| Date | Form | Description | XBRL | Pages |
|---|---|---|---|---|
| 05/20/15 | 8-K | Form 8-K: Current report filing | 5 | |
| 05/19/15 | 8-K | Form 8-K: Current report filing | 3 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/18/15 | 4 | Form 4: Statement of changes in beneficial ownership of securities | 2 | |
| 05/14/15 | 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) | 12 |
