| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 06/19/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/19/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/19/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 06/05/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/31/18 | SD | Form SD: Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1) | 14 | |
| 05/21/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/17/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/04/18 | 10-Q | Form 10-Q: Quarterly report pursuant to Section 13 or 15(d) |
|
60 |
| 05/03/18 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 1 | |
| 05/03/18 | 8-K | Form 8-K: Current report filing | 19 |