3/A | Initial statement of beneficial ownership of securities |
|
1 | |
| 08/10/09 | 3 | Initial statement of beneficial ownership of securities |
|
1 | |
| 06/12/08 | 3 | Initial statement of beneficial ownership of securities |
|
1 |