| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 03/19/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 03/19/12 | 3/A | Initial statement of beneficial ownership of securities |
|
1 | |
| 03/19/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/23/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/14/12 | 5 | Annual statement of changes in beneficial ownership of securities |
|
2 | |
| 02/14/12 | 4/A | Statement of changes in beneficial ownership of securities |
|
2 | |
| 02/14/12 | 5 | Annual statement of changes in beneficial ownership of securities |
|
2 | |
| 02/02/12 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 12/09/11 | 4 | Statement of changes in beneficial ownership of securities |
|
2 | |
| 11/30/11 | 4 | Statement of changes in beneficial ownership of securities |
|
1 |