| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 12/18/17 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/18/17 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/18/17 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 12/11/17 | DFAN14A | Form DFAN14A: Additional definitive proxy soliciting materials filed by non-management and Rule 14(a)(12) material | 3 | |
| 12/11/17 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 5 | |
| 12/08/17 | CORRESP | Form CORRESP: Correspondence | 1 | |
| 12/08/17 | CORRESP | Form CORRESP: Correspondence | 3 | |
| 12/07/17 | DFAN14A | Form DFAN14A: Additional definitive proxy soliciting materials filed by non-management and Rule 14(a)(12) material | 5 | |
| 12/07/17 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 4 | |
| 12/07/17 | DEFA14A | Form DEFA14A: Additional definitive proxy soliciting materials and Rule 14(a)(12) material | 5 |